Bridge expansion joint structure and construction technology thereof

A technology for expansion joints and bridges, applied in bridges, bridge parts, bridge materials, etc., can solve problems such as increasing the adhesion between concrete and pre-embedded reinforcement, poor pre-embedding effect, welding point distribution spacing, and reducing maintenance time, etc. To achieve the effect of shortening the construction period, fast construction speed and long service life

Inactive Publication Date: 2010-11-24
ZHEJIANG KEBO REINFORCEMENT WORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The elastic concrete layer can provide good elastic deformation, impact resistance and wear resistance, and the upper part can focus on its ability to withstand wheel pressure and wear resistance, while the lower epoxy resin concrete layer has the advantage of strong adhesion. It can increase the bonding force between the concrete and the pre-embedded reinforcement, so

Method used

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  • Bridge expansion joint structure and construction technology thereof
  • Bridge expansion joint structure and construction technology thereof
  • Bridge expansion joint structure and construction technology thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0040] Example 1

[0041] Such as figure 1 As shown, the bridge expansion joint structure described in this embodiment is located at the mid-span of the bridge. It includes a concrete layer 12, section steel 1, embedded reinforcement 2 and a filling layer 15. The embedded reinforcement 2 is embedded in the adjacent beam slab 13 Above, the exposed part is poured into the concrete layer, the filling layer 15 is located in the gap between the adjacent beams 13, and the filling layer 15 is a foam board. The concrete layer mainly includes an elastic concrete layer 8 and an epoxy concrete layer 9. The elastic concrete layer 8 is located above the epoxy resin concrete layer 9, and the epoxy resin concrete layer 9 is arranged above the adjacent beam slab 13.

[0042] Of course, the filling layer 15 can also be other filling materials commonly used in construction, such as sponge and sponge board. The epoxy resin concrete layer 9 can be epoxy resin concrete commonly used in construction, s...

Example Embodiment

[0044] Example 2

[0045] Such as figure 2 As shown, the bridge expansion joint structure described in this embodiment is different from the embodiment 1 in that a connecting rib 16 is provided between the embedded rib 2 and the section steel 1 to connect them. The connecting rib 16 also uses steel bars, and the embedded rib 2 is welded with the section steel 1 to increase the strength.

Example Embodiment

[0046] Example 3

[0047] Such as image 3 As shown, the bridge expansion joint structure described in this embodiment is located at the junction of the bridge and the road surface. It includes a concrete layer 12, a section steel 1, a pre-embedded bar 2, and a filling layer 15. The concrete layer mainly includes an elastic concrete layer 8. And the epoxy concrete layer 9, the elastic concrete layer 8 is located above the epoxy concrete layer 9, and the epoxy concrete layer 9 is arranged above the adjacent beams 13 and the back wall 14 of the cap.

[0048] In order to effectively bond the layers, an adhesive layer 17 is provided between the epoxy resin concrete layer 9 and the elastic concrete layer 8, and on the lower surface of the epoxy resin concrete layer 9, so that the epoxy The construction joints between the resin concrete layer 9 and the elastic concrete layer 8, and between the epoxy resin concrete layer 9 and the beam slab 13 and the cap back wall 14 will not form a barr...

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Abstract

The invention provides a bridge expansion joint structure which comprises a concrete layer, section steel, embedded bars and a packing layer, wherein, the concrete layer mainly comprises an elastic concrete layer and an epoxy resin concrete layer, wherein, the elastic concrete layer is positioned above the epoxy resin concrete layer, and the epoxy resin concrete layer is arranged above adjacent beam slabs or above adjacent beam slabs and abutment coping back walls. The construction technology of the bridge expansion joint structure is to pour concrete on the beam slabs or the abutment coping back walls, and comprises the following specific measures: coating a binder on the beam slabs or the abutment coping back walls; pouring epoxy resin concrete on the binder and curing for 1 hour; painting the binder on the cured epoxy resin concrete; and pouring elastic concrete on the binder painted on the epoxy resin concrete and curing for 2 hours. The bridge expansion joint structure and the construction technology provided by the invention have the beneficial effects of high strength, simple construction technology, short curing time and low construction cost.

Description

technical field [0001] The invention relates to a bridge structure, in particular to a bridge expansion joint structure and a construction process thereof. Background technique [0002] In order to prevent the damage to the bridge structure caused by thermal expansion and contraction caused by temperature changes, and to meet the expansion and displacement requirements of the beam body and bridge deck, bridge expansion joints are widely used in various bridge structures. Existing bridge expansion joints mainly include bridge expansion joints composed of adjacent beam slabs, and bridge expansion joints composed of beam slabs and platform cap back walls. The bridge expansion joints composed of adjacent beam slabs are usually located in the middle span of the bridge. , and the bridge expansion joints composed of the beam slab and the back wall of the platform cap are usually located at the end span of the bridge and the road surface. [0003] The existing concrete for expansio...

Claims

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Application Information

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IPC IPC(8): E01D19/04E01D101/24
Inventor 陆建峰
Owner ZHEJIANG KEBO REINFORCEMENT WORKS CO LTD
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