884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

(廣西大學(xué)土木建筑工程學(xué)院，南寧 530004)

［摘要］為研究鋼骨混凝土T形截面柱節(jié)點(diǎn)的構(gòu)造措施及抗震性能，對(duì)6個(gè)鋼骨混凝土T形截面異形柱節(jié)點(diǎn)及2個(gè)混凝土T形截面異形柱節(jié)點(diǎn)進(jìn)行試驗(yàn)，考慮單、雙向荷載作用下節(jié)點(diǎn)低周反復(fù)荷載作用，測(cè)得了節(jié)點(diǎn)梁端荷載-位移曲線和骨架曲線以及各階段的荷載和位移值，并分析了節(jié)點(diǎn)的延性、耗能、抗剪性能、功比指數(shù)及破壞形態(tài)。試驗(yàn)研究表明，該節(jié)點(diǎn)形式具有很好的延性和能量耗散能力，證明配有鋼管和型鋼的鋼骨混凝土T形柱和鋼筋混凝土梁連接方法是可靠的，節(jié)點(diǎn)能夠有效傳遞彎矩和剪力。由于柱為鋼骨混凝土柱，節(jié)點(diǎn)核心區(qū)的抗剪承載力有了較大的提高。雙向荷載作用下試件的屈服荷載、極限荷載及破壞荷載相對(duì)單向情況下的均較小。

［關(guān)鍵詞］鋼骨混凝土柱;T形柱框架節(jié)點(diǎn);異形柱;破壞形態(tài);抗震性能

Experimental study on seismic behavior of SRC T-shaped column joints under low cyclic reversed loading

Deng Zhiheng, Tang Guangxian, Xiang Ping, Wan Yunfang, Su Yisheng, Zhang Xide(College of Civil and Architectural Engineering, Guangxi University, Nanning 530004, China)

Abstract:Based on test of 6 T-section joints of steel reinforced concrete special-shaped column and 2 joints of reinforced concrete special-shaped column under low-cyclic reversed loading, the joints filled steel reinforced concrete special-shaped column were studied for the anti-seismic behavior of the structure. Under single-direction and double-direction low-cyclic reversed loading，the load-displacement hysteretic curves, skeleton curves and the load-displacement values were tested. The ductility，hysteretic characteristics，shear property，proportion of function and failure form are analyzed. The experimental study indicates that the specimens had good ductility and good energy dissipation, which confirm the joints of T-shape column filled with steel and tube are reliable, the shear bearing capacity of core area of joints can be raised greatly. Under double-direction load，the results of yield，ultimate and failure load are less than those under single-direction load.

Keywords:SRC column; T-shaped column frame joint; special-shaped column; failure pattern; anti-seismic behavior

*廣西科技攻關(guān)項(xiàng)目(桂科攻0574007)。

通訊作者：唐光暹，博士，Email:tgxian@163.com。

參考文獻(xiàn)

［1］陳宗平，薛建陽(yáng)，趙鴻鐵，等.型鋼混凝土異形柱抗震性能試驗(yàn)研究［J］.建筑結(jié)構(gòu)學(xué)報(bào)，2007，28(3)：53-61.

［2］趙鴻鐵.鋼與混凝土組合結(jié)構(gòu)［M］. 北京：科學(xué)出版社，2001.

［3］NAKANISHI K，KITADA T，NAKAI H. Experimental study on ultimate strength and ductility of concrete filled steel columns under strong earthquake［J］. Journal of Constructional Steel Research，1999，51(3)：297-319.

［4］MIRZA S A. Monte Carlo simulation of dispersions in composite steel-concrete column strength interaction［J］.Engineering Sturcture，1998，20(1-2)：97-104.

［5］樊太，曹萬(wàn)林，張維斌.鋼骨混凝土異形柱正截面承載力及延性計(jì)算分析［J］.南寧：世界地震工程，2004，20(1).

［6］陳宗平.桁架式鋼骨的混凝土異形柱——不對(duì)稱(chēng)T形截面承載力的試驗(yàn)研究［D］.南寧：廣西大學(xué)，2004.

［7］萬(wàn)云芳.低周反復(fù)荷載作用下鋼骨混凝土T形柱節(jié)點(diǎn)抗震性能研究［D］.南寧：廣西大學(xué)，2006.

［8］向平.鋼骨混凝土異形柱鋼筋混凝土梁節(jié)點(diǎn)低周反復(fù)荷載試驗(yàn)研究［D］.南寧：廣西大學(xué)，2006.

［9］PARK R，PAULAY T. Reinforced concrete structures［M］.1974.