Calculation and analysis of unlimited passive earth pressure of cohesionless soil in different movement modes
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Calculation and analysis of unlimited passive earth pressure of cohesionless soil in different movement modes
Vol. 34, Issue 10, (2013)
作者机构:
1. 武汉科技大学 城市建设学院,武汉,430070
2. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,武汉,430071
作者简介:
基金信息:
DOI:
CLC:TU432
Online First:18 October 2013,
Published:2013
稿件说明:
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YANG Tai-hua, GONG Jian-wu, TANG Bin, et al. Calculation and analysis of unlimited passive earth pressure of cohesionless soil in different movement modes[J]. 2013, 34(10).
DOI:
YANG Tai-hua, GONG Jian-wu, TANG Bin, et al. Calculation and analysis of unlimited passive earth pressure of cohesionless soil in different movement modes[J]. 2013, 34(10).DOI:
Calculation and analysis of unlimited passive earth pressure of cohesionless soil in different movement modes
Assuming the internal friction angles of backfills and their displacements are in nonlinear
to adopt the calculation model that was put forward by the author
combined with the indoor mode experiment
the authors calculate and analyze the passive earth pressure acted on the retaining wall in different movement modes: translation (i.e. Mode T)
rotation around a certain point under the wall-bottom (i.e. Mode RBT) and rotation around some point above the wall top (i.e. Mode RTT). The analysis results show that the calculated values and the test values can agree with each other very well in the three ways of the distribution of soil pressure strength along the wall height
the values of the total earth pressure and the location of the action point of the total earth pressure. It is shown that: (1) It is feasible to use the calculation model to calculate the passive earth pressure in different movement modes. (2) For the agreement degree between the calculated values and the test values of the soil pressure strength distribution
it is the best in Mode RBT; next is Mode T; it is relatively the worst in Mode RTT. (3) For the required displacement to reach the Rankine's passive earth pressure force
it is the minimum in Mode T; next is in Mode RTT; it is relatively the maximum in Mode RBT. (4) For the location of the action point of the total earth pressure
in Mode T
those are all at the 1/3 wall’s height from the wall bottom; in Mode RBT
those are all over the 1/3 wall’s height; in Mode RTT
those are all below the 1/3 wall’s height; and in RBT and RTT mode locations of the action point all gradually trend to the 1/3 height place from the wall bottom with the value of n (the ratio of the distance from rotation point to retaining wall proximal endpoint to wall's height) increasing gradually. These views are completely consistent with the fact.