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Test device and test method for simulating rectangular water head boundary to act on soil

A test device and water head technology, applied in the field of foundation one-dimensional model test device, can solve the problems of sudden deformation, soil stress, etc., and achieve the effect of increasing saturation rate and degree of saturation, avoiding test errors, and avoiding measurement accuracy

Pending Publication Date: 2018-08-10
ZHEJIANG UNIV
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Problems solved by technology

Inspired by the fact that the soil units in the basic geotechnical tests are all cylindrical, the model section is set as a circle, which solves the sudden force and deformation of the soil caused by the four corners of the rectangular section model box in previous tests The problem

Method used

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  • Test device and test method for simulating rectangular water head boundary to act on soil
  • Test device and test method for simulating rectangular water head boundary to act on soil
  • Test device and test method for simulating rectangular water head boundary to act on soil

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] Such as figure 1 As shown, the present invention is a test device for simulating a rectangular hydraulic head boundary action soil, including a main cylinder 1 , a data acquisition instrument 2 , a vacuum pump 3 and a rectangular hydraulic head boundary control system 4 .

[0039] The main cylinder 1 consists of a top cylinder 1-1, a pore water pressure gauge fixing device 1-2, a waterproof rubber ring 1-3, several intermediate cylinders 1-4, and a bottom cylinder 1-5 , a trolley 1-6, and a cover plate 1-7, and each section of the cylinder is made of plexiglass, which can facilitate the observation of the deformation of the soil in the test; the top cylinder 1-1 is equipped with a cover plate 1- 7. The center of the lower surface of the cover plate 1-7 is provided with a permeable stone 1-7-2 (such as Figure 4 As shown), the water outlet valve...

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Abstract

The invention discloses a test device and a test method for simulating a rectangular water head boundary to act on soil. The device comprises a main body cylinder, a data acquirer, a vacuum pump and arectangular water head control system; the main body cylinder comprises a cover plate, a top cylinder segment, a plurality of middle cylinder segments, a bottom cylinder segment and a dolly; and porewater pressure fixers are mounted on the main body cylinder at different heights. The device and the method can be used to simulate the rectangular dynamic continuous change process of confined waterin a foundation, measure and calculate the water and soil pressure and deformation under the action of the rectangular dynamic confined water, dispose relevant test data and determine the bearing, the deformation development rule and other problems of the foundation; and the device and the method can be used to study the influences of the mean value and the amplitude of the change of the rectangular dynamic confined water, provide an effective test data support for studying the foundation problems caused by the rectangular dynamic confined water, and provides a basis for a theoretic analysismodel.

Description

technical field [0001] The invention relates to a foundation model test device, in particular to a one-dimensional model test device for the foundation under the condition that the pressurized water presents a rectangular wave dynamic change, which can be used for simulating a one-dimensional weakly permeable foundation soil. The water and soil pressure response when the pressurized water level changes dynamically in a rectangular shape, the settlement of the foundation with the change of the confined water head, and the damage conditions and failure modes of the foundation under the action of dynamic confined water are studied. Background technique [0002] In areas along the river and along the sea, the confined water level at the bottom of the aquitard is often characterized by dynamic changes due to factors such as tides. In particular, in the event of special circumstances such as heavy rain, dam flood discharge, and upstream dam breaks, the size of the confined water a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 应宏伟沈华伟章丽莎王迪许鼎业朱成伟李哲伟虞展望张宇宣陈川
Owner ZHEJIANG UNIV
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