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方鋼管混凝土框架-兩邊連接薄鋼板剪力墻的抗震性能試驗(yàn)研究*
王先鐵,賈貴強(qiáng),楊航東,宋文俊
摘 要
(西安建筑科技大學(xué)土木工程學(xué)院, 西安 710055)
 
[摘要]對(duì)兩個(gè)1/3比例的方鋼管混凝土框架-薄鋼板剪力墻試件進(jìn)行了擬靜力試驗(yàn)研究。其中,試件SPSW-CB中鋼板剪力墻僅與框架梁連接,試件SPSW中鋼板剪力墻與框架梁柱均連接。結(jié)果表明:方鋼管混凝土框架-薄鋼板剪力墻具有較高的側(cè)向承載力、良好的耗能能力及延性,符合抗震設(shè)防理念,能夠達(dá)到雙重抗震設(shè)防目標(biāo)。兩邊連接的鋼板剪力墻顯著降低了結(jié)構(gòu)的側(cè)向承載力、剛度及耗能能力。在鋼板剪力墻自由邊設(shè)置加勁肋雖然可有效限制鋼板剪力墻平面外變形,但加勁肋強(qiáng)弱會(huì)顯著影響“拉力帶”的充分開(kāi)展,進(jìn)而影響結(jié)構(gòu)的抗震性能。加勁肋及其連接的可靠性是保證兩邊連接鋼板剪力墻優(yōu)異性能的必要條件。
[關(guān)鍵詞]方鋼管混凝土框架; 薄鋼板剪力墻; 抗震性能; 擬靜力試驗(yàn)
中圖分類號(hào):TU398.2      文獻(xiàn)標(biāo)識(shí)碼:A      文章編號(hào):1002-848X(2015)10-0010-07
 
Experimental study on seismic behavior of concrete-filled square steel tubular frame-thin steel plate shear walls connected with frame beams only
Wang Xiantie, Jia Guiqiang, Yang Hangdong, Song Wenjun
(School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China)
 
Abstract:The quasi-static tests on two 1/3 scale concrete-filled square steel tubular frame-thin steel plate shear walls specimens were conducted. The specimen SPSW is connected to both beams and columns of the frame, but the specimen SPSW-CB is connected to the frame beams only. The results show that concrete-filled square steel tubular frame-thin steel plate shear walls have high lateral-resisting capacity, excellent energy dissipating capacity and ductility, and agree with the concept of seismic prevention and achieve the aim of two-way seismic protection. Steel plate shear walls with both side-connections significantly reduce structural lateral-resisting capacity, stiffness and energy dissipating ability. Stiffeners installed on the free edges can effectively limit the out-of-plane deformation of steel plate shear walls, but the strength of stiffeners can significantly affect the full development of tension field, having compact on structural seismic behavior. The necessary requirement which secures the excellent properties of steel plate shear walls is that the vertical surrounding members and its connections do not fail.
Keywords:concrete-filled square steel tubular frame; thin steel plate shear wall; seismic behavior; quasi-static test
*國(guó)家自然科學(xué)基金項(xiàng)目(51108369),陜西省科技新星科研項(xiàng)目(2013KJXX-54),住房與城鄉(xiāng)建設(shè)部科學(xué)技術(shù)項(xiàng)目(2014-K2-007)。
作者簡(jiǎn)介:王先鐵,博士,教授,Email:wangxiantie@163.com。
 
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