新建RC框架樓梯改進(jìn)措施的試驗研究及有限元分析*
尹保江,肖疆,程紹革,趙向麗
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(中國建筑科學(xué)研究院工程抗震研究所, 北京100013)[摘要]采用滑動支座對RC框架樓梯模型進(jìn)行改進(jìn),通過模型低周反復(fù)荷載試驗及有限元分析驗證改進(jìn)措施的有效性。最后提出該構(gòu)造措施可以應(yīng)用于其他形式樓梯的設(shè)計建議,并對日本的兩種處理措施進(jìn)行分析評述,可對今后規(guī)范和標(biāo)準(zhǔn)圖集的修訂提供幫助。[關(guān)鍵詞]框架結(jié)構(gòu); 樓梯; 改進(jìn)措施; 低周反復(fù)荷載試驗; 有限元分析中圖分類號:TU375.4 文獻(xiàn)標(biāo)識碼:A 文章編號:1002-848X(2014)05-0021-04Experimental research and finite element analysis on an improvement measure for new constructed staircases of RC frame structuresYin Baojiang, Xiao Jiang, Cheng Shaoge, Zhao Xiangli(Institute of Earthquake Engineering, China Academy of Building Research, Beijing 100013, China)Abstract: An improvement measure named slipping-foot was adopted for the staircases of RC frame structures. The measure was verified to be effective by the low-cyclic reversed loading test and finite element analysis. It is recommended that the slipping-foot measure can be applied in other types of staircases. Two improvement measures used in Japan were analyzed and discussed. It can provide reference for the revision of code and standard atlas.Keywords: frame structure; staircase; improvement measure; low-cyclic reversed loading test; finite element analysis*住房和城鄉(xiāng)建設(shè)部支持項目(2009-k2-17),中國建筑科學(xué)研究院基金項目(20080122330730006)。作者簡介:尹保江,碩士,研究員,Email:bjyin@sina.com。參考文獻(xiàn)[1]尹保江,黃世敏,程紹革,等. 汶川地震中建筑樓梯震害原因分析[M]//汶川地震建筑震害調(diào)查與災(zāi)后重建分析報告.北京:中國建筑工業(yè)出版社,2008.[2]肖疆,尹保江,程紹革,等. RC框架結(jié)構(gòu)樓梯震害的試驗研究及有限元分析[J]. 建筑結(jié)構(gòu),2014,44(5):12-16.[3]陸新征,葉列平,繆志偉,等.建筑抗震彈塑性分析——原理、模型與在ABAQUS,MSC.MARC和SAP2000上的實踐[M].北京:中國建筑工業(yè)出版社,2009.