Sequence construction method for large area reinforced concrete floors

Abstract

The invention discloses a sequence construction method for large area reinforced concrete floors. According to construction, areas with length and width which are both less than 50m are numbered one by one along any direction, plate steel bars can be sequentially bound one after another based on a construction arrangement, a concrete casting is performed in a sequence mode, an ordinary construction joint processing method is utilized between a 9m laminate block and a 15m laminate block, each side of each plate construction joint is provided with a 'rapid and easy setback grid' the plate steel bars are constructed according to a normal plate steel bar binding method, a disconnecting process is absent, a concrete pouring utilizes a construction method of 'one inclined plane, a continuous pouring, one-time reaching top', a concrete inclined plane slope is 1:6, before an initial setting of the concrete, the surface of the concrete is subjected to a rolling by an iron roller, and the concrete is flatly rubbed at least three times by a wood float after the concrete is hardened. The method has the advantages that the cracking effect can be effectively controlled, the construction is convenient, the construction period is shortened, the cost is reduced, and the quality is reliable.

Description

technical field [0001] The invention belongs to the technical field of floor slab hopping construction technology, and in particular relates to a construction method for pouring concrete by hopping on a large-area reinforced concrete floor, that is, to a construction method for large-area reinforced concrete slab hopping. Background technique [0002] For structures such as retaining walls and basement walls, the "Code for Design of Concrete Structures" (GB50010-2002) stipulates that the maximum distance between expansion joints (indoor or in the soil) is 30m. Leaving expansion joints is not only troublesome, but also prone to water leakage and unfavorable for earthquake resistance. Many engineering practices have shown that it is effective to use post-construction pouring belts to control early shrinkage cracks of concrete without setting permanent expansion joints, and it has been incorporated into relevant design and construction specifications and regulations. For the c...

AI Technical Summary

Problems solved by technology

The disadvantages of the current conventional method of setting post-casting belts are: ①For buildings with large length and width, it is not only troublesome to set up post-casting belts (long retention time), but also easy to cause water leakage and unfavorable for earthquake resistance; The pouring belt is left for a long time, and a lot of construction waste inevitably falls into the belt, and the cleaning work is very difficult. If it is not cleaned up, the project quality will be affected; ③ Since the post-casting belt is left for a long time, waterproof measures must be taken to protect the The construction brings a lot of inconvenience and affects the construction progress; ④ Before pouring concrete in the post-casting belt, the original concrete surfaces on both sides of the post-casting belt must be cleaned to ensure reliable bonding of the new and old concrete. This process is troublesome in construction; the post-casting belt is often Concrete mixed with expansive agent is very important to maintain. It needs to be fully watered and saturated for two weeks. Otherwise, two fine cracks will easily form in the joint, causing hidden dangers of water leakage.

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