CN108797333B - Combined steel bridge deck pavement structure - Google Patents
Combined steel bridge deck pavement structure Download PDFInfo
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- CN108797333B CN108797333B CN201810612315.XA CN201810612315A CN108797333B CN 108797333 B CN108797333 B CN 108797333B CN 201810612315 A CN201810612315 A CN 201810612315A CN 108797333 B CN108797333 B CN 108797333B
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
Abstract
The invention discloses a combined steel bridge deck pavement structure, which comprises steel bridge deck steel plates and is characterized in that: the steel bridge deck steel plate is characterized in that a first modified epoxy resin layer, a first gravel layer, a second modified epoxy resin layer, a second gravel layer, a first waterproof bonding layer, a waterproof structural layer, a second waterproof bonding layer and a drainage type wearing layer are sequentially paved on the surface of the steel bridge deck steel plate from bottom to top. In this patent, first modified epoxy resin layer, first metalling, the modified epoxy resin layer of second, second metalling have constituted modified epoxy rubble combination formula articulamentum. The first waterproof bonding layer, the waterproof structure layer, the second waterproof bonding layer and the drainage type wearing layer form an ultrahigh-performance pavement (UHPP for short). The invention (UHPP-ME) prevents slippage and delamination between structural layers and ensures the stability and durability of the structure.
Description
Technical Field
The invention relates to a cable bearing structure bridge, in particular to a steel bridge deck pavement structure of a large-span cable bearing structure bridge.
Background
In the last two decades, China builds a lot of large-span cable bearing structure bridges, and the main beam structure of the bridge basically adopts orthotropic steel panels and thin layers to be paved to form a bridge travelling system structure. The orthotropic steel bridge deck structure consists of transverse diaphragm beams, longitudinal stiffening ribs and a bridge deck supported by the transverse diaphragm beams and the longitudinal stiffening ribs, the elastic performance of the bridge deck structure in the transverse direction and the longitudinal direction is different, the rigidity of the bridge deck in different positions in the same direction is different, the factors form the rigidity and deformation nonuniformity of the orthotropic steel bridge deck, and in addition, the special positions where the bridge deck is paved directly bear the combined action of the factors such as vehicle load, temperature change, ultraviolet rays, rainwater and the like, so that higher requirements are provided for the pavement performance of the bridge deck. (1) In design, special requirements such as strength, mechanics, deformation characteristics and the like influenced by factors such as driving load, wind load, temperature change, local deformation of a steel bridge deck and the like are met. (2) In use, the special requirements of light pavement weight, impermeability, cohesiveness, temperature stability, good fatigue durability and the like are met. At present, three paving materials of high-temperature mixing pouring type asphalt concrete, modified asphalt SMA and epoxy asphalt concrete are formed by paving large-span steel bridge decks at home and abroad. In China, due to improper use conditions or problems of design, construction and the like, the steel bridge deck is damaged by cracks, oil flooding, hugging, rutting, loosening, slippage, delamination and the like during the service period, and the safety, the comfort and the durability of the bridge structure of driving are directly influenced. Therefore, the structural design of the steel bridge deck pavement layer is a soul in the steel bridge deck pavement construction process, the structural failure is directly caused due to improper design, and the design problem of the steel bridge deck pavement can be summarized into incompetence, insufficient understanding and insufficient innovation at the present stage.
