摘要
根据库仑土压力理论的假设,挡土墙上的土压力是由墙后填土在极限平衡状态下出现的滑动楔体产生,给出了墙体绕墙顶转动变位模式下土压力强度、土压力合力和土压力合力作用点的理论公式,并与库仑土压力理论、墙体平动变位模式下土压力和有关实验结果进行了比较· 结果表明,墙体绕墙顶转动变位模式下土压力合力与墙体平动变位模式下土压力合力相等,且等于库仑理论计算结果。
Based on the Coulomb's theory that the earth pressure against the back of a retaining wall is due to the thrust exerted by the sliding wedge of soil from the back of the wall to a plane which passes through the bottom edge of the wall and has an inclination equal to the angle of θ, the theoretical answers to the unit earth pressure, the resultant earth pressure and the point of application of the resultant earth pressure on a retaining wall were obtained for the wall movement mode of rotation about top. The comparisons were made among the formula presented here, the formula for the wall movement mode of translation, the Coulomb's formula and some experimental observations. It is demonstrated that the magnitudes of the resultant earth pressures for the wall movement mode of rotation about top is equal to that determined by the formula for the wall movement mode of translation and the Coulomb's theory. But the distribution of the earth pressure and the points of application of the resultant earth pressures have significant difference.
出处
《应用数学和力学》
EI
CSCD
北大核心
2004年第7期695-700,共6页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(50279027)
天津市自然科学基金资助课题(973606311)
关键词
挡土墙
绕墙顶转动
主动土压力
分布
作用点
retaining wall
rotation about top
active earth pressure
distribution
point of application
