卸荷土体性质的试验研究和工程应用

Experimental Study and Engineering Application of Properties of Soil in Unloading State

目前,对于土体的卸载,无论从试验方法上还是理论研究方面都是很不成熟的。但是,众所周知,卸载条件下的土体工程性质相比于加载会有很多不同,研究土体卸载的规律性对于工程应用很有必要。基于此,作者通过试验分析手段研究了卸载土体的抗剪强度、静止土压力系数、回弹模量等问题,并分别探讨了其工程应用价值。

It is not quite mature either in testing and experiments or in theoretical studies to understand the unloading properties of soil mass.However,as is well known,the engineering characters of soil in the unloading state changes a lot when compared with soil in the loading state.It is therefore quite important to study the unloading law of soil for the sake of engineering application.The author,by means of experiments and analyses,has studied the shear strength,earth pressure at rest and modulus of resilience,etc of soil in the unloading state and also the value of engineering application of such soil.