古建筑平移托换结构受力性能分析
- 摘 要
-
（1 天津大学建筑工程学院， 天津 300072； 2 天津大学滨海土木工程结构与安全教育部重点实验室， 天津 300072； 3 河北省建筑科学研究院， 石家庄 050021）
［摘要］托换结构是建筑物平移过程中的重要结构，关系到平移过程中上部结构的安全。采用ANSYS软件建立平移工程中托换结构的有限元模型，计算分析了托换结构中各构件的变形和应力。结果表明，托换结构中预应力托换梁和非预应力托换梁的最大挠度均满足相关规范要求，托换梁混凝土不会出现开裂或压碎。托换结构的安全性分析结果表明，托换结构具有足够的安全储备。建立不同托换梁梁高的托换结构模型，计算分析得到托换结构的允许荷载，为结构托换梁梁高设计提出了建议。［关键词］古建筑; 整体平移; 托换结构; 安全系数中图分类号：TU378.8 文献标识码：A 文章编号：1002-848X(2015)16-0107-05
Mechanical analysis on the underpinning structure in the movement of ancient buildingZhao Hailong1,2, Wang Tiecheng1,2, Ren Wen1, Shang Dongfan1,3
(1 School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 Key Laboratory of Coast Civil Structure Safety, Ministry of Education, Tianjin University, Tianjin 300072, China; 3 Hebei Academy of Building Research, Shijiazhuang 050021, China)Abstract: The underpinning structure is an important structure during the building movement, because it is related to the safety of the upper building. The finite element model of the underpinning structure in the building movement was built by ANSYS software, and the deformation and stress of the components in the underpinning structure were calculated and analyzed. Results show that the maximum deflection of the prestressing and non-prestressing underpinning beams satisfies the requirements of related codes, and no cracking or crushing occurrs on the concrete of the underpinning beams. The safety analysis result of the underpinning structure shows that it has enough safety margin. The models of the underpinning structure with different beam heights were built and calculated. The allowable load of the underpinning structure with different beam heights was obtained by analysis. Suggestions for design of the underpinning beam height were proposed.Keywords: ancient building; monolithic movement; underpinning structure; safety coefficient
作者简介：赵海龙，博士，讲师，Email：zhaohailong@tju.edu.cn。
