Experimental investigation on bending and shear performance of two-way aluminum alloy gusset joints
Experimental investigation on bending and shear performance of two-way aluminum alloy gusset joints
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DOI：
10.1016/j.tws.2017.10.002
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发表时间：
2018-01-01
影响因子：
6.4
通讯作者：
Wu, Minger
中科院分区：
文献类型：
--
作者：
Shi, Mingzhe;Xiang, Ping;Wu, Minger
双向铝合金角板接头（AAGJ）被认为适用于四边形网格啮合的拉索加强铝合金单层网壳结构。在本研究中，对带有和不带有剪力连接器的六个 AAGJ 进行了一系列实验，以研究它们的半刚性行为。两个节点承受纯弯矩，其他节点承受剪切载荷，然后研究其相应的失效模式，主要是梁断裂、梁腹屈曲和螺栓失效。还获得了力矩-旋转曲线、剪切载荷-旋转曲线和应变-载荷曲线，表明AAGJ是典型的半刚性接头。剪力连接器可以优化载荷传递路径并提高弯矩下的延展性，同时显着增强剪切性能。根据实验结果建立了简化的AAGJ理论模型并进行了参数化。
Two-way aluminum alloy gusset joints (AAGJs) are considered to be employed in cable-stiffened aluminum alloy single-layer reticulated shell structures meshed with quadrilateral grids. In this study, a series of experiments on six AAGJs with and without shear connectors were conducted to investigate their semi-rigid behavior. Two joints were subjected to pure bending moments and others to shear loads, then their corresponding failure modes were investigated which were mainly beam rupture, beam web buckling, and bolt failure. The moment-rotation curves, shear load-rotation curves, and strain-load curves were also obtained, indicating that AAGJs are typical semi-rigid joints. Shear connectors can optimize the load transferring path and improve ductility under bending moment while enhancing shear performance significantly. A simplified theoretical AAGJ model was also established and parameterized according to the experimental results.