Method for determining pore water pressure in saturated soil layer under load effect of embedded anchor plate

A technology of pore water pressure and determination method, applied in the field of coastal soil engineering, which can solve the problems of inaccurate calculation, difficulty in comprehensive consideration, and ignoring the combined effect of soil skeleton.

Active Publication Date: 2020-12-29
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the existing technology ignores the combined effect of the effective stress of the soil skeleton and the pore water pressure, making it difficult to fully consider s

Method used

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  • Method for determining pore water pressure in saturated soil layer under load effect of embedded anchor plate
  • Method for determining pore water pressure in saturated soil layer under load effect of embedded anchor plate
  • Method for determining pore water pressure in saturated soil layer under load effect of embedded anchor plate

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Embodiment

[0306] Taking numerical calculation as an example, the numerical results under uniformly distributed circular load per unit intensity are given. By comparing with the literature solutions and finite element results, the validity of the solution of the present invention is verified. At the same time, the soil permeability and Effect of thickness on pore hydrodynamic response. Unless otherwise specified, the calculation parameters of the saturated soil layer are listed in Table 1, and the coordinates of the observation point are r=0, θ=θ 0 =0.

[0307] Table 1. Calculation parameters of saturated soil layer

[0308]

[0309] Verification and comparison of solutions

[0310] In the first example, let ρ fR →0,n f →0 and L→∞, so that the solution of the present invention degenerates to the case of elastic half-space single-phase soil, and compares its dynamic response under the action of a uniform disk source of unit strength with the calculation result of Pak, the result is...

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Abstract

The invention discloses a method for determining pore water pressure in a saturated soil layer under the load effect of an embedded anchor plate, which comprises the following steps: regarding the action of the embedded elastic anchor plate on a soil body as a uniformly distributed circular load which comprises effective stress and pore fluid pressure components; and giving a calculation formula of pore water pressure in a saturated soil layer with limited thickness on the rigid foundation under the load effect of the anchor plate. The invention considers the influence of the soil layer thickness, and obtains an existing half-space solution or a full-space solution through degradation processing; the anchor plate load is considered to be in the form of combination of three soil skeleton effective stress components and one pore water pressure, and can adapt to the situation of complex load combination.

Description

technical field [0001] The invention belongs to the technical field of coastal soil engineering, in particular to a method for determining pore water pressure in a saturated soil layer under the load of an embedded anchor plate. Background technique [0002] In coastal engineering, the anchor plate is an important foundation, which is usually embedded in the fluid-filled soil to provide anchorage for the structure. At the same time, the anchor plate also exerts force on the surrounding soil, causing pore water pressure in the soil, which further leads to consolidation deformation of the soil or liquefaction of saturated sand. Therefore, under such loads, the calculation of the pore water pressure of saturated soil plays an important role, which is of great significance for the design and construction of anchor plate structures in related projects. [0003] In the prior art, the soil is usually considered as a fluid-filled elastic porous half-space or full-space medium, and ...

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Application Information

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IPC IPC(8): G06F30/13G06F30/23G06F17/12G06F17/15G06F17/16G06F119/14
CPCG06F30/13G06F30/23G06F17/12G06F17/15G06F17/16G06F2119/14Y02A90/30
Inventor 张石平林晨张军辉徐站
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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