Integrated formwork system for cast-in-place of cantilever window sill in secondary structure and formwork supporting method

Abstract

The invention discloses an integrated formwork system for cast-in-place of a cantilever window sill in a secondary structure and a formwork supporting method. The problems that as for an existing formwork system, a secondary structure wall is destroyed seriously, and the formwork reuse rate is low are solved. Reserved bolt holes of a primary structure wall of a high-rise building are fully utilized, an overall support triangular frame for cast-in-place of window sill concrete is manufactured, the bottom end of the overall support frame is supported on screws inserted into the reserved bolt holes of the primary structure wall, the top of the overall support frame is fixed to a floor through iron wire traction, and the overall support frame is connected to the secondary structure wall outside a window opening in an abutting mode; and steel angles serve as an outer side formwork and an edge side formwork of the window sill, the outer side formwork and the edge side formwork of the steel angles are connected to the overall support frame in a threaded mode through bolts, after a to-be-poured formwork is solidified, the bolts are demounted, the formwork is removed, and the overall support frame is taken back from the window opening for reutilization; and holes do not need to be drilled in the wall, the wall is protected, and the reuse efficiency of the formwork is further improved.

Description

technical field [0001] The invention relates to a formwork system for cast-in-place cantilevered window sills, in particular to a pouring formwork system for cast-in-place window sills in the secondary structure of high-rise buildings and a supporting method thereof. Background technique [0002] For the civil construction of high-rise buildings, the primary structure is generally completed first, and then the secondary structure construction is carried out; during the secondary structure construction, the formwork and pouring work of the cantilevered window sill is carried out; the functions of the cantilevered window sill are as follows: (1 ) The window sill plate is also called the window sill top plate, which can reduce or avoid the wall cracks caused by stress concentration; (2) The window sill top plate can prevent external rainwater from entering the room and protect the strength of the lower wall; During on-site construction, the formwork support and fixation of the ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an integrated formwork system and formwork support method for cast-in-place cantilevered window sills with secondary structures, which solves the technical problems of serious damage to secondary structure walls and low formwork reuse rate existing in existing formwork systems

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