CN111877157A - Synergistic shearing-resistant high-durability section steel bridge deck pavement structure and construction method thereof - Google Patents

Synergistic shearing-resistant high-durability section steel bridge deck pavement structure and construction method thereof Download PDF

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Publication number
CN111877157A
CN111877157A CN202010759643.XA CN202010759643A CN111877157A CN 111877157 A CN111877157 A CN 111877157A CN 202010759643 A CN202010759643 A CN 202010759643A CN 111877157 A CN111877157 A CN 111877157A
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China
Prior art keywords
bridge deck
layer
steel
durability
pavement structure
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CN202010759643.XA
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Chinese (zh)
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付军
王哲世
丁庆军
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Priority to CN202010759643.XA priority Critical patent/CN111877157A/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/12Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125Grating or flooring for bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/30Metal

Abstract

The invention provides a cooperative shearing-resistant high-durability steel bridge deck pavement structure and a construction method thereof, wherein the steel bridge deck pavement structure comprises a steel bridge deck, a concrete layer, a gradient matching interface stress absorption layer and a high-viscosity high-elasticity SMA surface layer, wherein the concrete layer is paved on the steel bridge deck and is connected with the steel bridge deck through a cooperative shearing-resistant system, and the concrete layer comprises concrete and a grid reinforcing mesh embedded in the concrete layer; the gradient matching interface stress absorption layer is arranged between the concrete layer and the high-viscosity high-elasticity SMA surface layer, so that effective bonding is generated between the concrete layer and the high-viscosity high-elasticity SMA surface layer. According to the combined pavement structure and the construction method thereof, the lightweight high-durability low-shrinkage ultrahigh-performance concrete material with excellent performance is adopted, so that the generation of cracks can be effectively controlled, the structure shrinkage is small, the toughness is high, the temperature stability is good, the durability is good, and the fatigue performance of a steel bridge deck can be effectively improved.

Description

Synergistic shearing-resistant high-durability section steel bridge deck pavement structure and construction method thereof
Technical Field
The invention belongs to the technical field of bridge engineering, and relates to a synergistic shearing-resistant high-durability section steel bridge deck pavement structure and a construction method thereof.
Background
Orthotropic steel bridge deck slab has been widely used for large and medium span bridges due to the characteristics of light weight, convenient transportation and erection, high construction speed and the like since the coming out of the last century. However, during the operation of the bridge, the pavement of the steel bridge deck is generally damaged by cracking, hugging, rutting, interlayer slippage and the like. The main reasons are: (1) due to the structural characteristics of the longitudinal and transverse stiffening ribs and the like of the orthotropic steel plates, the rigidity change is large, so that the stress of a pavement layer is complex, and the local stress is overlarge; (2) the commonly used asphalt pavement material has low rigidity, poor temperature stability and easy deformation at high temperature.
In general, engineering technicians can reduce the occurrence of diseases by means of optimizing the construction details of the orthotropic steel plates, improving the performance of paving layer materials, controlling overload and the like. However, orthotropic steel bridge decks are typical steel structures, asphalt concrete surface layers are made of inorganic non-metallic materials, and if the characteristics of transition layer materials between the asphalt concrete surface layers and the inorganic non-metallic materials do not meet the gradient matching principle, diseases are difficult to control fundamentally.
If a light high-durability low-shrinkage ultra-high performance concrete layer with appropriate mold strength ratio and reasonable expansion coefficient is laid between the steel-asphalt concrete materials, and a cooperative shearing system, a reinforcing mesh and other members are arranged inside the light high-durability low-shrinkage ultra-high performance concrete layer, the effects of stable rigidity transition and cooperative deformation of each layer of the pavement structure can be achieved, and the stability, comfort and durability of the pavement structure are effectively improved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a synergistic shear-resistant high-durability section steel bridge deck pavement structure with low shrinkage, high toughness, good temperature stability, good durability and good economy and a construction method thereof, and the problems of more diseases and short service life of the conventional steel bridge deck pavement are effectively solved.
