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

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...

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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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