集中荷载作用下四边简支双钢板混凝土组合板的力学性能研究  

MECHANICAL PERFORMANCE OF TWO-WAY SIMPLY SUPPORTED STEEL-PLATE COMPOSITE SLABS UNDER CONCENTRATED LOAD

作　　者：赵唯以 高泽鹏 王琳 陈沛涵 ZHAO Wei-yi;GAO Ze-peng;WANG Lin;CHEN Pei-han(School of Civil Engineering,Qingdao University of Technology,Qingdao,Shandong 266033,China;Beihang School,Beihang University,Beijing 100191,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033 [2]北京航空航天大学北航学院,北京100191

出　　处：《工程力学》2022年第3期158-170,192,共14页Engineering Mechanics

基　　金：国家自然科学基金青年科学基金项目(52008219)。

摘　　要：根据5组33片四边简支双钢板混凝土组合板的试验结果,将组合板的变形模式归纳为弯曲变形模式和冲切变形模式,推导其抗力和刚度的理论计算式,提出能够描述组合板受力全过程的抗力函数模型,并通过现有试验和数值模拟结果验证模型的准确性。基于该模型研究含钢率、材料强度、连接件布置等参数对组合板变形模式和耗能能力的影响,结果表明:含钢率和钢板强度对SC板的极限承载力和耗能能力影响较大,而混凝土强度的影响很小;为了充分利用钢板的力学性能,应合理限制含钢率和钢板强度,或加强连接件布置保证组合作用;不同的设计参数可能导致不同的变形模式和破坏顺序,设计中应针对具体的需求对设计参数加以优化。According to the test results of 5 groups of 33 simply supported steel-plate composite(SC)slabs,the deformation modes of the SC slabs are categorized into a flexural deformation mode and a punching shear deformation mode.Theoretical calculation formulas for the resistance and the stiffness are derived.The resistance function model of the SC slabs is proposed,considering the whole loading and unloading process.The accuracy of the model is verified through the existing test and numerical simulation results.Based on this model,the influence of the steel ratio,of material strength,and of connector layout on the deformation mode and on the energy dissipation capacity of the SC slabs are studied.The results show that the steel ratio and steel plate strength have great influence on the bearing capacity and on the energy dissipation capacity of the SC slab,while the influence of the concrete strength is not obvious.In order to make full use of the mechanical properties of the steel plates,the steel ratio and steel plate strength should be reasonably limited,or the arrangement of connectors should be strengthened to ensure the composite action.Since different design parameters may lead to different deformation modes and failure sequences,the design parameters should be optimized based on specific demands.

关 键 词：双钢板混凝土组合板 变形模式 刚度 抗力函数 耗能能力 

分 类 号：TU398.9[建筑科学—结构工程]