The technical scheme adopted for solving the problems in the prior art is as follows:
the utility model provides a high durable shaped steel bridge deck pavement structure shears in coordination which characterized in that: the bridge deck comprises a steel bridge deck 1, a concrete layer 2, a gradient matching interface stress absorption layer 3 and a high-viscosity high-elasticity SMA (asphalt mastic gravel mixture) surface layer 4, wherein the concrete layer 2 is laid on the steel bridge deck 1 and is connected with the steel bridge deck 1 through a cooperative shearing resisting system 5, and the concrete layer 2 comprises concrete and a grid reinforcing mesh embedded in the concrete layer; the gradient matching interface stress absorbing layer 3 is arranged between the concrete layer 2 and the high-viscosity high-elasticity SMA surface layer 4, is used for effectively bonding the concrete layer 2 and the high-viscosity high-elasticity SMA surface layer, and has the functions of preventing water, preventing crack propagation of the concrete layer 2, reflecting upwards and the like.
The thickness of the concrete layer 2 is 40-60 mm, and the lightweight high-durability low-shrinkage ultrahigh-performance concrete material used in the concrete layer 2 comprises the following components: cement: the cement meets the GB175 specification, preferably P.O 52.5 cement or P.II 52.5 cement, and the dosage thereof is 750-850 kg/m3(ii) a Ceramic sand: the ceramic sand should meet the requirements of lightweight aggregate and test method thereof (GB/T17431.1), and preferably adopts 900-grade shaped approximately spherical ceramic sand, the cylinder pressure strength is more than 6.0MPa, the fineness modulus is 2.3-3.5, and the dosage is recommended to be 650-750 kg/m3(ii) a Coal ash micro-beads: the fly ash micro-beads meet the GB/T1596 regulations, the water demand ratio is less than 92 percent, and the dosage of the fly ash micro-beads is recommended to be 150-200 kg/m3(ii) a Silica fume: the silica fume should meet the GB/T27690 specification, the 7d activity index is not less than 105%, and the dosage is recommended to be 150-200 kg/m3(ii) a Swelling agent: the expanding agent is preferably II type expanding agent meeting the requirements of concrete expanding agent (GB/T23439-2017), and the dosage of the II type expanding agent is recommended to be 60-80 kg/m3(ii) a Mixing fine copper-plated steel fibers and PVA fibers: the volume rate is 2.5-3.0%; water reducing agent: the dosage is 25-40 kg/m3(ii) a Water-to-glue ratio: 0.16 to 0.18.
The 28-day axial center compressive strength R of the concrete layer 2 is more than or equal to 100MPa, the ultimate tensile strain is more than or equal to 2 percent, and the shrinkage s is 360 days<300 mu, volume weight p<2100kg/m3Toughness index I20>20 (stress level 0.7), can be cast in place or prefabricated, and is free from steam curing at normal temperature.
The asphalt spreading amount of the gradient matching interface stress absorbing layer 3 is 1.4 +/-0.2 kg/m2The gradient matching interface stress absorbing layer 3 adopts fiber modified emulsified asphalt, and the dynamic viscosity v is more than or equal to 60000 Pa.s at the temperature of 60 ℃; the gradient matching interface stress absorbing layerAnd 3, thermally scattering basalt macadam on the surface, wherein the particle size of the macadam is 4.75-9.5 mm, and the coverage rate is 65-75%.
The thickness of the high-viscosity high-elasticity SMA surface layer 4 is 30-50 mm, and the high-viscosity high-elasticity SMA surface layer is made of high-viscosity high-elasticity SMA-10.
The system 5 height of shearing in coordination is 35 ~ 55mm, system 5 of shearing in coordination includes that one end welding is at 1 upper surface of steel bridge panel, shear force nail and shear plate inside concrete layer 2 are pour to the other end, the shear plate includes two of parallel arrangement along the longitudinal bridge to being strip form distribution, shear plate thickness is 10mm or 12mm, a plurality of round holes are seted up to the shear plate top, the aperture is 20 ~ 40mm, the reinforcing bar that supplies the reinforcing bar net passes, interval between the adjacent shear plate is 500mm, the shear force nail sets up between two shear plates, interval between the adjacent shear force nail is 300 ~ 400mm, be plum blossom form distribution.
