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Time-dependent soil–structure interaction analysis using a macro-element foundation model Eng. Struct. (IF 5.5) Pub Date : 2024-04-19 Bo Liu, Jianfeng Xue, Barry M. Lehane, Zhen-Yu Yin
The delayed settlement of foundations due to soil consolidation, creep or particle breakage can alter the internal load distribution and differential settlements in a superstructure through soil–structure interaction (SSI). The study introduces a novel methodology to simulate time-dependent SSI that overcomes the complexity of incorporating the time-dependent behaviour of foundations into routine SSI
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Influence of local scour on the dynamic response of bridges under barge collisions Eng. Struct. (IF 5.5) Pub Date : 2024-04-18 Zihao Wang, Yanyan Sha, Jasna Bogunović Jakobsen
The response assessment of bridges crossing navigable waterways under vessel collisions is commonly conducted assuming intact bridge models. However, local scour may occur at bridge foundations, which has been identified as one of the major hydraulic causes of bridge failures. Therefore, it is imperative to consider local scour in the design and analysis of bridges against vessel collisions. Many previous
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A pull-out equivalent telescopic layered failure model of carbon fiber bundles in seawater sea-sand cementitious matrix Eng. Struct. (IF 5.5) Pub Date : 2024-04-17 Jiarong Liu, Dawei Zhang, Yewangzhi Tao, Zhiyu Xie
Based on the excellent mechanical properties and piezoresistive effect of carbon fiber, carbon fiber reinforced cementitious matrix (CFRCM) has been used in the strengthening and self-monitoring research of reinforced concrete (RC) structures. In this study, the assumptions of the telescopic layered model theory of CFRCM were refined. The factors influencing the piezoresistive effect of carbon fibers
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On the efficiency of uniform aluminum foam as energy-absorbing sacrificial cladding for structural blast mitigation Eng. Struct. (IF 5.5) Pub Date : 2024-04-17 Ola Wattad, Hezi Y. Grisaro
Aluminum foams are porous and recyclable lightweight materials with outstanding mechanical features, such as their energy absorption capabilities, their most noteworthy property. In view of these qualities, this class of material is a great candidate to use as sacrificial layers applied on structures under threat for blast load protection. Few works studied the coupled behavior between the sacrificial
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Theoretical and finite element analysis of engineered cementitious composite (ECC) link slab in hollow slab beam bridge base on different load conditions Eng. Struct. (IF 5.5) Pub Date : 2024-04-17 Yutao Bi, Caiqian Yang, Taojian Zhou, Xihua Zhan, Haoran Guo, Fawang Zhu, Yuan Yao
In order to reveal the feasibility of engineering cementitious composite (ECC) link slab applied to hollow slab beam bridge, the construction process of ECC link slab was simulated based on the birth-death element method and tracking element. Nonlinear analyses of ECC link slab under six load conditions were carried out based on Chinese bridge code. The theoretical formulas are derived and calculated
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Fatigue assessment of suspended inter-array power cables for floating offshore wind turbines Eng. Struct. (IF 5.5) Pub Date : 2024-04-17 Dennis Beier, Marek Jan Janocha, Naiquan Ye, Muk Chen Ong
The present paper aims to investigate the fatigue behavior of suspended inter-array power cables connecting two floating offshore wind turbines (FOWTs). Two spar FOWTs interconnected with a dynamic power cable are chosen as the base configuration for the present investigation. The base configuration is modeled in the dynamic analysis software OrcaFlex. The relationship between the axial tensions and
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Theoretical investigation of the structural performance of multi–span reinforced concrete beams strengthened with FRCM systems Eng. Struct. (IF 5.5) Pub Date : 2024-04-17 Ahmed Mandor, Ahmed El Refai
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Shear tests on full-scale bridge slabs with bent-up reinforcing bars Eng. Struct. (IF 5.5) Pub Date : 2024-04-17 Tobias Huber, Patrick Huber, Hannes Wolfger, Markus Vill, Johann Kollegger
Shear reinforcement design has changed over time, along with the knowledge about the shear behaviour of reinforced concrete structures. Until the 1970s, the shear design in Europe was based on empirical limits for shear stress. The rules stipulated by the design standards often resulted in designs of concrete slabs with shear reinforcement consisting only of bent-up bars without any additional stirrups
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Time-dependent synchronization factor of crowd rhythmic motion and its application on intelligent structural monitoring Eng. Struct. (IF 5.5) Pub Date : 2024-04-16 Jun Chen, Bingqian Yu, Haoqi Wang
The synchronization factor is an index to evaluate the level of consistency for crowd motion under rhythmic guidance, which is important for crowd load modeling as well as structural vibration monitoring. Most of the existing synchronization factors were defined based on the time history of the crowd movement over a long period of time, failing to consider the time-dependent characteristics of intra-subject
