生土建筑的抗震性能分析与评估  

Analysis and evaluation on seismic performance of earth architectures

作　　者：刘成清[1] 陈驰[1] 何广杰[1] 赵世春[1] 吴昊[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031

出　　处：《建筑结构》2014年第19期67-71,共5页Building Structure

基　　金：国家自然科学基金项目(51278428);中央高校基本科研业务费专项资金资助项目(2682014CX066)

摘　　要：为了研究生土建筑抗震性能及其抗震性能评估方法,首先通过对汶川地震和芦山地震中的生土建筑震害进行调查,分析了生土建筑的震害机理,根据震害调查和结构抗震原理提出用生土建筑墙率评估其抗震性能的方法。然后利用有限单元法,对四个典型生土建筑进行在不同地震波作用下的弹塑性时程分析,研究了其抗震性能,结果表明,生土建筑延性较差,抗剪和抗弯强度均较低,抗震性能比较差,震害比其他结构要严重;所提出的生土建筑墙率可以快速准确地评估其抗震性能。最后提出了改善生土建筑抗震性能的方法和措施。To study seismic performance and relevant evaluation method of earth architectures,seismic damage investigations of earth architectures suffered from Wenchuan earthquake and Lushan earthquake were carried out.The seismic damage mechanism was analyzed and the wall ratio was put forward to evaluate the seismic performance based on the seismic damage investigations and structural seismic principles.By finite element method,elastic-plastic time-history analyses of four typical earth architectures were carried out under different seismic waves to study the seismic performance of earth architectures.The results show that the ductility of earth architectures is poor with lower shear strength and the bending strength,and the seismic damage of earth architectures is more serious than that of other structures due to the poor seismic performance.The wall ratio can evaluate the seismic performance of earth architectures rapidly and accurately.Some methods and measures were proposed to improve seismic performance of earth architectures.

关 键 词：生土建筑 震害机理 抗震性能 墙率 数值模拟 评估 

分 类 号：P315.9[天文地球—地震学] TU36[天文地球—固体地球物理学]