CN112663505A - Construction method of main bridge steel structure - Google Patents
Construction method of main bridge steel structure Download PDFInfo
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- CN112663505A CN112663505A CN202011524548.8A CN202011524548A CN112663505A CN 112663505 A CN112663505 A CN 112663505A CN 202011524548 A CN202011524548 A CN 202011524548A CN 112663505 A CN112663505 A CN 112663505A
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- 238000010276 construction Methods 0.000 title claims abstract description 82
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 66
- 239000010959 steel Substances 0.000 title claims abstract description 66
- 239000004593 Epoxy Substances 0.000 claims abstract description 169
- 239000010410 layer Substances 0.000 claims abstract description 154
- 239000010426 asphalt Substances 0.000 claims abstract description 131
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 29
- 239000004917 carbon fiber Substances 0.000 claims abstract description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 21
- 239000011241 protective layer Substances 0.000 claims abstract description 18
- 238000010008 shearing Methods 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims description 72
- 239000011347 resin Substances 0.000 claims description 72
- 239000003822 epoxy resin Substances 0.000 claims description 63
- 229920000647 polyepoxide Polymers 0.000 claims description 63
- 239000000203 mixture Substances 0.000 claims description 43
- 238000003756 stirring Methods 0.000 claims description 34
- 239000004575 stone Substances 0.000 claims description 24
- 239000004567 concrete Substances 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000005336 cracking Methods 0.000 claims description 7
- 238000005422 blasting Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 6
- 239000011707 mineral Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
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- 229920005610 lignin Polymers 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 3
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- 238000003892 spreading Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
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Abstract
The invention discloses a construction method of a main bridge steel structure, which is characterized in that an epoxy asphalt carbon fiber protective layer, an epoxy asphalt macadam shearing layer, an epoxy asphalt concrete layer, a modified epoxy waterproof reinforcing layer and a modified epoxy macadam micro-surfacing layer are sequentially paved on a steel structure bridge deck to finish the construction of the steel structure bridge deck of a main bridge, the construction method of the main bridge steel structure has low requirement on the construction environment temperature, the construction at normal temperature and the curing at normal temperature are realized, the construction conditions are easy to reach, the construction is simple and convenient, and the steel structure bridge deck has strong fatigue resistance, high temperature resistance, water damage resistance, water resistance and corrosion resistance by paving six layers of protective structures on the steel structure bridge deck, so that the service life of the main bridge is prolonged, and meanwhile, the raw materials of the six layers of protective structures are common, so; according to the construction method, the laying construction is carried out through the bridge deck laying construction equipment, the automation degree of the bridge deck laying construction equipment is high, the construction efficiency is high, and the construction cost is low.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a construction method of a main bridge steel structure.
Background
From all the solid buildings of the bridge, bridge access abutments at two ends are boundary points of a route and the abutments, wherein a part of a bridge opening crossing a main obstacle (such as a river channel) is called a main bridge, the existing bridge adopts a steel structure as a main supporting structure, and the bridge deck of the steel structure bridge needs to be constructed, so that the physical performance of the bridge is improved.
When the existing bridge deck is constructed, a large amount of asphalt mixed raw materials are needed, so that a plurality of large tank trucks are needed to be transported from an asphalt mixed raw material production area, the consumed time is long, a paver is needed to level the bridge deck, and the construction cost is high.
Therefore, the problems to be solved by the invention are how to solve the problems that the time consumption is long during the transportation of raw materials when the bridge deck of the existing bridge is constructed, a paver is also needed to level the bridge deck, and the construction cost is high.
