含有屈曲約束支撐平面框架的抗震性能試驗(yàn)研究
孔祥雄,羅開海,程紹革
- 摘 要
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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]為了研究含有屈曲約束支撐結(jié)構(gòu)的抗震性能,對(duì)含有屈曲約束支撐和普通支撐的平面框架進(jìn)行了試驗(yàn)研究。結(jié)合試件破壞現(xiàn)象及試驗(yàn)結(jié)果,對(duì)屈曲約束支撐的力學(xué)性能、破壞機(jī)理以及作用效果進(jìn)行了分析探討。同時(shí),還對(duì)試驗(yàn)過程進(jìn)行了數(shù)值模擬分析。試驗(yàn)及理論分析結(jié)果表明:與含普通支撐框架相比,含屈曲約束支撐的框架在提高承載力的同時(shí),還具有更穩(wěn)定的耗能能力;經(jīng)過適當(dāng)?shù)脑O(shè)計(jì),可以使屈曲約束支撐先于主體結(jié)構(gòu)進(jìn)入彈塑性狀態(tài),提高結(jié)構(gòu)的抗震性能。[關(guān)鍵詞]屈曲約束支撐;含有屈曲約束支撐的框架;抗震性能;低周反復(fù)試驗(yàn);耗能性能Experiment study on seismic behavior of steel plane frame with buckling-restrained bracesKong Xiangxiong,Luo Kaihai,Cheng Shaoge(Institute of Earthquake Engineering, China Academy of Building Research, Beijing 100013, China)Abstract:In order to study the seismic behavior of structure with buckling-restrained braces (BRB), a buckling-restrained braced frame (BRBF) and a conventional braced frame (CBF) were tested by low-reversed cyclic loading. Based on the phenomenon and results of BRB and BRBF, the damage mechanism of BRB and BRBF, the measured and theoretical mechanical properties of BRBF and CBF were analyzed and discussed. The results indicate that BRBF has better bearing capacity and energy dissipation characteristics than CBF. Through the proper design, BRB can get into elasto-plastic stage while the main frame is still in elastic stage, and the seismic behavior of main frame can be raised by the energy dissipation of BRB.Keywords:buckling-restrained brace (BRB); buckling-restrained braced frame (BRBF); seismic behavior; low-reversed cyclic loading test; energy dissipation characteristics“十一五”國家科技支撐計(jì)劃的重點(diǎn)項(xiàng)目(2006BAJ13B01)。作者簡介:孔祥雄,碩士,助理工程師,Email:kongxiangxiong@126.com。參考文獻(xiàn)[1] 汪家銘,中島正愛,陸燁. 屈曲約束支撐體系的應(yīng)用與研究進(jìn)展(Ⅰ)[J]. 建筑鋼結(jié)構(gòu)進(jìn)展,2005,7(1):1-12.[2] 汪家銘,中島正愛. 屈曲約束支撐體系的應(yīng)用與研究進(jìn)展(Ⅱ)[J]. 建筑鋼結(jié)構(gòu)進(jìn)展,2005,7 (2) :1-11.[3] 孫建華, 羅開海, 王亞勇, 等. 含屈曲約束耗能支撐的高層建筑地震作用效應(yīng)分析[J]. 工程抗震與加固改造, 2007, 29(4): 1-8.[4] 蔡克銓,黃彥智,翁崇興. 雙管式挫屈束制(屈曲約束)支撐之耐震行為與應(yīng)用[J]. 建筑鋼結(jié)構(gòu)進(jìn)展,2005,7(3): 1-8.[5] 李妍,吳斌,王倩穎,等. 防屈曲鋼支撐阻尼器的試驗(yàn)研究[J]. 土木工程學(xué)報(bào),2006,39(7):9-14.[6] 程光煜,葉列平,許秀珍,等. 防屈曲耗能鋼支撐的試驗(yàn)研究[J]. 建筑結(jié)構(gòu)學(xué)報(bào),2008,29(1):31-39.[7] 羅開海,孔祥雄,程紹革.一種新型屈曲約束支撐的研制與試驗(yàn)研究[J]. 建筑結(jié)構(gòu),2010,40(10):1-6.[8] GB50011—2001 建筑抗震設(shè)計(jì)規(guī)范[S]. 北京:中國建筑工業(yè)出版社,2001.[9] ANSI/AISC341-05 Seismic provisions for structural steel buildings[S]. Chicago: American Inst. of Steel Construction,Inc., 2005.第40卷 第10期建筑結(jié)構(gòu)2010年10月.
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