期刊论文

中文

建筑结构

1002-848X

2022

52

8

80-87

10.19701/j.jzjg.20200744

国家自然科学基金项目（51778219）；

本校为其他机构

为研究一种新型抗剪连接的榫卯钢结构外包U型钢-混凝土组合梁的抗弯性能以及破坏模式，对6根此种形式的简支梁足尺试件进行了抗弯承载力试验。试验中主要考虑翼缘板内钢筋桁架焊接用作抗剪连接件，研究钢梁高度、内部纵筋等对组合梁抗弯刚度和抗弯承载力的影响。在试验的基础上提出了适应此种新型抗剪连接件的组合梁跨中挠度计算公式。研究结果表明：此种抗剪连接件的组合梁试件承载力良好，破坏形态均为正截面弯曲破坏，破坏后整个试件具有很大的挠度变形，满足试件延性设计要求；提出的修正刚度法计算跨中挠度结果与试验值吻合较好。

In order to study the flexural performance and failure mode of a new type of shear-connected U-shaped steel-concrete composite beams covered by tenon and mortise steel structure,the flexural bearing capacity test was carried out on 6 full-scale specimens of this type of simply supported beam.In the test,the welding of steel bar trusses in the flange plate was mainly considered as the shear connector,and the influence of the height of the steel beam and the internal longitudinal reinforcement on the flexural stiffness and flexural bearing capacity of the composite beam was studied.On the basis ...