- 摘 要
-
(1 清華大學(xué)土木工程系清華大學(xué)結(jié)構(gòu)工程與振動教育部重點實驗室，北京 100084；2 北京東方京寧建材科技有限公司，北京 100083)
［摘要］按照“強節(jié)點弱構(gòu)件”的思想，設(shè)計并完成了5個不同配筋形式的足尺現(xiàn)澆鋼筋混凝土空心樓板-剪力墻節(jié)點試件在板端往復(fù)荷載作用下的試驗研究。試驗結(jié)果表明：試件的破壞模式與預(yù)期模式相同，實測名義屈服荷載與設(shè)計承載力基本相符；試件空心板橫截面滿足平截面假定；邊肋中布置箍筋或預(yù)應(yīng)力筋均可提高空心板的抗剪承載力；試件的極限位移角大于1/40，其中彎曲破壞試件的極限位移角大于1/25，位移延性比大于4；試件的滯回耗能穩(wěn)定，模擬實際配筋的試件J5相對耗能比最好。說明按照文中建議的設(shè)計方法，可以滿足現(xiàn)澆鋼筋混凝土空心樓板-剪力墻節(jié)點的抗震延性設(shè)計要求。
［關(guān)鍵詞］現(xiàn)澆；鋼筋混凝土空心樓板；剪力墻；節(jié)點；抗震性能
Seismic behavior of cast-in-place reinforced concrete hollow slab-shear wall joints
Zhao Zuozhou1，Ke Jianghua1，Qian Jiaru1，Xu Yan2(1 Key Laboratory of Structural Engineering and Vibration of China Education Ministry,Department of Civil Engineering, Tsinghua University, Beijing 100084，China；2 Beijing Dongfangjingning Building Material Science and Technology Co.,Ltd., Beijing 100083，China)
Abstract:According to principle of “strong joint and weak member”, five full-scale cast-in-place reinforced concrete hollow slab-shear wall joint specimens with different reinforcement details have been tested under reversed cyclic loading. From the experimental results it is found that the real failure modes of the five specimens are the same as the designed failure modes. The measured nominal yield loads of the 5 specimens are close to the predicted values. Measured reinforcement strain distributions at the different positions reveal that the cross section of the hollow slab fulfills the assumption of the plan section remaining plan before yield load. Arranging stirrups or prestress tendons in the edge ribs can increase the shear resisting capacity of a hollow slab. The measured ultimate shear displacement angles of the five specimens are larger than 1/40 and the ultimate shear displacement angle of the flexural failure specimens are larger than 1/25- The displacement ductility ratios of the specimens are larger than 4- The hysteretic energy dissipation capacity of each specimen is stable and increases with the maximum control displacement increased. The specimen J5 which simulates the real reinforcement detailing has the largest hysteretic energy dissipation ratio. These test results prove that the cast-in-place reinforced concrete hollow slab-shear wall joints can meet the seismic design code requirements using the proposed design method.
Keywords:cast in place; reinforced concrete hollow slab; shear wall; joint; seismic behavior
作者簡介：趙作周，博士，副教授，Email：zzzhao@tsinghua.edu.cn。
參考文獻(xiàn)
［1］輕質(zhì)材料填充空心樓蓋結(jié)構(gòu)技術(shù)［R］.北京：北京東方京寧建材科技有限公司，2007.
［2］徐有鄰，程志軍，等.現(xiàn)澆混凝土筒芯樓板受剪承載力的試驗研究［C］//全國現(xiàn)澆混凝土空心樓蓋結(jié)構(gòu)技術(shù)交流會論文集，2005.
［3］張瀑，魯兆紅.現(xiàn)澆雙向空心樓板性能試驗研究［C］//全國現(xiàn)澆混凝土空心樓蓋結(jié)構(gòu)技術(shù)交流會論文集，2005.
［4］CECS175:2004現(xiàn)澆混凝土空心樓蓋結(jié)構(gòu)技術(shù)規(guī)程［S］.北京：中國計劃出版社，2004.
［5］GB50010—2002混凝土結(jié)構(gòu)設(shè)計規(guī)范［S］.北京：中國建筑工業(yè)出版社，2002.
［6］過鎮(zhèn)海，時旭東.鋼筋混凝土原理和分析［M］.北京：清華大學(xué)出版社，2003.
［7］JGJ101—96建筑抗震試驗方法規(guī)程［S］.北京：中國建筑工業(yè)出版社，1997.