Therefore, the invention provides a small construction device which is convenient to transport and low in construction cost and is used for constructing the bridge deck.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a construction method of a main bridge steel structure, which comprises the following steps: by starting a driving motor, the driving motor runs through a universal driving shaft and a feeding cylinder to drive a spindle-shaped tank body to rotate, the stirring motor is started to run, the stirring motor drives a shunting stirring wheel to rotate, epoxy asphalt resin, mixture and modified epoxy resin are respectively conveyed into feed pipes of three bridge deck pavement construction equipment through a conveying pump, the epoxy asphalt resin, the mixture or the modified epoxy resin enters the feeding cylinder through a feed inlet after being shunted by the shunting stirring wheel and then falls into the spindle-shaped tank body, the rotating spindle-shaped tank body continuously shears the epoxy asphalt resin, the mixture or the modified epoxy resin through conveying shearing blades, the bridge deck pavement construction equipment is hung on a carrier through a mounting frame, the hanging angle of the mounting frame can be adjusted through an air cylinder on the carrier, and the bridge deck pavement construction equipment is moved to a steel structure bridge through the carrier, hang through cylinder adjustment mounting bracket and establish the angle, export the fusiform jar body from the bin outlet through carrying shearing leaf epoxy asphalt resin or mixture or modified epoxy, epoxy asphalt resin or mixture or modified epoxy fall to the bridge floor of steel construction bridge through going out the hopper, through starting the lift cylinder, the lift cylinder extends and drives the bracing piece and descend, thereby the high decline of flat compression roller has been driven, epoxy asphalt resin, the mixture, modified epoxy tiles to the bridge floor of steel construction bridge according to the order, it is long to consume during the raw materials transportation when the bridge floor of current bridge is under construction to have solved, still need the paver to level and smooth the bridge floor, the big problem of construction cost.
The purpose of the invention can be realized by the following technical scheme:
the construction method of the main bridge steel structure comprises the steps that the main bridge steel structure sequentially comprises a steel structure bridge, an epoxy asphalt carbon fiber protective layer, an epoxy asphalt macadam shear layer, an epoxy asphalt concrete layer, a modified epoxy waterproof reinforcing layer and a modified epoxy macadam micro-surfacing layer from bottom to top;
the epoxy asphalt carbon fiber protective layer consists of a first epoxy asphalt resin layer arranged on the bridge surface of the steel structure bridge and a carbon fiber cloth layer bonded on the first epoxy asphalt resin layer;
the epoxy asphalt macadam shear layer consists of a second epoxy asphalt resin layer arranged on the carbon fiber cloth layer and a macadam shear layer paved on the second epoxy asphalt resin layer;
the epoxy asphalt concrete layer is formed by solidifying a mixture which is arranged on the epoxy asphalt macadam shear layer and consists of epoxy asphalt resin, concrete aggregate, concrete filler and concrete fiber;
the modified epoxy waterproof reinforcing layer consists of a first modified epoxy resin layer arranged on the epoxy asphalt concrete layer and a grid anti-cracking cloth layer adhered on the first modified epoxy resin layer;
the modified epoxy macadam micro-surfacing layer consists of a second modified epoxy resin layer arranged on the modified epoxy waterproof reinforcing layer and a macadam micro-surfacing layer paved on the second modified epoxy resin layer;
the construction method of the main bridge steel structure comprises the following steps:
the method comprises the following steps: performing shot blasting cleaning and rust removing treatment on the bridge deck of the steel structure bridge, so that the cleanliness reaches Sa2.5 grade, and the roughness reaches 60-100 um;
step two: laying epoxy asphalt resin on the bridge surface of the cleaned steel structure bridge, wherein the laying amount is 0.4-0.6 kg per square meter, so as to form a first epoxy asphalt resin layer, and simultaneously fully sticking 3K200g carbon fiber cloth on the first epoxy asphalt resin layer for reinforcement, so as to form an epoxy asphalt carbon fiber protective layer;
step three: before the epoxy asphalt carbon fiber protective layer is uncured, epoxy asphalt resin is paved on the surface of the epoxy asphalt carbon fiber protective layer, the paving amount is 1.2-1.5 kg/square meter, a second epoxy asphalt resin layer is formed, meanwhile, crushed stone with the particle size of 4-6 mm is spread on the second epoxy asphalt resin layer, the crushed stone accounts for 20-30% of the surface area of the second epoxy asphalt resin layer, and an epoxy asphalt crushed stone shear layer is formed after curing;
step four: paving a mixture on the epoxy asphalt macadam shear layer to form an epoxy asphalt concrete layer;
step five: performing shot blasting cleaning on the surface of the cured epoxy asphalt concrete layer, removing dust, paving modified epoxy resin with the paving amount of 0.4-0.6 kg per square meter to form a first modified epoxy resin layer, and attaching grid anti-cracking cloth on the first modified epoxy resin layer to form a modified epoxy waterproof reinforcing layer;
step six: laying modified epoxy resin as a cementing material on the modified epoxy waterproof reinforcing layer, wherein the laying amount is 0.8-1.2 kg/square meter to form a second modified epoxy resin layer, spreading crushed stone with the particle size of 4-6 mm on the second modified epoxy resin layer to form a modified epoxy crushed stone micro-surfacing layer, and finishing the construction of the main bridge steel structure after the modified epoxy crushed stone micro-surfacing layer is cured.
