RC框架结构地震塑性损伤分析  

Analyses of seismic plastic-damage to reinforced concrete frames

作　　者：樊长林[1,2] 路国运[1] 张善元[1] 

机构地区：[1]太原理工大学应用力学研究所,山西太原030024 [2]太原城市职业技术学院,山西太原030027

出　　处：《世界地震工程》2011年第3期169-173,共5页World Earthquake Engineering

基　　金：国家自然科学基金项目(11072167);山西省自然科学基金项目(2008021006)

摘　　要：基于经典塑性模型与连续损伤模型,根据广义应力空间塑性力学确定了塑性变形的演化法则,文中发展了一种地震塑性损伤分析方法。用来进行混凝土框架结构的抗震分析,将塑性损伤的本构关系运用于两端具有塑性铰的梁模型,模拟框架结构的梁柱。同时该方法的损伤指数可以确定结构各单元和整体的地震时性能,确定结构极限荷载,算例表明该方法具有可靠的精度。A seismic plastic-damage analyses method for reinforced concrete frames is developed in this article, based on the classical plastic model and the continuum damage model. The Plastic-damage constitutive law is imple- mented into a beam model for framed structures, in which these are described by elastic beams and columns with two inelastic hinges at their ends. A damage index is useful in evaluating the state of structural members and a meaningful global damage index for whole structure are introduced. The method together with the member and glob- al damage indices, are adequate for the computation of the limit load of reinforced concrete frames subjected to seis- mic actions. Examples of applications of the methodology to the non-linear analysis of reinforced concrete framed structures were finally given. The result indicates that the method has reliable accuracy.

关 键 词：抗震塑性损伤分析 非线性动力分析 整体损伤指数 钢筋混凝土框架 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]