The reinforcing mesh 6 is formed by welding or binding a plurality of reinforcing steel bars which are arranged in a transverse and longitudinal direction in a shape like a Chinese character jing, the diameter of each reinforcing steel bar is 10mm or 12mm, and the distance between every two adjacent reinforcing steel bars is 100-200 mm.
The invention provides a construction method for paving a bridge deck by using the cooperative shearing-resistant high-durability section steel, which comprises the following steps:
s1: welding a cooperative shear system 5 on the steel bridge deck 1;
s2: binding or welding a reinforcing mesh 6 on the cooperative shearing resisting system 5;
s3: pouring lightweight high-durability low-shrinkage ultrahigh-performance concrete on the steel bridge deck 1 to cover the cooperative shear system and the reinforcing mesh, thereby forming a lightweight high-durability low-shrinkage ultrahigh-performance concrete layer 2;
s4: laying a gradient matching interface stress absorbing layer 3 on the top surface of the concrete layer 2;
s5: and paving a high-viscosity high-elasticity SMA surface layer 4 on the gradient matching interface stress absorption layer 3.
The step S1 is preceded by: and (3) carrying out sand blasting on the surface of the steel bridge deck plate 1 to remove rust.
The steps between the step S1 and the step S2 further include: and (3) performing anticorrosive coating on the welding part of the steel bridge deck plate 1 and the cooperative shear resisting system 5.
The invention has the following advantages:
1. the combined pavement structure and the construction method thereof provided by the invention adopt the lightweight high-durability low-shrinkage ultra-high performance concrete material with excellent performance, can effectively control the generation of cracks, can effectively improve the extreme temperature effect born by the steel bridge deck due to the direct contact with the asphalt concrete layer, can effectively realize the rigidity transition of each layer of the pavement structure, can jointly bear the vehicle load with the steel-ultra-high performance concrete combined structure formed by orthotropic steel plates, adopts the gradient matching interface stress absorbing layer made of fiber modified emulsified asphalt, has good bonding performance, and has the functions of preventing water, preventing the crack of the lightweight high-durability low-shrinkage ultrahigh-performance concrete layer from expanding and reflecting upwards and the like, therefore, the synergistic shearing-resistant high-durability steel bridge deck pavement structure has the advantages of small shrinkage, high toughness, good temperature stability and good durability, and can effectively improve the fatigue performance of the steel bridge deck;
2. according to the combined pavement structure and the construction method, the LUHPC base layer can be cast in place or prefabricated in a factory, steam curing is avoided, construction is convenient, and the cost performance is high.
Drawings
FIG. 1 is an overall schematic view of a steel bridge deck pavement structure according to the present invention;
fig. 2 is a schematic perspective view of the arrangement of the shear resisting system and the reinforcing mesh according to the present invention;
fig. 3 is a schematic plan view illustrating the arrangement of the shear resisting system and the reinforcing mesh according to the present invention;
fig. 4 is a schematic view of the cooperative shearing prevention system and the reinforcing mesh arrangement shear plate of the present invention;
FIG. 5 is a flow chart of the construction method of the steel deck pavement structure of the present invention.
Reference numerals: 1-steel deck slab; 2-a concrete layer; 3-gradient matching interface stress absorbing layer; 4-high-viscosity high-elasticity SMA surface layer; 5-a synergistic shear system; 6-reinforcing mesh.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments, with reference to the accompanying drawings, as shown in fig. 1 to 5:
a cooperative shearing-resistant high-durability section steel bridge deck pavement structure comprises a steel bridge deck 1, a concrete layer 2, a gradient matching interface stress absorption layer 3 and a high-viscosity high-elasticity SMA surface layer 4, wherein the concrete layer 2 is paved on the steel bridge deck 1 and is connected with the steel bridge deck 1 through a cooperative shearing-resistant system 5, and the concrete layer 2 comprises concrete and a grid mesh reinforcement embedded in the concrete layer; the gradient matching interface stress absorbing layer 3 is arranged between the concrete layer 2 and the high-viscosity high-elasticity SMA surface layer 4, is used for effectively bonding the concrete layer 2 and the high-viscosity high-elasticity SMA surface layer, and has the functions of preventing water, preventing crack propagation of the concrete layer 2, reflecting upwards and the like.
