A formwork support method for cast-in-place dome roof

Abstract

The invention discloses a formwork support method for a cast-in-place dome roof, which comprises the following steps: matching formwork and retaining construction joints; both inner and outer formworks are prefabricated on site in the form of enlarged samples, assembled in sections, and the height of each section is determined according to the specifications of the plywood. The arc length of the concrete horizontal joint construction is consistent with the height of the outer formwork of the dome hemisphere; the outer formwork and the inner formwork are connected by tension bolts, and when each section of concrete is poured, the construction joints of certain specifications of wood are prevented; Formwork back flute; configure curved panel and formwork installation. In this method, both the inner and outer formwork are prefabricated on site in the way of enlarged sample, assembled in sections, the inner formwork is assembled and installed to the top at one time, the outer formwork and concrete are constructed in sections, and the formwork is used repeatedly. The method has the characteristics of low material loss, reusable use, simple assembly, fast construction speed, easy quality assurance, low construction cost and high safety.

Description

Technical field [0001] The invention relates to the technical field of construction, in particular to a method for supporting a dome formwork of a cast-in-place concrete structure roof. Background technique [0002] The cast-in-place concrete dome roof has been widely used at home and abroad in recent years. However, in this kind of modeling construction at home and abroad, the construction method of scattered plywood at the construction site is mostly used. This method is characterized by the difficulty of construction by workers, high cost, long construction period, and difficulty in quality assurance. The existing construction technology of this type of structure Generally, the construction method of on-site scattered plywood is used. First, the construction cost is high, the plywood saw is large, the material waste is large, and the material turnover is small; the second is the slow construction progress, the on-site scattered plywood, the labor intensity of workers, and the ...

AI Technical Summary

Problems solved by technology

However, in this kind of modeling construction at home and abroad, the construction method of loose plywood on the construction site is mostly used. This method is characterized by difficulty in construction, high cost, long construction period, and difficult quality assurance. Generally, the construction method of on-site loose plywood is adopted. First, the construction cost is high, the amount of plywood sawing is large, the material waste is large, and the number of material turnover is small; the second is that the construction progress is slow, and the on-site plywood is scattered. , it is not convenient for construction; the third is that the quality is difficult to guarantee, it is difficult to enlarge the sample on site, the joints of the formwork are not tight, and the quality of the concrete appearance is poor. If the construction joints and bolt holes are set according to the traditional method, structural leakage is prone to occur; the fourth is to use the traditional method construction, safety is difficult to guarantee, the traditional method has a long construction period, high difficulty of operation, and the concentrated load on the formwork support system