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Analytical and numerical simulation of seismic resilient rocking column with enhanced RC column and pre-pressed disc springs devices Eng. Struct. (IF 5.5) Pub Date : 2024-04-16 Mingxuan Ding, Qingxuan Shi, Licheng Ma, Yi Tao, Bin Wang
This paper presents a novel self-centering energy dissipating RC rocking column (SCERC) in which a steel tube protects the concrete from spalling and crushing at the column base. It incorporates an easily repairable pre-pressed disc spring self-centering device (SC) to restore the rocking column to its original position and a straightforward slip friction energy dissipation device (ED) to ensure adequate
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Bowstring-type inerter negative stiffness damper for vibration control of slender towers Eng. Struct. (IF 5.5) Pub Date : 2024-04-16 Ning Su, Jing Bian, Zhaoqing Chen, Yi Xia
The difficulty of practical installation restrains the application of tuned damping devices in the high-performance vibration control of slender towers. In order to address this issue, a novel Bowstring-type Inerter Negative Stiffness Damper (BINSD) is proposed. The BINSD is composed of an inerter-negative-stiffness-dashpot system connected between the tower and a mass block (or a massless node) located
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Predicting out-of-plane bending strength of cross laminated timber: Finite element simulation and experimental validation of homogeneous and inhomogeneous CLT Eng. Struct. (IF 5.5) Pub Date : 2024-04-16 Anders Olsson, Osama Abdeljaber
The strength of cross laminated timber (CLT) depends on the stiffness and strength of the lamellas and on the strength of the finger joints. A model for how stiffness and strength vary along and between lamellas is used in combination with a finite element model of CLT and Monte Carlo simulations to calculate out-of-plane bending strength of homogeneous and inhomogeneous CLT. Calculated and experimentally
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Investigation on the influence of previous in-plane loading on the out-of-plane behavior of the innovative damped masonry infill wall Eng. Struct. (IF 5.5) Pub Date : 2024-04-16 Zhangyan Chen, Yun Zhou, Genquan Zhong
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Estimation of pile stiffness in non-homogeneous soils through Artificial Neural Networks Eng. Struct. (IF 5.5) Pub Date : 2024-04-16 Román Quevedo-Reina, Guillermo M. Álamo, Juan J. Aznárez
Many international standards highlight the relevance of studying the compatibility of forces and displacements between the structure and the foundation that supports it. In the case of pile foundations, some authors use continuum models that rigorously reproduce the interaction of the pile with the surrounding soil. However, their high computational cost justifies the use of simplified methodologies
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Physicochemical-mechanical simulation of the short- and long-term performance of FRP reinforced concrete beams under marine environments Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Keitai Iwama, Ming-Feng Kai, Jian-Guo Dai, Peng Zhang, Peng Wang, Chi-Sun Poon, Christopher Kin-Ying Leung, Koichi Maekawa
To broaden the applications of fiber reinforced polymer (FRP) reinforced concrete structures under marine environments, it is crucial to gain a fundamental understanding of their short- and long-term performance. In this study, the effectiveness of the proposed multi-scale simulation platform, which incorporates the proposed degradation model of FRP bars, is quantitatively assessed via the comparison
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Experimental study and numerical model of a new passive adaptive isolation bearing Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Siqi Wang, Yong Yuan, Ping Tan, Yafeng Li, Wenzhi Zheng, Dehong Zhang
This study presents a novel assembled passive adaptive isolation bearing (PAIB) for structures against various seismic design levels, which offering variable stiffness functions change with the displacement, vertical stress and rate. The operational mechanism of the bearing is initially described, followed by experiments conducted on 6 specimens with NR (Natural rubber) drum dampers and 10 specimens
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Resource-constrained bridge maintenance optimization by harmonizing structural safety and maintenance duration Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Jiangang Wei, Gang Chen, Jizhuo Huang, Wenchi Shou, Jun Wang
Bridges are progressively experiencing significant structural wear and challenges in their maintenance procedures. To address this issue, it's crucial to clarify the order of maintenance activities during the bridge maintenance process and the impact of maintenance resources on structural safety performance. This understanding allows for the precise establishment of a model that captures the changes
