Transverse reinforcement construction method for simply supported double T-shaped beams of existing railway bridge

Abstract

The invention discloses a transverse reinforcement construction method for simply-supported double T-beams of an existing railway bridge. The transverse reinforcement construction method comprises the following steps that S1, a scaffold is erected, specifically, a construction platform is erected on the lower portion of a beam body through a full-length working scaffold; s2, steel bar detection and positioning drilling: marking out longitudinal and transverse lines by using an ink line or a ruler on a steel bar planting plane position, taking the intersection point of the longitudinal and transverse lines as a steel bar planting position, detecting the position of a steel bar in the structure, and then drilling by using an electric hammer; s3, hole wall cleaning and steel bar implanting: after drilling, hole depth and hole diameter are checked, dust in holes is blown out by an air compressor after the hole depth and hole diameter are qualified, then the holes are cleaned by clean water, the holes are blown by compressed air again after cleaning, the operation is repeated for 3-5 times until no dust and chippings exist in the holes, then the holes are temporarily closed after being dried, and then the holes are formed; then, the treated steel bars are implanted into the holes, and structural adhesives are injected into the holes after implantation is completed; the method has the advantages of being simple in process, small in single-hole reinforcement work amount and high in construction speed.

Description

technical field [0001] The invention relates to the technical field of railway construction, in particular to a construction method for lateral reinforcement of simply supported double T beams of an existing railway bridge. Background technique [0002] With the continuous improvement of the operating speed of railway trains in my country, the structure of the railway T-beam bridge built in the 1970s can no longer meet the needs of high-speed operation. After demolition and new construction, in addition to the huge cost, due to the long construction period, the The operation of the existing railway line will also have a certain impact. For this reason, we propose a construction method for lateral reinforcement of the existing railway bridge with simply supported double T beams. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a construction method for the lateral reinforcement of th...

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of the operating speed of my country's railway trains, the structure of the railway T-beam bridge built in the 1970s can no longer meet the needs of high-speed operation. After demolition and new construction, in addition to the huge cost, due to the long construction period, the The operation of existing railway lines will also cause certain impacts. For this reason, we propose a construction method for simply supporting double T-beam transverse reinforcement of existing railway bridges.