Application of polymer sealant in bridge expansion joint device by serving as sealant

A telescopic device and sealant technology, used in bridges, bridge parts, bridge construction, etc., can solve the problems of short service life, water leakage, easy blockage, etc., and achieve the effect of reducing economic losses, good sealing performance, and delaying aging.

Inactive Publication Date: 2016-08-17
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymer sealant is embedded in the expansion joint to form a telescopic device with good sealing performance and good displacement capacity, which effectively solves the defect

Method used

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  • Application of polymer sealant in bridge expansion joint device by serving as sealant
  • Application of polymer sealant in bridge expansion joint device by serving as sealant
  • Application of polymer sealant in bridge expansion joint device by serving as sealant

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] Such as figure 1 , figure 2 As shown, the application of polymer sealant as a sealant in bridge expansion devices:

[0030] Polymer sealant is polysulfide sealant (two-component polysulfide sealant, purchased from Hengshui Dayu Engineering Rubber Technology Development Co., Ltd.); bridge expansion device is steel expansion device; backing material is polyethylene closed cell foam ( Polyethylene closed-cell foam board, purchased from Hengshui Aotai Engineering Rubber Co., Ltd.).

[0031] The bridge expansion joint structure includes an expansion joint and a bridge expansion device. The gap between two adjacent beams forms an expansion joint. The bridge expansion device includes a section steel 1a symmetrically arranged on the sides of the two beams. The section steel 1a is provided with an opening. Facing the notch seam of the expansion joint, the section steels 1a on both sides are connected into a whole by the sealing rubber strip 2a laid in the notch sea...

Example Embodiment

[0041] Example 2

[0042] Such as image 3 As shown, the application of polymer sealant as a sealant in bridge expansion devices:

[0043] The polymer sealant is polyurethane sealant (polyurethane road caulking glue, purchased from Guangzhou Huaguan Engineering Co., Ltd., Chinese Academy of Sciences); the bridge expansion device is a modular expansion device; the backing material is polyethylene closed cell foam (polyethylene closed Cellular foam board, purchased from Hengshui Aotai Engineering Rubber Co., Ltd.).

[0044] The bridge expansion joint structure includes an expansion joint and a bridge expansion device. The gap between two adjacent beams forms an expansion joint. The bridge expansion device includes a section steel 1b symmetrically arranged on the sides of the two beams. Facing the notch seam of the expansion joint, the section steels 1b on both sides are connected into one body by the sealing rubber strip 2b laid in the notch seam. The application steps of the polymer ...

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Abstract

The invention provides an application of a polymer sealant in a bridge expansion joint device by serving as a sealant. The surface layer of the expansion joint device is filled with the sealant, so that water prevention and protection of the expansion joint device are achieved, and a rubber sealant or a resin sealant serves as the polymer sealant. The rubber sealant is formed by mixing one or two of a polysulfide sealant, a polyurethane sealant and a silicone sealant in any proportion. The resin sealant is formed by mixing one or two of an epoxy resin sealant, an unsaturated polyester resin sealant and a phenolic resin sealant in any proportion. The bridge expansion joint device is a structural steel expansion device or a modular expansion device or a non-expansion device.

Description

(1) Technical field [0001] The invention relates to a polymer sealant, in particular to the application of the polymer sealant as a sealant in a bridge telescopic device. (2) Background technology [0002] Bridge telescoping devices are an important part of bridge design. The bridge expansion device will adapt to the relative movement of the bridge deck caused by factors such as temperature changes, vehicle loads, humidity, shrinkage, creep, and earthquake loads. It is the existence of the expansion device that keeps the bridge components in a constant state under expansion and contraction. Bridge telescoping devices allow bridges to maintain their structural integrity as they move continuously. However, neglecting the design, material selection, construction and installation of the bridge expansion device will make the life of the expansion device far lower than expected, and a large number of maintenance and replacement work will be required during the normal use of the b...

Claims

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Application Information

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IPC IPC(8): E01D19/06
CPCE01D19/067
Inventor 卢彭真邵华卢彭龙
Owner ZHEJIANG UNIV OF TECH
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