扩孔理论 meaning in English

cavity expansion theory

According to the theory , the method of using half - rigid pile reinforce the embankment below the corbel of the approach slab which form a composite foundation and realize rigidity gradation , is put forward in this paper and the formula to calculate pile - soil stress ratio in light of visic curvity expansive theory is also deduced here which can be used in design
应用这一理论，本文提出了采用半刚性挤密桩复合地基加固桥头搭板枕梁下路堤实现，路、桥的刚柔过渡方法。针对低强度半刚性挤密桩计算理论的现状，本文应用魏西克( visic )扩孔理论推导了计算桩土应力比的理论公式，可供设计阶段采用。