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Subassemblage test and width-thickness design limit for steel built-up box columns subjected to axial load and cyclic lateral drift Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Chung-Che Chou, Hou-Kuan Shen, Daniel Yen-Hsun Chou
This study investigates the behavior of first-story columns under reversed cyclic lateral loading and constant axial loading by using a full-scale, one-and-a-half story subassemblage testing scheme. Four subassemblages were designed with steel beams at the second floor and a moderately ductile built-up box column with a width-thickness ratio () of either 16.2 or 20.5, which are between the highly ductile
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Multi-metric evaluation of the optimal intensity measure for mainshock-aftershock fragility analysis of transmission towers Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Juncai Liu, Xiangrui Meng, Li Tian, Meng Yang, Qingtong Jin, Guodong Shao
Identifying the optimal intensity measure () contributes to reducing uncertainties in probabilistic seismic demand models (PSDM) and enhancing confidence of their results. Although many studies have discussed appropriate s for mainshocks, relatively less attention is paid to the potential aftershock effect. In particularly, the optimal s for developing PSDM of transmission towers subjected to sequential
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Machine-learning-assisted design of high strength steel I-section columns Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Jinpeng Cheng, Xuelai Li, Ke Jiang, Shuai Li, Andi Su, Ou Zhao
High strength steel has been attracting attention in the building industry due to its superior mechanical properties. The accurate design of high strength steel structures is crucial to boost its wide application. In this paper, an accurate and unified design approach for high strength steel I-section columns with different material grades, boundary conditions, geometric dimensions (including cross-section
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Mesoscale modelling on shear behavior of RC beams at low temperature: Influences of structural size and shear span-to-depth ratio Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Liu Jin, Chenxi Xie, Wenxuan Yu, Xiuli Du
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Shear behavior of prismatic and tapered prestressed concrete girders with corrugated steel webs exposed to vehicle fire Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Man Zhou, Xing Peng
In this study, the Fire Dynamics Simulator () is used to simulate the scene of the prestressed concrete (PC) girders with corrugated steel webs (CSWs) exposed to automobile traffic fire. The temperature field coupling between the and Finite element (FE) model is accomplished via the sub-program fds2ascii, and the validation of the coupling methodology is confirmed through experimental validation. Subsequently
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Band gap characteristics of bionic acoustic metamaterials based on spider web Eng. Struct. (IF 5.5) Pub Date : 2024-04-15 Haifeng Ruan, Dong Li
For the purpose of low-frequency vibration isolation and noise reduction, combined with the nested mode of spider web, a new concave star bionic acoustic metamaterial was proposed in this paper. Based on the finite element method (FEM) and Bloch theory, the effects of vertex connection mode, nesting level (), and rotation angle () on the band gap distribution, transmission spectrum, and isofrequency
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The flexural mechanical response of a novel plug-in self-locking inter-module connection for modular steel buildings Eng. Struct. (IF 5.5) Pub Date : 2024-04-14 Nianxu Yang, Junwu Xia, Hongfei Chang, Lihai Zhang
The bending-deformation resistance of a proposed plug-in self-locking inter-module connection was investigated. Firstly, bending tests were conducted on three foot-size plug-in self-locking inter-module connections. Secondly, the corresponding finite element model (FEM) was established with ABAQUS finite element software, and then verified through tests. A parametric analysis of the connection was
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Video comprehension-based approach for seismic damage recognition of freestanding non-structural components Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Yongqing Jiang, Jianze Wang, Xingquan Guan, Kaoshan Dai
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Novel long-span cable-stayed deck arch bridge: Concept and structural characteristics Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Yaping Lai, Yanzi Wu, Guannan Wang
To explore a cost-efficient bridge structure system and expand the options for long-span bridges in mountainous regions, we propose an innovative cable-stayed deck arch (CSDA) bridge with significant potential benefits. This paper discusses the conceptualization, structural design considerations, and implementable construction methods of this bridge-type. We trial designed two CSDA bridges with span
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Bayesian uncertainty quantification of modal parameters and RRF identification of transmission towers with limited measured vibration data Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 You-Hua Su, Yan-Ming Zhu, Chao Zhao, Heung-Fai Lam, Qing Sun
