板柱节点抗冲切性能分析的力学转化模型  

MECHANICAL TRANSFORMATION MODEL OF PUNCHING SHEAR CAPACITY ANALYSIS FOR SLAB-COLUMN CONNECTIONS

作　　者：陈建伟[1,2] 苏幼坡[1,2] 杨梅[1,2] 

机构地区：[1]河北联合大学建筑工程学院 [2]河北省地震工程研究中心,河北唐山063009

出　　处：《力学与实践》2012年第5期57-60,共4页Mechanics in Engineering

基　　金：国家自然科学基金(50878073);河北省科学技术研究与发展计划(11276912D)资助项目

摘　　要：提出了一种基于力学转化模型的钢筋混凝土板柱节点抗冲切性能分析方法,该方法能够将传统弹性力学的研究问题用结构力学模型解决.通过OpenSees(Open System for Earthquake Engineering Simulation)计算平台进行建模,根据数值分析和试验结果的对比,确定和验证模型中的关键参数.结果表明,该数值模型能够很好模拟板柱节点的抗冲切性能,包括载荷-变形响应、刚度变化规律及变形分布规律等,为全面认识板柱节点的工作机理、受力特征及内力分布规律提供新的研究途径,同时为工程设计与实践提供理论指导.A method based on the mechanical transformation model is proposed to analyze the punching shear capacity of slab-column connections, which can transform the problem of elasticity into one of the structural analysis. The method can be realized by the computing platform OpenSees, and the key parameters of the model can be determined and validated through a comparison between the numerical simulation and experimental results. The results show that the proposed numerical method can simulate well the punching shear capacity of slab-column connections in terms of load-deformation curve, stiffness variation and distribution of deflection. A new approach can be used to study the mechanism, the mechanical characteristics and the distribution of internal forces, and provide a theoretical basis for design and practice.

关 键 词：板柱节点 抗冲切 力学模型 刚度 

分 类 号：TU375.2[建筑科学—结构工程]