Construction joints and construction methods of concrete structures with large height difference and variable cross-section

A concrete structure with variable cross-section technology, which is applied in water conservancy projects, sea area projects, building structures, etc. It can solve the problems of high construction risk, difficulty in formwork reinforcement, and large concrete thickness, etc., and achieves convenient construction operations and simple laying methods , The effect of speeding up the construction

Active Publication Date: 2016-06-29
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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Problems solved by technology

[0003] In order to solve the problems of slow one-time continuous construction progress, difficulty in formwork reinforcement, high construction risk, and easy cracks due to large thickness of poured concrete, the invention provides a fast construction speed, good quality, simple construction method, and guaranteed construction safety. And it can effectively avoid the construction joints and construction methods of concrete structures with large height differences and variable cross-sections that are prone to cracks due to the large thickness of poured concrete at one time

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  • Construction joints and construction methods of concrete structures with large height difference and variable cross-section

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Embodiment Construction

[0022] Such as figure 1 As shown, the construction joint of the concrete structure with large height difference and variable cross-section of the present invention is composed of the lower structure 3, the upper structure 4, the construction joint 1 between the upper and lower structures and the vertical reinforcement 2 between the horse teeth.

[0023] The upper structure 4 and the lower structure 3 are respectively provided with a horse-toothed bar 1 and a vertically inserted bar 2 is buried between the upper structure 4 and the lower structure 3, and the vertically inserted bar 2 is preferably a HRB335 steel bar with a diameter of 12mm. , the vertical steel bars 2 are used to make the connection between the upper structure 4 and the lower structure 3 more firm, and the upper structure 4 and the lower structure 3 formed correspondingly. It is convenient to connect the 4 horse-toothed chasms in the upper structure and the 3 horse-toothed chasms in the lower structure.

[002...

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Abstract

The invention discloses a construction joint of a concrete structure with a large height difference and variable cross-section and a construction method thereof, which is used for the construction of a concrete structure with a large height difference and variable cross-section, and comprises an upper structure and a lower structure, and the upper structure and the lower structure are respectively provided with horse teeth , There are vertical ribs between the upper structure of the horse teeth and the lower structure of the horse teeth. The construction method of the present invention includes: pouring concrete into the lower structure, pouring the concrete to the bottom of the Ma Ya Cha Cha mouth; Yachachakou concrete; construction joint construction of large height difference variable cross-section concrete structure completed. The invention can solve the problem of relative slippage of the structure at the construction joint of the concrete structure with large height difference and variable cross-section; the construction joint setting method is simple, and the construction operation is convenient and fast; the concrete is poured twice, and the upper structure and the lower structure can be constructed in flowing water, effectively Avoid cracks caused by excessive thickness of poured concrete at one time.

Description

technical field [0001] The invention relates to a construction joint and a construction method thereof, in particular to a construction joint of a concrete structure with a large height difference and variable cross-section and a construction method thereof. Background technique [0002] At present, the construction of concrete structures with large height difference and variable cross-section often adopts a one-time continuous construction method, that is, the steel bars of the upper and lower structures are bound first, and then the concrete is poured together. This kind way has several shortcoming and is: one, because the steel bar of upper and lower structure must be all tied up before concrete pouring, influence construction progress. 2. Since the formwork reinforcement system at the variable cross-section has no concrete surface as a support point, it is difficult to reinforce the formwork and is more dangerous. 3. The thickness of the concrete at the height differenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/682E02B3/16
Inventor 杜福祥徐凯周佳军袁渊方道伟
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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