The construction of the steel bridge deck pavement layer has the following problems: the paving materials commonly used mainly include four types of AC (dense-graded asphalt concrete), SMA (stone mastic asphalt concrete), GA (cast asphalt concrete), and EA (epoxy asphalt concrete). Epoxy asphalt concrete is mostly adopted at present in China, and epoxy asphalt binders and binding materials required by waterproof bonding layers and surface layer mixtures are imported mainly from the United states and Japan, and the stability and durability of the epoxy asphalt binders and the binding materials are difficult to master and judge. Taking the epoxy asphalt steel bridge deck pavement as an example, the epoxy asphalt mixture is generally formed by mixing an epoxy asphalt binder, an aggregate and mineral powder according to a certain proportion, wherein the binder can be a bi-component (American epoxy) or a tri-component (Japanese epoxy). For the technical indexes of aggregate, the physical indexes are usually checked according to the related technical indexes of highway engineering aggregate test regulations on construction sites, the adhesiveness with the epoxy asphalt binder is controlled according to the indexes (more than or equal to 4) of common asphalt, and the requirement is hardly really met for epoxy asphalt mixtures; meanwhile, insufficient or unstable material source supply can occur on site, so that the site use and test of the aggregate are greatly changed, and the systematic test cannot be performed systematically in time due to the engineering progress requirement, so that the construction is hastily. The mineral powder is selected mainly by considering the physical indexes such as fineness, hydrophobicity and the like, active lime is not contained, but no additional requirement is imposed on harmful impurities in the mineral powder, if the mineral powder is doped with metal minerals, rusting can be caused by electrochemical reaction, the integrity and the waterproof effect of a pavement structure are weakened, and potential hidden danger is brought. The surface of the crushed stone in the existing single-layer crushed stone structure cannot be completely covered by resin, the deformation of a steel bridge deck system is large, the adhesion capacity of a bridge deck steel plate is low, the pavement layer is damaged mostly due to insufficient followability of an asphalt concrete surface layer to the deformation of a bridge deck, the interlayer bonding durability is poor, further delamination and slippage between the pavement layer and the bridge deck steel plate are caused to be damaged, the steel plate can be corroded under the condition that water exists, the durability and safety of a bridge are extremely unfavorable, and long-term practice proves that the bonding and protection problems between the bridge deck pavement layer and the bridge deck steel plate play a crucial role in the success or failure of the whole steel bridge deck pavement. The internal temperature of the steel bridge deck pavement layer is higher in hot environment in summer, generally can reach 60-70 ℃, which is very unfavorable for the high-temperature stability of the steel bridge deck pavement layer, and the main reasons of pavement structure layer damage are that the high-temperature durability is poor and the material performance is aged and loses efficacy.
Disclosure of Invention
In order to overcome the above disadvantages, the present invention provides a combined steel deck pavement structure that prevents slippage and delamination between structural layers and ensures structural stability and durability.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
modular steel bridge deck pavement structure, including the steel bridge deck steel sheet, the surface of steel bridge deck steel sheet has been laid first modified epoxy layer, first metalling, second modified epoxy layer, second metalling, first waterproof bonding layer, waterproof type structural layer, second waterproof bonding layer and drainage formula wearing and tearing layer by from bottom to top in proper order, and wherein, what the material of first waterproof bonding layer adopted is high viscosity modified emulsified asphalt (SUPER PME).
In this patent, first modified epoxy resin layer, first rubble layer, second modified epoxy resin layer, second rubble layer have constituted modified epoxy rubble combination formula articulamentum, and the thickness of modified epoxy rubble combination formula articulamentum is 5 ~ 10 mm. The first waterproof bonding layer, the waterproof structure layer, the second waterproof bonding layer and the drainage type wearing layer form an Ultra-High Performance Pavement (UHPP for short), and the Ultra-High Performance Pavement is a Pavement covering layer. The UHPP structure surface layer of the ultra-high performance pavement is stable, the ageing resistance and the anti-rutting performance are good, and the drainage wearing layer has excellent functions of water resistance, drainage, skid resistance, noise reduction, cooling and the like. A Modified epoxy resin CME (combined Modified epoxy) gravel combined connecting layer and an Ultra-High Performance Pavement UHPP (Ultra-High Performance Pavement) are sequentially paved on a steel bridge deck to form the steel bridge deck Pavement combined structure (an Ultra-High Performance Pavement epoxy combined system: UHPP-ME combined structure for short).
Furthermore, in the first modified epoxy resin layer, the amount of the modified epoxy resin is 1.0-1.5 kg/m2Uniformly spread on the surface of the steel plate.
Furthermore, in the second modified epoxy resin layer, the modified epoxy resin is used in an amount of 4.0-5.0 kg/m2Uniformly spread on the surface of the steel plate.
Furthermore, in the first gravel layer and the second gravel layer, the diameter of the gravel is within 3-6 mm.
Furthermore, the drainage type wearing layer is formed by paving stone mixed with high-molecular polymer asphalt, the porosity of the layer is greater than 20%, and the thickness of the layer is 10-20 mm.
Furthermore, the waterproof structure layer is formed by paving stone mixed with high-molecular polymer composite cross-linked high-performance modified asphalt (high molecular polymer asphalt, HPV BINDER for short), and the thickness of the waterproof structure layer is 30-50 mm.
