摘要
以小雁塔结构为原型,通过试验研究建立其材料本构模型;应用IDA分析方法,建立IDA分析曲线并对小雁塔结构进行增量动力弹塑性分析,判断小雁塔结构的最不利位置,定义IDA分析的极限状态;将IDA曲线的斜率下降幅值与小雁塔结构性能水准相对应,划分小雁塔结构的性能水准指标;通过对小雁塔结构在增量地震动强度作用下地震响应分析和不同性能状态下各层的楼层位移和层间位移角的变化规律,对小雁塔结构进行了抗震性能评估;研究表明:基于IDA分析方法的小雁塔抗震性能评估可以考虑结构抗震能力的随机因素,精确地描述小雁塔结构在地震过程中的行为。该方法为类似砖石古塔结构的抗震性能评估提供了新途径。
The ancient tower structure is an important historical and cultural heritage.Based on the structure of the small goose pagoda,the material constitutive model was obtained through the experimental study.The incremental dynamic analysis(IDA)method was adopted to establish the IDA curve and to determine the weak parts of the small wild goose pagoda.Considering the historical particularity of the small wild goose pagoda,the limit states of the IDA analysis are defined by matching the slope of the IDA curve to the performance level of the small wild goose pagoda.The seismic performance of the small wild goose pagoda was evaluated by analysis of the story drift and the inter-story drift ratio of under the incremental ground motion intensities.Using the IDA method,the seismic performance evaluations can consider random factors such as the uncertainties of demand and capacity,and can get an accurate prediction of the seismic behavior of the small wild goose pagoda.This study provides a new approach for the seismic performance evaluation of historic structures.
作者
杨涛
王社良
刘德明
李彬彬
YANG Tao;WANG Sheliang;LIU Deming;LI Binbin(School of Urban Planning and Municipal Engineering,Xi'an Polytechnic University,Xi'an 710048,China;School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China)
出处
《世界地震工程》
CSCD
北大核心
2020年第1期162-174,共13页
World Earthquake Engineering
基金
陕西省自然科学基础研究计划(2019JQ-578)
陕西省教育厅项目(18JK0332)
国家自然科学基金(51678480)
关键词
IDA分析方法
地震响应
抗震性能评估
极限状态
IDA analysis method
seismic response
seismic performance evaluation
limit state