As a further scheme of the invention: the thickness of the epoxy asphalt concrete layer is 30-50 mm; the concrete aggregate is a mixture of two or more of broken stones, gravels, slag, natural sand, artificial sand, stone chips, cement, mineral powder and fly ash, the concrete filler is mineral powder obtained by grinding limestone or magma, and the concrete fiber is a mixture of polyacrylonitrile fiber, polyester fiber and lignin fiber.
As a further scheme of the invention: and the epoxy asphalt resin, the mixed material and the modified epoxy resin are paved by bridge deck paving construction equipment.
As a further scheme of the invention: the bridge deck paving construction equipment comprises an asphalt paving mechanism and an asphalt flat pressing mechanism, wherein the asphalt flat pressing mechanism is arranged at the bottom of the asphalt paving mechanism;
wherein the asphalt laying mechanism comprises a mounting rack, a feeding pipe, an outer shell, a discharging hopper, supporting frames, a rotary drum, a driving motor, a track, a spindle-shaped tank body, a conveying shearing blade and an auxiliary roller, rotating wheels are arranged on two sides of the bottom of the mounting rack through rotating shafts, two supporting frames are arranged on the top of the mounting rack, the rotary drum is rotatably arranged on the tops of the two supporting frames, the outer shell is arranged right above the rotary drum, a shielding cover is arranged at one end of the outer shell, a triangular support is arranged on the top of one end of the mounting rack, a limiting support is arranged on one side of the supporting frame far away from the triangular support, a supporting base is arranged in an inner cavity of the limiting support, the bottom end of the outer shell is connected with the limiting support and the top ends of the two supporting frames, two sides of the bottom of, the discharge hopper is positioned right below the shielding cover;
the asphalt flat pressing mechanism comprises a balance weight balance block, a supporting rod, a lifting cylinder, a flat pressing roller and a reinforcing rod, wherein the supporting rod is installed at two ends of one side face of the balance weight balance block, the supporting rod is far away from the space between one end of the balance weight balance block and is rotatably installed with the flat pressing roller, the supporting rod is installed between the supporting rods, the reinforcing rod is installed between the supporting rods, the supporting rod top is installed with the lifting cylinder, and the lifting cylinder is installed at the top of the supporting rod and is provided with the lifting cylinder.
As a further scheme of the invention: the utility model discloses a rotary drum, including installing frame, pivot, spindle-shaped jar body, shear blade, universal driving shaft, linkage shaft, mounting bracket, installation base, install the auxiliary roller through the pivot on the installation base, two auxiliary rollers respectively with track bottom both sides roll connection, the track cup joints on the spindle-shaped jar body, the spindle-shaped jar body is installed in the inner chamber of a rotatory section of thick bamboo, install a plurality of on the internal wall of spindle-shaped jar and carry the shear blade, spindle-shaped jar body one end is provided with the bin outlet, the bin outlet is located out between hopper and the shield cover, a feeding section of thick bamboo is installed to the spindle-shaped jar body other end, a plurality of feed inlet has been seted up on the feeding section of thick bamboo outer wall, a feeding section of thick bamboo is kept away.
