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鋼筋混凝土梁-圓鋼管混凝土柱環(huán)梁節(jié)點抗彎設(shè)計研究
葛森,聶肅非,宋宏遠(yuǎn)
摘 要

 

(華中科技大學(xué)土木工程與力學(xué)學(xué)院, 武漢 430074

摘要]運(yùn)用ANSYS軟件建立了鋼筋混凝土梁-圓鋼管混凝土柱環(huán)梁節(jié)點有限元模型,分析了環(huán)梁鋼筋與混凝土的應(yīng)力分布規(guī)律,通過簡化環(huán)梁受壓區(qū)混凝土受壓應(yīng)力分布,推導(dǎo)了節(jié)點抗彎承載力設(shè)計公式,為環(huán)梁節(jié)點的設(shè)計提供了新的方法和思路。主要結(jié)論有:環(huán)梁最大扭矩截面和環(huán)筋最大受力截面均在框架梁側(cè)位置;彎矩作用下環(huán)梁扭矩的大小受框架梁寬度和鋼管半徑之比的影響,比值越大,扭矩越小。

關(guān)鍵詞]環(huán)梁節(jié)點; 有限元分析; 應(yīng)力分布; 抗彎承載力

中圖分類號:TU375.1,TU375.3      文獻(xiàn)標(biāo)識碼:A      文章編號:1002-848X(2014)12-0091-04

Bending design research of ring beam joint with RC beam and circular concrete-filled steel tubular column

Ge Sen, Nie Sufei, Song Hongyuan

College of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China

Abstract: Software ANSYS was used to build the finite element models of ring beam joint with RC beam and circular concrete-filled steel tubular column. The stress distribution laws of the reinforcement and concrete of the ring beam were studied. By simplifying stress distribution in the compression zone of ring beam, bending capacity design formulas were derived, providing a new method for the design of the ring beam joint. The main conclusions are as follows. The maximum torque cross-section of ring beam and maximum force cross-section of ring rebar are all located at the side position of the frame beam. The torsion value of ring beam under bending moment is in inverse proportion with the ratio of frame beam width and tube radius.

Keywords: ring beam joint; finite element analysis; stress distribution; bending capacity

作者簡介:葛森,碩士研究生,Emailgesen_7@163.com。

參考文獻(xiàn)

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2]宋欣.鋼管混凝土柱環(huán)梁節(jié)點設(shè)計方法研究[D].廣州:華南理工大學(xué),2000.

3]方小丹,黃圣鈞,李少云,等.RC梁圓鋼管混凝土柱節(jié)點環(huán)梁承載力設(shè)計方法[J].建筑結(jié)構(gòu)學(xué)報,2008,295):20-33.

4]魏璉,王志遠(yuǎn),王森,等.鋼管混凝土柱-RC環(huán)梁節(jié)點計算方法的研究[J].建筑結(jié)構(gòu),2008,383):29-33.

5]韋宏,陳添明,劉慶輝.鋼筋混凝土梁-方鋼管混凝土柱環(huán)梁節(jié)點靜力試驗研究及設(shè)計方法[J].建筑結(jié)構(gòu)學(xué)報,2013,341):76-84.

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