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Embedded mounting method for reinforcing steel bar concrete box girder construction

A reinforced concrete and box girder technology, applied in the erection/assembly of bridges, bridge construction, bridges, etc., can solve the problems of shortening erection time, prolonging erection time, wasting construction period, etc., to shorten erection time, shorten construction period, and reduce construction cost effect

Inactive Publication Date: 2008-09-17
CHINA METALLURGICAL CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the deficiencies of the prior art reinforced concrete box girder erection technology that cannot take out two hoisting steel rods, prolonging the erection time, wasting the construction period, etc., and provides a method that can conveniently take out two hoisting steel rods, effectively shorten the erection time, Reinforced Concrete Box Girder Erection Embedded Installation Method for Reducing Construction Cost

Method used

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  • Embedded mounting method for reinforcing steel bar concrete box girder construction
  • Embedded mounting method for reinforcing steel bar concrete box girder construction
  • Embedded mounting method for reinforcing steel bar concrete box girder construction

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Embodiment Construction

[0017] The erection and embedded installation method of reinforced concrete box girder of the present invention comprises the following steps:

[0018] 1. The reinforced concrete box girder is erected in a symmetrical erection method, and the embedded erection method is adopted when erecting the last reinforced concrete box girder in the middle;

[0019] 2. Use two steel rods whose length is less than half of the width of the reinforced concrete box girder and whose length is greater than the wall thickness of the cavity in the reinforced concrete box girder, and put them into the stress sleeve. The length of the stress sleeve is less than that of the reinforced concrete box The width of the cavity in the beam is composed of the above two steel rods and the stress sleeve to form a telescopic sleeve, which is used as the stress rod when erecting the last piece of reinforced concrete box girder;

[0020] 3. Put the above stress sleeve into the hoisting reserved hole of the reinf...

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Abstract

The invention discloses a flush mounting method of erecting a reinforced concrete box beam, which is characterized by the following steps: (1) a manner of the symmetrical erection is adopted to erect the reinforced concrete box beam; a manner of flush mounting is adopted to erect the last reinforced concrete box beam in the middle; (2) two steel bars are enclosed in a forcing sleeve, the length of each steel bar is smaller than half of the width of the reinforced concrete box beam and the total length of the two bars is less than that of the forcing sleeve; the two steel bars and the forcing sleeve constitute a extension sleeve as a forcing member bar used in erecting the last reinforced concrete box beam; (3) the forcing sleeve is put into hoisting reserved holes of the reinforced concrete box beam, steel bars are respectively inserted into the two hoisting reserved holes and respectively into the two ends of the forcing sleeve. The mounting method of the invention is capable of conveniently erecting the last box beam in the middle into the adjacent box beam in the flush mounting manner and conveniently taking out the two steel bars used for hoisting, which effectively reduces the erection time, shortens the construction period and reduces the construction cost.

Description

technical field [0001] The invention relates to a method for erecting and installing a reinforced concrete box girder in the construction field, in particular to an embedded installation method adopted when erecting a heavy-duty reinforced concrete box girder. Background technique [0002] In the construction of highways, ordinary roads, railways, etc., it is usually necessary to erect reinforced concrete box girders to bear the weight. The beams are erected from one pier to the adjacent pier, extending span by span, forming an integral "bridge". Between two bridge piers, according to the design requirements or technical specifications, it is generally necessary to erect 5, or 6, or 7, or 8 reinforced concrete box girders. The force situation and the safety of the technical specifications for erection must adopt a symmetrical erection method, that is, take the center line of the pier as the symmetrical line, and after erecting a box girder on the left side of the symmetrica...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D2/04E01D101/26
Inventor 陈国民
Owner CHINA METALLURGICAL CONSTR ENG GRP
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