在新版《建筑边坡工程技术规范》（GB 50330-2013）中，所采用的新的挡土墙地震主动土土压力公式存在一定计算问题及未给出作用点高度计算公式。针对这一问题，结合既有研究成果，给出计算公式的完整推导过程和地震主动土土压力作用点高度计算公式，并指出了该规范中的挡土墙地震主动土压力公式的错误。公式推导采用旋转挡土墙计算模型的变换法，将在地震条件下主动土压力的求解问题转化为在静力条件下主动土压力的求解问题，将经旋转地震角后的土压力计算参数，套用非地震条件下的主动土压力计算公式推导过程，直接获得在地震条件下主动土压力表达式，使以往地震土压力计算模型繁琐的求解过程得到很大程度的简化。

The latest edition of ‘Technical code for building slope engineering (GB 50330-2013)’ employs a novel seismic active earth pressure formula of retaining wall. However, there exists a certain degree of deviation when seismic earth pressure is calculated by using the formula in the code, and the height of action point of seismic earth pressure has not been given. Based on research results in the literature, we develop a complete derivation of the formula and the action point height of seismic earth pressure, and point out the mistake existed in the code (GB 50330-2013). The transformation method with a rotating computational model of retaining wall is adopted in the formula derivation, in which the seismic active earth pressure computing problem is converted into non-seismic active one. Therefore, the active earth pressure formula for non-seismic condition is developed by applying mechanically derivation process of the active earth pressure. The earth pressure calculating parameters are utilized by rotating earthquake angle. This achievement simplifies the complex solution procedure for the active earth pressure.