新型混合聯(lián)肢墻弱節(jié)點擬靜力試驗及有限元分析*
宋安良1,蘇明周1,李旭東2
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(1 西安建筑科技大學(xué)土木工程學(xué)院, 西安 710055;2 蘭州有色冶金設(shè)計研究院有限公司, 蘭州 730000)[摘要]為了研究含型鋼邊緣構(gòu)件的混合聯(lián)肢墻弱節(jié)點的抗震性能,對一個足尺混合聯(lián)肢墻弱節(jié)點模型進行了低周反復(fù)荷載試驗,對滯回曲線、骨架曲線、破壞模式、延性等進行了分析。結(jié)果表明,混合聯(lián)肢墻弱節(jié)點滯回曲線飽滿,耗能能力良好。利用ABAQUS軟件對試件的性能進行了低周反復(fù)荷載作用下的有限元模擬,將計算結(jié)果和試驗結(jié)果進行對比,兩者吻合較好。在此基礎(chǔ)上對節(jié)點進行了參數(shù)分析,結(jié)果表明:節(jié)點域鋼腹板體積的大小對節(jié)點承載力有較大的影響,屈服荷載和極限荷載都隨著節(jié)點域鋼腹板體積的增大而增大,且近似地呈線性關(guān)系。[關(guān)鍵詞]混合聯(lián)肢墻; 鋼連梁; 擬靜力試驗; 有限元分析; 粘結(jié)滑移中圖分類號:TU318,TU398 文獻標(biāo)識碼:A 文章編號:1002-848X(2015)10-0017-04Quasi-static test and finite element analysis of weak connection in innovative hybrid coupled wall systemSong Anliang1, Su Mingzhou1, Li Xudong2(1 School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China; 2 Lanzhou Engineering & Research Institute of Nonferrous Metallurgy Co., Ltd., Lanzhou 730000, China)Abstract:In order to study the seismic performance of weak connection in innovative hybrid coupled wall system, an experiment of full-scale weak connection in hybrid coupled shear wall system under low cyclic loading was conducted. The hysteretic loop, skeleton curve, failure mode and ductility were analyzed. The results show that the hysteretic loop is in a plump-shape, and energy dissipation capacity of the connection is well. Finite element analysis by software of ABAQUS was used to simulate the property of the specimen under low cyclic loading. The calculation results agreed with the test results very well. Based on the test results, parametric analysis of the connection was carried out. The results show that the volume of steel web has a great impact on the bearing capacity of the connection. The yield load and ultimate load of the connection increase with the increment of the steel web volume in an linearity relationship approximately.Keywords:hybrid coupled wall; steel coupling beam; quasi-static test; finite element analysis; bond-slip*國家自然科學(xué)基金資助項目(50878182),陜西省自然科學(xué)基金項目(SJ08E209)。作者簡介:宋安良,博士,Email:allsong1985@163.com。參考文獻[1]宋安良,蘇明周,王振山,等.新型混合聯(lián)肢墻節(jié)點恢復(fù)力模型試驗研究[J].建筑結(jié)構(gòu),2015,45(3):21-26.[2]白國良,秦福華.型鋼鋼筋混凝土原理與設(shè)計[M].上海:上??茖W(xué)技術(shù)出版社,2000.[3]潘建榮, 王湛, 張吉. 框架組合梁柱節(jié)點的非線性有限元分析[J]. 西安建筑科技大學(xué)學(xué)報:自然科學(xué)版, 2009, 21(5): 655-662.[4]JGJ 99—98高層民用建筑鋼結(jié)構(gòu)技術(shù)規(guī)程[S]. 北京: 中國建筑工業(yè)出版社, 1998.[5]劉義.型鋼混凝土異形柱框架節(jié)點抗震性能及設(shè)計方法研究[D].西安:西安建筑科技大學(xué),2009.[6]張勁, 王慶楊. ABAQUS混凝土損傷塑性模型參數(shù)驗證[J]. 建筑結(jié)構(gòu), 2008, 38 (8) : 127-130.[7]GB 50010—2010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, 2011.