毛乌素沙漠地区砂层天然地基承载力试验研究

Experimental Study on Bearing Capacity of Natural Foundation of Sand Layer in Mu US Desert Area

以某项目煤储运系统原煤仓地基处理方案为例,采用多种勘探试验方法对场地砂层的地基承载力进行了深入的试验研究,针对煤仓荷载大、基础埋深大的特点,做了大量沉降、倾斜计算分析,充分论证了毛乌素沙漠地区粉细砂地层天然地基能满足大荷载建筑物变形要求。对沙漠地区砂层的物理力学特性有了突破性的认识,对深大荷载建(构)在该地区采用天然地基提供了充分的理论依据和实践经验,也为该地区粉细砂地层地基处理方法提出了新的思路。

Taking the foundation treatment scheme of raw coal bunker in coal storage and transportation system of a certain project as an example,the bearing capacity of the foundation of the site sand layer is deeply studied by using various exploration test methods,aiming at the characteristics of large coal bunker load and deep foundation,it is fully demonstrated that the natural foundation in the Mu Us Desert area can meet the deformation requirements of the building under heavy load.A breakthrough understanding of the physical and mechanical properties of sand layers in desert areas has been made,which provides a sufficient theoretical basis and practical experience for the construction of deep and large loads using natural foundations in this area,it also provides a new idea for the treatment of silty fine sand ground in this area.