塑性铰法分析现浇楼板钢筋混凝土框架结构抗震性能  

Seismic performance analysis of RC frame structures with cast-in-place slab by plastic hinge method

作　　者：孙威[1] 黄炎生[1] 

机构地区：[1]华南理工大学土木与交通学院,广东广州510640

出　　处：《中南大学学报（自然科学版）》2017年第8期2187-2194,共8页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助助项目(51008085)~~

摘　　要：为提高建模和分析效率,提出通过修改梁端塑性铰属性来模拟楼板效应的方法。塑性铰法采用杆系单元建模,由梁与楼板的共同受力特性推导出梁端转角和弯矩承载力的关系,并以塑性铰属性的方式赋予整体杆系分析模型。应用该方法对1个典型的2层钢筋混凝土框架结构进行抗震性能分析,将计算结果与直接建立楼板的分析模型计算结果进行比较。研究结果表明:本文提出的塑性铰法能够有效的对楼板的作用效应进行模拟。In the seismic performance of reinforced concrete（RC） frame structure, the slab effect has a strong influence on the analysis results. The traditional solution method is to use the solid element to build the integral model, which needs a complicated model and costs a lot of computational time. For improving the efficiency of modeling and analysis, plastic hinge method was proposed. Plastic hinge method used the frame element to build the model and simulate the slab effect by modifying the plastic hinge property. The modified plastic hinge property data were calculated from the combined models of beam components and slab components. Plastic hinge method was applied to estimate the seismic performance of a two-story typical RC frame. The results show that compared with the traditional method, plastic hinge method is an effective method of the slab effect simulation.

关 键 词：钢筋混凝土框架结构 抗震性能 楼板效应 塑性铰属性 

分 类 号：TU375.4[建筑科学—结构工程]