[编程][Programming][工具] [结构设计] “高规”结构抗震性能目标查询工具

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[结构设计][软件开发][性能设计]Development of Performance Based Seismic Design-Assisted Program for Chinese Code [基于中国规范的结构抗震性能设计辅助软件开发]

[结构设计][软件开发][性能设计]Development of Performance Based Seismic Design-Assisted Program for Chinese Code [基于中国规范的结构抗震性能设计辅助软件开发],崔济东,崔济东博士,www.jdcui.com

[Tool] Pushover Performance Point Solution Program [Pushover 分析性能点求解程序][Based on FEMA 440]

[Tool] 基于FEMA 440等效线性化法 Pushover分析方法 的性能点求解程序。A program for the Solution of Pushover Performance Point based on FEMA 440 Equivalent Linearization Method. FEMA 440等效线性化方法是众多Pushover分析方法中的一种,是ATC-40能力谱法(Capacity-Spectrum Method )的一种改进,其基本原理如下图所示。( Equivalent linearization procedure of FEMA 440 is a modification to the Capacity-Spectrum Method (CSM) of ATC-40. )When equivalent linearization is used as a part of a nonlinear static procedure that models the nonlinear response of a building with a SDOF oscillator, the objective is to estimate the maximum displacement response of the nonlinear system with an “equivalent” linear system using an effective period, Teff, and effective damping, βeff (see Figure above). The global force-deformation relationship shown in the above figure for a SDOF oscillator in acceleration-displacement response spectrum (ADRS) format is termed a capacity curve. The capacity curve shown in the above figure is developed using the conventional procedures of FEMA 356 or ATC-40. The effective linear parameters are functions of the characteristics of the capacity curve, the corresponding initial period and damping, and the ductility demand, µ.

[论文][Paper]基于变形的框架-剪力墙结构抗震安全性评估

将结构整体变形和构件变形作为双重控制指标,提出了罕遇地震作用下结构的安全性评估方法,对按GB 50011—2010《建筑抗震设计规范》设计的典型框架-剪力墙结构在罕遇地震作用下的安全性进行评估。结果表明:以层间位移角作为大震性能评估的唯一标准存在不足,结构的最大层间位移角与结构构件损伤没有直接关系,统计得出框架-剪力墙结构首层层间位移角限值为1/200;引入长周期反应谱影响系数以考虑地震波反应谱形状的影响,并给出建议影响系数取值为0.9~1.05;Ⅱ类~Ⅳ类场地土中7度及7.5度抗震设防的模型均满足安全性要求,8度设防出现个别模型不满足安全性要求。