Construction method of post-cast strip area and floor area supporting systems on two sides of post-cast strip area

Abstract

The invention belongs to the technical field of building structures, and particularly relates to a construction method for preventing sedimentation and cracking of floors on two sides of a post-cast strip. The construction method comprises the following steps: 1) positioning and setting out; 2) assembling uprights; 3) assembling horizontal poles; 4) assembling vertical bridgings; 5) mounting adjustable brackets; 6) mounting main steel pipe ridges; 7) mounting secondary square timber ridges; 8) paving beam and slab molds; 9) assembling reinforcement; 10) separating the post-cast strip; 11) concreting; 12) assembling an upper layer upright supporting system; 13) removing the molds and the supporting system. Load born by a post-cast strip area supporting system is defined according to the practical working condition, and the supporting system is assembled after scientific design and checking calculation, so as to ensure the structural safety of the floors on the sides of the post-cast strip; the post-cast strip area supporting system is arranged to be an independent bearing system, and is in a compressive pre-stress state under the action of construction load during concreting, so as to eliminate rigid deformation of the floors; the method is economical, reasonable, safe and reliable, and meets the requirements of energy conservation, environmental protection and green construction.

Description

Technical field [0001] The invention relates to a construction method of a post-pouring zone area and a floor area support system on both sides thereof, and belongs to the technical field of building structures. Background technique [0002] In recent years, building structures have generally developed in the direction of overlength and oversize. In order to prevent structural temperature cracking, it has become a common practice to leave a full-height temperature post-pouring belt from the foundation to the main structure. However, the post-pouring zone regional support system will inevitably remove the floor formwork support system after the first floor concrete reaches the design strength. Only the post-pouring zone regional support system will be retained, or even the post-pouring zone regional support system will be installed after the entire removal. Under this working condition, the floor of the post-pouring zone regional support system is in a simply supported state. Whe...

AI Technical Summary

Problems solved by technology

Under this working condition, the floor of the post-pouring zone support system is in a simply supported stress state. When the upper floor continues to be constructed, the traditional method is designed according to the construction load of the first floor. The construction load of two floors and above is often caused by the floor settlement and cracking caused by compression deformation, which seriously reduces the safety and durability of the structure, and has become an urgent technical problem to be solved.

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