Poulos-Davis-Randolph (PDR) Method is a empirical calculation method. It is easy to compute the relation between the number of piles and the average settlement of the foundation.
PDR法是计算沉降控制复合桩基的一种经验方法，它在一定程度上考虑了桩的非线性和桩—土—筏的共同作用。
The collapsibility farmland is easy to change, which make the make building appear substantial settlement, fracture and tilt.
湿陷性黄土地基易变形，会使建筑物大幅度沉降、折裂及倾斜。
Dacromet coating solutions prepared with mixed metal powders are easy to be dispersed with short-time agitation and have good anti-settlement and covering force.
混合处理后的粉末配制的达克罗涂液易分散，搅拌时间短、抗降沉性好、遮盖力强。
The calculation procedure is simple, and the concept of calculation parameter is clear and easy to master. By the procedure it is convenient to calculate the settlement and verify the design.
该计算方法简单，计算参数的概念明确且易于掌握，可方便地计算桩的沉降是否满足设计要求。
The most permafrost from Shiquan river to Ritu is seasonal frozen soil. It is easy threatened by permafrost such as frost swelling, salivary ices, thaw settlement.
在狮泉河至日土段沿线冻土主要是季节性冻土，容易发生路面翻浆、涎流冰、路基融沉等冻土病害。
The most permafrost from Shiquan river to Ritu is seasonal frozen soil. It is easy threatened by permafrost such as frost swelling, salivary ices, thaw settlement.
在狮泉河至日土段沿线冻土主要是季节性冻土，容易发生路面翻浆、涎流冰、路基融沉等冻土病害。
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