High-pier small-radius curve ramp bridge cast-in-place platform bailey beam bundle construction method

Abstract

The invention belongs to the technical field of constructional engineering construction, and discloses a high-pier small-radius curve ramp bridge cast-in-place platform bailey beam bundle constructionmethod which comprises the steps that preparation is conducted before construction, and a support platform is arranged; a bridge support system is measured and positioned; steel pipe column and distribution and bracket supporting system construction is conducted; a bailey beam bundle platform is constructed; a transverse distribution beam is placed on the bailey beam, the side boundary of the webplate on the transverse distribution beam is measured and marked; according to the arrangement of the cross sections of the bowl buckle supports, the bowl buckle supports are erected from the web densification position to the two sides, and the adjacent arrangement distance of the cross sections is changed if the side lines of webs are exceeded; the non-encryption sections are arranged to form the outer contour of the bowl buckle support and the web plate encryption part and are in a sawtooth shape; a simulation load test is carried out, pouring is carried out, and the bridge permanent prestress construction is carried out; and the platform is detached. The cost can be effectively reduced, the temporary structure safety is ensured, the practicability is high, and the good application andpopularization value is achieved.

Description

technical field [0001] The invention belongs to the technical field of building engineering construction, and in particular relates to a construction method for Bailey beam beams of a cast-in-situ platform of a high-pier small-radius curved ramp bridge. Background technique [0002] Currently, the closest prior art: [0003] With the continuous and rapid advancement of my country's infrastructure construction, bridge engineering construction technology is changing with each passing day. In the construction of municipal bridges and tracks, it is not uncommon to encounter situations where the radius of the curve is small, the height of the pier column is high, and obstacles need to be crossed, such as overpass ramps and bridges on curved elevated bridges. During construction, the pier height often reaches more than 10m, and a leaping cast-in-place platform is generally used. The support columns in the spanning cast-in-place platform currently adopt more structural forms as s...

AI Technical Summary

Problems solved by technology

[0005] To sum up, the problems existing in the existing technology are: when erecting the platform of the existing high-pier curve small-radius beam body, due to the Bailey beam modulus and beam length, the component installation is complicated, the layout is difficult, the cost is large, and the construction cost is high. The difficulty of operation is greatly increased

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