Further, the modified epoxy resin is composed of 100 parts by weight of a component A and 100 parts by weight of a component B, wherein the preparation method of the component A is as follows: adopting bisphenol A type epoxy resin and bisphenol F type epoxy resin, wherein the epoxy value is 0.20mol/100 g-0.60 mol/100g, carrying out end capping reaction with polyether Polyol (PIM) and grafted isocyanate (MPI) to produce hybrid epoxy resin with a flexible structure, and then compounding the hybrid epoxy resin with low-viscosity temperature-resistant special epoxy resin and polyethylene glycol glycidyl ether active diluent; wherein, for the specific weight percentage ratio of the bisphenol A type epoxy resin and the bisphenol F type epoxy resin, the limit requirements of the viscosity of the adhesive glue and the internal quality of the glue are set according to the air temperature of the construction environment, the bisphenol A type epoxy resin is 60-95 percent, and the bisphenol F type epoxy resin is 5-40 percent; the preparation method of the component B comprises the following steps: synthesizing high-purity dimer Acid (Acid) and aliphatic high amine (TETA), modifying with hydrogenated aromatic amine, wherein the addition amount of the hydrogenated aromatic amine is 5-25% of the total weight of the high-purity dimer Acid (Acid) and the aliphatic high amine (TETA), the reaction temperature is 80-120 ℃, the high-temperature resistant low-viscosity epoxy resin is used for bridging reaction, free amine is eliminated by an addition method, and the modified aromatic amine is compounded with functional additives; wherein, the specific weight percentage ratio of the high-purity dimer Acid (Acid) to the aliphatic high amine (TETA) is adjusted according to the requirement of the steel plate bridge environment and the change of the temperature environment, the high-purity dimer Acid (Acid) is 60-70%, and the aliphatic high amine (TETA) is 30-40%.
The invention has the beneficial effects that:
1. according to the pathological characteristics of the steel bridge deck damage, the modified epoxy resin and the high-molecular polymer asphalt are selected and used as structural layer bonding materials. The modified epoxy resin has strong binding power with a steel bridge, strong anti-deformation capability and strong anti-shearing capability, can effectively protect a steel bridge deck, and simultaneously, 3-6 mm broken stones are tightly bound with a steel plate of the bridge deck; the high-molecular polymerized asphalt can ensure that the excellent high-temperature performance and road performance of the UHPP mixture of the ultra-high performance road surface can be fully exerted; the drainage type wearing layer in the UHPP of the ultrahigh-performance pavement has excellent functions of water resistance, drainage, skid resistance, noise reduction, temperature reduction and the like.
2. The combined type connecting layer of the modified epoxy resin macadam is used, 100% of the surface of the macadam in the first layer of the macadam layer is wrapped by the modified epoxy resin, the macadam is uniformly distributed in the resin, firmly embedded and tightly bonded with the steel plate, and the defect that the surface of the macadam cannot be completely covered by the resin in the existing single-layer macadam structure, so that the stability and the bonding force are insufficient is overcome. The combined connecting layer can absorb the relative displacement between the pavement layer and the bridge deck steel plate and plays a role of a stress absorption layer when the bridge deck steel plate deforms under the action of temperature change or driving load, thereby realizing good follow-up property between the pavement layer and the bridge deck steel plate, well overcoming the generation of diseases such as cracks, bulges and the like, and playing a waterproof and anticorrosion function on the steel bridge deck. In addition, the stable molecular structure of the modified epoxy resin ensures the durability of the structure.
3. The combination of the rough upper surface of the modified epoxy resin macadam combined type connecting layer, namely the second macadam layer (the construction depth is more than 3.0 mm), and the waterproof structure layer in the UHPP of the ultra-high performance pavement can effectively resist the horizontal shear stress generated when a vehicle runs, prevent the sliding between the structure layers and ensure the stability of the structure, and meanwhile, the first waterproof bonding layer uses the active epoxy asphalt bonding material with good adhesion function, so that the upper layer and the lower layer of the structure system form a whole.
4. The UHPP of the ultra-high performance pavement selects high molecular polymer asphalt with excellent performance as a binding material to produce a high-quality standard mixture with stable performance, good toughness and strong high-temperature aging resistance, thereby ensuring the durability of a main body structure.
5. The outstanding comprehensive performance, the special open-graded design and the interlayer treatment process of the UHPP of the ultra-high performance pavement can effectively solve the problems of insufficient depth and anti-slip coefficient of epoxy pavement and rapid reduction of early functional indexes of asphalt pavement, and can also solve the technical bottlenecks of pore blockage, frost heaving damage and poor waterproof bonding of the general OGFC drainage pavement.
