(1 保定建业集团有限公司, 保定 071000; 2 江西省建材科研设计院有限公司, 南昌 330000;3 中国广核新能源控股有限公司, 北京 100070; 4 哈尔滨工业大学结构工程灾变与控制教育部重点实验室, 哈尔滨 150090; 5 哈尔滨商业大学能源与建筑工程学院, 哈尔滨 150076)

摘要: 既有砌体结构因风化等环境作用,其抗震性能一般不能满足现行相关规范要求。 为了提高既有砌体结构承载能力,在提高结构抗震性能的同时提升既有砌体结构的耐久性,以松原地区砌体结构震后加固实际工程为案例,在现行钢筋混凝土面层加固技术基础上,探讨了超高性能混凝土(UHPC)加固面层的加固性能。 使用 PKPM 建模软件对该实际工程震前、震后结构性能进行了分析,根据现行国家相关规范进行了不同加固方法后的结构性能验算,并进行了对比分析。 结果表明:UHPC 面层加固对既有砌体结构受压承载力和抗震承载力影响显著,配筋UHPC 面层抗震加固效果相对更优。

关键词: 既有砌体结构; 抗震加固; 超高性能混凝土; 参数分析; 抗震性能; 承载能力

中图分类号:TU362 文献标志码:A 文章编号:1002-848X(2022)24-0077-05

DOI:10. 19701 / j. jzjg. 20220089

Seismic performance analysis of existing masonry structure strengthened with ultra-high performance concrete

LI Dan1, LU Ya2, ZHANG Xuesen3, WU Xiangguo4, YAO Fangxue4, LI Hong5

(1 Baoding Construction Industry Go. , Ltd. , Baoding 071000, China; 2 Jiangxi Building Materials Researchand Design Institute Co. , Ltd. , Nanchang 330000, China; 3 CGN New Holdings Co. , Ltd. , Beijing 100070,China; 4 Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute ofTechnology, Harbin 150090, China; 5 School of Energy and Architecture Engineering, Harbin University of Commerce,Harbin 150076, China)

Abstract: Due to weathering and other environmental effects, the seismic performance of existing masonry structuresgenerally can not meet the current relevant codes requirements. In order to improve the bearing capacity of the existingmasonry structure and enhance the durability of the existing masonry structure while improving the seismic performance ofthe structure, taking the actual seismic strengthening project of masonry structure in Songyuan area as an example, basedon the current reinforcement technology of reinforced concrete surface, the reinforcement performance of ultra-highperformance concrete (UHPC) reinforcement surface was discussed. The structural performance of the actual project beforeand after the earthquake was analyzed by using PKPM software. According to the current national relevant codes, thestructural performance of different strengthening methods was checked and compared. The results show that UHPC surfacereinforcement has a significant impact on the compression bearing capacity and seismic bearing capacity of existing masonrystructures, and the seismic reinforcement effect of reinforced UHPC surface is relatively better.

Keywords:existing masonry structure; seismic strengthen; ultra-high performance concrete; parameter analysis; seismicperformance; bearing capacity

∗国家自然科学基金项目(52178195),江西省重点研发计划项目(20212BBG73003),厦门市建设科技计划项目(XJK2020-1-9)。

第一作者:李丹,学士,高级工程师,主要从事建筑结构方向研究,Email: 106974733@ qq. com。

[引用本文] 李丹,鲁亚,张学森,等. 采用超高性能混凝土加固后的既有砌体结构抗震性能分析[ J]. 建筑结构,2022,52(24):77-81. LI Dan,LU Ya,ZHANG Xuesen,et al. Seismic performance analysis of existing masonry structurestrengthened with ultra-high performance concrete[J]. Building Structure,2022,52(24):77-81.