既有双曲砖拱结构抗震性能分析与加固对策研究  

Seismic performance analysis and strengthening strategies of existing double-curvature brick structures

作　　者：杨锐 毋剑平[1] 孙洁[2] 朱兆晴 罗开海[1] YANG Rui;WU Jianping;SUN Jie;ZHU Zhaoqing;LUO Kaihai(China Academy of Building Research,Beijing 100013,China;Hefei University of Technology Design Institute,Hefei 230001,China;Anhui Architectural Design and Research Institute Co.,Ltd.,Hefei 230051,China)

机构地区：[1]中国建筑科学研究院,北京100013 [2]合肥工业大学设计院有限责任公司,安徽合肥230001 [3]安徽省建筑设计研究总院股份有限公司,安徽合肥230051

出　　处：《地震工程与工程振动》2022年第6期171-183,共13页Earthquake Engineering and Engineering Dynamics

基　　金：中国建筑科学研究院有限公司院士工作站科研基金项目(20220122330730021);国家重点研发计划项目(2022YFC3803000);建研科技科研基金项目(20201902977180011)。

摘　　要：文中在阐述双曲砖拱受力特点与震害特征的基础上,简要梳理了既有双曲砖拱结构加固改造中存在的问题。然后以某既有双曲砖拱厂房改造为例,对其在静载和地震工况下的力学性能及响应规律进行有限元分析与总结。结果表明:下弦拉杆系统是维持双曲砖拱屋盖稳定受力状态的关键环节,工程中应给予重点关注;完整的双曲砖拱和下拉杆屋盖体系是自平衡的受力体系,受地震作用影响较小;山墙是此类建筑横向抗震的主要构件,若与屋盖结构拉结不足则容易存在局部振动,地震中易受损害,应注意采取加固和改善措施。最后针对仿真分析中发现的问题,提出了进一步加固完善的建议方案。This paper briefly reviews the problems existing in the reinforcement and reconstruction of existing double curved brick arch structures on the basis of introducing its mechnical and seismic damage characteristics.Then,taking the reconstruction of an existing double curved brick arch plant as an example,the mechanical properties and response under static load and earthquake conditions are analyzed and summarized by the finite element method. The results show that the lower chord tie rod system is the key link to maintain stable of the double curved brick arch roof,which should be paid more attention in engineering. The complete double curved brick arch and bottom tie rod roof system is a self-balanced system,and the earthquake has little effect on it. Gable is the main seismic component under lateral force. If the connection with roof structure is insufficient,it is prone to local vibration and vulnerable to damage in earthquakes,which should be reinforced and taken effective measures.Finally,some suggestions for further reinforcement and improvement are put forward in view of the problems found in the simulation analysis.

关 键 词：砌体结构 双曲砖拱屋盖 抗震加固 有限元模拟 

分 类 号：TU352.11[建筑科学—结构工程]