As a further scheme of the invention: the feeding tube is movably sleeved on the feeding cylinder, the bottom end of the feeding tube is fixedly installed on one of the supporting frames, the top end of the feeding tube penetrates through the outer shell, the stirring motor is installed on one side of the feeding tube, a shunting stirring wheel is installed on an output shaft of the stirring motor, and the shunting stirring wheel is located in an inner cavity of the feeding tube.
As a further scheme of the invention: the paving process of the bridge deck paving construction equipment is as follows:
the method comprises the following steps: the bridge deck paving construction equipment is hung on the carrier through the mounting frame, and the hanging angle of the mounting frame can be adjusted through the air cylinder on the carrier;
step two: starting a driving motor, wherein the driving motor runs to drive the spindle-shaped tank body to rotate through the linkage shaft and the feeding cylinder, and a stirring motor is started to run to drive a shunting stirring wheel to rotate;
step three: conveying the epoxy asphalt resin or the mixture or the modified epoxy resin into a feeding pipe through a conveying pump, and after the epoxy asphalt resin or the mixture or the modified epoxy resin is shunted by a shunting and stirring wheel, entering a feeding cylinder through a feeding hole and further falling into a spindle-shaped tank body;
step four: the rotating spindle-shaped tank body continuously shears the epoxy asphalt resin or the mixture or the modified epoxy resin by conveying the shearing blades;
step five: moving the bridge deck paving construction equipment to the bridge deck of the steel structure bridge through a carrier, adjusting the hanging angle of the mounting frame through a cylinder, outputting the epoxy asphalt resin or the mixture or the modified epoxy resin from a discharge port through a conveying shearing blade to form a fusiform tank body, and dropping the epoxy asphalt resin or the mixture or the modified epoxy resin onto the bridge deck of the steel structure bridge through a discharge hopper;
step six: and starting the lifting cylinder, wherein the lifting cylinder extends to drive the supporting rod to descend, so that the height of the flat pressing roller is driven to descend, and the epoxy asphalt resin or the mixture or the modified epoxy resin is tiled on the bridge deck of the steel structure bridge.
The invention has the beneficial effects that:
(1) according to the construction method of the main bridge steel structure, the epoxy asphalt carbon fiber protective layer, the epoxy asphalt macadam shearing layer, the epoxy asphalt concrete layer, the modified epoxy waterproof reinforcing layer and the modified epoxy macadam micro-surfacing layer are sequentially paved on the steel structure bridge deck, so that the construction of the steel structure bridge deck of the main bridge is completed, the construction method of the main bridge steel structure has low requirement on the construction environment temperature, the construction at normal temperature and the curing at normal temperature are realized, the construction conditions are easy to achieve, the construction is simple and convenient, the steel structure bridge deck is strong in fatigue resistance, high temperature resistance, water damage resistance, waterproof and anticorrosive by paving the six layers of protection structures on the steel structure bridge deck, the service life of the main bridge is prolonged, and meanwhile, the raw materials of the six layers of protection structures are common, so that the later maintenance is;
