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Water-retaining cofferdam structure and construction method thereof

A construction method and technology of cofferdams, applied in infrastructure engineering, construction, etc., can solve the problems of uncompacted underwater fill, limited loading rate, serious occupation of river channels, etc., to achieve convenient construction methods, reduce lateral pressure, The effect of pile length shortening

Active Publication Date: 2006-12-13
SHANGHAI INVESTIGATION DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] (1) The section of the cofferdam is large, seriously occupying the river course and affecting the discharge;
[0004] (2) A lot of earthwork is used, which is not conducive to environmental protection;
[0005] (3) It is often limited by the bearing capacity of the foundation, and it must be loaded in stages, limiting the loading rate, and cannot be constructed quickly;
[0006] (4) The underwater fill cannot be compacted and the reliability is low
[0009] (5) Usually the steel sheet pile cofferdam needs two rows of steel tie rods up and down, and the lower row of steel tie rods is generally constructed underwater, which is difficult to construct and has a long construction period

Method used

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  • Water-retaining cofferdam structure and construction method thereof
  • Water-retaining cofferdam structure and construction method thereof

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Embodiment Construction

[0028] Below in conjunction with figure, the present invention will be further described by a specific embodiment:

[0029] The water retaining cofferdam structure of the present invention comprises:

[0030] Two rows of piles 1, the piles are fixedly arranged on the foundation, which are specifically steel sheet piles, and the piles can be arranged continuously or discontinuously;

[0031] At least two purlins 2 are respectively fixedly connected to the transverse direction of the row of piles for further strengthening the piles. In a specific embodiment, the purlin and the pile are fixedly connected by bolts, and the connection strength of the bolt is not lower than the strength of the purlin itself;

[0032] At least one row of upper steel tie rods 3 fixedly connected between the two rows of piles for further reinforcing the piles;

[0033] The two rows of piles 1, purlins 2, and upper steel tie rods 3 are fixedly connected to form a three-dimensional frame structure;

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Abstract

The invention relates to a water retaining coffer structure, which comprises two rows of posts; at least two coffers connected to each transverse direction of one row of posts; at least one row of upper steel drawing rod connected between two rows of posts. Wherein, said posts, coffers, and upper steel drawing rods form the solid frame; and the long blow stuff is filled with soil to be fixed into the frame. The invention has easy application.

Description

technical field [0001] The invention belongs to temporary engineering in water conservancy (river) engineering, and in particular relates to a water retaining cofferdam structure and a construction method thereof. Background technique [0002] Before the construction of water conservancy (river) projects that require dry land construction, construction water retaining cofferdams must be set up to form foundation pits. Currently commonly used cofferdam structure types include soil (or bagged soil) cofferdam and steel sheet pile (inner backfill soil) cofferdam. When the water level is high and the geological conditions are poor, if earth cofferdams are used: [0003] (1) The section of the cofferdam is large, seriously occupying the river course and affecting the discharge; [0004] (2) A lot of earthwork is used, which is not conducive to environmental protection; [0005] (3) It is often limited by the bearing capacity of the foundation, and it must be loaded in stages, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/04
Inventor 林玉叶熊江平金勇郭久贤刘垒
Owner SHANGHAI INVESTIGATION DESIGN & RES INST
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