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Built-in retaining wall type soil pressure seepage effect test method

A test method and earth pressure technology, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of not fully considering the physical properties of soil, and the differences between water and soil calculation and cost-effectiveness are not well resolved, and achieve savings. The effect of human and material cost and test efficiency

Active Publication Date: 2016-09-21
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

The calculation of earth pressure involves many factors. Many scholars have conducted in-depth analysis on the calculation of water-earth pressure. Physical properties, differences between water and soil separate calculations and cost-effective calculations are still not well resolved

Method used

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  • Built-in retaining wall type soil pressure seepage effect test method
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  • Built-in retaining wall type soil pressure seepage effect test method

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Embodiment Construction

[0031] The present invention will be described in further detail below according to accompanying drawing:

[0032] according to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 It can be known that a built-in retaining wall earth pressure seepage effect test method includes the following steps:

[0033] 1. Complete the orientation adjustment of the rigid retaining wall 5 and the filling of the soil body 9 in the box body 1, place the flexible loading water bag 7, fix the vertical pressure bearing plate 6 on the box body 1, and fix the vertical pressure bearing plate 6 on the box body 1. Connect a ring of sealing tape 61 between the box body 1 to prevent water loss and water pressure errors during the test, and pressurize the flexible loading water bladder 7 to 200 or 250 or 300 or 350 or 400kPa according to the test requirements;

[0034] 2. Connect the water pump to the water inlet pipe 13 on the tank 1, inject water into the tank 1 from ...

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Abstract

The present invention discloses a built-in retaining wall type soil pressure seepage effect test method. The method comprises the steps of A, completing the azimuth adjustment and the soil filling of a rigid retaining wall inside a box; B, injecting water into the box through a water inlet pipe by means of a water pump; C, infiltrate the water into the soil through the porous plate of the water inlet pipe in the box; D, blocking the water inlet pipe and an exhaust pipe, and standing; E, controlling the movement of the rigid retaining wall through upper and lower jacks; F, acquiring the pressure of the pore water through a pore pressure probe to obtain the result of the active soil pressure and the passive soil pressure under the seepage effect. A test device is composed of a box, an upper sliding block, a lower sliding block, an upper sliding groove, a lower sliding groove, an upper jack, a lower jack, a rigid retaining wall, a vertical bearing plate, a flexible loading water bag, a film type pressure sensor, a pore pressure probe and a displacement sensor. The device is convenient in operation, high in efficiency and energy-saving. Meanwhile, the requirements of testing active and passive soil pressures under the seepage effect are met.

Description

technical field [0001] The present invention relates to the technical field of architectural and civil engineering testing, in particular to a method for testing the seepage effect of earth pressure with a built-in retaining wall, and also to a device for testing the seepage effect of earth pressure with a built-in retaining wall, which is suitable for considering the seepage effect Simultaneously simulate the active and passive earth pressure tests of the rigid retaining wall under different displacement modes. Background technique [0002] The problem of earth pressure is commonly encountered in foundation pit engineering. Correct determination of earth pressure is the premise of reasonable design and smooth construction of the project, and is also the basis for ensuring the safety and economy of the project. [0003] In order to conduct theoretical research on earth pressure, a well-functioning test method is needed for laboratory physical simulation of earth pressure. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08
Inventor 陈善雄戴张俊
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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