Ultimate bearing capacity of foam lightweight soil under local vertical loading conditions
In order to reveal the load-bearing characteristics and damage features of foam lightweight soil,this paper carried out the load-bearing test of foam lightweight soil under local loading conditions.The load-displacement curve and damage mode of foam lightweight soil are obtained from the test considering the changes of parameters such as wet density,age and loading position of foam lightweight soil.The results show that when subjected to vertical local load,the foam lightweight soil showed a"bending and sinking basin"type deformation law similar to that of foundations.When the location of the loading point is different,the bearing capacity and damage mode of the specimen will change significantly,showing local shear damage or straight shear damage.Based on the analysis of the test results,this paper constructed a formula for calculating the ultimate bearing capacity of foam lightweight soil based on the theoretical formula of Terzaghi foundation bearing capacity.
万方数据
维普
