Bridge damping support

A technology for shock-absorbing bearings and bridges, applied in the field of bridge shock-absorbing bearings, can solve problems such as the inability to apply pot-type rubber bearings well, and achieve outstanding mechanical properties, enhanced mechanical properties, tensile and tear resistance. high crack strength

Active Publication Date: 2018-12-28
浙江名博建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanisms of various factors affecting rubber aging are different, so this rubber material is not suitable for basin rubber bearings and needs to be improved.

Method used

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  • Bridge damping support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A bridge shock-absorbing bearing, such as figure 1 As shown, it includes a top plate 1, a stainless steel plate 2, a polytetrafluoroethylene plate 3, a middle steel plate 4, a rubber block 5 and a bottom basin 6 from top to bottom. The rubber block 5 is placed at the bottom of the bottom basin 6, the middle steel plate 4 is partly placed in the bottom basin 6, and a sealing ring 7 is arranged between the rubber block 5 and the middle steel plate 4.

Embodiment 2

[0044] The rubber block in embodiment one comprises the following parts by weight:

[0045] 60 parts of natural rubber;

[0046] Butadiene rubber 25 parts;

[0047] 1 part sulfur;

[0048] 3 parts of nano zinc oxide;

[0049] 2 parts stearic acid;

[0050] 0.8 part of zinc dialkyldithiophosphate;

[0051] 2 parts of silane coupling agent;

[0052] 20 parts of reinforcing agent, the reinforcing agent is made of diatomite and organic montmorillonite in a ratio of 1:1 by weight, the particle size of diatomite is 15 μm, and the particle size of organic montmorillonite is 5 μm;

[0053] 25 parts of carbon black;

[0054] Lecithin 1 part;

[0055] Magnesium oxide 0.2 parts.

[0056] The preparation method of rubber block is as follows:

[0057] Step 1: Bake 60 parts of natural rubber in an oven for 2 hours, then take it out into an open mill, add 1 part of lecithin and 25 parts of carbon black, and knead for 5 minutes at a reaction temperature of 160°C;

[0058] Step 2: Pu...

Embodiment 3

[0063]The rubber block in embodiment one comprises the following parts by weight:

[0064] 90 parts of natural rubber;

[0065] Butadiene rubber 40 parts;

[0066] 3 parts sulfur;

[0067] 6 parts of nano zinc oxide;

[0068] 4 parts stearic acid;

[0069] 1.5 parts of zinc dialkyldithiophosphate;

[0070] 5 parts of silane coupling agent;

[0071] 30 parts of reinforcing agent, the reinforcing agent is made of diatomite and organic montmorillonite in a ratio of 1:1 by weight, the particle size of diatomite is 30 μm, and the particle size of organic montmorillonite is 10 μm;

[0072] 35 parts of carbon black;

[0073] 3 parts lecithin;

[0074] Magnesium oxide 0.5 part.

[0075] The preparation method of rubber block is as follows:

[0076] Step 1: Bake 90 parts of natural rubber in an oven for 2 hours, then take it out to an open mill, add 3 parts of lecithin and 35 parts of carbon black, and knead for 5 minutes at a reaction temperature of 160°C;

[0077] Step 2: P...

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Abstract

The invention discloses a bridge damping support, and relates to the field of bridge construction. The bridge damping support sequentially comprises a top plate, a stainless steel plate, a polytetrafluoroethylene plate, a middle steel plate, a rubber block and a bottom basin, the rubber block is arranged in the bottom basin, and sealing rings are arranged between the rubber block and the middle steel plate. The rubber block comprises, by weight, 60-90 parts of natural rubber, 25-40 parts of butadiene rubber, 1-3 parts of sulfur, 3-6 parts of nano zinc oxide, 2-4 parts of stearic acid, 0.8-1.5parts of accelerant, 2-5 parts of silane coupling agent, 20-30 parts of reinforcing agent, 25-35 parts of carbon black and 1-3 parts of lecithin. The bridge damping support is mainly composed of the natural rubber and the butadiene rubber, has outstanding mechanical properties and is high in tensile strength and tearing strength, molecular chain breaking caused by the action of external mechanicalstress is not likely to happen, and the anti-seismic property is excellent. The lecithin serves as a modifier so that the carbon black can carry out in-situ grafting reaction, then the mechanical aging resistance of the rubber block is improved, and the service life is greatly prolonged.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a bridge damping bearing. Background technique [0002] Bridges are generally composed of superstructure, substructure, bearings and auxiliary structures. The bridge bearing is an important component that connects and restrains the upper and lower structures of the bridge, and is an indispensable part for the load-bearing of the bridge. There are various bridge bearing structures, among which the basin rubber bearing is the most common and has excellent shock absorption effect. The rubber material in the pot rubber bearing is an important part, and its life affects the quality of the rubber bearing, which in turn affects the service life of the bridge. However, rubber materials will age due to their own or external factors, so how to improve the service life of rubber materials is a very important issue at present. [0003] The Chinese patent with the notification number CN1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08K13/06C08K5/521C08K3/34C08K3/22
CPCC08K2003/222C08K2201/003C08L7/00C08L9/00C08K13/06C08K5/521C08K3/34C08K3/346C08K3/22
Inventor 杨云彬杨学良陈雪静李明波娄丽翔
Owner 浙江名博建设有限公司
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