武当山遇真宫山门无降点同步顶升设计研究*
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（1天津大学建筑工程学院， 天津 300072； 2 河北省建筑科学研究院， 石家庄 050021；3 河北建研科技有限公司， 石家庄 050021）［摘要］顶升工程大多需要千斤顶多次循环顶升才能达到指定高度，而循环顶升过程中代替千斤顶的临时支顶构件往往无法绝对顶紧上部结构，在千斤顶回油卸载时结构会产生一定的回降，这种回降会对结构产生一定的不利影响，而无降点顶升可以很好地解决这个问题。从连续性倒塌机理入手，结合武当山遇真宫山门无降点同步顶升的实例，展开分析无降点顶升原理及优缺点，得出无降点顶升时顶升点的合理布置方案。［关键词］顶升; 无降点顶升; 连续性倒塌; 仿真分析中图分类号：TU318+.2 文献标识码：A 文章编号：1002-848X(2013)24-0089-04Synchronously lift-up design without drop points for the gate of Yuzhen Palace in Wudang MountainBian Zhihui1,2, Wang Tiecheng1, Fu Sujuan2, Yan Panke3（1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Heibei Academy of Building Research, Shijiazhuang 050021, China; 3 Hebei Jianyan Technology Co., Ltd., Shijiazhuang 050021, China）Abstract: In lift-up projects, the jack need to operate multiple cycle jacking to achieve specified height. In the process of the cycle jacking, the structure often suffers a certain amount of drop back when it unloads because the temporary support that acts as jack fails to press the upper structure tightly during the lift-up. The drop back may adversely affect the structure and could be avoided by lift-up technology without drop points. According to the mechanism of progressive collapse and the application case of synchronously lift-up without drop points for the gate of Yuzhen Palace in Wudang Mountain, the principle, advantages and disadvantages of lift-up technology without drop points were analyzed. Finally, reasonable layout of the jack was concluded when lift-up technology without drop points was applied.Keywords: lift-up; lift-up without drop point; progressive collapse; simulation analysis*河北省科技支撑计划项目（12215801D）。作者简介：边智慧，教授级高级工程师，博士研究生，Email：13903217322@126.com。参考文献［1］胡晓斌,钱稼茹.单层平面钢框架连续倒塌动力效应分析［J］. 工程力学, 2008,25(6):38-43.［2］陆新征,林旭川,叶列平,等.地震下高层建筑连续倒塌数值模型研究［J］. 工程力学, 2010,27(11):64-70.［3］梁益,陆新征,李易,等. 3 层RC 框架的抗连续倒塌设计［J］. 解放军理工大学学报：自然科学版,2007,8(6):559-664.［4］赵新源,林峰,郭祥林,等.局部爆炸作用下混凝土框架结构抗连续倒塌设计［J］.结构工程师,2009,25(6):12-18.
