STABILITY ANALYSIS OF WATER FRONT RETAINING WALL SUBJECTED TO SEISMIC LOADS USING PSEUDO-DYNAMIC METHOD
ZHOU Xiaoping1，JI Xuan1，QIAN Qihu2
(1. College of Civil Engineering，Chongqing University，Chongqing 400045，China；2. Engineering Institute of
Engineers Crops，PLA University of Science and Technology，Nanjing，Jiangsu 210007，China)
Abstract：It is assumed that failure surface of backfill soil is composite curved one. Pseudo-dynamic method，in which time-history curves of acceleration was simulated by sinusoidal motions，was adopted to research the stability of the water front retaining wall subjected to seismic loads. The damping force and the inertial force acting on retaining wall and backfill soil were investigated. The closed-form solutions of passive earth pressure and dynamic factor of safety against sliding and rotation of the retaining wall during earthquake were obtained. Finally，effects of seismic acceleration，amplification factor，wall height，physico-mechanical parameters of backfill soil and hydrodynamic pressure acting on water front retaining wall on sliding displacement，dynamic factor of safety against sliding and rotation of the retaining wall were quantitatively analyzed. It is concluded that the stability of the water front retaining wall is getting worse when the earthquake speeds up，the water level gets higher and the internal friction angle gets smaller.
[1] 李承亮，冯 春，刘晓宇. 拟静力方法适用范围及地震力计算[J]. 济南大学学报，2011，25(4)：431–436.(LI Chengliang，FENG Chun，LIU Xiaoyu. The application range of pseudo-static method and the calculation of earthquake force[J]. Journal of University of Jinan，2011，25(4)：431–436.(in Chinese))
[2] 杜修力，路德春. 土动力学与岩土地震工程研究进展[J]. 岩土力学，2011，32(增2)：10–20.(DU Xiuli，LU Dechun. Advances in soil dynamics and geotechnical earthquake engineering[J]. Rock and Soil Mechanics，2011，32(Supp.2)：10–20.(in Chinese))
[3] STEEDMAN R S，ZENG X. The seismic response of waterfront retaining walls[C]// Proceedings of ASCE Specialty Conference on Design and Performance of Earth Retaining Structure. New York：Special Technical Publication，Cornell University，1999：872–886.
[4] EBELING R M，MORRISON E E J. The seismic design of waterfront retaining structures[R]. Washington District of Colombia：United States of America Army Technical Report，1992.
[5] CHOUDHURY D，AHMAD S M. Design of waterfront retaining wall for the passive case under earthquake and tsunami[J]. Applied Ocean Research，2007，112(29)：37–44.
[6] CHOUDHURY D，AHMAD S M. Stability of waterfront retaining wall subjected to pseudo-static earthquake forces[J]. Ocean Engineering，2007，34(14/15)：1 947–1 954.
[7] TERZAGHI K. Theoretical soil mechanics[M]. New York：John Wiley and Sons，1943：24–26.
[8] TERZAGHI K，PECK R B，MESRI G. Soil mechanics in engineering practice[M]. New York：John Wiley and Sons，1996：37–39.
[9] BASHA B M，BABU G L S. Seismic rotational displacements of gravity walls by pseudo dynamic method with curved rupture surface[J]. ASCE International Journal of Geomechanics，2010，10(3)：93–105.
[10] BASHA B M，BABU G L S. Computation of sliding displacements of bridge abutments by pseudo-dynamic method[J]. Soil Dynamics and Earthquake Engineering，2009，29(1)：103–120.
[11] BASHA B M，BABU G L S. Reliability assessment of internal stability of reinforced soil structures：a pseudo-dynamic approach[J]. Soil Dynamics and Earthquake Engineering，2010，30(5)：336–353.
[12] WESTERGAARD H M. Water pressures on dams during earthquakes[J]. Transactions of the American Society of Civil Engineers，1933，98(3)：418–433.
[13] BASHA B M，BABU G L S. Seismic reliability assessment of external stability of reinforced soil walls using pseudo-dynamic method[J]. Geosynthetics International，2009，16(3)：197–215.
[14] KRAMER S L. Geotechnical earthquake engineering[M]. Upper Saddle River：Prentice Hall，1996：66–69.
[15] 布占宇. 斜拉桥地震响应分析中的索桥耦合振动和阻尼特性研究[博士学位论文][D]. 杭州：浙江大学，2005.(BU Zhanyu. Cable-deck coupled vibration and damping characteristic research in the seismic response analysis of cable-stayed bridges[Ph. D. Thesis][D]. Hangzhou：Zhejiang University，2005.(in Chinese))
2012, Vol. 31 
