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Overall construction method for belt straining beam dumbbell-shaped pile cap steel hoisting box cofferdam under complex sea conditions

An integral construction, steel hanging box technology, applied in infrastructure engineering, protection devices, construction, etc., can solve problems such as high cost and difficult beam back cover, save construction period and procedures, and speed up construction progress.

Pending Publication Date: 2018-08-21
CCCC FIRST HIGHWAY XIAMEN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structural bottom elevation of the tie beam cap platform is inconsistent, and it is difficult to seal the bottom of the tie beam, and it is necessary to add 2 steel casings and concrete for the bottom sealing of the tie beam, which is costly

Method used

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  • Overall construction method for belt straining beam dumbbell-shaped pile cap steel hoisting box cofferdam under complex sea conditions
  • Overall construction method for belt straining beam dumbbell-shaped pile cap steel hoisting box cofferdam under complex sea conditions
  • Overall construction method for belt straining beam dumbbell-shaped pile cap steel hoisting box cofferdam under complex sea conditions

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Experimental program
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Embodiment Construction

[0034] refer to Figure 1-4 The overall construction method of steel suspension box cofferdam with tie-beam dumbbell-shaped cap under complex sea conditions shown includes two symmetrically arranged steel suspension boxes. The concrete layer 4, the cap layer 5 and four steel casings 3 evenly distributed on the bottom plate, two fish-belly truss beams 9 are arranged between the two steel hanging boxes, and the fish-belly truss beams 9 A height difference adjustment block 10 is provided under each of the two ends of the height difference adjustment block 10, and a pair of two-way corbels 11 are arranged under the height difference adjustment block 10, and the two-way corbels 11 are welded on the wall plate 1, and are connected with the The wall panels 1 are processed and formed together, and the front end of the two-way corbel 11 is poured into the inside of the sealing layer 4, and the tail end extends to the outside of the wall panel 1. The steel casing 3 is welded with a supp...

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Abstract

The invention discloses an overall construction method for a belt straining beam dumbbell-shaped pile cap steel hoisting box cofferdam under complex sea conditions and belongs to the technical field of bridge cushion cap construction. The device comprises two symmetrically arranged steel hoisting boxes, wherein the steel hoisting boxes comprise wall plates, bottom plates, inner supports and bottoming concrete layers; two fish-bellied type truss girders are arranged between two steel hoisting boxes; a height difference adjusting cushion block is respectively arranged below two ends of the fish-bellied type truss girders; a pair of two-way brackets is arranged below the height difference adjusting cushion block; the two-way brackets are welded on the wall plates; front ends of the two-way brackets stretch into the bottoming concrete; straining beam bottom plates are arranged above the fish-bellied type truss girders. A combination of the fish-bellied type truss girders and bottoming two-way brackets embedded into the wall plates is adopted for bearing the casting weight of the straining beam, non-bottoming construction of the straining beam can be realized, a steel casing does not need to be increased at the bottom of the straining beam, the straining beam and the pile cap are wholly subjected to one-step pouring construction, the subsequent construction period and process of thestraining beam can be saved, and the construction progress is greatly accelerated.

Description

technical field [0001] The invention relates to the technical field of bridge cap foundation construction, in particular to a method for the overall construction of a dumbbell-shaped cap steel box with tie beams under complex sea conditions. Background technique [0002] Under the complex sea conditions with large waves, the construction of the cap foundation has always been the most difficult point in the construction of offshore bridges. The huge wave force poses a great challenge to the stability of the steel hanging box structure, and for the belt tie between the two caps Beams, and the elevation of the bottom of the tie-beam cap is inconsistent, and it is difficult to seal the bottom of the tie-beam, and there is no pile foundation under the tie-beam to resist the horizontal force of waves, and the stability of the cofferdam of the tie-beam part is even more difficult. Moreover, the structure of the steel bars tied to the beams of the small-volume caps is complicated, a...

Claims

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Application Information

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IPC IPC(8): E02D27/14E02D19/04E02D31/02
CPCE02D19/04E02D27/14E02D31/02
Inventor 费志高卢磊王铁法黄宇王奎熊子多孟源黄亮李秋霜郝欣欣
Owner CCCC FIRST HIGHWAY XIAMEN ENG
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