- 摘 要
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（1 河北工業(yè)大學(xué)土木與交通學(xué)院， 天津 300130； 2 河北省土木工程技術(shù)研究中心， 天津 300401；3 河北工業(yè)大學(xué)建筑與藝術(shù)設(shè)計學(xué)院， 天津 300130）
［摘要］為研究屈曲約束支撐鋼筋混凝土框架結(jié)構(gòu)的抗震性能，對安裝和不安裝屈曲約束支撐的兩榀三層兩跨的鋼筋混凝土框架進行擬靜力試驗研究，對比有控框架與無控框架的試驗結(jié)果。結(jié)果表明，安裝屈曲約束支撐后，鋼筋混凝土框架結(jié)構(gòu)的屈服荷載提高了約1倍，極限承載力提高了約0-75倍，初始剛度和耗能能力提高了近2-5倍，框架滯回曲線更飽滿，有更好的抗側(cè)移能力，有效控制了節(jié)點區(qū)域的裂縫發(fā)展。由此可見，鋼筋混凝土框架結(jié)構(gòu)的承載能力、變形能力、耗能能力、剛度及破壞形態(tài)等各項抗震性能均得到顯著提升。為使屈曲約束支撐更好地發(fā)揮其性能，應(yīng)保證其與框架連接部分的可靠性，避免平面外失穩(wěn)。
［關(guān)鍵詞］鋼筋混凝土框架； 屈曲約束支撐； 抗震性能； 試驗研究
中圖分類號：TU375， TU352文獻標(biāo)識碼：A文章編號：1002-848X(2017)08-0029-04
Experimental study on seismic performance of RC frame structure with buckling restrained brace
Qiao Jinli1,2， Hou Shuang1， Ren Zemin3， Wang Xiaowei1， Ma Yanan1， Ding Dong1， Kong Lingchuan1
(1 School of Civil and Transportation, Hebei University of Technology, Tianjin 300130, China；
2 Civil Engineering Technology Research Center of Hebei Province, Tianjin 300401, China;
3 School of Architecture and Art, Hebei University of Technology, Tianjin 300130, China)
Abstract:To study the seismic performance of RC frame structure with buckling restrained brace, quasi-static experimental study was conducted on two pieces of three-layer and two-span RC frame with and without buckling restrained brace respectively, and the experimental results were compared. Results show that after the installation of buckling restrained brace, yielding load of the RC frame structure is increased by about 1 times, ultimate bearing capacity is increased by about 0-75 times, and initial stiffness and energy dissipation capacity are increased by nearly 2-5 times. The frame hysteretic curve is fuller to indicate better lateral resistance ability and crack development in joint region is effectively controlled. It shows that the all seismic performance indicators of the RC frame structure including bearing capacity, deformation capacity, energy dissipation capacity, stiffness and failure mode are significantly improved. In order to improve the performance of the buckling restrained brace, it is necessary to ensure the reliability of its connection part with the frame to avoid the out-of-plane instability.
Keywords:RC frame; buckling restrained brace; seismic performance; experimental study
*河北省高等學(xué)?？茖W(xué)技術(shù)研究項目（QN2014119）。
作者簡介：喬金麗，博士，副教授，碩士生導(dǎo)師，Email:qiaojinli@126.com。