The resonant response factor (RRF) sensitive to modal parameters, including the damping ratio and frequency, is a critical parameter for wind-resistant design of extra high voltage (EHV) transmission towers, because it directly affects the calculation of the wind vibration coefficient. However, the research on operational modal analysis (OMA) of in-service EHV transmission towers is limited due to
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Axial compressive behavior of spiral stirrup-reinforced concrete-filled cold-formed steel built-up box stub columns Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Zhenghao Qian, Qianyi Song, Haoyuan Huang, Weiyong Wang
This paper aims to explore the enhancement effect of spiral stirrup on concrete-filled cold-formed steel built-up box (CF-CFB) columns. Herein, four specimens were designed and fabricated to explore the impact of the spiral stirrup and riveted form on the axial compression performance of CF-CFB columns. Then, the finite element model of spiral stirrup-reinforced concrete-filled cold-formed steel built-up
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Optimal design of transverse dampers incorporating inherent stiffness effects for stay cable vibration control: A case study with wire rope dampers Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Keyu Lai, Wei Fan, Zhengqing Chen, Huawei Niu, Lingfei Ma, Shouying Li
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Seismic behavior of drift-hardening precast concrete walls reinforced with SBPDN rebars Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Jiayu Che, Yuping Sun
Six precast concrete walls reinforced with weakly bonded ultra-high strength (WBUHS) rebars were fabricated and tested under reserved cyclic lateral loading and constant axial compression to investigate the seismic behavior of the precast drift-hardening concrete walls. The emphasis was placed on clarifying the proper embedded length for WBUHS rebars and verifying the influence of the shear span ratio
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Extended constant life diagrams for low cycle fatigue and creep-fatigue assessments of high-temperature structures Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Zhiyuan Ma, Zhuojia Fu, Haofeng Chen, Xiaoxiao Wang, Daniele Barbera
Over the decades, the constant life diagram has become an important tool for engineering design and assessment. For specific materials, the effect of mean stress and stress amplitude on the fatigue life is considered in traditional constant life diagrams. In this study, the concept of the structural constant creep-fatigue life diagram is proposed for engineering structures subjected to cyclic loads
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Uncertainty quantification and stochastic response prediction for excavator systems under extreme operating conditions Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Di Wu, Denghui Peng, Shenlong Wang
The quantification of extreme operating conditions and their corresponding response predictions is a considerable challenge regarding the operation and maintenance of electromechanical equipment, such as dynamic excavator systems. This paper proposes a novel nonstationary modulation function model based on kinematic and dynamic analyses driven by on-site measurement data acquired from excavators. Extreme
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Structural behavior of fully prefabricated glubam-concrete composite beams constructed of innovative connectors Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 T.Y. Li, J.Q. Chen, Y. Xiao, B. Shan, Y.Y. Li, P.C. Qin
This study focuses on developing fully prefabricated glued laminated bamboo (glubam)-concrete composite (BCC) beams constructed of the innovative ultra-high performance concrete (UHPC)-steel composite connectors. Five mid-scale prefabricated BCC beams with different connectors and concrete slabs were tested under short-term loading conditions to evaluate the flexural behavior. Particular emphasis was
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Flexural design of cold-formed steel built-up sections failing by local buckling: Development of generalised direct strength method Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Salah-Eddine Maizi, Yazid Hadidane, Mohammad Adil Dar
This research paper presents a new flexural design approach for cold-formed steel (CFS) built-up sections failing in local buckling, developed following an extensive numerical investigation involving two novel closed built-up sections. At first, a finite element (FE) model using the widely adopted ABAQUS software was constructed and carefully validated against pertinent experimental data available
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A simplified analytical approach for CLT-based seismic retrofit of existing reinforced concrete structures Eng. Struct. (IF 5.5) Pub Date : 2024-04-13 Andrea Bartolotti, Francesco Smiroldo, Ivan Giongo
Reinforced concrete (RC) framed buildings characterize the built heritage of many countries. Many of these buildings were built between 1950 and 1970, when seismic codes and guidelines were scarce and not mandatory, and therefore the design was based exclusively on gravity loads. The absence of specific seismic details combined with little awareness of the consequences of the interaction between the
