Shear Behavior Study of a New T-Jointed Steel-Wood Composite Beam

为研究钢–木组合梁连接位置在新型T型连接方式下的受力性能，本文以环氧树脂胶黏结、T型连接、混凝土连接、T型大小和T型开孔为变量参数，通过有限元软件Abaqus建立三维实体模型进行分析，研究其对组合梁极限承载力、刚度和挠度变形的影响规律。通过推出试验与模拟及理论分析对其抗剪性能进行了研究，包括连接的抗剪承载力、抗剪刚度及延性，并验证了不同破坏模式下现有计算理论对T型连接件抗剪承载力计算的适用性。To investigate the mechanical performance of the connection in steel-wood composite beams under a novel T-shaped connection method, this study takes epoxy resin adhesive bonding, T-shaped connections, concrete connections, T-shaped dimensions, and T-shaped perforations as variable parameters. Three-dimensional solid models are established using the finite element software Abaqus for analysis, examining their influence on the ultimate bearing capacity, stiffness, and deflection deformation of the composite beams. Push-out tests, simulations, and theoretical analyses are conducted to study the shear performance, including the shear bearing capacity, shear stiffness, and ductility of the connections. Additionally, the applicability of existing theoretical calculations for the shear bearing capacity of T-shaped connectors under different failure modes is validated.