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（北京市建筑設(shè)計(jì)研究院，北京 100045）

［摘要］進(jìn)行了2組1∶4縮尺空間桁架相交節(jié)點(diǎn)的靜力單調(diào)加載試驗(yàn)，分析了節(jié)點(diǎn)在靜力加載全過(guò)程中的應(yīng)變與轉(zhuǎn)角變化特點(diǎn)，揭示節(jié)點(diǎn)的破壞模式，并補(bǔ)充進(jìn)行了全過(guò)程數(shù)值模擬分析。試驗(yàn)最終呈焊縫連接破壞，結(jié)合試驗(yàn)結(jié)果對(duì)此類節(jié)點(diǎn)的設(shè)計(jì)提出一些建議和構(gòu)造措施，為結(jié)構(gòu)設(shè)計(jì)提供了依據(jù)。

［關(guān)鍵詞］空間桁架；節(jié)點(diǎn)；試驗(yàn)研究；有限元

Experimental study on intersection of large-span space truss nodes

Zhao Nan, Li Ting(Beijing Institute of Architectural Design, Beijing 100045, China)

Abstract:Two groups of experiment of 1∶4 scaled space truss intersection joints under monotonous static loading has been performed.The characteristics of change in the strain and rotation during the whole process were analyzed, and  the failure mode was revealed. Numerical simulation analysis has also been included. Weld connecting was damaged. A few suggestions on such joint issues were put forward as the basis for further structure design.

Keywords:space truss; steel structure; joint; experimental study; finite element

作者簡(jiǎn)介：趙楠，碩士，工程師，Email：Biad1s1@126.com。

參考文獻(xiàn)

［1］王嫻明 建筑結(jié)構(gòu)試驗(yàn)［M］. 北京：清華大學(xué)出版社，1988.

［2］姚振綱，劉祖華. 建筑結(jié)構(gòu)試驗(yàn)［M］. 上海：同濟(jì)大學(xué)出版社，1996.

［3］李啟才,何若全,顧強(qiáng),等. 交錯(cuò)桁架體系中桁架與柱的連接節(jié)點(diǎn)設(shè)計(jì)方法研究［J］. 建筑鋼結(jié)構(gòu)進(jìn)展,2008，(8).