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Self-sensing joints for in-situ structural health monitoring of composite pipes: A piezoresistive behavior-based method Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Riwu Yao, Zhoutian Ge, Deyi Wang, Ningtao Shang, Jianfeng Shi
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Shake table test on support uplift force of long-span cable-stayed bridge under longitudinal ground motions Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Wei Guo, Haicui Wang, Xuhong Zhou, Jianzhong Li, Jianting Zhou, Zhongguo Guan, Lueqin Xu
Since the excessive seismic support uplift force may cause the support failure of long-span cable-stayed bridges, this study focused on the support uplift force at the auxiliary pier for a double-tower cable-stayed bridge with a main span of 1088 m. A shake table test was designed and performed based on the 1/35-scale test model scaled from the prototype bridge. Details of the test model, including
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Strength and behavior of axially and eccentrically loaded built-up closed sections using four cold-formed steel open sections Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Lingfeng Yin, Shaokuai Wang, Yongbiao Wang, Tianyang Deng, Zhanjie Li
Innovation in cold-formed steel framing systems is needed for opening flexibility and application in mid-rise buildings. Hence, this study proposes a closed built-up section using four cold-formed steel (CFS) open sections with a high load bearing capacity that potentially enables the development of high-performance cold-formed steel framing systems for these. The closed section by combining four open
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Design and experiment of an innovative rotational two-level friction damper Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Zhenqin Huang, Weiyuan Huang, Chao Zhang, Tianhao Yu, Zijian Lin, Wenchen Lie, Feng Zhao
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Experimental investigation of dynamic bond behaviors between LRS-FRP and concrete Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Debo Zhao, Fuhua Deng, Yutao Huang, Xiangsheng Chen, Xue Li, Jingming Sun, Yulei Bai
The dynamic bonding behaviour at the interface between a large-rupture-strain fibre-reinforced polymer (LRS-FRP) and concrete was investigated via drop weight impact tests of notched beam specimens. The main experimental variables included the concrete strength grade, number of LRS-FRP layers, and loading rate. With increasing loading rate, the location of the peeling damage at the interface between
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Examination of load-deformation characteristics of long-span bridges in harsh natural environments based on real-time updating artificial neural network Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Liangliang Hu, Xiaolin Meng, Yilin Xie, Craig Hancock, George Ye, Yan Bao
Long-span bridges, often exposed to challenging harsh natural environments with severe weather conditions, necessitate real-time examination of load-deformation characteristics to ensure structural integrity and safety. Previous studies have primarily focused on investigating the causes of deformation in bridge structures under different single-load conditions during severe natural disasters, utilizing
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Dynamic shear force-bending moment interaction diagrams in RC beams under impact Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Gonzalo S.D. Ulzurrun, Carlos Zanuy
Civil structures and buildings may be subjected to accidental impact load scenarios to which the response is still a research subject. Impact failure mode and resistance of concrete structures have shown to be rather different from those under quasi-static loading, due to the influence of strain-rate modification of material properties, development of inertia forces leading to variable sectional forces’
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Advancing blast fragmentation simulation of RC slabs: A graph neural network approach Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Qilin Li, Zitong Wang, Wensu Chen, Ling Li, Hong Hao
Accurate prediction of blast-induced fragmentation in reinforced concrete (RC) structures is pivotal for structural debris hazard assessment in an explosion event. This assessment is essential for designing effective measures for protection of people and structure in the vicinity. While conventional computational techniques are proficient, they are computationally very demanding and may not be readily
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Analytical and experimental response of timber joists strengthened with an external underslung post-tensioned system Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Benedetta Orfeo, Fernando Trujillo, María del Mar Corral, Leonardo Todisco
Floors made of timber load-bearing joists often do not meet modern load demands and strict code requirements. In pursuit of retrofitting such floors, this paper investigates the feasibility of strengthening timber joists with an external underslung post-tensioned system composed of a V-shaped tension chord and a midspan strut. An analytical approach is employed to assess the system’s response under
