Thin-wall hollow high pier reinforcing steel bar formwork support and construction method

Abstract

The invention provides a thin-wall hollow high pier reinforcing steel bar formwork support which comprises three square reinforcing steel bar plates arranged in parallel at certain intervals from highto low, uprights vertically connected with corresponding end points of the three reinforcing steel bar plates, reinforcing steel bar hoop frames horizontally tied to the uprights, and oblique reinforcing steel bars connecting the top ends of vertical reinforcing steel bars with the bottom ends of the adjacent vertical reinforcing steel bars, wherein reinforcing steel bar holes for the reinforcingsteel bars to pass through are vertically correspondingly formed in the three reinforcing steel bar plates. A provided construction method of the thin-wall hollow high pier reinforcing steel bar formwork support includes the steps that (1) the size is designed according to the size of a thin-wall hollow high pier; (2) the thin-wall hollow high pier reinforcing steel bar formwork support is manufactured; (3) the reinforcing steel bar formwork support is transported to the site; (4) the reinforcing steel bar formwork support is pre-buried in a bearing platform; (5) the bearing platform is poured; (6) a pier column formwork is installed; and (7) a pier column is poured. The thin-wall hollow high pier reinforcing steel bar formwork support has the beneficial effects of being simple in structure, low in manufacturing cost, capable of saving time and labor, high in production efficiency and capable of improving the tying quality of the reinforcing steel bar formwork support and guaranteeingthe construction quality.

Description

technical field [0001] The invention relates to a steel bar formwork support and a construction method, in particular to a thin-walled hollow high pier steel bar formwork support and a construction method. Background technique [0002] Expressways develop towards mountainous areas, and there are more and more bridges crossing mountains and rivers and reservoirs. Due to the terrain, the piers are relatively high, so they are often designed as high piers and thin-walled hollow piers, and the steel bar binding installation and construction of towering thin-walled hollow piers are constructed by the overturning method. There is a problem. Because there are two conventional construction methods: one is to build a steel pipe support around the pier column, which is also a working platform for going up and down stairs and installing steel bars, and the steel pipe support set up should be higher than the height of the steel bar installed each time, and then in the middle of the supp...

AI Technical Summary

Problems solved by technology

Because there are two conventional construction methods: one is to build a steel pipe support around the pier column, which is also a working platform for going up and down stairs and installing steel bars, and the steel pipe support set up should be higher than the height of the steel bar installed each time, and then in the middle of the support, That is, the position of the thin-walled hollow pier is connected with steel pipes in the vertical and horizontal directions to form a well-shaped shape, that is, the net size of the outer periphery of the steel bar, and then the binding steel bar is installed. The protective layer of the steel bar in this method is not easy to control, the construction time is longer, the cost is higher, and there is safety. Hidden dangers; another method is to set up steel pipe well-shaped simple supports along the sides of the formwork each time, and then lay wooden squares in the well-shaped support as a construction work platform, and then install binding steel bars. It needs to be removed and installed every time the formwork is turned over The cycle process of this method is difficult to control the steel protection layer, the labor cost is high, and there are potential safety hazards

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