According to the energy theory, the formula for the passive earth pressure of retaining wall is derived, and the calculation method for the ruptureAngle is discussed.
从能量理论出发，导出任意情形下挡土墙被动土压力的计算公式，探讨破裂角的计算方法。
2
The temperature and pressure at the focus is different from the shallow of the crust and the ground. The higher temperature and pressures, the larger conjugate ruptureangle.
地震震源处，其温度和压力与地壳浅处及地表不同，温、压越高，共轭破裂角越大。
3
The ruptureAngle in the equivalent thickness of soil layer method is the Angle with no arrangement for the load. But the ruptureAngle must change when the vehicle load is arranged.