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Experimental lap-shear tests on friction dampers with single and double slotted holes Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Elide Nastri, Massimo Latour, Osvaldo Pecorari, Vincenzo Piluso
Several experimental lap shear tests have been performed to assess the initial values of the slip resistance and their evolution during a cyclic loading history. Both friction dampers with parallel slotted holes and double slotted holes have been investigated. Friction devices with shims made of a previously tested material, called M4, have been tested and the tribological behaviour, the degradation
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Numerical investigation on the behaviour of concrete barriers subjected to vehicle impacts using modified K&C material model Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Sachinthani Karunarathna, Steven Linforth, Alireza Kashani, Xuemei Liu, Tuan Ngo
Full-scale experimental crash tests are important to determine the occupant risk factors and understand barrier system behaviour in vehicle-barrier impacts. Due to the expensive and time-consuming nature of such crash tests, finite element simulations of full-scale crash tests to analyse and design road safety structures have gained popularity as a more practical method of assessment. In this research
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Experimental and analytical investigations on reusable column base connection with pinned energy dissipators Eng. Struct. (IF 5.5) Pub Date : 2024-04-12 Qi MA, Tak-Ming CHAN
This research paper introduces a novel, yet simple, column base connection that is reusable for moment resisting frames (MRFs). The performance of this connection was evaluated through a comprehensive experimental investigation. The proposed design incorporates a pinned energy dissipator (ED) that effectively absorbs seismic energy. Moreover, the connection utilises the weight of the column itself
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Local–overall buckling behavior of corroded intermediate compression-bending H-section steel columns Eng. Struct. (IF 5.5) Pub Date : 2024-04-11 Qianzhi Xue, Shanhua Xu, Anbang Li, Youde Wang
The primary aim of this paper is to assess the impact of corrosion damage on intermediate H-section steel columns subjected to combined compression and bending about the strong axis. The study conducted a comprehensive investigation into the corrosion-induced transition in the buckling behavior of steel columns through experimental and numerical analyses. Six H-section Q355 steel intermediate columns
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Matching relationship of low-cycle fatigue life and fatigue design method of concentrically braced frames with H-section steel Eng. Struct. (IF 5.5) Pub Date : 2024-04-11 Lijing Zeng, Wenyuan Zhang, Zhou Zhou, Paolo Gardoni
Simulations on 192 concentrically braced frames with H-section steel (Q355B) are carried out to investigate their low-cycle fatigue performance. The fatigue life of a steel-braced frame is predicted using a multiaxial fatigue damage parametric model. To depict the fatigue failure sequence and the matching relationship of the fatigue life between the two components in the braced frame, the fatigue life
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Potential and limits using the DAD method for condition assessment of bridge structures Eng. Struct. (IF 5.5) Pub Date : 2024-04-11 Tarik Čamo, Danièle Waldmann
In the last years, the age of the bridge contingent is in all countries constantly increasing while in addition the bridges are solicited by an increased load level and an increased load frequency. This leads to an urgent need for defining efficient bridge structure condition assessment methods. Here, the Deformation Area Difference (DAD) method has already proven to be reliable and practicable. This
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Seismic design spectra considering nonlinear connections between the existing building and the retrofit system Eng. Struct. (IF 5.5) Pub Date : 2024-04-11 Simone Labò, Andrea Belleri, Alessandra Marini
Holistic retrofit solutions for RC buildings carried out from the outside through structural exoskeletons, have been widely proposed in recent years. Based on the need to further investigate this type of intervention, the interaction between the existing building and the external exoskeleton was studied and discussed using a simplified 2DOF model. Both elastic and nonlinear retrofit solutions were
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Modeling the initiation and propagation of complex networks of cracks in reinforced concrete plates Eng. Struct. (IF 5.5) Pub Date : 2024-04-10 Rafael N. Cunha, David L.N.F. Amorim, Sergio P.B. Proença, Julio Flórez-López
The present paper proposes a new finite element formulation for the analysis of RC slabs, accounting for concrete cracking and reinforcement yielding. The proposed formulation, developed within the framework of Lumped Damage Mechanics, considers that all inelastic effects are localized in lines and relates all numerical parameters to the mechanical properties of the slab. The proposed variational approach
