带抗剪键悬挑叠合板力学性能研究  

Study on the mechanical properties of suspension laminated plate with shear keys

作　　者：李明[1] 周稚竣 袁双 綦韦 吕兴勃 颜伟 LI Ming;ZHOU Zhijun;YUAN Shuang;QIWei;LÜXingbo;YANWei(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;School of Civil Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]天津大学建筑工程学院,天津300072

出　　处：《混凝土》2023年第12期226-230,共5页Concrete

基　　金：国家自然科学基金(51978422);辽宁省教育厅面上项目(LJKZ0561);住房与城乡建设部(2019-K-080)。

摘　　要：为研究带抗剪键悬挑叠合板力学性能和设计方法,采用被验证的有限元模拟方法,模拟分析了带抗剪键悬挑叠合板在竖向荷载作用下的受力过程,探讨了设置抗剪键的必要性,分析了抗剪键间距、抗剪键混凝土强度等级等因素对其力学性能的影响。带抗剪键悬挑叠合板由于抗剪键的存在,其受力过程与现浇板相似,具有工程可行性;抗剪键间距、抗剪键混凝土强度等级对带抗剪混凝土悬挑叠合板的承载能力有一定影响,最大相差不超过10%。建立了带抗剪键悬挑叠合板屈服弯矩和屈服位移简化计算式,并对其有效性进行了验证。In order to study the mechanical properties and design methods of suspension laminated plates with shear keys(SLWSK),by using the verified finite element simulation method,the load-bearing process of them under vertical load was simulated and analyzed.The necessity of setting shear keys was discussed.The influence of shear key spacing and shear key concrete strength grade on the mechanical properties was analyzed.The results show that the load-bearing process of SLWSK is similar to that of the cast-in-place slabs because of the presence of shear keys,so SLWSK is feasible in engineering.The spacing and concrete strength grade of shear keys has a certain influence on the bearing capacity of SLWSK,with the maximum difference not exceeding 10%.Simplified calculation formulas for yield moment and yield displacement of SLWSK were established and their validity was verified.

关 键 词：悬挑叠合板 抗剪键 有限元分析 力学性能 简化计算式 

分 类 号：TU528.79[建筑科学—建筑技术科学]