Experimental Study Of Ultimate Bearing Capacity And Reinforcement Of Rammed Earth Walls

There have been frequent snow disasters and frozen rain in recent years, which caused serious threaten to structural safety of houses in rural area of South China. This article studied rammed earth structures in rural areas. Specifically include:the characteristics of rammed earth material, the ultimate bearing capacity of rammed earth wall and the reinforcement measures. Firstly, Drucker-Prager yield criterion was introduced which could be used as the yield criterion for analysis of rammed earth material. ABAQUS, which is a finite element software widely used in mechanical analysis, revised the Drucker-Prager yield model and also raised the method for parameters conversion based on uniaxial compression test. Then model test was performed to investigate the ultimate bearing capacity of rammed earth walls using different reinforcement measures. At the same time uniaxial compression test for rammed earth and mortar blocks were conducted to obtain the basic mechanical parameters and constitutive relations. Finally, the finite element analysis software ABAQUS was applied to analyze the ultimate bearing capacity of rammed earth wall models utilizing the Drucker-Prager yield criterion. Conclusion can be drawn by comparing the effect of different reinforcement and the comparison of numerical simulation as well as model test results, which is of relevant engineering significance in practical application.