腹板嵌入式双倒T型钢-混组合梁受弯性能研究  

Research on flexural behavior of embedded double inverted T-shaped steel-concrete composite beam with web

作　　者：张现通 陈建兵[1] 周晨 ZHANG Xiantong;CHEN Jianbing;ZHOU Chen(School of civil Engineering,SUST,Suzhou 215011,China;CCCC Fist Public Bureau Second Engineering Company Limited,Suzhou 215011,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011 [2]中交一公局第二工程有限公司,江苏苏州215011

出　　处：《苏州科技大学学报（工程技术版）》2024年第2期34-40,共7页Journal of Suzhou University of Science and Technology（Engineering and Technology Edition）

基　　金：江苏省研究生科研与实践创新计划项目(KYCX21_3039)。

摘　　要：在通过横隔板连接的双倒T型钢腹板上部开槽,并将开槽腹板部分嵌入到混凝土翼板,与底部钢筋共同形成带有榫结构连接的腹板嵌入式双倒T型钢-混组合梁。设计了该试件的受弯性能试验,分析总结了试件的破坏模式,并基于荷载-挠度曲线和应变分布特征等试验结果对其承载力和延性等力学指标进行评估。该梁满足完全抗剪连接,具有良好的整体抗弯性能。根据试验及有限元模拟结果,提出了抗弯承载力设计方法,试验结果与理论计算结果误差为2.7%,结果吻合较好,该理论公式可作为结构设计的依据。In this paper,the upper part of the double inverted T-shaped steel web connected by the diaphragm was grooved and embedded into the concrete flange.Together with the transverse reinforcement at the bottom of the plate,a new type of embedded double inverted T-shaped steel-concrete composite beam with concrete tenon structure was formed.The bending performance test of the specimen was designed,the failure mode of the specimen was analyzed and summarized,and the mechanical indexes such as stiffness,bearing capacity and ductility were evaluated based on the test results such as load-deflection curve and strain distribution characteristics.The beam meets the requirements of complete shear connection and has good overall bending resistance.According to the test and the finite element simulation,the design method of bending bearing capacity is proposed,and the error between the test results and the theoretical calculation results is 2.7%,which is in good agreement.The theoretical formula can be used as the basis for structural design.

关 键 词：腹板嵌入式双倒T型钢-混组合梁 抗弯性能 抗弯承载力 

分 类 号：TU375[建筑科学—结构工程]