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| Analysis of seismic on-limit active earth pressure of retaining wall in RB mode |
| TANG Jinhuan1，HUANG Rui1，2 |
| (1. College of Civil Engineering，Shaoxing University，Shaoxing，Zhejiang 312000，China；2. Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province，Shaoxing University，Shaoxing，Zhejiang 312000，China) |
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Abstract Based on the pseudo-dynamic method and the horizontal layer analysis method，the rigid retaining wall under seismic load is taken as the research object. According to the conclusions of previous experimental research，the calculation expression of seismicnon-limitactive earth pressure and resultant force point in RB mode is derived，which considers the influence of the retaining wall displacement on the exerting value of friction angles. The calculation model is divided into two kinds of non-limit state conditions according to the difference of the maximum displacement of the wall top，and the relationship between the displacement of the retaining wall，the seismic load，and the earth pressure is established. The parametric analysis discusses the influence of the displacement of a wall top on the distribution of the seismic lateral earth pressure，the exertion degree of the friction angle and the resultant force point of the earth pressure. The results indicate that the horizontal or vertical seismic action and the non-limit displacement state of a retaining wall can both increase the resultant force point of active earth pressure. Compared with the traditional limit state seismic earth pressure theory，the proposed method describes the development process of seismic earth pressure with retaining wall displacement more reasonably and has a certain reference for developing non-limit earth pressure theory and improving seismic calculation method in practical engineering.
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2020, Vol. 39 
