Layer-by-layer foundation consolidating method based on barrel-type foundation negative pressure technology

A cylindrical foundation and foundation reinforcement technology, applied in the direction of basic structure engineering, construction, etc., to achieve the effect of increasing depth and breadth, using simple equipment, and outstanding effects

Active Publication Date: 2010-03-10
JLANGSU DAODA OFFSHORE WIND CONSTR TECH
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Problems solved by technology

[0003] The present invention provides a layer-by-layer foundation reinforcement method based on cylindrical foundation negative pressure technology in order to solve the technical problems existing in the known technology. The bearing capacity and stability of the cylindrical foundation can enhance the safety of the cylindrical foundation in use

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  • Layer-by-layer foundation consolidating method based on barrel-type foundation negative pressure technology
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  • Layer-by-layer foundation consolidating method based on barrel-type foundation negative pressure technology

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Embodiment Construction

[0011] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0012] see Figure 1 ~ Figure 3 , the present invention is based on a foundation reinforcement method based on cylindrical foundation negative pressure technology, comprising the following steps:

[0013] (1) Open a reserved negative pressure hole 3 on the top cover plate of the cylindrical foundation 1, weld a plurality of steel pipes 5 of different lengths with sieve holes 6 and lay geotextiles under the top cover plate of the cylindrical foundation 1 2 water / gas permeable materials; (2) according to the set penetration negative pressure value, sink the cylindrical foundation negative pressure into place; (3) use negative pressure equipment to draw out the cylindrical foundation 1 through the reserved negative pressure hole 3 The water and...

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Abstract

The invention discloses a layer-by-layer foundation consolidating method based on a barrel-type foundation negative pressure technology, comprising the following steps: (1) a reserved negative pressure hole is arranged on a cover plate of the barrel top of the barrel-type foundation, a plurality of steel tubes with sieving holes at the side walls are fixedly connected below the cover plate of thebarrel top of the barrel-type foundation, the length of the plurality of steel tubes is lengthened gradually according to the set depth of layered consolidated foundation soil layer in the direction starting from the negative pressure hole to the barrel wall of the barrel-type foundation, each steel tube is parallel to the central line of the barrel-type foundation, and geotextile is laid below the cover plate of the barrel top of the barrel-type foundation; (2) according to set injection negative pressure value, the barrel-type foundation is sunk and positioned by negative pressure; and (3) negative pressure equipment is used for pumping water and/or air by the reserved negative pressure hole and carrying out negative pressure foundation consolidation treatment according to set prepressing value of the foundation soil till the foundation soil is overconsolidated. The layer-by-layer foundation consolidating method realizes layer-by-layer foundation consolidation, and effectively increases the depth and width of the foundation consolidation, thus improving the bearing capability and stability of the barrel-type foundation.

Description

technical field [0001] The invention relates to a foundation reinforcement method, in particular to a layer-by-layer foundation reinforcement method based on cylindrical foundation negative pressure technology. Background technique [0002] At present, in port, ocean, water conservancy and bridge engineering, especially on silty soil, the settlement problem of the cylindrical foundation as a shallow foundation is the main problem in the application of the cylindrical foundation. In this area with unfavorable geological conditions, it is difficult for the cylindrical foundation to meet the requirements of bearing capacity and stability, and there are safety problems in use. Contents of the invention [0003] The present invention provides a layer-by-layer foundation reinforcement method based on cylindrical foundation negative pressure technology in order to solve the technical problems existing in the known technology. The bearing capacity and stability of the cylindrical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/28E02D27/52
Inventor 丁红岩张浦阳练继建
Owner JLANGSU DAODA OFFSHORE WIND CONSTR TECH
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