Two-column pier and middle tie beam construction method employing integral movement of trusses

Abstract

The invention belongs to the technical field of bridge construction and provides a two-column pier and middle tie beam construction method employing integral movement of trusses. By means of the construction method, the problems that traditional turnover form construction and climbing form construction are slow in construction progress of high bridge piers, and slip form construction affects the surface quality of pier bodies and damages inherent quality of concrete are solved. A truss platform, lifting frames, an auxiliary platform, supporting rods, a hydraulic system and formwork systems are included. The truss platform comprises transverse trusses and longitudinal trusses. The transverse trusses on the inner side are detachably connected with the truss platform. An upper opening and a lower opening of the truss platform are provided with two layers of jackscrews. An upper main rib and a lower main rib of each truss are provided with jackscrew fixing devices. The lower portion of the truss platform is connected with the auxiliary platform. The lifting frames and the truss platform are connected into a whole. Each lifting frame is supported on the corresponding supporting rod through a jack installed on a cross beam of the lifting frame. The lower ends of the supporting rods are embedded in concrete. The upper ends of the supporting rods penetrate through through holes of the hydraulic jacks. A bridge pier and a middle tie beam are constructed synchronously and quickly, the construction period is shortened, cost is reduced, operability is high, the method is economical and reasonable, and good economic benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a method for integrally moving a double-column pier and a middle tie beam truss. Background technique [0002] With the continuous development of the economy, the infrastructure construction has been further accelerated, and domestic bridge construction is increasing, especially in mountainous areas. There are more and more construction projects. The technology of setting transverse beams between double-column bridge piers to increase the lateral stiffness of the piers is used in mountainous highway bridges. It has been widely used in construction. High piers are often encountered in bridge construction. In recent years, the height of piers has grown from 30 to 50 meters to over 100 meters. The construction of high piers in mountainous areas is often restricted by terrain and landform conditions. The construction of high piers urgently needs to be standard...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the obvious slow progress of the high pier of the bridge by using the traditional turning formwork and climbing formwork construction, the present invention adopts the sliding formwork construction, although the progress is fast, but due to the large friction force generated by the sliding between the concrete and the formwork, the pier body is affected. The surface quality will also damage the inner quality of the concrete. A method of integral mobile construction of double-column piers and middle tie beam trusses is provided.

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