(1. Key Laboratory of Soft Soils and Geoenvironmental Engineering，Ministry of Education，Zhejiang University，Hangzhou，Zhejiang 310058，China；2. Institute of Geotechnical Engineering，Zhejiang University，Hangzhou，Zhejiang 310058，China)
Abstract：On the basis of quasi-static theory of Mononobe-Okabe，the angle of sliding surface is obtained according to the static equilibrium after analyzing the stress of the filling behind retaining wall. Considering soil arching effect，the static equilibrium and moment equilibrium equations are then derived from analysis of the stress of microelement of filling layer which is in a normal stress state，using the method of horizontal layer analysis. After that，the formulas of active earth pressure，coefficient of earth pressure and action point of resultant force of filling behind the retaining wall under seismic activity，which are more usable，are respectively obtained. The influences of internal friction angle，wall friction angle，horizontal and vertical seismic coefficients on the angle of sliding surface，active earth pressure，coefficient of earth pressure and action point of resultant force are numerically analyzed. Furthermore，the results obtained by the proposed method are compared with those computed by other methods and experimental observation.
[1] OKABE S. General theory of earth pressure and seismic stability of retaining wall and dam[J]. Journal of the Japanese Society of Civil Engineers，1924，10(5)：1 277–1 323.
[2] MONONOBE N，MATSUO H. On the determination of earthquake pressure during earthquake[C]// Proceedings of World Engineering Congress. [S. l.]：[s. n.]，1929：177–185.
[3] MORRISON E E，EBELING R M. Limit equilibrium computation of dynamic passive earth pressure[J]. Canadian Geotechnical Journal，1995，32：481–487.
[4] 刘忠玉，杨会朋，何盛东. 刚性挡土墙地震主动土压力的非线性分布[J]. 郑州大学学报：工学版，2004，25(2)：36–38.(LIU Zhongyu，YANG Huipeng，HE Shengdong. Nonlinear distribution of seismic active earth pressure on rigid retaining walls[J]. Journal of Zhengzhou University：Engineering Science，2004，25(2)：36–38.(in Chinese))
[5] 王立强，王元战，迟丽华. 挡土墙地震土压力及其分布[J]. 中国港湾建设，2007，(5)：1–5.(WANG Liqiang，WANG Yuanzhan，CHI Lihua. Distribution of seismic soil pressure on a retaining wall[J]. China Harbour Engineering，2007，(5)：1–5.(in Chinese))
[6] 杨 剑，高玉峰，程永锋，等. 地震条件下倾斜挡土墙被动土压力研究[J]. 岩土工程学报，2009，31(9)：1 391–1 396.(YANG Jian，GAO Yufeng，CHENG Yongfeng，et al. Passive earth pressure of inclined retaining walls under seismic condition[J]. Chinese Journal of Geotechnical Engineering，2009，31(9)：1 391–1 396.(in Chinese))
[7] 卢坤林，杨 扬，朱大勇，等. 考虑土拱效应的挡土墙地震土压力及其分布[J]. 水电能源科学，2010，28(5)：65–68.(LU Kunlin，YANG Yang，ZHU Dayong，et al. Seismic earth pressure on retaining wall considering soil arching effects and its distribution[J]. Water Resources and Power，2010，28(5)：65–68.(in Chinese))
[8] 茅以升. 挡土墙土压力的两个经典理论中的基本问题[J]. 土木工程学报，1954，5(3)：249–282.(MAO Yisheng. Basic problems in classic theory of earth pressure on retaining wall[J]. China Civil Engineering Journal，1954，5(3)：249–282.(in Chinese))
[9] 章瑞文，徐日庆. 土拱效应原理求解挡土墙土压力方法的改进[J]. 岩土力学，2008，29(4)：1 057–1 060.(ZHANG Ruiwen，XU Riqing. Solution of problem of earth pressure on retaining wall calculated by method of soil arching effect[J]. Rock and Soil Mechanics，2008，29(4)：1 057–1 060.(in Chinese))
[10] TERZAGHI K. Theoretical soil mechanics[M]. New York：Wiley. 1943：82–83.
[11] KINGSLEY H W. Arch in arching[J]. Journal of Geotechnical Engineering，1989，115(3)：415–419.
[12] HANDY R L. The arch in soil arching[J]. Journal of Geotechnical Engineering，1985，111(3)：302–318.
[13] 李永刚. 挡土墙被动土压力研究[J]. 岩土力学，2003，24(2)：273–276.(LI Yonggang. Study of passive earth pressure of retaining wall[J]. Rock and Soil Mechanics，2003，24(2)：273–276.(in Chinese))
2013, Vol. 32 
