Production of concrete beam

A technology of concrete beams and manufacturing methods, which is applied in the direction of joists, girders, trusses, etc., and can solve problems such as increasing project costs

Inactive Publication Date: 2005-07-27
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For long-distance lines, it is necessary to set up a pre-tensioning prestressing workshop at a cer

Method used

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  • Production of concrete beam
  • Production of concrete beam
  • Production of concrete beam

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] The present invention is a manufacturing method of concrete beams, characterized in that: the method for setting the prestressed concrete beams includes the following steps: a. erecting formwork and binding steel bars; b. laying prestressed corrugated pipes and prestressed steel strands; c. Pouring concrete; d. After the concrete reaches a certain strength, pre-tensioning and post-tensioning; e. Grouting and anchoring; f. When the tunnel mortar and anchoring concrete reach the strength required by the design, hoist it to the beam storage area. Storage; g. Tensioning of external prestress; h. Grouting and anchoring; I. Accurate positioning after the tunnel mortar and anchoring concrete reach the strength required by the design; j. Installing rails or other functional parts. The design requirement strength of concrete mentioned in this production m...

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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...

Claims

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Application Information

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IPC IPC(8): E01B25/30E04C3/26
Inventor 任廷柱周质炎窦仲赟
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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