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A bridge pier construction cofferdam structure

A technology for cofferdams and bridge piers, applied in infrastructure engineering, bridges, bridge construction, etc., can solve problems such as unfavorable construction, elongated construction period, and construction cost addition, and achieves less deformation, increased safety, and structural stability enhanced effect

Active Publication Date: 2018-09-21
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of working process not only requires large-scale lifting equipment, but also has the problem of being difficult to accurately sink and locate
If the sub-blocks sink and then close together to form a cofferdam, there will be poor handling of the gaps at the close, and leakage accidents will often occur
[0009] The cofferdams in the prior art mostly use U-shaped steel sheet piles for splicing, and the U-shaped steel sheet piles are connected to form a cofferdam. However, the sealing connection performance of the steel sheet piles is poor, and the joints are mainly blocked by sand and gravel. To the airtight anti-leakage effect
Therefore, the anti-leakage effect of the cofferdam spliced ​​with U-shaped steel sheet piles is poor
[0010] At the same time, U-shaped steel sheet piles need to install supporting devices inside the cofferdam formed by them. Generally, three layers of supporting devices, upper, middle and lower, need to be installed. Too many supporting devices make the construction space inside the cofferdam very small. Conducive to construction
In the process of construction, it is necessary to constantly adjust and remove the supporting devices, which makes the construction more complicated and the construction period is correspondingly elongated. Moreover, due to the need to use a large number of supporting devices, the construction cost has also been correspondingly added.

Method used

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  • A bridge pier construction cofferdam structure
  • A bridge pier construction cofferdam structure
  • A bridge pier construction cofferdam structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: A bridge pier construction cofferdam structure, the bridge pier construction cofferdam structure includes a cofferdam panel 1 with an arc-shaped structure; the cofferdam panel 1 includes a cofferdam left side wall 9 and a cofferdam right side wall 8 and an equal pressure cavity 7; the equal pressure cavity 7 is located between the left side wall 9 of the cofferdam and the right side wall 8 of the cofferdam; the equal pressure cavity 7 runs through the cofferdam panel 1; the cofferdam The left side of the left side wall 9 is provided with a lock 4 with a diamond-shaped cross section; the lock 4 is fixedly welded to the central position of the left side wall 9 of the cofferdam through the left vertical ribs 5 parallel to each other; 8 is provided with a buckle groove 3 with a diamond-shaped cross section; the cross-sectional area of ​​the buckle groove 3 is greater than that of the lock buckle 4; the inside of the buckle groove 3 is provided with a rubber pad...

Embodiment 2

[0029] Embodiment 2: A kind of cofferdam structure of pier construction, it is characterized in that, described cofferdam structure of pier construction comprises the cofferdam panel 1 of arc-shaped structure; Described cofferdam panel 1 comprises cofferdam left side wall 9, cofferdam The right side wall 8 of the weir and the equal pressure cavity 7; the equal pressure cavity 7 is located between the left side wall 9 of the cofferdam and the right side wall 8 of the cofferdam; the equal pressure cavity 7 runs through the cofferdam wall plate 1; The left side of the left side wall 9 of the cofferdam is provided with a lock 4 with a rhombic cross section; the lock 4 is fixedly welded to the central position of the left side wall 9 of the cofferdam through the left vertical ribs 5 parallel to each other; The weir right side wall 8 is provided with a buckle groove 3 with a rhombic cross section; the cross-sectional area of ​​the buckle groove 3 is greater than that of the lock butt...

Embodiment 3

[0031] Embodiment 3: A kind of cofferdam structure of pier construction, it is characterized in that, described cofferdam structure of pier construction comprises the cofferdam panel 1 of arc-shaped structure; Described cofferdam panel 1 comprises cofferdam left side wall 9, cofferdam The right side wall 8 of the weir and the equal pressure cavity 7; the equal pressure cavity 7 is located between the left side wall 9 of the cofferdam and the right side wall 8 of the cofferdam; the equal pressure cavity 7 runs through the cofferdam wall plate 1; The left side of the left side wall 9 of the cofferdam is provided with a lock 4 with a rhombic cross section; the lock 4 is fixedly welded to the central position of the left side wall 9 of the cofferdam through the left vertical ribs 5 parallel to each other; The weir right side wall 8 is provided with a buckle groove 3 with a rhombic cross section; the cross-sectional area of ​​the buckle groove 3 is greater than that of the lock butt...

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PUM

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Abstract

The invention relates to the field of cofferdams, in particular to a bridge pier construction cofferdam structure. A round cofferdam is formed by connecting a plurality of cofferdam wall plates of an arc structure left and right in a surrounding mode. The left side walls and the right side walls of the cofferdam wall plates are subjected to deformation design and connected through rhombus buckles, a rubber pad with a triangular section is arranged on the inward side of the right side wall of each cofferdam wall plate, the size of the round cofferdam formed by the cofferdam wall plates in the surrounding mode is adjusted, the sealing performance of the cofferdam is improved, and leakage is avoided.

Description

technical field [0001] The invention relates to the field of cofferdams, in particular to a cofferdam structure for bridge pier construction. Background technique [0002] Cofferdam refers to the temporary enclosure structure built for the construction of permanent water conservancy facilities in the construction of water conservancy projects. Its function is to prevent water and soil from entering the construction site of the building, so as to drain water in the cofferdam, excavate the foundation pit, and build the building. Generally, it is mainly used in hydraulic construction. Except as a part of formal buildings, cofferdams are generally removed after use. The height of the cofferdam is higher than the highest water level that may occur during the construction period. [0003] In bridge foundation construction, when bridge piers and abutment foundations are below the surface water level, various forms of earth weirs can be built according to local materials; in river...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04E01D21/00
CPCE01D21/00E02D19/04
Inventor 娄荣
Owner ZHEJIANG OCEAN UNIV