岩溶顶板模拟试验研究

Study of Simulation Test of Roof in the Karst Area

摘要:

利用自制的桩基物理模型 ,对溶洞顶板进行了一组模拟试验 ,通过受力分析认为顶板尺寸在跨高比与宽度比不是很大时 ,可以把顶板简化为简支梁进行计算 ,但是需乘以一个适当的系数。同时对顶板进行了变形分析 ,给出了顶板的三维沉降等高图以及试件表面形变图。

Abstract:

Using the physical model of pile foundations developed by self, a series of simulation test were done. Through analyzing the condition of bearing capacity, it is thought that the roof can be predigested as a simple raise girder to calculate, but must multiply a proper coefficient, when the ratio of span height to breadth height is not too big. Through analyzing the settlement of roof, 3D settlement contour maps and surface displacement maps are drawn