Volume 43 Issue 3
Mar.  2022
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MA Ming, LI Mingdong, LANG Chaopeng, ZHANG Jingwu, WAN Yukuai. Numerical Solutions of the Nonlimit-State Active Earth Pressure Under Backfill Wall Rotation Around the Bottom[J]. Applied Mathematics and Mechanics, 2022, 43(3): 312-321. doi: 10.21656/1000-0887.420178
Citation: MA Ming, LI Mingdong, LANG Chaopeng, ZHANG Jingwu, WAN Yukuai. Numerical Solutions of the Nonlimit-State Active Earth Pressure Under Backfill Wall Rotation Around the Bottom[J]. Applied Mathematics and Mechanics, 2022, 43(3): 312-321. doi: 10.21656/1000-0887.420178

Numerical Solutions of the Nonlimit-State Active Earth Pressure Under Backfill Wall Rotation Around the Bottom

doi: 10.21656/1000-0887.420178
  • Received Date: 2021-06-29
  • Accepted Date: 2021-10-07
  • Rev Recd Date: 2021-10-07
  • Available Online: 2022-02-11
  • Publish Date: 2022-03-08
  • The displacement pattern of wall footing rotation occurs for the backfill wall constrained at the bottom. The non-limit states of the soil layers at different depths are different in this pattern, and present difficulties for soil stress calculation. Based on the existing research, the functional relationship between soil strength parameters of the wall footing rotation pattern and wall displacements were detruded. Under the assumption that the backfill forms a circular arch and the slip surface is uncertain, the backfill was divided into long horizontal slices, the numerical iteration scheme for the nonlimit-state active earth pressure in the wall footing rotation pattern was constructed, and the numerical calculation method for the active earth pressure was given. The numerical method not only determines the slip surface shape, but calculates the intensity, the resultant force and the action point of the nonlimit-state active earth pressure. The backfill slip surface is a curved one and the new numerical solution is more consistent with the existing full-scale test results than the existing analytical results. This work provides more accurate numerical solutions of the nonlimit-state active earth pressure on the rigid retaining wall in the footing rotation pattern, and makes a practical guide to design of such retaining walls.

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