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The flexural behavior and efficiency of RC beams strengthened with SNSM bars under the effect of several end conditions and material properties Eng. Struct. (IF 5.5) Pub Date : 2024-04-10 Sara S. Mohamed, Osman Hamdy, M.H. Seleem, I.A. Sharaky
In this paper, twelve strengthened, and one un-strengthened reinforced concrete (RC) beams were experimentally and numerically investigated in flexure. The strengthened RC beams were upgraded with steel or glass fiber reinforced polymer (GFRP) in the form of side-near surface mounted (SNSM) reinforcement. The tested parameters were the SNSM bar diameter, adhesive materials, SNSM end conditions, and
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A machine learning-enabled prediction of damage properties for fiber-reinforced polymer composites under out-of-plane loading Eng. Struct. (IF 5.5) Pub Date : 2024-04-10 Norman Osa-uwagboe, Amadi Gabriel Udu, Maryam Khaksar Ghalati, Vadim V. Silberschmidt, Adedeji Aremu, Hongbiao Dong, Emrah Demirci
For understanding the damage morphology in fiber-reinforced plastics under out-of-plane loading, engineers/ and designers mostly rely on experimental investigations and numerical models, which could be costly in terms of resources and computational requirements. Thus, pragmatic predictive approaches that can offer ready-to-use tools for material optimization have gained traction in recent years. This
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Dynamic instability analysis of sandwich plates with auxetic honeycomb core and three-phase hybrid composite layers stiffened by curved stiffeners using isogeometric analysis Eng. Struct. (IF 5.5) Pub Date : 2024-04-10 Mohammad Reza Ghovehoud, Saeid Sarrami, Mojtaba Azhari, Mohammad Amin Shahmohammadi
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Main factors influencing the shear stiffness of circular joints in tunnel segmental linings analyzed by numerical modelling Eng. Struct. (IF 5.5) Pub Date : 2024-04-10 Xin Han, Pierpaolo Oreste, Fei Ye
Segmental tunnel lining is a tunnel lining that is adopted when the Tunnel Boring Machine (TBM) is used as excavation machine. It is a concrete lining that is assembled with segments, connected to each other through various devices, including connecting bolts. In order to correctly analyze the behavior of the segmental lining in the longitudinal direction of the tunnel, when actions and loads stress
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An inelastic beam-like model for nonlinear dynamic analyses of multi-storey buildings Eng. Struct. (IF 5.5) Pub Date : 2024-04-10 Ilaria Fiore, Salvatore Caddemi, Ivo Caliò, Annalisa Greco
This paper presents an equivalent non-uniform inelastic beam-like model for the evaluation of the nonlinear behaviour of multi-storey buildings subjected to earthquake loadings. The proposed beam can be used to model buildings with non-uniform mass and stiffness distribution. The model is characterised by a number of degrees of freedom corresponding to the number of floors of the building and is conceived
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Investigation on fatigue behavior of GFRP hybrid bonded/bolted joint under shear loading based on nondestructive monitoring test and numerical modeling Eng. Struct. (IF 5.5) Pub Date : 2024-04-09 Sheng Xiang, Bin Cheng, Jinxiao Wang, Derui Li, Sida Li, Xingfei Yan
The GFRP (Glass Fiber Reinforced Polymer) is prospective in bridge and building engineering for its advantageous material property. The connection configuration of hybrid bonded/bolted joint of GFRP is thought superior in mechanical performance compared with the traditional bonded and bolted joints. However, the fatigue issue of this type of joint remains unclear which impedes its engineering applications
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Flexural and shear strengthening of RC beams reinforced with externally bonded CFRP laminates postfire exposure by experimental and analytical investigations Eng. Struct. (IF 5.5) Pub Date : 2024-04-09 Nestor Mejía, Andrés Sarango, Alejandro Espinosa
As reinforcing structural systems in RC (reinforced concrete) elements are continually researched, more complex challenges in engineering are found that demand mathematical innovations that describe the composite elements’ behaviour subject to different scenarios. The current study analyses the performance of RC beams reinforced with externally bonded carbon-fibre-reinforced polymer (CFRP) sheets postfire
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Experimental and numerical modal evaluation of profiled steel decking floor slabs in a container house using MEMS Eng. Struct. (IF 5.5) Pub Date : 2024-04-09 Henrique T. Lima, Luis E. de M. Alas, Mateus N.A. Nunes, Douglas M. de Lima, Iálysson da S. Medeiros
The reuse of shipping containers in civil construction is popular for ecological reasons and to expedite construction, reducing the payback time for financial investments. Technological advancements enabled lighter structural elements with natural frequencies closer to those associated with human activities. However, this trend also leads to unwanted vibrations in steel and concrete composite slabs