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Cofferdam hoisting and lowering construction device and cofferdam hoisting and lowering construction method

A construction device and construction method technology, applied in the direction of lifting devices, infrastructure engineering, construction, etc., can solve the problems of easy safety accidents, accidental breakage of steel strands, and safety accidents of steel strands, so as to improve construction safety sexual effect

Active Publication Date: 2021-06-18
HUANGHE ENG BUREAU HENAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a cofferdam hoisting and lowering construction device to solve the technical problem in the prior art that the steel strands are accidentally broken when the steel strands are used for hoisting and lowering the cofferdam; at the same time, the invention also provides A cofferdam hoisting and lowering construction method to solve the technical problem in the prior art that the steel strands are accidentally broken when the steel strands are used to hoist the cofferdam and cause safety accidents

Method used

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  • Cofferdam hoisting and lowering construction device and cofferdam hoisting and lowering construction method
  • Cofferdam hoisting and lowering construction device and cofferdam hoisting and lowering construction method
  • Cofferdam hoisting and lowering construction device and cofferdam hoisting and lowering construction method

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specific Embodiment 1

[0047] Such as Figure 1 to Figure 6 As shown, the cofferdam hoisting and lowering construction device in this embodiment corresponds to the layout of the construction platform. The construction platform includes a trestle 2 and a steel pipe pile 1. fixed.

[0048] The above-mentioned construction device includes a steel casing 3, a hanger is fixedly supported above the steel casing 3, a jack (not shown in the figure) is fixedly installed on the hanger, and the jack is hoisted by a lifting rope 7 to lower the corresponding bottom cofferdam segment 8. The suspension rope 7 is hoisted and connected to the bottom cofferdam segment 8 .

[0049] to combine figure 1 and figure 2 As shown, there are six steel casings arranged in two rows along the front and rear directions, and three steel casings 3 are arranged in each row along the left and right directions. Correspondingly, the hanger here includes a distribution beam 4 and a Bailey beam 5. There are two distribution beams 4 ...

specific Embodiment 2

[0063] The difference between the cofferdam hoisting and lowering construction device in this embodiment and the above-mentioned construction device embodiment 1 mainly lies in that the steel casing in embodiment 1 is used as a fixed foundation to support and cooperate with the corresponding upper support nuts, and then formed by supporting threaded steel suspenders. Redundant protection, in this embodiment, such as Figure 7 and Figure 8 As shown, on the distribution beam 4, on the opposite sides of each steel casing 3, a boom support structure 17 is respectively provided. Corresponding perforations are provided on the support backing plate 171 for the threaded steel bar suspender 10 to pass through, and the support backing plate 171 is used to support and cooperate with the upper support nut 172 screwed on the threaded steel bar suspender, so as to realize the Support assembly for threaded steel booms.

[0064] Of course, in this embodiment, a Bailey beam 5 is also provid...

Embodiment 1

[0069] The construction method in this embodiment corresponds to a single-segment cofferdam. When lowering the cofferdam, the lower end of the suspension rope and several threaded steel suspenders are respectively connected to the cofferdam, and then water is injected into the wall compartment of the cofferdam, and the jack passes through the cofferdam. Rope hoisting and lowering the cofferdam to the set elevation. Before lowering, adjust the upper support nut on the threaded steel suspender by turning upwards according to the pre-lowering depth, so that the upper support nut and the corresponding fixed foundation that can support the upper support nut form a set The spacing is to ensure normal decentralization on the basis of redundant protection.

[0070] In this embodiment, on the basis of ensuring normal lowering, the descending height of the cofferdam segment when the suspension rope is accidentally disconnected is reduced as much as possible, and the above-mentioned setti...

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Abstract

The invention relates to a cofferdam hoisting and lowering construction device and a cofferdam hoisting and lowering construction method. The cofferdam hoisting and lowering construction device includes: a steel casing, a hanger, a jack and a suspension rope, and also includes several threaded steel bar booms, the lower end of which is used for It is connected with the hoisting of the cofferdam, and the upper support nut is screw-assembled on the threaded steel suspender, which is used to support on the corresponding fixed foundation when the cofferdam goes down to the set position with the corresponding threaded steel suspender, forming redundant Additional protection. When in use, both the suspension rope and the dry threaded steel boom are hoisted and connected to the cofferdam. When the suspension rope breaks accidentally, the cofferdam will drop with the threaded steel boom until the upper support nut is matched with the corresponding fixed foundation support. The fixed foundation hangs the cofferdam through the upper support nut and the threaded steel suspender to prevent the cofferdam from falling continuously. Equipped with lifting ropes and threaded steel booms, the threaded steel booms are used to form redundant protection to improve the safety of the entire cofferdam hoisting and lowering construction equipment.

Description

technical field [0001] The invention relates to the technical field of steel cofferdam construction in bridge engineering, in particular to a cofferdam hoisting and lowering construction device and a cofferdam hoisting and lowering construction method. Background technique [0002] During the construction of existing bridges, one of the key issues is the construction of caps in water. Therefore, steel cofferdams with bottoms are widely used. Steel cofferdams with a bottom are mainly used for the construction of bridge caps in water. After the pile foundation construction is completed, the steel cofferdams are installed and lowered, and the bottom sealing concrete is poured. Concrete is poured to form the caps. [0003] During the construction of caps, the more important point is to hoist and lower the steel cofferdam. For caps with higher elevations, such as the steel box cofferdam structure and its construction method disclosed in the Chinese invention patent application w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D19/04B66F3/00B66F13/00
CPCB66F3/00B66F13/00E02D19/04
Inventor 孟北方曹为民乔惠平姚宇星秦国章韦佑科刘传章王延辉王学奇朱小超张永昌荆永学韦利军崔斌王小丽
Owner HUANGHE ENG BUREAU HENAN
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