Protective structure and construction method for crossing line in road and bridge extension construction

Abstract

The invention relates to a road bridge expansion construction line-crossing protection structure and a construction method of the protection structure and belongs to the technical field of road bridgeconstruction equipment. The road bridge expansion construction line-crossing protection structure comprises an existing road bridge with an anti-collision wall. Two supporting columns are arranged onone side of the existing road bridge and located on the two opposite sides of a crossed road section. A formed prefabricated crossbeam is transversely arranged between the supporting columns. An auxiliary frame is arranged on the side, close to the anti-collision wall, on the upper end face of the prefabricated crossbeam and arranged in the length direction of the prefabricated crossbeam. The cross section of the auxiliary frame is in a y shape. The end face, close to the anti-collision wall, of the auxiliary frame is attached to the anti-collision wall. The auxiliary frame fixedly connectedwith the prefabricated crossbeam is adopted for stopping slag materials falling, wooden boards and waterproof cloth in the prior art are saved, material use cost is reduced, the auxiliary frame and the prefabricated crossbeam are formed at the same time, the labor working procedure number of construction personnel is reduced, the outdoor workload of workers is reduced as well, and the work environment and the work condition of the workers can be improved.

Description

technical field [0001] The invention relates to the technical field of road and bridge construction equipment, in particular to a cross-line protection structure for road and bridge extension construction and a construction method thereof. Background technique [0002] In recent years, my country's infrastructure construction has developed rapidly, and the construction quality and total volume have been significantly improved. The achievements have attracted worldwide attention. With the improvement of the construction level, the humanization and high-efficiency construction requirements in the construction process have been realized. People also pay attention to the construction Some problems affecting the surrounding environment that emerged during the process put forward higher requirements. [0003] In the renovation construction across railways, bridges and other road sections, most of the existing technologies use cages made of steel bars as the supporting framework, an...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of high cost and complicated process caused by operation, the construction of mid-span line bridges in the prior art usually adopts the method of laying wooden boards and tarpaulins and then making mortar water retaining sills to protect the line-span bridges. The present invention provides road and bridge expansion construction The cross-line protective structure and its construction method use the auxiliary frame integrally formed with the prefabricated beam as the protective equipment between the existing road bridge structure and the expanded road bridge structure, which reduces the construction complexity, improves the construction efficiency, and reduces the construction cost

Images