The thickness of the concrete layer 2 is 40-60 mm, and the light high-durability low-shrinkage ultrahigh-performance concrete material used in the concrete layer 2 comprises the following components: cement: the cement meets the GB175 specification, preferably P.O 52.5 cement or P.II 52.5 cement, and the dosage thereof is 750-850 kg/m3(ii) a Ceramic sand: the ceramic sand should meet the requirements of lightweight aggregate and test method thereof (GB/T17431.1), and preferably adopts 900-grade shaped approximately spherical ceramic sand, the cylinder pressure strength is more than 6.0MPa, the fineness modulus is 2.3-3.5, and the dosage is recommended to be 650-750 kg/m3(ii) a Coal ash micro-beads: the fly ash micro-beads meet the GB/T1596 regulations, the water demand ratio is less than 92 percent, and the dosage of the fly ash micro-beads is recommended to be 150-200 kg/m3(ii) a Silica fume: the silica fume should meet the GB/T27690 specification, the 7d activity index is not less than 105%, and the dosage is recommended to be 150-200 kg/m3(ii) a Swelling agent: the expanding agent is preferably II type expanding agent meeting the requirements of concrete expanding agent (GB/T23439-2017), and the dosage of the II type expanding agent is recommended to be 60-80 kg/m3(ii) a Mixing fine copper-plated steel fibers and PVA fibers: the volume rate is 2.5-3.0%; water reducing agent: the dosage is 25-40 kg/m3(ii) a Water-to-glue ratio: 0.16 to 0.18.
The 28-day axial center compressive strength R of the concrete layer 2 is more than or equal to 100MPa, the ultimate tensile strain is more than or equal to 2 percent, the 360-day shrinkage s is less than 300 mu, the volume weight rho is less than 2100kg/m3, the toughness index I20 is more than 20 (the stress level is 0.7), and the concrete layer can be cast in place or prefabricated and is free of steam curing at normal temperature.
The asphalt spreading amount of the gradient matching interface stress absorbing layer 3 is 1.4 +/-0.2 kg/m2The gradient matching interface stress absorbing layer 3 adopts fiber modified emulsified asphalt and moves at 60 DEG CThe dynamic viscosity v is more than or equal to 60000Pa · s; the basalt broken stones are scattered on the surface of the gradient matching interface stress absorption layer 3 in a hot mode, the grain size of the broken stones is 4.75-9.5 mm, and the coverage rate is 65-75%.
The thickness of the high-viscosity high-elasticity SMA surface layer 4 is 30-50 mm, and the high-viscosity high-elasticity SMA surface layer is made of high-viscosity high-elasticity SMA-10.
The height of the cooperative shearing system 5 is 35-55 mm, the cooperative shearing system 5 comprises shear nails and shear plates, one ends of the shear nails are welded on the upper surface of the steel bridge deck plate 1, the other ends of the shear nails and the shear plates are poured inside the concrete layer 2, the shear plates comprise two shear nails and shear plates which are arranged in parallel and distributed along the longitudinal bridge direction in a strip shape, the thickness of the shear plates is 10mm or 12mm, a plurality of round holes are formed above the shear plates, the diameter of each round hole is 20-40 mm, reinforcing steel bars of a reinforcing steel bar net can penetrate through the round holes, the distance between every two adjacent shear plates is 500mm, the shear nails are arranged between the two shear plates, and the distance between every two adjacent shear nails is 300.
The reinforcing mesh 6 is formed by welding or binding a plurality of reinforcing steel bars which are arranged in a transverse and longitudinal direction in a shape like a Chinese character jing, the diameter of each reinforcing steel bar is 10mm or 12mm, and the distance between every two adjacent reinforcing steel bars is 100-200 mm.
