J4  2012, Vol. 46 Issue (3): 470-475    DOI: 10.3785/j.issn.1008-973X.2012.03.013
 土木工程

1.浙江大学 岩土工程研究所,浙江 杭州 310058; 2.浙江省建筑设计研究院,浙江 杭州 310006
Seismic active earth pressure on retaining wall
with two-layer of cohesive backfill
MA Shao-jun1, 2, HAN Tong-chun1, HUANG Fu-ming1, WANG Kui-hua1
1.Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
2. Zhejiang Province Architectural Design and Research Institute, Hangzhou 310006, China
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Abstract:

An advanced computation approach was presented to study the seismic  active earth pressure on retaining wall with two-layer cohesive backfill. Based on the assumption of Mononobe-Okabe theory, the expression for the total seismic active earth pressure was derived. The cohesion force on the sliding plane and the adhesive force on the interface of backfill and retaining wall were considered in the analysis. The  developed formula can be degenerated to Mononobe-Okabe earth pressure expression for the case of homogeneous cohesiveless soil backfill. The parametric study shows that the seismic active earth pressure increases with the increase  of horizontal seismic acceleration coefficient, while it decreases with the increase  of vertical seismic acceleration coefficient. Both horizontal and vertical seismic inertia forces have significant effect on the value of seismic active force. Compared with the results of other methods for calculating the seismic earth pressure, the value of seismic active force obtained from the present study is lower than that of the layer method for the same parameters.

 : TU 432

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