Underwater no-bottom closing concrete boxed cofferdam and method of use thereof

A technology of back-sealing concrete and its application method, which is applied in the direction of construction and infrastructure engineering, etc., can solve the problems such as difficult control of the construction quality of caps, elevation of the bottom of caps, and large amount of water work, so as to reduce the amount of water work and quality Control, quality and easy effects

Active Publication Date: 2008-04-09
SHANDONG HI SPEED QINGDAO HIGHWAY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has a long construction period, a large amount of work on the water, a large amount of materials, and the construction quality of the cap is difficult to...

Method used

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  • Underwater no-bottom closing concrete boxed cofferdam and method of use thereof
  • Underwater no-bottom closing concrete boxed cofferdam and method of use thereof

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Embodiment Construction

[0019] main structure design

[0020] As shown in Figure 1, the technical structure of this scheme is divided into two parts: permanent structure and temporary structure. Among them, the permanent structure part includes: concrete casing 1, anchor steel plate 9, water-stop capsule 7, etc.;

[0021] Concrete box 1 (reinforced concrete box) structure design and installation instructions:

[0022] The upper part of the columnar box is open, the bottom is provided with a box bottom, and the cylindrical box wall is closed; there is a gap between the inner wall of the box and the outer surface of the cap, and the height of the box is consistent with the size of the cap; the bottom of the box is reserved The number of holes is the same as the number of bored piles at the same pier position; pre-embedded bolts 11 used to connect the anti-wave plate are embedded on the top of the box wall, and water-stop airbag reserved grooves are set around the reserved holes at the bottom of the bo...

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Abstract

An underwater concrete boxed cofferdam without bottom sealing and an application method solves the shortcomings that the traditional steel cofferdam construction requires to pour thick concrete to seal the bottom; the consumption of steel material is large; the construction period is long; and the bearing platform quality is not easy to be controlled. The underwater concrete boxed cofferdam without bottom sealing is poured together with the concrete bearing platform; an upper part of the concrete boxed cofferdam is provided with a contemporary surf board cofferdam; and the surf board is dissembled after the concrete bearing platform is poured and completed. The concrete boxed cofferdam can be produced by factory prefabrication; the construction quality is easy to be controlled; the installation is convenient, simple and quick, which can accelerate the construction progress; the construction period is shortened reasonably and economically with reliability and safety; at the same time, the boxed cofferdam can play a seawater erosion prevention effect, which improves the durability of the engineering. The invention is mainly suitable for working in shallow water.

Description

Technical field: [0001] The invention relates to a key component used in the construction of an underwater high pile cap and an application method of the component in the construction of the underwater high pile cap. Background technique: [0002] At present, all underwater high pile caps at home and abroad adopt the traditional steel hanging box method. The steel hanging box cofferdam is a temporary water blocking structure designed for the construction of high pile caps in water. Its function is through the steel hanging box cofferdam. The side plate and the bottom plate block water, providing a dry construction environment without water for the construction of the platform cap. The steel hanging box construction needs to be processed and shaped in the processing factory first, and then transported to the construction site by a large ship or floating, and installed by a large floating crane. After the leakage, pour at least 1-2 meters thick underwater bottom-sealing concr...

Claims

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Application Information

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IPC IPC(8): E02D19/04E02D27/52E02D27/14
Inventor 姜言泉徐庆军李丕明侯福金蔡建军季辉王兆兴王广洋赵建铭吴继福王秀芬董支宝范效滨
Owner SHANDONG HI SPEED QINGDAO HIGHWAY
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