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Well-point dewatering combined surcharge preloading consolidation device for subgrade and application method of such device

A technology of well point precipitation and combined stacking, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of changing construction plans, long construction period, delay in construction period, etc., to shorten construction period, reduce engineering volume, save energy The effect of engineering costs

Active Publication Date: 2016-05-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this loading method can ensure that the foundation needs a large load, it requires a large amount of loading, high cost, and a long construction period.
And often due to the lack of stockpiling materials, the construction period is delayed or the construction plan is changed, which increases the cost

Method used

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  • Well-point dewatering combined surcharge preloading consolidation device for subgrade and application method of such device
  • Well-point dewatering combined surcharge preloading consolidation device for subgrade and application method of such device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Well point dewatering combined surcharge preload reinforcement device for subgrade, such as figure 1 Shown, comprise rubber dam bag 4, well pipe 1, main pipe 6, pumping and filtering device 2 as water storage device,

[0037] The well pipe 1 is a water pumping pipe; the main pipe 6 is a water collecting pipe, which collects the extracted water.

[0038] The rubber dam bag 4 is placed in the subgrade area 8 to be reinforced. A number of well pipes 1 are arranged at the set positions around the area to be reinforced 8, each well pipe 1 is connected with the main pipe 6, the main pipe 6 is connected with the water inlet and outlet of the rubber dam bag through the delivery pipe 3, and the pumping and filtering device 2 is drawn from the well pipe 1. Pump water and filter the groundwater, and transfer the filtered water to the rubber dam bag through the main pipe 6, and the rubber dam bag will carry out surcharge preloading on the area 8 to be reinforced by the weight of t...

Embodiment 2

[0056] The water storage device can also be a rubber water bag, a metal water tank, and combination devices thereof.

[0057] For metal water tanks, there is no need to set steel pipe supports around it.

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Abstract

The invention relates to a well-point dewatering combined surcharge preloading consolidation device for a subgrade and an application method of such a device. The consolidation device comprises a water storage unit, well pipes, a main pipe and a water pump; the water storage device is placed in a region to be consolidated of the subgrade; a plurality of well pipes are arranged at predetermined positions around the region to be consolidated; each well pipe is connected with the main pipe, and the main pipe is connected with a water inlet / outlet of the water storage device; the water pump draws water from the well pipes, and conveys water into the water storage device via the main pipe, and the water storage device performs supercharge preloading on the region to be consolidated by means of dead load of water. By utilizing the well-point dewatering combined surcharge preloading consolidation device for the subgrade, the consumption of such materials as gravel and soil can be greatly reduced, the work amount can be lowered, the construction cost can be decreased, and the environmental pollution can be reduced.

Description

technical field [0001] The invention belongs to the field of road engineering in civil engineering, and in particular relates to a well point dewatering combined surcharge preload reinforcement device for roadbeds and a use method thereof. Background technique [0002] With the rapid development of my country's economy and technology, the scale of construction of basic transportation facilities such as roads and railways has increased unprecedentedly in recent years, but roads and railways are often built on soft soil foundations. This type of foundation has the characteristics of high water content, high compressibility, low strength and low bearing capacity. Therefore, before the construction of the superstructure, it is necessary to strengthen the deep and thick soft soil layer at the lower part. At present, commonly used reinforcement methods include drainage consolidation method and composite foundation method. Traditional drainage consolidation methods include vacuum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 姚占勇张正超张创
Owner SHANDONG UNIV
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