圆形水池底板与池壁的相互作用  

Interaction between base plate and thick wall of circular water tank

作　　者：夏桂云[1,2] 李传习[2] 张建仁[2] 

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]长沙理工大学土木与建筑学院,湖南长沙410004

出　　处：《中南大学学报（自然科学版）》2013年第1期345-350,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51278072);中国博士后科学基金资助项目(2012M521555);湖南省科技计划资助项目(2012FJ4125)

摘　　要：考虑圆形水池池壁剪切变形的影响,基于底板对池壁的径向约束作用和弯曲约束作用,将圆形水池底板与池壁的相互作用简化成端部受切向弹性约束和转动弹性约束下的弹性地基Timoshenko梁。利用自编程序和Ansys对底板环形简支的圆形水池在均布荷载作用下的受力进行分析,比较考虑以及不考虑池壁剪切变形影响、底板与池壁相互作用共4种工况的受力状态。研究结果表明:圆形水池底板与池壁的相互作用明显,对内力和变形影响巨大,池壁剪切变形影响较小。Considering the shear deformation effect of the thick wall for circular water tank, and the interactions of radial constraint and bending constraint between the base plate and the thick wall, the interacting model was imitated as elastic foundation Timoshenko beam supported by elastically tangential constraint and rotating constrain at the end. The self-complied program and Ansys were used to analyze the circular water tank with base plate simply loop-supported under the even distributing load. Four states of considering and not considering the shear deformation effect of the thick wall and the interaction between the base plate and the thick wall were presented. The change of the shear forces and moments of the thick wall were calculated with the bending constraint stiffness. The results show that the interaction between the base plate and the thick wall is enormous enough to affect the internal forces and the deformations, and the shear deformation effect of the thick wall is relatively small.

关 键 词：圆形水池 剪切变形 弹性地基梁 有限元方法 径向约束刚度 弯曲约束刚度 

分 类 号：TU991[建筑科学—市政工程]