Outward sliding and inward overturning construction device and method for high bridge pier

Abstract

The invention relates to an outward sliding and inward overturning construction device for a high bridge pier and belongs to the field of bridge construction. The outward sliding and inward overturning construction device for the high bridge pier comprises a main formwork device, a hydraulic lifting device and lining formworks. The main formwork device comprises a face plate and a truss, and the face plate is fixedly installed on the inner wall of the truss. The hydraulic lifting device comprises a plurality of supporting rods and a plurality of hydraulic jacks, wherein the multiple supporting rods are all embedded in a concrete structure of the high pier in advance, the multiple hydraulic jacks correspond to the multiple supporting rods in a one-to-one mode, bases of the multiple hydraulic jacks are fixedly connected to the truss, and supporting claws of the multiple hydraulic jacks are fixedly connected to the multiple supporting rods. The multiple lining formworks are arranged on the surface of the concrete structure of the high pier. According to the outward sliding and inward overturning construction device and method for the high bridge pier, the mode that the lining formworks are arranged on the surface of the high pier is adopted so that the number of the formworks can be effectively reduced, construction cost can be reduced, the outer surface of the high pier can be effectively protected, and the appearance quality of the formed high pier can be guaranteed; and meanwhile, dismounting of the formworks is conveniently controlled, construction efficiency is effectively improved, and the construction period is shortened.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a construction device and method for high bridge pier sliding outside and turning inside. Background technique [0002] At present, the traditional construction methods of high bridge piers include overturning formwork, climbing formwork, sliding formwork and support method construction. [0003] Bracket construction is a traditional construction method, but it is generally only suitable for high piers of about 30 meters. At present, most of the high piers have reached more than 60 meters, and some are even more than 100 meters. It is impossible to erect supports. At the same time Construction safety cannot be guaranteed. [0004] Turnover construction of high piers is a traditional construction method, but as the height of high piers continues to increase, disadvantages such as slow construction progress and low safety are becoming more and more obvious. As the height of the...

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Problems solved by technology

[0004] The construction of high piers by turning over formwork is a traditional construction method, but with the continuous increase of the height of high piers, the unfavorable factors such as slow construction progress and low safety are becoming more and more obvious

As the height of the high pier increases, the construction cost of the tower crane is also increasing, the construction safety is further reduced, the construction efficiency is gradually reduced with the increase of the height, the construction cycle becomes longer, and it is difficult to ensure the progress of 1 meter per day on average. Overturned formwork construction is increasingly unable to meet the requirements of bridge development and efficient construction

[0005] Climbing formwork construction is an improvement to the overturned formwork construction technology, but the low construction efficiency is still the biggest constraint factor. Due to the age limit of concrete, its construction progress has not been significantly improved compared with the overturned formwork construction method. This construction method is widely used in domestic bridge construction. There is no large-scale promotion and use in construction

[0006] Sliding form construction is based on climbing formwork. Some improvements have been made, and the construction efficiency has been greatly improved. However, the relative movement between the formwork and the concrete may easily cause the surface of the concrete to be strained, and the appearance quality of the concrete is poor, which cannot meet the requirements of the appearance quality of modern bridges. Require

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