(2) the invention relates to a construction method of a main bridge steel structure, wherein epoxy asphalt resin, mixture and modified epoxy resin are paved by bridge deck paving construction equipment, a driving motor is started to operate and drive a spindle-shaped tank body to rotate through a linkage shaft and a feeding cylinder, a stirring motor is started to operate and drive a shunting stirring wheel to rotate, the epoxy asphalt resin, the mixture and the modified epoxy resin are respectively conveyed into feed pipes of three bridge deck paving construction equipment through a conveying pump, the epoxy asphalt resin or the mixture or the modified epoxy resin enters the feeding cylinder through a feed inlet after being shunted by the shunting stirring wheel and then falls into the spindle-shaped tank body, the rotating spindle-shaped tank body continuously shears the epoxy asphalt resin or the mixture or the modified epoxy resin through conveying shearing blades, and the bridge deck paving construction equipment is hung on a carrier through a mounting rack, the hanging angle of the mounting frame can be adjusted through the air cylinder on the carrier, the bridge deck paving construction equipment is moved to the bridge deck of the steel structure bridge through the carrier, the hanging angle of the mounting frame is adjusted through the air cylinder, the epoxy asphalt resin or the mixture or the modified epoxy resin is output from the discharge port through the conveying and shearing blade to form a fusiform tank body, the epoxy asphalt resin or the mixture or the modified epoxy resin falls onto the bridge deck of the steel structure bridge through the discharge hopper, the lifting air cylinder is started, the lifting air cylinder extends to drive the supporting rod to descend, so that the height of the flat pressing roller is driven to descend, and the epoxy asphalt resin, the mixture and the modified epoxy resin are sequentially paved onto the bridge deck of the steel structure bridge; this construction equipment is laid to bridge floor accomplishes the bridge floor automatically and lays the work progress, degree of automation is high, and the efficiency of construction is fast, can hang a plurality of bridge floor laying construction equipment and establish on a plurality of carrier moreover, and the simultaneous construction, the efficiency of construction is high, also can hang a plurality of bridge floor laying construction equipment according to production steps in proper order simultaneously and establish on same carrier, has reduced construction equipment's cost input, and construction cost is low, can require nimble the selection according to the construction.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a main bridge steel structure according to the present invention;
FIG. 2 is a schematic structural diagram of an epoxy pitch carbon fiber armor layer according to the present invention;
FIG. 3 is a schematic structural view of a shear layer of epoxy asphalt macadam according to the present invention;
FIG. 4 is a schematic structural view of a modified epoxy waterproof reinforcing layer according to the present invention;
FIG. 5 is a schematic structural view of a modified epoxy macadam micro-surfacing layer according to the present invention;
FIG. 6 is a schematic structural view of a deck pavement construction apparatus according to the present invention;
FIG. 7 is a schematic view of the construction of the asphalt paving mechanism of the present invention;
FIG. 8 is a schematic view showing an internal structure of an outer case according to the present invention;
FIG. 9 is a schematic view showing the internal structure of a side view of a rotary cylinder in the present invention;
FIG. 10 is a view showing the connection of the stirring motor and the divided stirring wheel in the present invention;
FIG. 11 is a schematic view showing an internal structure of a rotary cylinder according to the present invention;
FIG. 12 is a schematic view showing the internal structure of a fusiform tank according to the present invention;
FIG. 13 is an enlarged schematic view taken at A in FIG. 8 of the present invention;
FIG. 14 is a schematic structural view of an asphalt flattening mechanism according to the present invention;
FIG. 15 is a view showing the connection of the weight balance, the support rod, and the platen roller according to the present invention.
