矩形水池底板基床系数的探讨

Discussion on Coefficient of Foundation Bed of Rectangular Pool Bottom Plate

通过规范中的基床系数原位测试试验方法结合理论计算,得出不同岩土的合理基床系数。基于文克尔假定,将该基床系数用于矩形水池有限元计算,在底板设置竖向弹簧的基础上,同时在底板设置水平弹簧替代四角平面约束或四角不动铰支座,通过分析比较后,此边界条件贴合实际,水池结构内力计算结果合理,水池底板变形与实际相似。

Based on the in-situ test method of subgrade coefficient in the code and theoretical calculation,the reasonable subgrade coefficient of different rock and soil was obtained.Based on Winkler's assumption,the coefficient of subgrade reaction was used in the finite element calculation of rectangular pool.On the basis of setting vertical spring in the bottom plate,horizontal spring was set in the bottom plate to replace the four corner plane constraint or four corner fixed hinge bearing.Through analysis and comparison,the boundary condition fitted the reality,the calculation result of internal force of pool structure was reasonable,and the deformation of pool bottom plate was similar to the reality.