地震工程学报2025，Vol.47Issue(5)：1012-1022,1054,12.DOI:10.20000/j.1000-0844.20240118001
损伤古砖塔的地震响应与破坏模式研究
Seismic response and failure modes of damaged ancient brick pagodas
摘要
Abstract
The seismic response and failure modes of damaged ancient brick pagodas were investi-gated using a numerical model of Kaiyuan Temple Pagoda in Binxian County,Shaanxi Province.The model was established using the finite element software ABAQUS.Three seismic waves(El-Centro wave,Taft wave,and Lanzhou artificial wave)were input as ground motions.After four damage patterns were implanted,the seismic responses of the damaged pagoda under various damage conditions were calculated.The dynamic characteristics of the pagoda structure were ana-lyzed,and acceleration amplification factors and story drift ratio curves along the structure height were obtained in all cases.Based on tensile damage and plastic strain distribution characteristics,seismic failure modes and the vulnerable locations of the Kaiyuan Temple Pagoda under different damage states were studied.Results indicate the following:(1)Under seismic action,the mortar layer exhibits initial cracking and failure,and damage subsequently propagates toward floor cor-ners;(2)the second and seventh stories suffer the most severe damage and are thus identified as vulnerable layers;and(3)failure severity closely correlates with initial damage.The most severe damage occurs when the initial damage on the 4th floor is set at 30％,followed by initial damage of 20％on the 4th/1st floor;the lightest damage occurs without any initial damage.关键词
砖石古塔/有限元模型/损伤分析/地震响应/动力特性Key words
masonry pagoda/finite element model/damage analysis/seismic response/dynamic characteristic分类
建筑与水利引用本文复制引用
田鹏刚,申利娜,卢俊龙,王振山,田建勃..损伤古砖塔的地震响应与破坏模式研究[J].地震工程学报,2025,47(5):1012-1022,1054,12.基金项目
国家自然科学基金资助项目(51778527) （51778527）
国家重点研发计划项目(2023YFF0906000) （2023YFF0906000）