A construction method for paving a bridge deck with cooperative shearing resistance and high durability of section steel comprises the following steps:
s1: sand blasting is carried out on the surface of the steel bridge deck plate 1 for rust removal, and a cooperative shearing resisting system 5 is welded on the steel bridge deck plate 1; performing anticorrosive coating on the welding part of the steel bridge deck 1 and the cooperative shear system 5; the welding of the cooperative shearing system and the steel bridge deck plate 1 is evaluated by a welding process, and the result meets the regulations of the national current relevant standards;
s2: binding or welding a reinforcing mesh 6 on the cooperative shearing resisting system 5;
s3: pouring lightweight high-durability low-shrinkage ultrahigh-performance concrete on the steel bridge deck 1 to cover the cooperative shear system and the reinforcing mesh, thereby forming a lightweight high-durability low-shrinkage ultrahigh-performance concrete layer 2;
s4: laying a gradient matching interface stress absorbing layer 3 on the top surface of the concrete layer 2;
s5: and paving a high-viscosity high-elasticity SMA surface layer 4 on the gradient matching interface stress absorption layer 3.
The invention provides a synergistic shearing-resistant high-durability steel bridge deck pavement structure and a construction method, which adopt a light high-durability low-shrinkage ultrahigh-performance concrete material with excellent performance, can effectively control the generation of cracks, can effectively improve the extreme temperature effect borne by a steel bridge deck due to the direct contact with an asphalt concrete layer, can effectively realize the rigidity transition of each layer of the pavement structure, can jointly bear the vehicle load with a steel-ultrahigh-performance concrete combined structure formed by orthotropic steel plates, adopts a gradient matching interface stress absorption layer made of fiber modified emulsified asphalt, has good bonding performance, has the functions of preventing water, preventing the crack expansion and upward reflection of the light high-durability low-shrinkage ultrahigh-performance concrete layer and the like, thereby the synergistic shearing-resistant high-durability steel bridge deck pavement structure has the advantages of small shrinkage, high toughness, good temperature stability and good durability, the fatigue performance of the steel bridge deck can be effectively improved; according to the combined pavement structure and the construction method, the LUHPC base layer can be cast in place or prefabricated in a factory, steam curing is avoided, construction is convenient, and the cost performance is high.
The protective scope of the present invention is not limited to the above-described embodiments, and it is apparent that various modifications and variations can be made to the present invention by those skilled in the art without departing from the scope and spirit of the present invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims (10)

1. The utility model provides a high durable shaped steel bridge deck pavement structure shears in coordination which characterized in that: the concrete layer is laid on the steel bridge deck and connected with the steel bridge deck through a cooperative shear system, and comprises concrete and a grid reinforcing mesh embedded in the concrete layer; the gradient matching interface stress absorption layer is arranged between the concrete layer and the high-viscosity high-elasticity SMA surface layer, so that effective bonding is generated between the concrete layer and the high-viscosity high-elasticity SMA surface layer.
2. A synergistic shear resistant high durability article as claimed in claim 1Shaped steel bridge deck pavement structure, its characterized in that: the thickness of the concrete layer is 40-60 mm, and the light high-durability low-shrinkage ultrahigh-performance concrete material used in the concrete layer comprises the following components: cement: the cement meets the GB175 specification, and P.O 52.5 cement or P.II 52.5 cement is selected, and the dosage is 750-850 kg/m3(ii) a Ceramic sand: the ceramic sand meets the requirement of GB/T17431.1, is shaped into approximately spherical ceramic sand with 900 grades, has the cylinder pressure strength of more than 6.0MPa, the fineness modulus of 2.3-3.5 and the dosage of 650-750 kg/m3(ii) a Coal ash micro-beads: the fly ash micro-beads meet the GB/T1596 specification, the water demand ratio is less than 92 percent, and the usage amount is 150-200 kg/m3(ii) a Silica fume: the silica fume conforms to the specification of GB/T27690, the 7d activity index is not less than 105 percent, and the dosage of the silica fume is 150-200 kg/m3(ii) a Swelling agent: the expanding agent is preferably II type expanding agent meeting the requirements of GB/T23439-2017, and the using amount of the II type expanding agent is 60-80 kg/m3(ii) a Mixing fine copper-plated steel fibers and PVA fibers: the volume ratio is 2.5-3.0%; water reducing agent: the dosage of the composition is 25-40 kg/m3(ii) a The water-glue ratio is as follows: 0.16 to 0.18.