6. By adopting the high-viscosity modified emulsified asphalt spraying, fixing and sealing reinforcement method, the structural performance and road function of the old UHPP wearing layer are circularly recovered, the problem that the road performance of a non-drainage pavement structure is difficult to recover by a maintenance means is solved, and the service life of the pavement structure can be prolonged.
7. The UHPP-ME composite structure of this patent compares from functional, security, feature of environmental protection, travelling comfort, economic nature with other steel bridge deck pavement schemes and has clear advantage, and construction convenience, efficient have obvious advantage to the major repair engineering that traffic pressure is big moreover.
Drawings
The invention is further described with the aid of the accompanying drawings, in which the embodiments do not constitute any limitation, and for a person skilled in the art, without inventive effort, further drawings may be obtained from the following figures:
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. steel bridge deck steel plates; 2. a first modified epoxy resin layer; 3. a first crushed stone layer; 4. a second modified epoxy resin layer; 5. a second crushed stone layer; 6. a first waterproof adhesive layer; 7. a waterproof structural layer; 8. a second waterproof adhesive layer; 9. a drainage wearing layer.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it is to be noted that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.
As shown in fig. 1, the combined steel bridge deck pavement structure comprises a steel bridge deck steel plate 1, wherein a first modified epoxy resin layer 2, a first gravel layer 3, a second modified epoxy resin layer 4, a second gravel layer 5, a first waterproof bonding layer 6, a waterproof structure layer 7, a waterproof bonding layer 8 and a drainage type wearing layer 9 are sequentially laid on the surface of the steel bridge deck steel plate 1 from bottom to top, wherein the drainage type wearing layer is laid by stone mixed with high-molecular polymerized asphalt, the porosity of the layer is greater than 20%, the thickness of the layer is 10-20 mm, and high-viscosity modified emulsified asphalt (SUPER PME) is adopted as a material in the first waterproof bonding layer 6; the material of the second waterproof bonding layer 8 is selected from ultra-high viscosity modified emulsified asphalt or high-molecular polymer asphalt bonding layer oil or active epoxy asphalt adhesive; the waterproof structure layer is made of stone mixed with high molecular polymer composite cross-linked high-performance modified asphalt (high molecular polymer asphalt, HPV BINDER for short).
Wherein in the first modified epoxy resin layer 2, the modified epoxy resin is used in an amount of 1.0-1.5 kg/m2Uniformly spreading the modified epoxy resin on the surface of the steel plate, wherein in the second modified epoxy resin layer, the modified epoxy resin is used in an amount of 4.0-5.0 kg/m2Evenly spread and scribble on the steel sheet surface, in first rubble layer and the second rubble layer, the rubble diameter is in 3 ~ 6mm, first modified epoxy resin layer, first rubble layer, the modified epoxy resin layer of second, second rubble layer have constituted modified epoxy rubble combination formula articulamentum, and the thickness of modified epoxy rubble combination formula articulamentum is 5 ~ 10 mm.
In the first modified epoxy resin layer 2 and the second modified epoxy resin layer 4, the performance indexes of the modified epoxy resin are as follows: the adhesive force between the steel bridge deck and a steel plate is greater than 5Mpa, the compressive strength is greater than 47.6Mpa, the tensile strength (23 ℃) is greater than 15.4Mpa, the elongation (23 ℃) is greater than 65%, the tensile strength (0 ℃) is greater than 18.6Mpa, the elongation (0 ℃) is greater than 23%, the tensile modulus is greater than 204Mpa, and the water absorption (maximum value) is less than 0.1%, and specifically shown in table 1:
TABLE 1 Performance index of modified epoxy resins
Researches and practices prove that the modified epoxy resin layer has outstanding bonding force on a steel structure, has the excellent characteristics of strong bonding force on the steel structure, large deformation space, high strength and strong shearing resistance, effectively absorbs the relative displacement between a pavement layer and a bridge deck slab, plays the role of a stress absorption layer, thereby realizing good followability between a steel bridge deck pavement layer and a bridge deck steel plate, effectively solving the problems of large deformation of a large-span steel structure bridge and bonding between the bonding layer and an upper structural layer, and simultaneously playing a good role in strengthening the overall rigidity of the steel plate. The test results are shown in Table 2.
