重力式挡土墙主动土压力平面与空间算法的对比分析

计算重力式挡土墙主动土压力的传统方法如郎肯理论、库伦理论均将挡土墙视为平面问题来研究,但实际上挡土墙墙背填土主动土压力具有空间特性。文中对重力式挡土墙主动土压力的计算从平面问题和空间问题两方面进行了理论分析。实例的数值计算结果表明,按平面问题计算的重力式挡土墙的主动土压力比按空间问题计算的主动土压力较为保守,但按空间问题计算的主动土压力较按平面问题计算的主动土压力也存在安全富余量偏小的问题。

Comparison and Analysis of Plane and Space Algorithm of Active Earth Pressure on Gravity Retaining Wall

The traditional calcualtion methods of active earth pressure on gravity retaining walls,such as Rankine Theory and Coulomb Theory,take the wall as a plane problem to study.But the active earth pressure on gravity retaining wall has spatial characteristics.The paper analyzes the active earth pressure on gravity retaining wall from the aspects of plane problem and space problem.The numerical calculation results show that plane earth pressure is more conservative than the space active earth pressure,meantime,t...