Determination of distribution and magnitude of active earth pressure is crucial in retaining wall designs.A number of analytical theories on active earth pressure were presented.Yet,there are limited studies on compar...Determination of distribution and magnitude of active earth pressure is crucial in retaining wall designs.A number of analytical theories on active earth pressure were presented.Yet,there are limited studies on comparison between the theories.In this work,comparison between the theories with finite element analysis is done using the PLAXIS software.The comparative results show that in terms of distribution and magnitude of active earth pressure,RANKINE's theory possesses the highest match to the PLAXIS analysis.Parametric studies were also done to study the responses of active earth pressure distribution to varying parameters.Increasing soil friction angle and wall friction causes decrease in active earth pressure.In contrast,active earth pressure increases with increasing soil unit weight and height of wall.RANKINE's theory has the highest compatibility to finite element analysis among all theories,and utilization of this theory leads to proficient retaining wall design.展开更多
Based on the sliding plane hypothesis of Coulumb earth pressure theory, a new method for calculation of the passive earth pressure of cohesive soil was constructed with Culmann＇s graphical construction. The influence...Based on the sliding plane hypothesis of Coulumb earth pressure theory, a new method for calculation of the passive earth pressure of cohesive soil was constructed with Culmann＇s graphical construction. The influences of the cohesive force, adhesive force, and the fill surface form were considered in this method. In order to obtain the passive earth pressure and sliding plane angle, a program based on the sliding surface assumption was developed with the VB.NET programming language. The calculated results from this method were basically the same as those from the Rankine theory and Coulumb theory formulas. This method is conceptually clear, and the corresponding formulas given in this paper are simple and convenient for application when the fill surface form is complex.展开更多
基金Project(RG086/10AET) supported by the Institute of Research Management and Monitoring,University of Malaya,Malaysia
文摘Determination of distribution and magnitude of active earth pressure is crucial in retaining wall designs.A number of analytical theories on active earth pressure were presented.Yet,there are limited studies on comparison between the theories.In this work,comparison between the theories with finite element analysis is done using the PLAXIS software.The comparative results show that in terms of distribution and magnitude of active earth pressure,RANKINE's theory possesses the highest match to the PLAXIS analysis.Parametric studies were also done to study the responses of active earth pressure distribution to varying parameters.Increasing soil friction angle and wall friction causes decrease in active earth pressure.In contrast,active earth pressure increases with increasing soil unit weight and height of wall.RANKINE's theory has the highest compatibility to finite element analysis among all theories,and utilization of this theory leads to proficient retaining wall design.
基金supported by the National Natural Science Foundation of China (Grant No. 50539110)
文摘Based on the sliding plane hypothesis of Coulumb earth pressure theory, a new method for calculation of the passive earth pressure of cohesive soil was constructed with Culmann＇s graphical construction. The influences of the cohesive force, adhesive force, and the fill surface form were considered in this method. In order to obtain the passive earth pressure and sliding plane angle, a program based on the sliding surface assumption was developed with the VB.NET programming language. The calculated results from this method were basically the same as those from the Rankine theory and Coulumb theory formulas. This method is conceptually clear, and the corresponding formulas given in this paper are simple and convenient for application when the fill surface form is complex.
