压弯构件恢复力模型骨架曲线的研究  

STUDY OF RESTORING FORCE MODEL SKELETON CURVE OF PRESS-BENDING COMPONENT

作　　者：赵忠虎[1] 张国庆[2] 

机构地区：[1]四川大学水利水电学院,成都610065 [2]郑州铁路局科研所,郑州450052

出　　处：《工业建筑》2007年第9期73-76,共4页Industrial Construction

基　　金：国家973项目资助(2002CB412707)

摘　　要：恢复力模型选择是结构抗震中一个很重要的问题。将截面的内力与变形看作广义的应力与应变,运用塑性位势理论、流动法则、强化模型和混凝土屈服准则,从理论上推导出压弯构件力和变形之间的关系,即恢复力模型的骨架曲线。结合建筑规范得到方程需要的参数。经验证本文模型和试验能够较好地吻合。Restoring force model plays a very important role in the research of earthquake-resistant structure, Taking the deformation and internal force of a section as generalized stress-strain, utilizing plastic potential theory＂ and flow rule as well as hardening model and concrete yield criterion, it is induced the relation between force and deformation of frame columns （the skeleton curve of restoring force model）. The choice of equation parameters and their identification are discussed according to the building code, and it is proved that the model agrees with the test results well.

关 键 词：恢复力 骨架曲线 塑性位势理论 

分 类 号：TU311.4[建筑科学—结构工程]