非线性钢筋混凝土抗震结构的随机破损分析与设计

本文以钢筋混凝土结构动力试验与结构分析为基础,提出了根据结构设计参数确定恢复力模型参数的方法,建立了适合于具体设计的恢复力模型;在此基础上,利用统计等效线性化方法分析了结构的随机变形反应与随机滞回耗能反应,求得了以变形与滞回耗能的线性组合定义的综合破坏指数,提出了以平均破坏指数为安全度指标的设计方法,并给出了具体设计算例。

Random Damage Analysis and Design of Nonlinear Aseismic Reinforced Concrete Structures

In this paper,based on the dynamical experiment results and the elastoplasticanalysis of the reinforced concrete structures,a technique to determine theparameters in the restoring force model is presented.The corresponding model suita-ble for the structural design is established.Then,by using the technique ofstochastical equivalent linearization,the random deformation and hysteretic energydissipated of the structure subjected to earthquake are analysed and some statisticalmoments of the comprehensive damage index defined by the linear combination ofdeformation and hysteretic energy dissipated are obtained.Furthermore,by takingthe mean damage index as the safety index,a feasible method of nonlinear aseismicdesign is presented for the reinforced concrete structures.Finally,the method pres-ented in the paper are used in the analysis and design of a typical structure.