This paper presents a study on the performance of two types of fully bolted connections in relation to progressive collapse. Two specimens were specifically designed and fabricated to represent these connections. One specimen utilized the traditional double web angle connection (DWA), while the other employed a new type of connector, resulting in a new fully bolted connection (NFB). The study thoroughly investigated various aspects of the specimens, including failure modes, load–displacement responses, and resistance mechanisms. The findings revealed that the flexural behavior and ultimate behavior of the NFB connection were superior to those of the DWA connection, particularly in terms of flexural behavior. However, the rotational behavior of the NFB connection was slightly inferior to that of the DWA connection. Additionally, refined numerical models were used to simulate the failure modes and load–displacement responses of both connections, and a strong correlation was observed between the test results and the numerical analysis. Furthermore, a parametric analysis of the NFB connection was conducted, leading to the discovery that modifying the structural type of the new connector, specifically adjusting the form of part C from flush to extended, was the most effective measure for enhancing the anti-progressive collapse capacity of the NFB connection. Moreover, the rotational capacity and ultimate load-carrying capacity of the NFB connection could be improved by adjusting the thickness of the new connector and increasing the diameter of the bolts within the steel beam.

本文对两种类型的全螺栓连接与渐进倒塌相关的性能进行了研究。专门设计和制造了两个样本来代表这些连接。一个样本采用传统的双腹板角连接（DWA），而另一个样本则采用新型连接器，形成新的全螺栓连接（NFB）。该研究彻底调查了样本的各个方面，包括失效模式、载荷-位移响应和阻力机制。研究结果表明，NFB 连接的弯曲行为和最终行为优于 DWA 连接，特别是在弯曲行为方面。然而，NFB 连接的旋转行为略逊于 DWA 连接。此外，使用精确的数值模型来模拟两种连接的失效模式和载荷位移响应，并且观察到测试结果和数值分析之间存在很强的相关性。此外，对NFB连接进行了参数分析，发现修改新型连接器的结构型式，特别是将C部分的形式从平齐调整为加长，是增强抗连续倒塌的最有效措施。 NFB 连接的容量。此外，通过调整新型连接件的厚度和增加钢梁内螺栓的直径，可以提高NFB连接的旋转能力和极限承载能力。