884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

 

(1 清華大學(xué)土木工程系，北京 100084; 2 北京工業(yè)大學(xué)建筑工程學(xué)院，北京 100124；3 北京市城建技術(shù)開(kāi)發(fā)中心，北京 100055； 4 北京市建筑設(shè)計(jì)研究院，北京 100045)

［摘要］針對(duì)預(yù)制混凝土圓孔板承重體系，進(jìn)行了4個(gè)設(shè)置現(xiàn)澆邊緣構(gòu)件的雙片預(yù)制圓孔板剪力墻試件的擬靜力試驗(yàn)。結(jié)果顯示：試件墻體與基礎(chǔ)梁之間出現(xiàn)貫通的水平裂縫，邊緣構(gòu)件幾乎沿全高出現(xiàn)水平裂縫，預(yù)制墻布滿了斜裂縫；預(yù)制墻與現(xiàn)澆邊緣構(gòu)件交界面、預(yù)制墻與豎向連接縫交界面開(kāi)裂。試件的破壞形態(tài)為彎剪破壞。名義屈服前，墻底截面豎向鋼筋應(yīng)變分布基本符合平截面假定。位移延性系數(shù)大于5，極限位移角大于1/100。試件可等效為實(shí)墻，按現(xiàn)行規(guī)范計(jì)算其承載力。根據(jù)試驗(yàn)結(jié)果，提出了改進(jìn)預(yù)制墻與現(xiàn)澆混凝土之間連接豎縫的建議。

［關(guān)鍵詞］鋼筋混凝土雙片預(yù)制圓孔板剪力墻；現(xiàn)澆邊緣構(gòu)件；抗震性能；擬靜力試驗(yàn)

Tests of specimens of double piece prefabricated reinforced concrete hollow-core shear wall

Qian Jiaru¹, Zhang Weijing², Zhao Fengdong³, Li Lurong³, Meng Tao², Feng Baochun⁴(1 Tsinghua University, Beijing 100084, China; 2 Beijing University of Technology, Beijing 100124, China;3 Center of Construction Science & Technology, Beijing Municipal Commission of Housing and Urban-Rural Development, Beijing 100055, China; 4 Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:Quasi-static test results of four specimens of double piece prefabricated concrete hollow-core shear wall with cast-in-situ boundary elements indicate that: horizontal cracks run through the interface between the wall and the base beam, horizontal cracks distribute almost along the overall height of the boundary elements; diagonal cracks distribute on the whole surface of the prefabricated walls; vertical cracks run through the interface between the boundary element and the prefabricated wall; the failure mode of the specimens is bending-shear type; before the nominal yield, the strain distribution of the vertical reinforcements at the bottom of the wall satisfies the plan assumption; the displacement ductility is greater than 5 and the ultimate drift ratio is greater than 1/100；the hollow-core shear wall specimen can be equalized to the solid wall, its load-carrying capacity can be calculated by the current codes. According to the test results, the suggestions of improving the vertical connections between the prefabricated wall and the cast-in-situ concrete are presented.

Keywords:prefabricated concrete hollow-core shear wall; cast-in-situ boundary element; seismic behavior; quasi-static test

*北京市科委項(xiàng)目(項(xiàng)目編號(hào)：D09050603800000)。

作者簡(jiǎn)介：錢(qián)稼茹，教授，Email：qianjr@tsinghua.edu.cn。

參考文獻(xiàn)

［1］姚謙峰，黃煒. 新型住宅結(jié)構(gòu)體系發(fā)展與應(yīng)用研究綜述［J］. 施工技術(shù)，2003，32(10):6-9.

［2］潘志宏, 李愛(ài)群. 住宅建筑工業(yè)化與新型住宅結(jié)構(gòu)體系［J］. 施工技術(shù)，2008,37(2):1-4.

［3］丁大鈞. 墻體改革與可持續(xù)發(fā)展［J］. 建筑結(jié)構(gòu),2004，34(2):56-62.

［4］張微敬，孟濤，錢(qián)稼茹. 預(yù)制圓孔板剪力墻非線性有限元分析［J］. 建筑結(jié)構(gòu), 2010, 40(1):15-18.

［5］張微敬，孟濤，錢(qián)稼茹，等. 單片預(yù)制圓孔板剪力墻抗震性能試驗(yàn)［J］. 建筑結(jié)構(gòu), 2010，40(6).

［6］GB50010—2002混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］.北京：中國(guó)建筑工業(yè)出版社，2002.

［7］GB50011—2001建筑抗震設(shè)計(jì)規(guī)范［S］.北京：中國(guó)建筑工業(yè)出版社，2001.