In the figure: 1. a steel structural bridge; 2. an epoxy asphalt carbon fiber protective layer; 3. an epoxy asphalt macadam shear layer; 4. an epoxy asphalt concrete layer; 5. a modified epoxy waterproof reinforcing layer; 6. a modified epoxy macadam micro-surfacing layer; 21. a first epoxy asphalt resin layer; 22. a carbon fiber cloth layer; 31. a second epoxy asphalt resin layer; 32. a gravel shear layer; 51. a first modified epoxy resin layer; 52. a grid anti-cracking cloth layer; 61. a second modified epoxy resin layer; 62. a macadam micro-surfacing layer; 100. an asphalt laying mechanism; 200. an asphalt flat pressing mechanism; 101. a mounting frame; 102. a feed tube; 103. an outer housing; 104. a shield cover; 105. a discharge hopper; 106. a triangular bracket; 107. a support frame; 108. a rotating wheel; 109. a rotary drum; 110. a support base; 111. a limiting bracket; 112. a drive motor; 113. a track; 114. a stirring motor; 115. a feeding cylinder; 116. a linkage shaft; 117. a flow dividing and stirring wheel; 118. a fusiform tank body; 119. a feed inlet; 120. conveying the cut leaves; 121. a discharge outlet; 122. installing a base; 123. an auxiliary roller; 201. a counterweight balance block; 202. a support bar; 203. a lifting cylinder; 204. a flat pressing roll; 205. and a reinforcing rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1 to 5, in the embodiment, a construction method of a main bridge steel structure is provided, where the main bridge steel structure sequentially includes, from bottom to top, a steel structure bridge 1, an epoxy asphalt carbon fiber protective layer 2, an epoxy asphalt macadam shear layer 3, an epoxy asphalt concrete layer 4, a modified epoxy waterproof reinforcing layer 5, and a modified epoxy macadam micro-surfacing layer 6;
the epoxy asphalt carbon fiber protective layer 2 consists of a first epoxy asphalt resin layer 21 arranged on the bridge deck of the steel structure bridge 1 and a carbon fiber cloth layer 22 bonded on the first epoxy asphalt resin layer 21;
the epoxy asphalt macadam shear layer 3 consists of a second epoxy asphalt resin layer 31 arranged on the carbon fiber cloth layer 22 and a macadam shear layer 32 laid on the second epoxy asphalt resin layer 31;
the epoxy asphalt concrete layer 4 is formed by solidifying a mixture which is arranged on the epoxy asphalt macadam shear layer 3 and consists of epoxy asphalt resin, concrete aggregate, concrete filler and concrete fiber;
the modified epoxy waterproof reinforcing layer 5 consists of a first modified epoxy resin layer 51 arranged on the epoxy asphalt concrete layer 4 and a grid anti-cracking cloth layer 52 adhered on the first modified epoxy resin layer 51;
the modified epoxy macadam micro-surfacing layer 6 consists of a second modified epoxy resin layer 61 arranged on the modified epoxy waterproof reinforcing layer 5 and a macadam micro-surfacing layer 62 paved on the second modified epoxy resin layer 61;
the construction method of the main bridge steel structure comprises the following steps:
the method comprises the following steps: performing shot blasting cleaning and rust removing treatment on the bridge deck of the steel structure bridge 1, so that the cleanliness reaches Sa2.5 level and the roughness reaches 60-100 um;
step two: laying epoxy asphalt resin on the bridge surface of the cleaned steel structure bridge 1, wherein the laying amount is 0.4-0.6 kg per square meter, so as to form a first epoxy asphalt resin layer 21, and simultaneously fully sticking 3K200g carbon fiber cloth on the first epoxy asphalt resin layer 21 for reinforcement, so as to form an epoxy asphalt carbon fiber protective layer 2;
step three: before the epoxy asphalt carbon fiber protective layer 2 is not cured, epoxy asphalt resin is paved on the surface of the epoxy asphalt carbon fiber protective layer, the paving amount is 1.2-1.5 kg/square meter, a second epoxy asphalt resin layer 31 is formed, meanwhile, crushed stone with the particle size of 4-6 mm is spread on the second epoxy asphalt resin layer 31, the crushed stone accounts for 20-30% of the surface area of the second epoxy asphalt resin layer 31, and an epoxy asphalt crushed stone shear layer 3 is formed after curing;
step four: laying a mixture on the epoxy asphalt macadam shear layer 3 to form an epoxy asphalt concrete layer 4;
step five: performing shot blasting cleaning on the surface of the cured epoxy asphalt concrete layer 4, removing dust, paving modified epoxy resin with the paving amount of 0.4-0.6 kg per square meter to form a first modified epoxy resin layer 51, and attaching grid anti-cracking cloth on the first modified epoxy resin layer 51 to form a modified epoxy waterproof reinforcing layer 5;
step six: laying modified epoxy resin as a cementing material on the modified epoxy waterproof reinforcing layer 5, wherein the laying amount is 0.8-1.2 kg/square meter to form a second modified epoxy resin layer 61, spreading crushed stone with the particle size of 4-6 mm on the second modified epoxy resin layer 61 to form a modified epoxy crushed stone micro-surfacing layer 6, and finishing the construction of the main bridge steel structure after the modified epoxy crushed stone micro-surfacing layer is cured.
