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Construction method for prefabricating composite structure of pier mounting plate pile under open marine environment

A marine environment and combined structure technology, applied in the direction of foundation structure engineering, sheet pile walls, erection/assembly of bridges, etc., can solve problems such as large water flow force and wave force, thick silt layer, and failure to meet stability requirements, and achieve improvement The effect of construction efficiency, reducing the risk of offshore construction, and prolonging the time of offshore operations

Active Publication Date: 2013-01-02
CCCC SECOND HARBOR ENG
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AI Technical Summary

Problems solved by technology

In the unsheltered marine environment, the water flow force and wave force are large, and the silt layer is thick. The stability requirements cannot be met when the traditional steel sheet pile cofferdam is used for construction. The construction method of prefabricated piers and abutments with sheet pile composite structure is the key to bridge foundation construction

Method used

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  • Construction method for prefabricating composite structure of pier mounting plate pile under open marine environment
  • Construction method for prefabricating composite structure of pier mounting plate pile under open marine environment
  • Construction method for prefabricating composite structure of pier mounting plate pile under open marine environment

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0027] As shown in the figure, a construction method for prefabricated piers and abutments with sheet piles in an unsheltered marine environment includes the following steps:

[0028] 1) Drill the positioning pile 140 at the position of the positioning pile hole reserved in the fence 130, and then hoist the fence 130. The fence 130 has four layers, and each layer of the fence is positioned by the positioning pile 140;

[0029] 2) Use the enclosure spreader and the positioning system 230 to precisely adjust the enclosure 130 so that the enclosure 130 is in a horizontal state. Specifically: the upper end of the enclosure 130 is provided with an enclosure hanging ear 250, and the enclosure sling and adjustment system 230 is connected...

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Abstract

The invention discloses a construction method for prefabricating a composite structure of a pier mounting plate pile under an open marine environment. Layers of walings are arranged; cofferdams formed by steel plate piles are arranged at the peripheries of the walings, and prefabricated piers are hoisted in the cofferdams. Therefore, offshore construction risk can be reduced; the construction efficiency is improved; a dry construction environment is provided for pier installation and node concrete construction; installation of a prefabricated cushion cap is affected by stormy waves due to operation under the open marine environment; after the method is used, the offshore operation time can be effectively prolonged, and all-weather construction can be achieved.

Description

technical field [0001] The invention relates to the technical field of bridge foundation construction, in particular to a construction method for a combined structure of prefabricated piers and abutments installed with sheet piles under the limitation of unshielded marine environment conditions. Background technique [0002] With the rapid development of bridge construction, the bridge construction area is gradually expanding to the sea. Facing the natural environment such as changing marine climate and complex hydrological conditions, the construction unit proposes to adopt the construction technology of "standardized factory prefabrication and on-site installation and assembly" for piers and abutments. Optimized the installer. Therefore, when the cap is installed, it must pass through the cap steel casing at the same time, and after the cap is installed in place, the connection between the cap and the steel casing is made by pouring node concrete. In the unsheltered marin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E02D7/00E02D19/04E02D5/38E02D27/52
Inventor 张鸿罗自立彭强郭劲郑瑞杰龙祖惠程茂林林波袁灿周益军李清华
Owner CCCC SECOND HARBOR ENG
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