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鋼筋混凝土剪力墻拉剪受力性能試驗(yàn)
王鐵成1,2,賴天宇1,趙海龍1,2,林 海3,汪洋3
摘 要

(1 天津大學(xué)建筑工程學(xué)院, 天津 300072; 2 天津大學(xué)濱海土木工程結(jié)構(gòu)與安全教育部重點(diǎn)實(shí)驗(yàn)室, 天津 300072; 3 奧雅納工程顧問(wèn), 深圳 518048)

[摘要]在設(shè)防或罕遇地震情況下,超高層建筑底部的混凝土剪力墻在地震作用下會(huì)出現(xiàn)偏心受拉的工況。通過(guò)對(duì)4片受拉混凝土剪力墻試件和1片配置抗滑移鋼筋的受拉混凝土剪力墻試件進(jìn)行擬靜力試驗(yàn),研究受拉混凝土剪力墻的破壞特征、滯回特性、承載力、剛度和耗能能力。研究表明:軸拉力影響混凝土剪力墻破壞過(guò)程的裂縫分布和破壞形態(tài);軸拉力可顯著降低混凝土剪力墻的承載力、側(cè)向剛度和耗能能力;配置抗滑移鋼筋能提高受拉混凝土剪力墻的承載力和耗能能力;《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》(GB 50010—2010)中受拉剪力墻受剪承載力計(jì)算公式滿足設(shè)計(jì)的安全要求。

[關(guān)鍵詞]混凝土剪力墻; 抗滑移鋼筋; 軸拉力

中圖分類號(hào):TU375文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2017)02-0064-06

 

Tensile-shear mechanical performance test of reinforced concrete shear wall

Wang Tiecheng 1,2, Lai Tianyu 1, Zhao Hailong 1,2, Lin Hai 3, Wang Yang 3

(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Key Laboratory of Coast Civil Structure and Safety, Ministry of Education, Tianjin University, Tianjin 300072, China; 3 ARUP, Shenzhen 518048, China)

Abstract:In the case of fortification or rare earthquake, the concrete shear wall at the bottom of the super high-rise building appears eccentric tension working condition. The pseudo static tests were conducted on four pieces of tensile concrete shear wall specimens and one piece of tensile concrete shear wall specimen with slip resistant rebar. The failure mechanism, hysteretic behavior, load-carrying capacity, stiffness and energy dissipation ability of the tensile concrete shear wall were studied. Research results show that: axial tensile force impacts fracture distribution and the failure pattern in the failure process of concrete shear wall; axial tensile force can significantly reduce the bearing capacity, lateral stiffness and energy dissipation of the concrete shear wall; configuration of slip resistant rebar can improve the bearing capacity and energy dissipation ability of the tensile concrete shear wall. In the Code for design of concrete structures (GB 50010—2010), the calculation formula of shear capacity of the tensile shear wall can meet the safety requirements of the design.

Keywords:concrete shear wall; slip resistant rebar; axial tensile force

 

通訊作者:趙海龍,博士,Email: 1227412714@qq.com。

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