組合套管式新型防屈曲耗能支撐試驗研究及工程應(yīng)用
徐繼東，吉小萍，黃坤耀，李靜，劉卓
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(上海維固建筑結(jié)構(gòu)設(shè)計有限公司，上海 200235)［摘要］針對傳統(tǒng)防屈曲耗能支撐在應(yīng)用上的缺點，設(shè)計了一種新型防屈曲耗能支撐。該支撐采用型鋼組合套管，有自重小、易加工、制作周期短、質(zhì)量容易保證等優(yōu)點。對該支撐進行了反復(fù)拉壓試驗研究，試驗滯回曲線飽滿，相對變形達到1/30時無破壞跡象，表明該支撐具有良好的耗能能力和穩(wěn)定的工作性能，適合在工程實踐中應(yīng)用。［關(guān)鍵詞］防屈曲耗能支撐;滯回曲線;結(jié)構(gòu)加固Experimental study and application of a new-type buckling restrained brace with combined section steel as sleeveXu Jidong, Ji Xiaoping, Huang Kunyao, Li Jing, Liu Zhuo(Shanghai WEGO Building Structure Design Co., Ltd., Shanghai 200235, China)Abstract:A new type of buckling restrained brace (BRB) is designed against the shortages of traditional BRB in application area. This new brace has many merits such as light self-weight, easy to manufacture, short producing period and reliable quality control for its section-steel thimble combination. The result of reduplicate draw-press circle experiment of this brace shows that, the hysteretic curve is plump and stable, and while the relative distortion reached 1/30, no destruction happens. The result indicates that this brace has good energy-dissipation capability and stable workability, and it is suitable to be applied in construction projects.Keywords:buckling restrained brace; hysteretic curve; structure strengthening作者簡介：徐繼東，工學(xué)碩士，Email:yanfa@wegotech.com.cn。參考文獻［1］Recommended Provisions for Buckling-restrained Brace Frames［S］. America Institute of Construction，2001.［2］BLACK C J, MAKRIS N, AIKEN I D. Component testing, seismic evaluation and characterization of buckling-restrained braces［J］. Journal of Structural Engineering, ASCE, 2004, 130(6): 880-894.［3］SABELLIR. Recommended provisions for buckling-restrained braced frames［J］. Engineering Journal AISC, 2004, 41(4): 155-175.［4］CHEN C C,WANGCH, HWANGTC. Buckling strength of buckling inhibited braces［C］//Proceedings, 3rd Japan-Korea-Taiwan Joint Seminar on Earthquake Engineering for Building Structures, Tai-pei Taiwan, 2001: 265-271.［5］周云.防屈曲耗能支撐結(jié)構(gòu)設(shè)計與應(yīng)用［M］.北京：中國建筑工業(yè)出版社，2007.［6］GB/T228—2002金屬材料室溫拉伸試驗方法［S］.北京：中國標準出版社，2002.［7］錢洪濤，褚洪民，鄧雪松. 防屈曲支撐的研究與應(yīng)用進展［J］. 防災(zāi)減災(zāi)工程學(xué)報，2007，27(增刊)：225-233.［8］汪家銘，中島正愛，陸燁(譯).屈曲約束支撐體系的應(yīng)用與研究進展(Ⅰ)［J］. 建筑鋼結(jié)構(gòu)進展，2005，7(1):1-12.
