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Directly discharging type vacuum prepressing ground foundation treatment method

A ground treatment, in-line technology, applied in the field of foundation engineering, can solve problems such as large power loss, reduce reinforcement costs, improve efficiency and reinforcement effect, and reduce losses along the way

Active Publication Date: 2008-07-09
WATER TRANSPORT PLANNING & DESIGN INST
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  • Abstract
  • Description
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Problems solved by technology

The vacuum pressure is damped by the sand cushion, vacuum filter tube and filter membrane during the transmission process, and the power loss is very large

Method used

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  • Directly discharging type vacuum prepressing ground foundation treatment method

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Embodiment Construction

[0008] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0009] As shown in Figure 1, in the direct row vacuum preloading ground treatment method, a main pipe 2 is provided on the vacuum device 1, the main pipe 2 passes through the upper sealing film 3, and is arranged on the working cushion 7 on the surface of the foundation, and the main pipe 2 is divided into two parts. A plurality of branch pipes 4 are provided, and each branch pipe 4 is connected with the drainage board 6 through the connection pipe 5, and the moisture in the drainage board 6 is directly extracted.

[0010] Further, each vacuum device, main pipe and branch pipe in the method of the present invention constitute a vacuum unit, and each vacuum pre-compression zone in the method of the present invention can be composed of one or more vacuum units.

[0011] The technical scheme of the present invention and i...

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Abstract

The invention discloses a direct-drainage vacuum pre-pressing groundwork treatment method, which comprises: a main pipe is arranged in a vacuum device, a plurality of branch pipes are divided from the main pipe, each branch pipe is connected to a drainage plate through connection pipe to directly draw out the water inside the drainage plate. The treatment method of the invention avoids the use of horizontal drainage sand pad layer, vacuum filtrate pipe and film, and directly connects the plastic drainage plate in soft groundwork with the vacuum pipe by use of connection pipes, thereby greatly reducing the vacuum pressure transmission loss, improving vacuum transmission effect and strengthening effect, and lowering consolidating cost.

Description

technical field [0001] The invention relates to the technical field of foundation engineering, in particular to a vacuum preloading foundation treatment method. Background technique [0002] At present, the vacuum preloading treatment method adopted for the treatment of soft soil foundation is to lay a horizontal sand cushion layer on the soft soil foundation, insert a drainage board, and connect the branch pipe composed of the main pipe and the filter pipe buried in the sand cushion layer through a vacuum device. The water in the soft soil foundation is extracted through the drainage board, sand cushion, filter pipe, and main pipe to achieve the purpose of strengthening the soft soil foundation. The transmission process of vacuum pressure is: vacuum device→main pipe→branch (filter pipe)→sand cushion→drainage plate→reinforced soil. The vacuum pressure is damped by the sand cushion, the vacuum filter tube and the filter membrane during the transmission process, and the power...

Claims

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Application Information

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IPC IPC(8): E02D3/10E02D3/02
Inventor 夏玉斌刘强邓磊
Owner WATER TRANSPORT PLANNING & DESIGN INST
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