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Experimental Study on the Mechanical Properties of Horizontally Bolted Joints of Prefabricated Shear Walls
International Journal of Civil Engineering ( IF 1.7 ) Pub Date : 2024-03-18 , DOI: 10.1007/s40999-024-00946-5
Yong Xu , Yujie Fan , Yingda Zhang , Bo Shu , Hongyuan Tang

Based on the existing research results on prefabricated shear wall vertical bolt connections, the force performance of horizontal bolt joints composed of multiple bolt connections were further examined in this paper. Through the quasistatic load test of two horizontal bolt joint specimens, the hysteresis curve, backbone curve, and stiffness degradation curve of the wall were obtained. The test results show that the specimens’ load-bearing capacity can reach 240–280 kN, with a maximum displacement between 40 and 70 mm, indicating that the force performance and deformation ability of the horizontal joint are good at this size. The overall shape of the hysteretic curve of the specimens is similar to an arch, with a certain pinch effect, and the hysteretic loop is relatively full, indicating good energy dissipation ability. The failure of the specimens reveals that a single bolt connection exists under shear, compression and tension conditions. The force state of the bolt connections in the horizontal joints was divided into four situations: shear state, axial compression state, small eccentric compression state and large eccentric compression state. For each situation, a calculation formula for bolt connections in horizontal joints was proposed and the average relative error is 4.72%, providing a reference for the force calculation of this type of joint.



中文翻译:

预制剪力墙水平螺栓节点力学性能试验研究

本文在现有预制剪力墙竖向螺栓连接研究成果的基础上,进一步检验了由多个螺栓连接组成的水平螺栓连接的受力性能。通过对两个水平螺栓连接试件进行准静载试验,得到墙体的滞后曲线、骨干曲线和刚度退化曲线。试验结果表明,试件承载能力可达240~280 kN,最大位移在40~70 mm之间,表明该尺寸水平缝的受力性能和变形能力良好。试件滞回曲线整体形状类似拱形,具有一定的箍缩效应,且滞回线较为饱满,耗能能力良好。样本的失效表明在剪切、压缩和拉伸条件下存在单螺栓连接。水平节点螺栓连接的受力状态分为剪切状态、轴压状态、小偏心受压状态和大偏心受压状态四种情况。针对每种情况,提出了水平节点螺栓连接的计算公式,平均相对误差为4.72%,为该类型节点的受力计算提供参考。

更新日期:2024-03-19
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