- 摘 要
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(1 同濟(jì)大學(xué)土木工程學(xué)院建筑工程系, 上海 200092; 2 中國建筑股份有限公司,北京 100029; 3 中國建筑第八工程局有限公司, 上海 200112)
摘要: 為解決裝配整體式剪力墻豎向鋼筋連接套筒灌漿存在的灌漿質(zhì)量難保證、施工效率低等問題,提出了一種新型預(yù)制墻體豎向分布鋼筋不連接裝配整體式剪力墻結(jié)構(gòu)(SGBL 裝配整體式剪力墻結(jié)構(gòu))體系. 為確定 SGBL 裝配整體式剪力墻最大設(shè)計軸壓比限值和豎向分布鋼筋斷開后的設(shè)置需求,采用有限元數(shù)值模擬方法,考慮軸壓比、豎向分布鋼筋配筋率等參數(shù),探究了各參數(shù)對 SGBL 裝配整體式剪力墻抗震性能的影響. 研究表明:與試驗結(jié)果對比,精細(xì)化有限元模型合理;試件延性隨軸壓比增大顯著降低,結(jié)合試驗研究結(jié)果可取 SGBL 裝配整體式剪力墻最大設(shè)計軸壓比限值為 0. 5;豎向分布鋼筋斷開后,配筋率變化對剪力墻抗震性能影響較小,SGBL 裝配整體式剪力墻豎向分布鋼筋可按照最小配筋率設(shè)置.
關(guān)鍵詞: SGBL 裝配整體式剪力墻; 豎向分布鋼筋不連接; 有限元分析; 抗震性能
中圖分類號:TU318+. 1 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2023)05-0012-07
DOI:10. 19701 / j. jzjg. 20221377
Finite element analysis on seismic performance of monolithic assembled concrete shear wall with non-connected vertical distribution reinforcement
CAO Zhiwei1, ZHU Tong2, FU Qiang1, ZHANG Shiqian3, LIAO Xiandong3
(1 Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;2 China State Construction Engineering Co. , Ltd. , Beijing 100029, China; 3 China Construction EighthEngineering Division Co. , Ltd. , Shanghai 200112, China)
Abstract: To eliminate the shortcomings such as quality difficult assurance and low construction efficiency in the groutingsleeve in monolithic assembled concrete shear wall with connected vertical distribution reinforcement, a new type ofmonolithic assembled concrete shear wall structure with non-connected vertical distribution reinforcement (SGBL monolithicassembly shear wall structure) was proposed. In order to determine the maximum design axial compression ratio of SGBLmonolithic assembly shear wall and the setting requirements of vertically distributed reinforcement after disconnection, afinite element simulation method was used to explore the effect of parameters such as axial compression ratio and verticaldistribution reinforcement ratio on seismic performance of SGBL monolithic assembly shear wall. The results show that therefined finite element model is reasonable when compared with the experimental results; the ductility of specimensdecreases significantly with the increase of axial compression ratio, and combined with the experimental results, themaximum design axial compression ratio of SGBL monolithic assembly shear wall should be 0. 5; the vertical distributionreinforcement ratio has limited influence on the seismic performance of SGBL monolithic assembly shear wall when verticaldistribution reinforcements are disconnected, and the vertical distribution reinforcement ratio can be configured according tothe minimum reinforcement ratio.
Keywords: SGBL monolithic assembly shear wall; non-connected vertical distribution reinforcement; finite elementanalysis; seismic performance
∗國家自 然 科 學(xué) 基 金 ( 52078360), 山 東 省 重 點 研 發(fā) 計 劃 課 題: 綠 色 智 能 建 造 和 建 筑 工 業(yè) 化 關(guān) 鍵 技 術(shù) 與 成 套 設(shè) 備(2021CXGC011205).
第一作者:曹志偉,博士,工程師,主要從事裝配式建筑構(gòu)件設(shè)計、智能建造等方向研究,Email:czwcscec@ 163. com.
[引用本文] 曹志偉,朱彤,傅強(qiáng),等. 豎向分布鋼筋不連接裝配整體式剪力墻抗震性能有限元分析[ J]. 建筑結(jié)構(gòu),2023,53 ( 5):12-18. CAO Zhiwei,ZHU Tong,FU Qiang,et al. Finite element analysis on seismic performance ofmonolithic assembled concrete shear wall with non-connected vertical distribution reinforcement[ J]. Building Structure,2023,53(5):12-18.
