Large-altitude-difference variable-section concrete structure construction joint and construction method thereof

Abstract

The invention discloses a large-altitude-difference variable-section concrete structure construction joint and a construction method thereof. The construction joint is used for construction of a large-altitude-difference variable-section concrete structure, and comprises an upper layer structure and a lower layer structure. The upper layer structure and the lower layer structure are respectively provided with staggered edges, and vertical inserting ribs are arranged between the staggered edges of the upper layer structure and the staggered edges of the lower layer structure. The construction method comprises the steps that concrete is poured to the lower layer structure and poured to the bottoms of the openings of the staggered edges, the vertical inserting ribs are horizontally and evenly embedded in the lower layer structure, staggered edge opening hanging formworks are arranged on the lower layer structure, concrete is poured to staggered edge openings, and construction of the large-altitude-difference variable-section concrete structure construction joint is completed. The relative sliding problem of structures at the large-altitude-difference variable-section concrete structure construction joint can be solved, the construction joint arranging method is simple, and construction operation is convenient and quick; concrete is poured twice, the upper layer structure and the lower layer structure can be constructed in a flow construction mode, and cracks due to the fact that the thickness of concrete poured one time is too large are effectively avoided.

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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