TABLE 2 modified epoxy resin and Steel plate drawing test results
The thickness of the waterproof structure layer is 30-50 mm, and the performance indexes of the high-molecular polymer composite cross-linked high-performance modified asphalt (short for high-molecular polymer asphalt and HPV BINDER) in the waterproof structure layer are as follows: 100g at 25 ℃, 5s and the penetration degree of not less than 4 mm; softening point (ring and ball method) is not less than 90 ℃; 5 ℃ and 5cm/min, and the ductility is not less than 25 cm; the solubility is not less than 99 percent; a flash point of not less than 230 ℃; at 25 ℃, the elastic recovery is not less than 90%, the viscotoughness is not less than 20N.m, and the needle penetration ratio is not less than 75%; 5 ℃ and the ductility is not less than 15 cm. Specific parameters are shown in table 3:
TABLE 3 Performance index of high-molecular polymeric asphalt
In the first waterproof bonding layer 6, high-viscosity modified emulsified asphalt (SUPER PME) is used as a material, and the special emulsified asphalt is emulsified and processed by high-quality asphalt, SBS modifier, antioxidant aging agent and the like by using special compound emulsifier, and is shown in Table 4.
TABLE 4 quality technical Standard of high-viscosity modified emulsified asphalt (SUPER PME)
The modified epoxy resins have been patented, and for clarity of description, specific methods for their preparation are now described as follows: the adhesive is composed of 100 parts of a component A and 100 parts of a component B by weight, wherein the preparation method of the component A comprises the following steps: adopting bisphenol A type epoxy resin and bisphenol F type epoxy resin, wherein the epoxy value is 0.20mol/100 g-0.60 mol/100g, carrying out end capping reaction with polyether Polyol (PIM) and grafted isocyanate (MPI) to produce hybrid epoxy resin with a flexible structure, and then compounding the hybrid epoxy resin with low-viscosity temperature-resistant special epoxy resin and polyethylene glycol glycidyl ether active diluent; wherein, for the specific weight percentage ratio of the bisphenol A type epoxy resin and the bisphenol F type epoxy resin, the limit requirements of the viscosity of the adhesive glue and the internal quality of the glue are set according to the air temperature of the construction environment, the bisphenol A type epoxy resin is 60-95 percent, and the bisphenol F type epoxy resin is 5-40 percent; the preparation method of the component B comprises the following steps: synthesizing high-purity dimer Acid (Acid) and aliphatic high amine (TETA), modifying with hydrogenated aromatic amine, wherein the addition amount of the hydrogenated aromatic amine is 5-25% of the total weight of the high-purity dimer Acid (Acid) and the aliphatic high amine (TETA), the reaction temperature is 80-120 ℃, the high-temperature resistant low-viscosity epoxy resin is used for bridging reaction, free amine is eliminated by an addition method, and the modified aromatic amine is compounded with functional additives; wherein, the specific weight percentage ratio of the high-purity dimer Acid (Acid) to the aliphatic high amine (TETA) is adjusted according to the requirement of the steel plate bridge environment and the change of the temperature environment, the high-purity dimer Acid (Acid) is 60-70%, and the aliphatic high amine (TETA) is 30-40%.
The working principle is as follows: the steel bridge deck Pavement combined structure has the characteristics of clear structural function, stable and durable material Performance, excellent service Performance, convenient construction and maintenance conditions, obvious economic and technical index advantages and the like. In addition, the water-draining type wearing layer of the UHPP of the ultrahigh-performance pavement has good waterproof, water-draining, anti-skidding, noise-reducing and temperature-reducing effects, and can circularly recover the pavement performance of the wearing layer through preventive maintenance measures, thereby achieving the purpose of prolonging the service life. Therefore, the UHPP-ME combined structure is a novel efficient steel bridge deck pavement system integrating safety, environmental protection, comfort, durability and wide applicability. The UHPP-ME composite structure of this patent compares with other steel bridge deck pavement schemes from functional, security, feature of environmental protection, travelling comfort, economic nature and has clear advantage, and construction convenience, efficient has obvious advantage to the major repair engineering that traffic pressure is big moreover, and the characteristics comparison is seen in table 5.
TABLE 5 UHPP-ME composite structures of the present invention
Compared with the characteristics of the domestic main steel bridge deck structure
The above embodiments are merely descriptions of the embodiments of the present invention, and not limitations to the spirit and scope of the present invention, and equivalent structures and direct or indirect applications of the technical solutions of the present invention by those skilled in the art should be within the scope of the present invention without departing from the design solutions of the present invention.
