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(1 西南交通大學(xué)土木學(xué)院，成都 610031； 2 中鐵一院設(shè)計(jì)集團(tuán)城建分院，西安 710043)
［摘要］基于呼和浩特火車(chē)東站站房大跨度鋼結(jié)構(gòu)，針對(duì)頂部屋蓋80m跨度穹頂和下部屋蓋鋼結(jié)構(gòu)托換桁架的連接節(jié)點(diǎn)，依托ADINA分析平臺(tái)，采用引入微動(dòng)力阻尼系數(shù)的非線性Newton-Raphson方法進(jìn)行了節(jié)點(diǎn)數(shù)值仿真分析，分別研究了節(jié)點(diǎn)的彈塑性受力性能和變形特征，與1∶2節(jié)點(diǎn)模型試驗(yàn)結(jié)果進(jìn)行了比較，結(jié)果表明節(jié)點(diǎn)設(shè)計(jì)安全合理。
［關(guān)鍵詞］大跨度鋼結(jié)構(gòu)；托換桁架；非線性有限元；仿真分析；試驗(yàn)
Test study and numerical analysis on the connecting joint between the dome and underpinned truss in Hohhot East Railway Station
Yu Zhixiang1, Zhao Shichun1, Zhang Guihai2, Li Li1(1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China；2 Urban Construction Branch，China Railway First Survey and Design Institute, Xi’an 710043, China)
Abstract:The underpinned truss is used in the long span steel structure roof of Hohhot East Railway Station. A numerical simulation analysis of the joint was conducted so as to ensure the safety of the connecting joint between the dome and the steel structure at lower part of the roof. The nonlinear Newton-Raphson algorithm was used by introducing the Low-speed Dynamics Damping Factor based on the soft of ADINA in the analysis. The elastic-plastic mechanics properties of the joint, as well as the deformation characteristics were studied by comparing with a 1∶2 scale joint test. The comparison indicates that the design of the joint is safe and reasonable.
Keywords:long span steel structure； underpinned truss； nonlinear finite element； simulation analysis； test
作者簡(jiǎn)介：余志祥，博士，Email:yzxzrq@126.com。
參考文獻(xiàn)
［1］陳以一，陳揚(yáng)驥.鋼管結(jié)構(gòu)相貫節(jié)點(diǎn)的研究現(xiàn)狀［J］.建筑結(jié)構(gòu)，2002,32(7)：24-30.
［2］呼和浩特火車(chē)東站鋼結(jié)構(gòu)穹頂托換桁架連接節(jié)點(diǎn)試驗(yàn)報(bào)告［R］.成都：西南交通大學(xué)土木學(xué)院，2007.
［3］BATHE K J. Finite element procedures in engineering analysis［M］. New Jersey：PrenticeHall Inc，1982.
［4］BATHE K J. On the development of finite element methods and software［C］//Proceedings, Conference on Numerical Methods in Continuum Mechanics, Zilina, Slovakia, 2003.
［5］王元清, 曾文平, 賀東哲. 圓管與工字鋼混合空間管節(jié)點(diǎn)非線性承載分析［J］.清華大學(xué)學(xué)報(bào)：自然科學(xué)版，2002,42(S1)：101-104.
［6］劉建平，郭彥林.廣州新體育館大型鋼板節(jié)點(diǎn)極限承載力分析［J］.青海大學(xué)學(xué)報(bào)：自然科學(xué)版，2001,19(2)：11-13.