Construction method for synchronous dismantling of lower formwork frame system and peripheral formwork support of retractable post-pouring belt

Abstract

The invention discloses a construction method for synchronous dismantling of a lower formwork frame system and a peripheral formwork support of a retractable post-pouring belt. The construction methodcomprises the following steps that cambering is conducted according to the standard when beam end formworks on the two sides of the post-pouring belt are mounted; in-beam steel bars and in-plate steel bars are bound to form a steel bar frame; high-strength bolts are pre-embedded at the ends, at the in-beam steel bars, of the post-pouring belt, and the upper ends of the high-strength bolts stretchout of the upper side of the steel bar frame; concrete is poured, the beam tops are leveled before initial set of the concrete; after the concrete is cured to be qualified, steel structure bearing members are connected to the positions, on the two sides of the post-pouring belt, of the beam end top faces through the pre-embedded high-strength bolts; and the lower formwork frame system and the peripheral formwork support of the post-pouring belt are dismantled. In the construction process of beams and floors on the two sides of the retractable post-pouring belt, the structure bearing members are mounted in the positions, on the two sides of the post-pouring belt, between the beam end top faces through the pre-embedded high-strength bolts, the structure bearing members replace original structural beams to bear the shearing force and torque at the post-pouring belt, and therefore, when the peripheral formwork support of the post-pouring belt is dismantled, the lower formwork frame systemof the post-pouring belt can be dismantled synchronously.

Description

Technical field [0001] The invention belongs to the field of building construction, in particular to a construction method in which a lower formwork system of a telescopic post-cast belt and a peripheral supporting formwork are simultaneously removed. Background technique [0002] According to the requirements of current relevant codes, when the concrete strength of the floor slab reaches the mold removal strength, the lower support formwork of the floor slab can be removed, and the post-casting belt should be closed after the main structure is completed for 60 days and the settlement is stable. Therefore, the lower formwork system of the post-pouring belt must be retained, and cannot be removed together with the lower support formwork of the surrounding floor slab, nor should it be dismantled and then topped, so as to avoid uneven settlement and affect the structural safety. [0003] The dismantling time of the lower formwork system of the post-cast belt and the lower support form...

AI Technical Summary

Problems solved by technology

[0006] (3) The formwork system under the post-pouring belt is not dismantled in time, occupying space, seriously affecting the horizontal transportation of materials on the same layer, and also affecting construction safety and civilized construction image

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