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A pre-tensioned prefabricated beam pedestal

A prefabricated beam and pre-tensioning method, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of wasting materials, complex structure, waste of artificial production time and other problems, and achieve a safe, simple structure, and high promotion and use value. Effect

Active Publication Date: 2019-02-01
CHINA RAILWAY 23RD BUREAU GRP RAILTRANSIT ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a pre-tensioned prefabricated beam pedestal in order to overcome the disadvantages of complex structure, waste of materials, waste of labor and long production period of the beam pedestal used in the prior art. By changing its own structure, the prefabricated beam pedestal makes its structure simpler and reduces the consumption of materials and labor, which has a great effect on saving costs and speeding up the construction progress

Method used

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  • A pre-tensioned prefabricated beam pedestal
  • A pre-tensioned prefabricated beam pedestal
  • A pre-tensioned prefabricated beam pedestal

Examples

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Embodiment 1

[0030] like image 3 As shown, the pre-tensioned prefabricated beam pedestal includes a rectangular slab base plate 1 and force transmission columns 2, the force transmission columns 2 are arranged in parallel on both sides of the base plate 1, and the two ends of the force transmission column 2 are respectively arranged with fixed-end steel beams 6 and tension The steel beam at the end is connected with a tensioning device on the steel beam at the tensioning end. A steel strand 3 is arranged between the steel beam 6 at the fixed end and the steel beam at the tensioning end. One end of the steel strand 3 is fixed to the steel beam 6 at the fixed end. One end passes through the steel beam at the tensioning end and is connected to the tensioning device. When the tensioning device stretches the steel strand 3, the steel strand 3 moves relative to the steel beam at the tensioning end, so that the steel beam 6 at the fixed end is stretched tightly. At the end of the force transmiss...

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Abstract

The invention discloses a precast beam construction technology, and particularly relates to a precast beam pedestal obtained through a pre-tensioning method. The precast beam pedestal comprises a rectangular plate bottom plate and force transmission columns arranged on the two sides of the bottom plate in parallel. A fixing end steel beam is arranged at one ends of the force transmission columns, and a tensioning end steel beam is arranged at the other ends of the force transmission columns. A tensioning device is connected to the tensioning end steel beam. Steel strands are arranged between the fixing end steel beam and the tensioning end steel beam. When the tensioning device conducts tensioning on the steel strands, the steel strands and the tensioning end steel beam move relatively, and therefore the fixing end steel beam can be tensioned and closely attached to one ends of the force transmission columns, and meanwhile the tensioning end steel beam is pressed and closely attached to the other ends of the force transmission columns. According to the precast beam pedestal obtained through the pre-tensioning method, by changing the structural form of the pedestal, the defects that a traditional pedestal is complex in structure, wastes materials and labor and is long in manufacturing period are overcome, the precast beam pedestal can be simple in structure, cost is substantially saved, and the construction progress is accelerated.

Description

technical field [0001] The invention relates to the technical field of prefabricated beam construction, in particular to a pretensioned prefabricated beam pedestal. Background technique [0002] Pretensioning method is a method of pre-stressing concrete members during the prefabrication process to improve the performance of members in order to improve the crack resistance of reinforced concrete members and avoid premature cracks in reinforced concrete members. Usually, the method of tensioning steel bars before pouring concrete is also known as pretensioning, and it plays an important role in engineering construction. [0003] In the production of prefabricated beams, the process of pretensioning and prestressing has a great effect on improving the structure and performance of the beam body. First, the fixed steel strands are stretched and fixed before pouring concrete, and the tensioned fixed steel strands are temporarily anchored. Then pour concrete on the pedestal or ste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B23/04
CPCB28B23/043
Inventor 黄静林茂德方东明崔爱军黄力平孙波孙汉贵罗晓明秦小三汪正银蒋汉祥何志勇李良才张召徐闯王俊和孙施健
Owner CHINA RAILWAY 23RD BUREAU GRP RAILTRANSIT ENG CO LTD
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