Construction method of steel sheet pile cofferdam for integral type steel purlin

A technology of steel sheet pile cofferdam and construction method, which is applied in basic structure engineering, construction, etc., can solve the problems of difficult quality assurance, difficult construction, long period, etc., achieve obvious energy saving effect, reduce construction difficulty, and reduce permanent construction. effect of steel

Inactive Publication Date: 2010-09-22
CHINA RAILWAY SIXTH GROUP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In order to solve the problems that the conventional construction of steel sheet pile cofferdams is not easy to guarantee the quality, the ...

Method used

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  • Construction method of steel sheet pile cofferdam for integral type steel purlin
  • Construction method of steel sheet pile cofferdam for integral type steel purlin
  • Construction method of steel sheet pile cofferdam for integral type steel purlin

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Embodiment Construction

[0034] The specific embodiment of the present invention will be further described in conjunction with the accompanying drawings.

[0035] The construction method of integral steel purlin steel sheet pile cofferdam, the specific steps are as follows:

[0036] Step 1: 1. Fabricate steel purlins on land as a whole.

[0037] Step 2: 1. Use a grab bucket and a suction dredger to clear the riverbed below the steel purlins. 2. Use a floating crane to lower the steel purlins as a whole. 3. The steel purlins are consolidated on the four corner pile casings.

[0038] Step 3: 1. Using steel purlins as guides, insert and drive steel sheet pile cofferdams around the site. 2. Under the condition that the internal and external water heads are consistent, suck up mud and clean the river bed to the bottom of the back-sealing concrete. 3. Construction of back-sealing concrete.

[0039] Step 4: 1. Pump water from the foundation pit, remove the steel casing and break the pile head, 2. Set up a t...

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Abstract

The invention belongs to the technical field of the construction method of steel sheet pile cofferdams, and particularly relates to a construction method of a steel sheet pile cofferdam for an integral type steel purlin, which solves the problems of difficult guarantee of quality, large construction difficulty and long construction period in the conventional construction of the conventional steel sheet pile cofferdam. The construction method is characterized in that the steel purlin is prefabricated integrally, and then is transferred to a lower level through a floating crane. The construction method has the advantages that 1, the steel purlin is manufactured integrally on the land to reduce the construction working procedures in channels, and underwater construction is changed into land construction to reduce the construction difficulty and ensure the construction quality; 2, cushion cap concrete is poured hierarchically to convert a support stressed system, the working procedures are clear and controlled, and the safety of deep foundation construction in water is ensured effectively; 3, the effect of rejected materials generated in the process of the use and maintenance of construction machines on the channels is reduced, and the requirement of environmental protection is met; and 4, in the construction of the steel sheet pile cofferdam, steel sheet piles and inner support purlins are returnable materials, so that permanent construction steel is reduced effectively, and the effect of energy conservation is obvious.

Description

technical field [0001] The invention belongs to the technical field of steel sheet pile cofferdam construction methods, and in particular relates to an integral steel purlin steel sheet pile cofferdam construction method. Background technique [0002] Normally, steel sheet pile cofferdams are used when building caps in water. The conventional construction of the steel sheet pile cofferdam is to insert the steel sheet pile first, and then set the inner supporting purlins layer by layer. The general steps are as follows: [0003] Step 1: 1. Use the bored pile casing to set the corbels, 2. Construct the first layer of steel purlins, 3. Guided by the first layer of steel purlins, insert and drive steel sheet piles; [0004] Step 2: 1. After the steel sheet piles are inserted and driven, remove the guide ring and excavate the outer side of the steel sheet piles according to a 1:1 slope, and the inner side excavation (dredging) to the height of the second layer of purlins is not ...

Claims

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Application Information

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IPC IPC(8): E02D19/04
Inventor 侯建杰李勇黄枝花聂海岩雷廷新王民焕高军庭张卫东
Owner CHINA RAILWAY SIXTH GROUP
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