腹杆角度对平行弦木桁架受力性能的影响

为研究腹杆角度对平行弦木桁架承载性能的影响,对跨度为2000 mm、杆件截面尺寸200 mm×89 mm的平行弦木桁架进行了Smsolve结构力学求解器理论模型分析与有限元模拟.在此基础上,对平行弦木桁架进行了静力加载试验,分析了平行弦木桁架在不同腹杆角度下的极限荷载、受力分布规律和主要破坏形式,验证了平行弦木桁架模型...

Effect of web angle on mechanical performance of parallel chord truss

In order to study the influence of web angle on the bearing performance of parallel chord wood truss, the parallel chord wood truss with the cross-section size of 200mm×89mm, and the span of 2000mm was analyzed. On this basis, the static loading test of parallel chord wood truss was carried out, the ultimate load,stress distribution law and main failure modes of parallel chord wood truss under different web angles were analyzed, and the correctness of parallel chord wood truss model analysis was verified, the applicability of Smsolve structural mechanics solver theoretical model and finite element model to analyze the bearing performance of parallel chord wood truss was evaluated. The results show that the ultimate load of parallel chord timber truss exceeds the design load by 4-7 times, the failure position is the end points on both sides and the loading point, the failure mode is the truss failure caused by the pull-out of node toothed plate, and the truss with web angle of 47° has better stability on the premise of meeting its bearing capacity. Both the theoretical model of Smsolve structural mechanics solver and the finite element model are suitable for the analysis of the bearing performance of parallel chord wood truss.