1 河海大学土木工程学院，南京 210098； 2 上海天演建筑物移位工程有限公司，上海 200336)
［摘要］结合中国记者协会办公楼平移工程，将平移动力作用点设为铰支座，摩擦反力作为节点荷载，建立了平面有限元模型，分别进行了水平托换框架结构在斜向平移、水平旋转平移过程的模拟分析，计算出其内力和顶推动力。结果表明，斜向平移时托架的弯矩、剪力和轴力均较小，但千斤顶故障工况下内力明显增大；有限元方法与简化求和法计算的轨道上水平动力有明显差别；水平旋转平移时托架内力远远大于斜向平移。建议复合线路平移工程中托架设计以水平旋转为控制工况，增大托架设计的安全系数，避免动力设备产生故障。
［关键词］斜向平移；旋转平移；托架；力学分析
Mechanics analysis on the underpinning frame in oblique direction and rotation horizontal movement engineering
Wu Erjun1, Gu Wenhu1, Xie Xianfeng1, Lan Wuji2, Wang Chang′an2(1 College of Civil Engineering, Hohai University, Nanjing 210098, China;2 Shanghai Tianyan Building Translation Ltd., Shanghai 200336, China)
Abstract:Using the translation of the office building of Chinese Journalists Association as an example, the 2-D finite element model was built. The motive force effect points were simplified to hinge supports, and the friction force was taken as concentrated load. Mechanics analysis of underpinning frame in oblique moving and rotating conditions was respectively carried out, and the internal forces and motive forces were calculated. The results show that the flexural moment, shear force and axial force of underpinning frame are very low in diagnal moving, but they become higher if any jack in trouble. Horizontal motive forces calculated by the finite element method are significant different with the results by the summation method. The internal forces in rotating are far greater than those in the oblique translation. So some advices are provided  including that must take the results in rotating condition as control internal forces,  use the higher safety factor in design, and avoid power equipment failure in construction.
Keywords:oblique horizontal movement; horizontal rotating movement; underpinning frame; mechanics analysis
“十一五”国家科技支撑计划重大项目(2006BAJ03A00)。
作者简介：吴二军，博士，副教授，一级注册结构工程师，Email:wej@hhu.edu.cn。
参考文献
［1］吴二军，李爱群.建筑物水平旋转迁移技术及其工程应用［J］.建筑技术，2008(8)：714-717.
［2］陈瑜, 徐福泉. 多层组合结构建筑的整体平移旋转技术［J］. 建筑结构, 2001,31(12):15-16.
［3］郑华奇，蓝戊己.刘长胜故居整体平移工程的设计与施工［J］.建筑技术，2003，34(6)：414-416.
［4］李爱群，吴二军，高仁华.建筑物整体迁移技术［M］.北京：中国建筑工业出版社，2006.
［5］DGJ32/J57—2007建(构)筑物整体迁移技术规范［S］.
［6］GB50009—2001建筑结构荷载规范［S］.北京：中国建筑工业出版社，2001.
［7］上海天演建筑物移位工程有限公司.北京记者协会办公楼整体平移技术方案［R］.2008.
［8］吴二军，郭彤，李爱群. 滚轴滚动摩擦系数研究与建筑物迁移工程水平动力计算［J］. 土木工程学报，2006，39(6):57-60.