3. A bridge deck pavement structure of steel sections with high durability and cooperative shearing resistance according to claim 1, wherein: the 28-day axial center compressive strength R of the concrete layer is more than or equal to 100MPa, the ultimate tensile strain is more than or equal to 2 percent, and the shrinkage s is 360 days<300 mu, volume weight p<2100kg/m3Toughness index I20>20, casting or prefabricating in situ, and curing at normal temperature without steam.
4. A bridge deck pavement structure of steel sections with high durability and cooperative shearing resistance according to claim 1, wherein: the asphalt spreading amount of the gradient matching interface stress absorbing layer is 1.4 +/-0.2 kg/m2The gradient matching interface stress absorbing layer adopts fiber modified emulsified asphalt, and the dynamic viscosity v at 60 ℃ is more than or equal to 60000 Pa.s; the basalt crushed stone is thermally scattered on the surface of the gradient matching interface stress absorption layer, the particle size of the crushed stone is 4.75-9.5 mm, and the coverage rate is 65-75%.
5. A bridge deck pavement structure of steel sections with high durability and cooperative shearing resistance according to claim 1, wherein: the thickness of the high-viscosity high-elasticity SMA surface layer is 30-50 mm, and the high-viscosity high-elasticity SMA surface layer is made of high-viscosity high-elasticity SMA-10.
6. A bridge deck pavement structure of steel sections with high durability and cooperative shearing resistance according to claim 1, wherein: the system height of shearing in coordination is 35 ~ 55mm, the system of shearing in coordination includes that one end welding is at steel bridge panel upper surface, shear force nail and shear plate inside at concrete layer are pour to the other end, the shear plate includes parallel arrangement along the longitudinal bridge to two that are strip-shaped distribution, shear plate thickness is 10mm or 12mm, a plurality of round holes are seted up to the shear plate top, the aperture is 20 ~ 40mm, the reinforcing bar that supplies the reinforcing bar net passes, interval between the adjacent shear plate is 500mm, the shear force nail sets up between two shear plates, interval between the adjacent shear force nail is 300 ~ 400mm, be plum blossom form distribution.
7. A bridge deck pavement structure of steel sections with high durability and cooperative shearing resistance according to claim 1, wherein: the reinforcing mesh is formed by welding or binding a plurality of reinforcing steel bars which are arranged in a transverse and longitudinal shape like a Chinese character jing, the diameter of each reinforcing steel bar is 10mm or 12mm, and the distance between every two adjacent reinforcing steel bars is 100-200 mm.
8. A construction method of a bridge deck pavement structure of cooperative shearing resistance and high durability section steel according to any one of claims 1 to 7, comprising the steps of:
s1: welding a cooperative shearing resisting system on the steel bridge deck;
s2: binding or welding a reinforcing mesh on the cooperative shearing resisting system;
s3: pouring light high-durability low-shrinkage ultrahigh-performance concrete on the steel bridge deck slab to cover the cooperative shearing system and the reinforcing mesh, thereby forming a light high-durability low-shrinkage ultrahigh-performance concrete layer;
s4: laying a gradient matching interface stress absorbing layer on the top surface of the concrete layer;
s5: and paving a high-viscosity high-elasticity SMA surface layer on the gradient matching interface stress absorption layer.
9. The construction method of a bridge deck pavement structure of cooperative shear-resistant high-durability section steel according to claim 8, wherein: step S1 is preceded by sand blasting to remove rust on the surface of the steel bridge deck 1.
10. The construction method of a bridge deck pavement structure of cooperative shear-resistant high-durability section steel according to claim 8, wherein: the steps between the step S1 and the step S2 further include: and (3) performing anticorrosive coating on the welding part of the steel bridge deck plate 1 and the cooperative shear resisting system 5.
CN202010759643.XA 2020-07-31 2020-07-31 Synergistic shearing-resistant high-durability section steel bridge deck pavement structure and construction method thereof Pending CN111877157A (en)

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CN112832117A (en) * 2021-01-05 2021-05-25 中交路桥建设有限公司 Connecting method of prefabricated box girder and transition layer and prefabricated box girder structure

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