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Construction method for vacuum combined preloading consolidated foundation

A technology that combines heap loading and construction methods, which is applied in basic structure engineering, soil protection, construction, etc., can solve the problems of backward theoretical research, restricting development and engineering application, etc., to speed up soil consolidation and improve soil state , the reinforcement effect is obvious

Inactive Publication Date: 2014-09-17
LUOYANG GUANGXIN CONSTR GRP
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Problems solved by technology

[0002] Soft clay with poor engineering properties is distributed in vast areas of our country, and drainage consolidation method is generally used for soft clay foundation treatment; as a kind of drainage consolidation method, vacuum preloading has been widely used in recent years to strengthen soft soil foundation, and has achieved great achievements. Good engineering and economic benefits; but the current theoretical research on vacuum preloading reinforcement foundation lags behind engineering practice, which restricts the further development and engineering application of the method; for the prior art, the invention provides a vacuum combined surcharge The construction method of preloading and strengthening the foundation has an obvious effect on soft soil foundation reinforcement, which can speed up soil consolidation, increase the bearing capacity of the foundation, improve the state of the soil, and reduce the post-construction settlement of buildings

Method used

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Embodiment Construction

[0020] The present invention will be further described below.

[0021] A construction method for vacuum combined surcharge preloading and preloading to strengthen foundations, comprising the following steps:

[0022] 1. Sand cushion laying: Before laying the sand layer, level the site, measure and stake out, and place the central axis pile and side pile elevation pile according to the design range; in order to ensure the drainage of the sand cushion and the transmission of vacuum, then Lay a layer of water-permeable geotextile, and then lay a 20CM thick sand cushion. After the plastic drainage board is laid and the vacuum drainage pipe is installed, a 30CM thick sand layer is laid, and it is smoothed. The sand cushion laying range should exceed the boundary of the plastic drainage board. up to the sealing groove;

[0023] 2. Plastic drainage board construction: use the "Binwang" brand, a C-type plastic drainage board recommended by the State Economic and Trade Commission and ...

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Abstract

The invention discloses a construction method for a vacuum combined preloading consolidated foundation, and belongs to the field of building construction. The construction method is characterized by comprising the steps of (1) laying a sand mat; (2) constructing a plastic drainage plate; (3) arranging a drainage filtering water pipe, and constructing a vacuum pumping device and a sealing system; (4) conducting vacuum combined preloading; (5) conducting field observation and instrument embedment. According to the construction method for the vacuum combined preloading consolidated foundation, the reinforcement effect on a soft soil foundation is obvious, soil body solidification can be accelerated, the soil body status is improved, post-construction settlement of a building is reduced, and the novel foundation treatment method is expected to be widely used in construction for hydraulic works.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to a construction method for vacuum combined surcharge preloading and ground reinforcement. Background technique [0002] Soft clay with poor engineering properties is distributed in vast areas of our country, and drainage consolidation method is generally used for soft clay foundation treatment; as a kind of drainage consolidation method, vacuum preloading has been widely used in recent years to strengthen soft soil foundation, and has achieved great achievements. Very good engineering and economic benefits; but the current theoretical research on vacuum preloading reinforcement foundation lags behind engineering practice, which restricts the further development and engineering application of the method; for the prior art, the invention provides a vacuum combined surcharge The construction method of preloading and strengthening the foundation has an obvious effect o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10
Inventor 蔡丽朋孟逵秦瑛李健郭江明刘国丽李瑾王惠琴
Owner LUOYANG GUANGXIN CONSTR GRP
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