Claims (6)
1. The utility model provides a modular steel bridge deck pavement structure, includes steel bridge deck steel sheet, its characterized in that: a first modified epoxy resin layer, a first gravel layer, a second modified epoxy resin layer, a second gravel layer, a first waterproof bonding layer, a waterproof structural layer, a second waterproof bonding layer and a drainage type wearing layer are sequentially paved on the surface of the steel bridge deck steel plate from bottom to top;
the drainage type wearing layer is formed by paving stone mixed with high-molecular polymer asphalt, the porosity of the layer is more than 20%, and the thickness of the layer is 10-20 mm; the waterproof structure layer is formed by paving stone mixed with high-molecular polymer composite cross-linked high-performance modified asphalt, and the thickness of the waterproof structure layer is 30-50 mm;
in the waterproof structure layer, the performance indexes of the high-molecular polymer composite cross-linked high-performance modified asphalt are as follows: 100g at 25 ℃, 5s and the penetration degree of not less than 4 mm; the softening point (ring and ball method) is not less than 90 ℃; 5 ℃ and 5cm/min, and the ductility is not less than 25 cm; the solubility is not less than 99 percent; a flash point of not less than 230 ℃; at 25 ℃, the elastic recovery is not less than 90%, the viscotoughness is not less than 20N.m, and the needle penetration ratio is not less than 75%; the ductility is not less than 15cm at 5 ℃;
the modified epoxy resin is composed of 100 parts of a component A and 100 parts of a component B in parts by weight, wherein the preparation method of the component A comprises the following steps: adopting bisphenol A type epoxy resin and bisphenol F type epoxy resin, wherein the epoxy value is 0.20mol/100 g-0.60 mol/100g, carrying out end capping reaction with polyether Polyol (PIM) and grafted isocyanate (MPI) to produce hybrid epoxy resin with a flexible structure, and then compounding the hybrid epoxy resin with low-viscosity temperature-resistant special epoxy resin and polyethylene glycol glycidyl ether active diluent; wherein, for the specific weight percentage ratio of the bisphenol A type epoxy resin and the bisphenol F type epoxy resin, the limit requirements of the viscosity of the adhesive glue and the internal quality of the glue are set according to the air temperature of the construction environment, the bisphenol A type epoxy resin is 60-95 percent, and the bisphenol F type epoxy resin is 5-40 percent; the preparation method of the component B comprises the following steps: synthesizing high-purity dimer Acid (Acid) and aliphatic high amine (TETA), modifying with hydrogenated aromatic amine, wherein the addition amount of the hydrogenated aromatic amine is 5-25% of the total weight of the high-purity dimer Acid (Acid) and the aliphatic high amine (TETA), the reaction temperature is 80-120 ℃, the high-temperature resistant low-viscosity epoxy resin is used for bridging reaction, free amine is eliminated by an addition method, and the modified aromatic amine is compounded with functional additives; wherein, the specific weight percentage ratio of the high-purity dimer Acid (Acid) to the aliphatic high amine (TETA) is adjusted according to the requirement of the steel plate bridge environment and the change of the temperature environment, the high-purity dimer Acid (Acid) is 60-70%, and the aliphatic high amine (TETA) is 30-40%.
2. The modular steel deck pavement structure of claim 1, wherein: in the first modified epoxy resin layer, the modified epoxy resin is used in an amount of 1.0-1.5 kg/m2Uniformly spread on the surface of the steel plate.
3. The modular steel deck pavement structure of claim 1, wherein: in the second modified epoxy resin layer, the modified epoxy resin is used in an amount of 4.0-5.0 kg/m2Uniformly spreading on the surface of the first gravel layer.
4. The modular steel deck pavement structure of claim 1, wherein: in the first rubble layer and the second rubble layer, the rubble diameter is in 3 ~ 6 mm.
5. The modular steel deck pavement structure of claim 1, wherein: first modified epoxy resin layer, first rubble layer, the modified epoxy resin layer of second, second rubble layer have constituted modified epoxy rubble combination formula articulamentum, and the thickness of modified epoxy rubble combination formula articulamentum is 5 ~ 10 mm.
6. The modular steel deck pavement structure of claim 1, wherein: in the first modified epoxy resin layer and the second modified epoxy resin layer, the performance indexes of the modified epoxy resin are as follows: the adhesive force with the steel bridge deck steel plate is more than 5MPa, the compressive strength is more than 47.6MPa, the tensile strength (23 ℃) is more than 15.4MPa, the elongation (23 ℃) is more than 65%, the tensile strength (0 ℃) is more than 18.6MPa, the elongation (0 ℃) is more than 23%, the tensile modulus is more than 204MPa, and the water absorption (maximum value) is less than 0.1%.
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