灾难地震作用下平板网架结构整体安全运行设计方法研究  

Research on the Design Methods of the Safe Operation of the Integral Plate Truss Structure under the Devastating Earthquake

作　　者：南力菲 李海旺[1] 赵茜[1] 

机构地区：[1]太原理工大学建筑与土木工程学院,山西太原030024

出　　处：《工程抗震与加固改造》2014年第4期50-55,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金项目(50878137);山西省科技攻关项目(20080321086);山西省回国留学人员科研资助项目(2009-26)

摘　　要：针对大跨度钢结构体系强震下的弹塑性性能评定,目前我国抗震设计规范缺乏相关规定,同时考虑避难救灾建筑的功能要求和设防特点,本文采用集中塑性铰理论和SAP2000软件,以某双层平板网架体育练习馆为例,进行基于"灾难地震基本运行"的抗震性能设计和性能评定方法的研究。结果表明:不同地震波作用下,该结构的破坏类型均为延性强度失效破坏,适宜地震避难所的功能要求;基于失效形态,通过对原结构"薄弱部位"进行加强,可以较小的代价使普通体育练习馆实现"灾难地震基本运行"的设防要求;基于塑性铰理论进行"灾难地震基本运行"的抗震设计较为简单,易被工程师掌握使用。For the ＇ Code for Seismic Design of Buildings＇ lacks the evaluation of elastoplastic performance standard for large span steel structure system under devastating earthquake, as well as functional requirements and design features of emergency building, the plastic hinge theory and SAP2000 software are used to research design and performance evaluation method with a double - layer grid sports practice hall, which are studied based on the ＂the basic operation under devastating earthquake＂ requirement. The experimental results show that the failure types of the structure under different seismic waves are ductility strength failure ; based on the failure form, through strengthening “weak parts” of the original structure, an ordinary sports practice hall can meet “the basic operation under devastating earthquake” requirement at a lower costs; the theory of plastic hinge on seismic design is relatively simple, and the design method is easy to grasp and used by the engineers.

关 键 词：平板钢网架 抗震避难与救灾据点 弹塑性时程分析 灾难地震 

分 类 号：TU356[建筑科学—结构工程] TU352.11