溫度荷載作用下磁浮迭合梁變形分析
鄧亞士，馬順康，陳天鵬
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鄧亞士，馬順康，陳天鵬（交通運輸部公路科學研究院，北京交科公路勘察設(shè)計研究院有限公司， 北京 100191）[摘要] 磁浮軌道結(jié)構(gòu)在溫度荷載作用下產(chǎn)生的變形對正常使用的影響很大，在一定程度上可能會超過其他荷載的影響而成為設(shè)計的控制因素。對主跨80m的三跨連續(xù)磁浮迭合梁進行了方案設(shè)計，并建立有限元分析模型，對溫度荷載作用下的迭合梁結(jié)構(gòu)變形情況進行了詳細分析，探明了迭合梁變形特征及變形控制關(guān)鍵點。[關(guān)鍵詞] 高速磁?。卉壍懒?；變形；有限元中圖分類號：TU212-3，TU238 文獻標識碼：A 文章編號：1002-848X(2012)12-0094-04Analysis on the deformation of composite guideway under the influence of ambient temperatureDeng Yashi, Ma Shunkang, Chen Tianpeng（Research Institute of Highway Ministry of Transport, RIOH Transport Consultants Co., Ltd., Beijing 100191, China）Abstract: Maglev track structure will deform under ambient temperature, which has a great impact on the normal use and may exceed the other load to a certain extent and becomes the control factors in the design. The scheme was designed for the three-span continuous composite guideway bridges with an 80m main span, and then the finite element analysis model was established. The deformation of composite guideway under the influence of ambient temperature was analyzed, and deformation characteristics and key control points were ascertained.Keywords: high-speed maglev transport; guideway; deformation; finite element作者簡介：鄧亞士，博士，高級工程師，Email：dengyashi@163.com參考文獻［1］吳祥明. 關(guān)于建立我國高速磁浮交通網(wǎng)絡(luò)和磁浮工業(yè)體系的思考［J］. 土木工程學報,2003,36(3), 64\|69.［2］DENG YASHI, WEI QINGCHAO. Application of curve fitting techniques in guideway design of high-speed maglev transport system ［C］//International Conference on Transportation Engineering 2007. America: ASCE,2007：290-295.［3］曹仲明, 周華, 邊曉春. 上海磁浮示范運營線的直線擬合技術(shù)［J］. 城市軌道交通研究, 2007(4):26-29.［4］鄧亞士. 高速磁浮交通迭合式軌道梁變形及力學特性研究［D］. 北京: 北京交通大學,2009.［5］TB 10002-3-2005 鐵路橋涵鋼筋混凝土和預應力混凝土結(jié)構(gòu)設(shè)計規(guī)范［S］. 北京:中國鐵道出版社,2005.［6］劉興法. 預應力混凝土箱梁溫度應力計算方法［J］.土木工程學報,1986,19(1):31-42.
