帶填充墻的防屈曲支撐鋼框架結(jié)構(gòu)抗震性能分析*
楊奕1，馬寧1，李蘆鈺1，歐進萍1, 2
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（1 大連理工大學(xué)建設(shè)工程學(xué)部，大連116026；2 哈爾濱工業(yè)大學(xué)土木工程學(xué)院，哈爾濱150090）[摘要] 為了探究填充墻以及防屈曲支撐的不同布置方式對結(jié)構(gòu)抗震性能的影響，設(shè)計了10個4層6跨的防屈曲支撐鋼框架平面模型，其中支撐采用了四種不同的布置方式，并按照考慮填充墻與否將模型分為兩組。防屈曲支撐根據(jù)等剛度比的方法進行設(shè)計，填充墻用三撐桿模型模擬。利用SAP2000對各模型進行了基于8度設(shè)防標準的動力時程分析。結(jié)果表明，填充墻可以提高原結(jié)構(gòu)的抗震性能，減小結(jié)構(gòu)在地震（尤其是近場地震）作用下的位移反應(yīng)；地震作用下，支撐的布置方式對框架柱中的軸力會產(chǎn)生不同的影響；考慮填充墻后，柱的軸力方向有時會發(fā)生變化，故在設(shè)計時應(yīng)充分考慮填充墻對柱軸力的影響，以確保柱腳螺栓連接的有效性；防屈曲支撐的加入不會對框架柱的穩(wěn)定造成不利影響。[關(guān)鍵詞] 填充墻；防屈曲支撐；時程分析中圖分類號：TU352.1 文獻標識碼：A 文章編號：1002-848X（2013）S1-1213-05Seismic analysis on buckling-restrained braced steel frames infilled with masonry wallsYang Yi1, Ma Ning1, Li Luyu1, Ou Jinping1, 2(1 Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116026, China; 2 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China)Abstract: To explore the influence of masonry walls and arrangements of buckling-restrained braces (BRB) on the structure’s seismic performance, ten 4-story 6-bay buckling-restrained braced frame (BRBF) models with 4 different arrangements of BRBs are designed. The models are divided into two groups depending on whether masonry walls are considered. BRBs are designed so that the stiffness ratios of BRBs and frame stay the same. Masonry walls are modeled using the three-strut modeling method. According to seismic fortification intensity of 8, time-history analysis is carried out in SAP2000. The results show that masonry walls improve the structure’s seismic performances and reduce the displacement of structures under earthquakes (especially the near-field ones); the arrangements of BRBs affects column axial forces differently; once masonry walls are considered, the column axial forces may change their direction, so masonry walls should be taken into consideration thoroughly in order to guarantee the effectiveness of column bolt connection; BRBs will not adversely affect the stability of frame columns.Keywords: masonry walls; buckling-restrained braces; time-history analysis*國家自然科學(xué)基金（51108063），國家科技支撐計劃項目（2011BAK02B02），地震行業(yè)專項課題（201108006）。作者簡介：楊奕，碩士研究生，Email: huoqilin8197@163.com。
