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Indoor model testing device and testing method employing air-pressure splitting vacuum preloading method

A vacuum preloading method and indoor model technology, applied in soil material testing, material inspection products, infrastructure engineering and other directions, can solve problems such as insufficient depth, and achieve the effects of reasonable physical simulation conditions, simple construction and low cost.

Active Publication Date: 2014-07-09
SOUTHEAST UNIV
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Problems solved by technology

The air pressure splitting vacuum preloading method is newly proposed. Only a small amount of indoor research and small-scale field tests have been carried out in the Institute of Geotechnical Engineering of Southeast University, but it is far from deep enough.
In order to comprehensively promote the application of air pressure splitting vacuum preloading method for soft soil foundation treatment, it is necessary to carry out systematic experimental research to explore the reinforcement mechanism, process and construction control methods and measures of air pressure splitting vacuum preloading method. There is no special device for the model test of soft soil reinforced by air pressure splitting and vacuum preloading method, and corresponding test devices need to be developed

Method used

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  • Indoor model testing device and testing method employing air-pressure splitting vacuum preloading method

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0029] Such as figure 1 Shown: an indoor model test device for pneumatic splitting vacuum preloading method, including a model tank, a stacking system, a vacuum loading system, a pneumatic splitting system and a measurement system;

[0030] The model tank is composed of a plastic drum 1, a plastic drum base 2, a plastic drum top cover 3, and steel bars 4; wherein the plastic drum 1 is an organic transparent plastic drum with a diameter of 50 cm and a height of 120 cm. The plastic drum base 2 is a high-strength plastic plate (PVC) or steel plate with a thickness of 2 cm and a diameter of 60 cm; the plastic drum top cover 3 is made of the same material as the base. The plastic drum base 2 is completely sealed with the plastic drum 1. The plastic drum base 2 and the plastic drum top cover 3 have circular holes with a diameter of 10mm and threaded hol...

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Abstract

The invention discloses an indoor model test device for air pressure splitting vacuum preloading method, which includes a model tank, a stacking system, a vacuum loading system, an air pressure splitting system and a measuring system; the model tank includes a plastic drum, a plastic round Bucket base, plastic drum top cover and steel bars; the stacking system is a lever-type loading device; the vacuum loading system includes a drainage system, a sealing system and a vacuum system; the air pressure splitting system includes an air nozzle, an air pipe Road, pressure flow rate controller and air compressor; the range system includes displacement sensor, pore water pressure gauge and data acquisition instrument. The invention also discloses a method of using the indoor model test device of the air pressure splitting vacuum preloading method. The model test device of the invention has a reasonable and simple structure and is convenient to operate, and can be used for carrying out model tests of soft soil reinforced by the air pressure splitting vacuum preloading method.

Description

technical field [0001] The invention relates to the field of soft soil foundation reinforcement, and more particularly relates to an air pressure splitting vacuum preloading method for strengthening a soft soil model test device and a test method, which are suitable for the air pressure splitting vacuum preloading method for strengthening soft soil model tests. Background technique [0002] Soft soil foundation treatment is a technical problem often faced by engineering construction in coastal areas along the river in my country. Especially in southeastern coastal areas of my country, deep marine soft soil treatment is one of the key technologies for urban construction, port engineering, and transportation facility construction. [0003] Commonly used soft soil foundation treatment methods include replacement and filling method, drainage consolidation method, cement-soil mixing method, gravel and sand pile method, grouting method, vibrating method, geopolymer and underpinning...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24E02D3/10
Inventor 刘松玉韩文君章定文
Owner SOUTHEAST UNIV
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