- 摘 要
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(1 保定建業(yè)集團有限公司, 保定 071000; 2 江西省建材科研設(shè)計院有限公司, 南昌 330000;3 中國廣核新能源控股有限公司, 北京 100070; 4 哈爾濱工業(yè)大學結(jié)構(gòu)工程災(zāi)變與控制教育部重點實驗室, 哈爾濱 150090; 5 哈爾濱商業(yè)大學能源與建筑工程學院, 哈爾濱 150076)
摘要: 既有砌體結(jié)構(gòu)因風化等環(huán)境作用,其抗震性能一般不能滿足現(xiàn)行相關(guān)規(guī)范要求。 為了提高既有砌體結(jié)構(gòu)承載能力,在提高結(jié)構(gòu)抗震性能的同時提升既有砌體結(jié)構(gòu)的耐久性,以松原地區(qū)砌體結(jié)構(gòu)震后加固實際工程為案例,在現(xiàn)行鋼筋混凝土面層加固技術(shù)基礎(chǔ)上,探討了超高性能混凝土(UHPC)加固面層的加固性能。 使用 PKPM 建模軟件對該實際工程震前、震后結(jié)構(gòu)性能進行了分析,根據(jù)現(xiàn)行國家相關(guān)規(guī)范進行了不同加固方法后的結(jié)構(gòu)性能驗算,并進行了對比分析。 結(jié)果表明:UHPC 面層加固對既有砌體結(jié)構(gòu)受壓承載力和抗震承載力影響顯著,配筋UHPC 面層抗震加固效果相對更優(yōu)。
關(guān)鍵詞: 既有砌體結(jié)構(gòu); 抗震加固; 超高性能混凝土; 參數(shù)分析; 抗震性能; 承載能力
中圖分類號:TU362 文獻標志碼:A 文章編號: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
∗國家自然科學基金項目(52178195),江西省重點研發(fā)計劃項目(20212BBG73003),廈門市建設(shè)科技計劃項目(XJK2020-1-9)。
第一作者:李丹,學士,高級工程師,主要從事建筑結(jié)構(gòu)方向研究,Email: 106974733@ qq. com。
[引用本文] 李丹,魯亞,張學森,等. 采用超高性能混凝土加固后的既有砌體結(jié)構(gòu)抗震性能分析[ J]. 建筑結(jié)構(gòu),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.
