Production of concrete beam

Abstract

A technology for preparing concrete beam includes such steps as providing shuttering boards, binding reinforcing bars, arranging prestressing corrugated pipe and twisted steel wires, pouring concrete, stretching, grouting, sealing anchor, ageing, stretching for external prestressing, grouting, sealing anchor, precise locating, and installing track or other functional parts.

Description

Technical field: [0001] The invention relates to a concrete beam, especially a prestressed setting method for a prestressed beam body used in a bridge structure of a high-speed railway, a high-speed wheel-rail, a track beam of a magnetic levitation railway and a prestressed beam body of a rail vehicle running track, specifically a method with Prestress setting method for prestressed concrete beams with high precision deformation requirements. Background technique: [0002] The high-speed railway system has high requirements on the alignment of the track to ensure the safety of the train and the comfort of the passengers during high-speed operation. Therefore, after considering factors such as construction errors, it is very important to minimize and control the unrecoverable deformation caused by non-load changes of the bridge structure (such as deformation caused by concrete shrinkage and creep). [0003] Because high-speed railways have higher requirements on the stiffnes...

AI Technical Summary

Problems solved by technology

For long-distance lines, it is necessary to set up a pre-tensioning prestressing workshop at a certain distance along the line, which greatly increases the project cost and has certain limitations

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