Earth Pressure of Retaining Structure Based on Probability and Its Influence on Reliability Index

LIU Chang - qing; LUO Yi - nong; WEI Yong - xing

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Journal of Railway Engineering Society ›› 2014, Vol. 31 ›› Issue (7) : 43-47.

Earth Pressure of Retaining Structure Based on Probability and Its Influence on Reliability Index

LIU Chang - qing 1 ,LUO Yi - nong 2, WEI Yong - xing 2

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Abstract

Research purposes ： For the retaining structure, the main function is to support the lateral earth pressure. Studying the earth pressure from the viewpoint of probability theory is an important content in the study of retaining structure limit state. By analyzing the influence of main random variable uncertainty on earth pressure and the function calculation, this paper has analyzed the uncertainty of earth pressure calculation model to explain the relationship between earth pressure and retaining structure reliability.

Research conclusions :(1) The earth pressure is the key variable influencing the function calculation of retaining structure. (2) The uncertainty of comprehensive internal friction angle and uncertainty of computing model are the main source of uncertainty of earth pressure calculation. (3 ) The earth pressure calculation method has great influence on reliability index, and it is very important to correctly choose calculation model, which is the key to the reliability index calculation. (4) The earth pressure calculation based on the theory of probability is worth further study. (5) The research conclusions can be used for reference to the engineering designers and researchers.

Key words

earth pressure / random variable / calculation model / uncertainty

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LIU Chang - qing, LUO Yi - nong, WEI Yong - xing. Earth Pressure of Retaining Structure Based on Probability and Its Influence on Reliability Index[J]. Journal of Railway Engineering Society, 2014, 31(7): 43-47

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