Paving method of sleel bridge surface composite layer

A steel bridge deck and composite layer technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of not achieving the expected effect, affecting the performance of the bridge deck, and brittle fracture of the pavement layer, so as to improve road use Excellent performance, improved comprehensive work efficiency, and good anti-deformation performance

CN1624243AActive Publication Date: 2005-06-08WUHAN MUNICIPAL CONSTR GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2005-06-08

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Abstract

This invention relatesto a paving method of one pavement material of steel bridge surface, including the following steps: 1) preparation of lightweight concrete of steel mixing fiber and plain lightweight concrete; 2) pre-treatment of steel bridge surface; 3) peg soldering by the method of arc stud welding; 4) steel net bonding: to bind the steel net to the peg by steel thread; 5) choice of inherent stress steel thread and infliction of inherent stress: inherent stress steel thread situates below the natural axis, inflict the inherent stress by pretensioned system, with the controlling stress between 38-42%fptk; 6) pave one layer of lightweight concrete of steel mixing fiber on the steel bridge surface, and then pave one layer of plain light concrete to the light weight concrete of steel mixing fiber; 7) pave one layer of asphalt conctete on the plain light weight concrete. This invention can efficiently solve such technical difficulties as rutting, traction and cuddling, improve greatly road qualities of the pavement and prolong the application life of steel bridge.
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Description

technical field

[0001] The invention belongs to the field of bridge engineering, and in particular relates to a paving method for steel box girder bridge surface materials. Background technique

[0002] Steel decks are more and more widely used in long-span bridges because of their convenient construction, light weight, and economical savings. A large number of existing bridges at home and abroad use this type of deck structure. Steel bridge deck pavement generally refers to laying a 10cm thick asphalt surface layer on the steel plate, and the bridge deck and the asphalt surface layer are bonded together by an adhesive. Under high temperature conditions in summer, the temperature of the steel bridge deck will reach about 60-80°C, causing the bonding material to become invalid due to softening, and the stability of the asphalt concrete will deteriorate. Debonding between the bridge deck and the asphalt pavement will cause the asphalt pavement to develop defects such as shift...

Examples

Embodiment 1

[0033] A pavement method for a composite deck of a steel bridge, comprising the steps of:

[0034] 1. Preparation of lightweight concrete mixed with steel fibers and plain lightweight concrete:

[0035] a. Lightweight concrete mixed with steel fibers is mainly composed of water, pretreated light aggregates, cement, fine aggregates, silica fume, high-efficiency water reducer FDN, steel fibers and water-soluble polymers, in proportion by weight : Water: light aggregate after pretreatment: cement: fine aggregate: silica fume = 1: 3.36: 3.2: 3.94: 0.32, high-efficiency water reducing agent FDN is 0.8 according to the amount of cement, and steel fiber is according to the light weight of mixed steel fiber 0.75% of the volume of quality concrete, and 11% of the amount of cement used for water-soluble polymers; the above-mentioned components are stirred evenly to make a mixture, and the product is obtained.

[0036] initial collapse

fall

/ cm

Compressive strength...

Embodiment 2

[0077] Embodiment 2: It is basically the same as Embodiment 1, except that the proportioning ratio of each component of the lightweight concrete mixed with steel fibers and the plain lightweight concrete is different.

[0078] a. Lightweight concrete mixed with steel fibers is mainly composed of water, pretreated light aggregates, cement, fine aggregates, silica fume, high-efficiency water reducer FDN, steel fibers and water-soluble polymers, in proportion by weight : Water: light aggregate after pretreatment: cement: fine aggregate: silica fume = 1: 3.00: 2.90: 3.80: 0.15, high-efficiency water reducing agent FDN is 0.8 according to the amount of cement, steel fiber is according to the volume % of lightweight concrete 0.1 of the water-soluble polymer is 10 of the cement content %; the above-mentioned components are stirred evenly to make a mixture, and the product is obtained.

[0079] b. Preparation of plain lightweight concrete: plain lightweight concrete is mainly composed...

Embodiment 3

[0080] Embodiment 3: It is basically the same as Embodiment 1, except that the proportioning ratio of each component of the lightweight concrete mixed with steel fibers and the prepared plain lightweight concrete is different.

[0081] a. Lightweight concrete mixed with steel fibers is mainly composed of water, pretreated light aggregates, cement, fine aggregates, silica fume, high-efficiency water reducer FDN, steel fibers and water-soluble polymers, in proportion by weight : Water: light aggregate after pretreatment: cement: fine aggregate: silica fume = 1: 3.50: 3.50: 3.95: 0.40, high-efficiency water reducing agent FDN is 1.4 according to the amount of cement, steel fiber is according to the volume % of lightweight concrete 1.5 of the water-soluble polymer, 20 of the cement content %; the above-mentioned components are stirred evenly to make a mixture, and the product is obtained.

[0082] b. Preparation of plain lightweight concrete: plain lightweight concrete is mainly c...