【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。更多还原

【Abstract】 Restoring force model plays a very important role in the research of earthquakeresistant 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.更多还原