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Production process of anchor pocket type prestress bridge beam slabs

A production process and prestressing technology, applied in the direction of manufacturing tools, supply devices, molds, etc., can solve the problems of joint construction joints, delamination, and time-consuming and labor-intensive sealing, so as to reduce joint construction joints, avoid spring deformation or Flip, increase the effect of stability

Active Publication Date: 2017-08-04
江苏惠淳建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] "Applicable to prestressed beam and slab anchor hole" In various bridge designs, it is necessary to carry out secondary pouring on the beam edge, but when pouring the beam edge, it is easy to appear the phenomenon of construction joints and delamination
Also, it is very time-consuming and labor-intensive to seal the stage construction joints formed after the secondary pouring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An anchor hole type prestressed bridge beam slab production process; including the following steps: (1) beam template installation: install the beam template and the slab template, the width of the slab template is 150-250mm on each side than the width of the post-cast belt when the slab template is matched. Paste the anti-leakage sponge double-sided tape between the circumference of the post-pouring belt and the beam and slab formwork; (2) The first concrete pouring: when the concrete is poured after pouring, the concrete at the post-pouring belt is higher than the surface of the cast-in-situ slab 30-100mm lower; (3) Second concrete pouring: pouring the beam side on the end of the beam slab poured for the first time in step (2), the length of the beam side is 10-15cm; also includes the following steps: (1a ) Install the spring anchor: After performing step (1), place one end of the spring anchor between the beam templates, and the other end of the spring anchor extends o...

Embodiment 2

[0022] An anchor-cavity type prestressed bridge beam slab production process; including the following steps: (1) beam template installation: install the beam template and the slab template, the width of the slab template is 150~250mm on each side than the width of the post-cast belt when the slab template is matched with the mold. Paste the anti-leakage sponge double-sided tape between the circumference of the post-pouring belt and the beam and slab formwork; (2) The first concrete pouring: when the concrete is poured after pouring, the concrete at the post-pouring belt is higher than the surface of the cast-in-situ slab 30-100mm lower; (3) Second concrete pouring: pouring the beam side on the end of the beam slab poured for the first time in step (2), the length of the beam side is 10-15cm; also includes the following steps: (1a ) Install the spring anchor: After performing step (1), place one end of the spring anchor between the beam templates, and the other end of the spring ...

Embodiment 3

[0026] An anchor hole type prestressed bridge beam slab production process; including the following steps: (1) beam template installation: install the beam template and the slab template, the width of the slab template is 150-250mm on each side than the width of the post-cast belt when the slab template is matched. Paste the anti-leakage sponge double-sided tape between the circumference of the post-pouring belt and the beam and slab formwork; (2) The first concrete pouring: when the concrete is poured after pouring, the concrete at the post-pouring belt is higher than the surface of the cast-in-situ slab 30-100mm lower; (3) Second concrete pouring: pouring the beam side on the end of the beam slab poured for the first time in step (2), the length of the beam side is 10-15cm; also includes the following steps: (1a ) Install the spring anchor: After step (1), place one end of the spring anchor between the beam templates, and the other end of the spring anchor extends out of the a...

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Abstract

The invention relates to the field of bridge beam slab production, in particular to a production process of anchor pocket type prestress bridge beam slabs, and aims to provide the bridge beam slab production process utilizing spring anchors to tension the beam edges poured twice to avoid the phenomena of joint section construction seams and separation of the beam slabs. According to the technical scheme of the production process of the anchor pocket type prestress bridge beam slabs, after beam formworks are installed, one ends of the spring anchors are placed between the beam formworks, the other ends of the spring anchors extend out of the area defined by the beam formworks, and an air cylinder is utilized to expand the spring anchors after first concrete pouring is carried out. According to the production process, the phenomena of the joint section construction seams and separation of the beam slabs can be avoided, and the internal prestress of the bridge beam slabs can be increased.

Description

Technical field [0001] The invention relates to the field of bridge beam slab production, in particular to a production process of anchor cave-type prestressed bridge beam slabs. Background technique [0002] The beam slab in the bridge refers to the main load-bearing component of the bridge. It is a reinforced concrete slab that is connected by beams and slabs. It includes beam-slab ribs and cross-ribs. The engineering quantity is calculated based on the sum of the beam and slab volumes. [0003] Beam slab refers to a reinforced concrete slab that is connected by beams and slabs. It includes beam-slab ribbed slabs and tic-shaped ribbed slabs. The engineering quantity is calculated according to the total volume of beams and slabs. The beam slab refers to a slab that is connected by beams (main beams, secondary beams) and slabs in one or two directions, called beam slabs. Refers to the slab with ribbed beams. The ribbed beams here do not include frame beams. That is, I think it do...

Claims

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Application Information

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IPC IPC(8): B28B13/02B28B7/02
CPCB28B7/02B28B13/02
Inventor 王斌郑均刘锋
Owner 江苏惠淳建设有限公司
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