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

您現(xiàn)在的位置:建筑結(jié)構>> 期 刊>> 2014年>> 第18期>>正文內(nèi)容
屈曲約束支撐抗震性能試驗研究*
李國強1,2,孫飛飛1,2,鄧仲良3,郭小康2,金華建2
摘 要

1 同濟大學土木工程防災國家重點實驗室,上海 200092;2 同濟大學土木工程學院建筑工程系,上海 200092;3 中國建筑設計研究院,北京 100044

[摘要]依據(jù)不同設計準則分別采用國產(chǎn)熱軋Q235B,BLY225兩種鋼材設計了三種截面形式的TJ型屈曲約束支撐構件。通過低周往復加載試驗,研究了該類構件的滯回曲線、骨架曲線、累計塑性應變、附加等效阻尼比以及支撐核心區(qū)相對長度對其抗震性能的影響。試驗結(jié)果表明,該類型屈曲約束支撐滯回曲線飽滿,具有穩(wěn)定的受力特性和優(yōu)良的延性及低周疲勞性能。根據(jù)試驗構件的滯回曲線提出了基于Bouc-Wen模型的修正滯回模型,該模型的擬合滯回曲線與試驗結(jié)果吻合較好。

[關鍵詞]屈曲約束支撐; 低周往復荷載; 屈服荷載; 累計塑性應變; 相對塑性區(qū)長度; 拉壓不對稱

中圖分類號:TU352.1      文獻標識碼:A       文章編號:1002-848X(2014)18-0071-08

Experimental study on the aseismic performance of buckling-restrained braces

Li Guoqiang1,2, Sun Feifei1,2, Deng Zhongliang3, Guo Xiaokang2, Jin Huajian2

 (1 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; 2 Building Department, College of Civil Engineering, Tongji University, Shanghai 200092, China; 3 China Architectural Design & Research Group, Beijing 100044, China)

Abstract: Based on diverse design principles, three different sections of TJ type buckling-restrained braces(TJ-BRB) were designed with domestic hot-rolled Q235B and BLY225 steel materials. Through low-cyclic loading experiments, the influences of respective hysteresis curves, skeleton curves, the cumulating plastic strain, additional equivalent damping ratio and relative length of the brace core on its anti-seismic property were studied. The experimental analysis showes that TJ-BRB has steady mechanical property, excellent ductility and low-cyclic fatigue property with considerable full hysteresis curves. Furthermore, according to hysteresis curves of experiment member, modified hysteresis model based on Bouc-Wen model was proposed, which matched well with the experimental results.

Keywords: buckling-restrained brace; low-cyclic loading; yielding load; cumulating plastic strain; relative length of the plastic core; asymmetrical property of tension and compression

*國家科技支撐計劃資助(2012BAJ13B02)。

作者簡介:李國強,教授,博士生導師,Email: gqli@#edu.cn。

參考文獻

1]汪家銘,中島正愛,陸燁. 屈曲約束支撐體系的應用與研究進展(Ⅰ)[J. 建筑鋼結(jié)構進展, 2005, 7(1)1-12.

2]郭彥林,劉建彬,蔡益燕,等. 結(jié)構的耗能減震與防屈曲支撐[J. 建筑結(jié)構,2005, 35(8):18-23.

3]趙俊賢,吳斌,歐進萍. 新型全鋼防屈曲支撐的擬靜力滯回性能試驗[J. 土木工程學報,2011,44(4):60-70.

4]鄧雪松, 鄒征敏, 周云, . 開槽式三重鋼管防屈曲耗能支撐試驗研究[J. 土木工程學報, 2011, 44(7): 37-45.

5]羅開海,孔祥雄,程紹革. 一種新型屈曲約束支撐的研制與試驗研究[J. 建筑結(jié)構,2010,40(10): 1-6.

6CAMERON J BLACK, NICOS MAKRIS, IAN D AIKEN. Component testing seismic evaluation and characterization of buckling-restrained bracesJ. Journal of Structural Engineering, 2004, 130(6):880-894.

7]李國強,孫飛飛,陳素文,. 大噸位國產(chǎn)TJⅡ型屈曲約束支撐的研制與試驗研究[J. 建筑鋼結(jié)構進展,2009, 11(4):22-26.

8]羅開海,程紹革,白雪霜,. 屈曲約束耗能支撐力學性能分析[J. 工程抗震與加固改造,2007,29(2): 23-32.

9]汪大綏,陳建興,包聯(lián)進,等. 耗能減震支撐體系研究及其在世博中心工程中的應用[J. 建筑結(jié)構學報, 2010, 31(5):117-123.

10]孫飛飛,張葳,李立樹. 框架-防屈曲開縫鋼板墻體系設計方法的比較研究[J. 建筑鋼結(jié)構進展,2012,145):44-52.

11]李國強,胡寶琳,孫飛飛. TJ-Ⅰ型屈曲約束支撐研制與試驗研究[C//第十一屆高層建筑抗震技術交流會論文集. 昆明, 2007.

12GB 500112010 建筑抗震設計規(guī)范[S. 北京:中國建筑工業(yè)出版社,2010.

13]上海市金屬結(jié)構協(xié)會,同濟大學多高層鋼結(jié)構與鋼結(jié)構抗火研究室.TJ型屈曲約束支撐設計手冊[M.2009.

14ANSI/AISC 341-05 Seismic provisions for structural steel buildingsS. AISC, 1997.

15BOUC R. Forced vibration of mechanical systems with hysteresisC//The 4th International Conference on Nonlinear Oscillation. Prague,1967:315-320.

16WEN Y K. Method of random vibration of hysteretic systemsJ.Journal of Engineering mechanics,1976102:249-63.

17]李國強, 胡寶琳. 屈曲約束支撐曲線滯回模型和剛度方程的建立[J. 地震工程與工程振動, 2007, 27 (2): 26-31.

下載地址

    你還沒注冊?或者沒有登錄?這篇論文要求至少是本站的注冊會員才能閱讀!

    如果你還沒注冊,請趕緊點此注冊吧!

    如果你已經(jīng)注冊但還沒登錄,請趕緊點此登錄吧!