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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(guó)建筑股份有限公司,北京 100029; 3 中國(guó)建筑第八工程局有限公司, 上海 200112)

摘要: 為探究帶窗洞的豎向分布鋼筋不連接裝配整體式剪力墻( SGBL 裝配整體式剪力墻) 的受力性能,采用ABAQUS 軟件建立 SGBL 裝配整體式剪力墻精細(xì)化有限元模型. 有限元模型采用 Cohesive 接觸和彈簧單元模擬預(yù)制墻板與后澆混凝土的拼縫,模擬所得荷載-位移曲線及破壞模式與文獻(xiàn)中試驗(yàn)結(jié)果均吻合良好. 在此基礎(chǔ)上,對(duì)比了帶窗洞 SGBL 裝配整體式剪力墻與帶窗洞現(xiàn)澆剪力墻受力性能的差異,并討論了軸壓比和洞口偏心等參數(shù)對(duì)帶窗洞 SGBL 裝配整體式剪力墻的承載力和剛度的影響. 結(jié)果表明:通過(guò)適當(dāng)增加邊緣現(xiàn)澆段豎向鋼筋,帶窗洞SGBL 裝配整體式剪力墻可擁有等同帶窗洞現(xiàn)澆剪力墻的承載力. 此外,軸壓比對(duì)兩類(lèi)開(kāi)洞剪力墻受力性能影響均較小,洞口偏心對(duì)帶窗洞 SGBL 裝配整體式剪力墻的承載力影響較小,當(dāng)洞口偏心率小于 20%時(shí),洞口偏心對(duì)剛度的影響小于 8%.

關(guān)鍵詞: SGBL 裝配整體式剪力墻; 帶窗洞剪力墻; 豎向分布鋼筋不連接; 抗側(cè)性能; 有限元分析

中圖分類(lèi)號(hào):TU318,TU398. 2 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)05-0030-06

DOI:10. 19701 / j. jzjg. 20221381

Study on mechanical behavior of monolithic assembled concrete shear wall with non-connected vertical distribution reinforcement and window opening

SONG Xiaobin1, CAI Qi1, XIAO Xuwen1,2, CAO Zhiwei1, LI Chang3, ZHANG Shiqian3

(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 investigate the mechanical behavior of monolithic assembled concrete shear wall with non-connectedvertical distribution reinforcement ( SGBL monolithic assembly shear wall) and window opening, a refined finiteelement model was developed in ABAQUS software. In the finite element model, Cohesive contact and springconnector were adopted for simulating the nonlinear behavior of the joints between precast wall panels and post-castconcrete. The load-displacement curves and the failure patterns obtained from the numerical analysis are in goodagreement with the test results in literature. Based on the numerical model, the differences of mechanical behaviors ofSGBL monolithic assembled shear wall with window opening and cast-in-situ shear wall with window opening, and theinfluence of parameters such as the axial compression ratio and the eccentricity of the window opening on the bearingcapacity and rigidity of the SGBL monolithic assembled shear wall with window opening was analyzed. The resultshows that by appropriately increasing the vertical reinforcement in the cast-in-situ boundary elements of the SGBLmonolithic assembled shear wall with window opening, the bearing capacity of the SGBL monolithic assembled shearwall with window opening can be close to that of cast-in-situ shear wall. In addition, the axial compression ratio haslittle effect on the mechanical behaviors of the two types of shear wall with window opening, and the eccentricity of theopening had little effect on the bearing capacity of SGBL monolithic assembly shear wall with window opening. For aneccentricity of opening less than 20%, the influence on the lateral stiffness of SGBL monolithic assembled shear wallwith window opening is less than 8%.

Keywords:SGBL monolithic assembled shear wall; shear wall with window opening; non-connected vertical distributionreinforcement; lateral resistance behavior; finite element analysis

∗國(guó)家自然科學(xué)基金項(xiàng)目(52078360).

第一作者:宋曉濱,博士,教授,主要從事混凝土和木結(jié)構(gòu)抗震性能研究,Email: xiaobins@ # edu. cn.

[引用本文] 宋曉濱,蔡琪,肖緒文,等. 帶窗洞的豎向分布鋼筋不連接裝配整體式剪力墻的受力性能分析[ J].建筑結(jié)構(gòu),2023,53(5):30-35. SONG Xiaobin, CAI Qi, XIAO Xuwen,et al. Study on mechanical behavior of monolithicassembled concrete shear wall with non-connected vertical distribution reinforcement and window opening[ J]. BuildingStructure,2023,53(5):30-35.