The thickness of the epoxy asphalt concrete layer 4 is 30-50 mm; the concrete aggregate is a mixture of two or more of broken stones, gravels, slag, natural sand, artificial sand, stone chips, cement, mineral powder and fly ash, the concrete filler is mineral powder obtained by grinding limestone or magma, and the concrete fiber is a mixture of polyacrylonitrile fiber, polyester fiber and lignin fiber.
And the epoxy asphalt resin, the mixed material and the modified epoxy resin are paved by bridge deck paving construction equipment.
Example 2:
referring to fig. 6 to 15, the bridge deck pavement construction equipment in embodiment 1 includes an asphalt paving mechanism 100 and an asphalt flat pressing mechanism 200, wherein the asphalt flat pressing mechanism 200 is installed at the bottom of the asphalt paving mechanism 100;
wherein, the asphalt paving mechanism 100 comprises an installation frame 101, a feeding pipe 102, an outer shell 103, a discharge hopper 105, support frames 107, a rotary drum 109, a driving motor 112, a track 113, a fusiform tank body 118, a conveying shear blade 120 and an auxiliary roller 123, wherein two sides of the bottom of the installation frame 101 are respectively provided with a rotating wheel 108 through a rotating shaft, two support frames 107 are installed at the top of the installation frame 101, the top of the two support frames 107 is rotatably provided with the rotary drum 109, the outer shell 103 is arranged right above the rotary drum 109, one end of the outer shell 103 is provided with a shielding cover 104, the top of one end of the installation frame 101 is provided with a triangular support 106, one side of the support frame 107 far away from the triangular support 106 is provided with a limit support 111, a support base 110 is installed in the inner cavity of the limit support 111, and the bottom end, two sides of the bottom of the shielding cover 104 are respectively connected to the top ends of two sides of a triangular support 106, a discharge hopper 105 is mounted in the middle of the top of the triangular support 106, and the discharge hopper 105 is positioned right below the shielding cover 104;
the two sides of the top of the mounting rack 101 are both provided with mounting bases 122, the mounting bases 122 are provided with auxiliary rollers 123 through rotating shafts, the two auxiliary rollers 123 are respectively connected with the two sides of the bottom of the track 113 in a rolling manner, the rail 113 is sleeved on a spindle-shaped tank body 118, the spindle-shaped tank body 118 is arranged in the inner cavity of the rotary cylinder 109, a plurality of conveying shearing blades 120 are arranged on the inner wall of the fusiform tank body 118, one end of the fusiform tank body 118 is provided with a discharge outlet 121, the discharge port 121 is positioned between the discharge hopper 105 and the shielding cover 104, the other end of the fusiform tank body 118 is provided with a feed cylinder 115, a plurality of feed inlets 119 are arranged on the outer wall of the feed cylinder 115, a linkage shaft 116 is arranged at one end of the feed cylinder 115 far away from the fusiform tank body 118, one end of the linkage shaft 116, which is far away from the feeding cylinder 115, is connected to an output shaft of a driving motor 112, and the driving motor 112 is installed at the top of the supporting base 110;
the feeding cylinder 115 is movably sleeved with a feeding pipe 102, the bottom end of the feeding pipe 102 is fixedly mounted on one of the supporting frames 107, the top end of the feeding pipe 102 penetrates through the outer shell 103, a stirring motor 114 is mounted on one side of the feeding pipe 102, a shunting stirring wheel 117 is mounted on an output shaft of the stirring motor 114, and the shunting stirring wheel 117 is located in an inner cavity of the feeding pipe 102;
wherein, pitch concora crush mechanism 200 includes counter weight balancing piece 201, bracing piece 202, lift cylinder 203, concora crush roller 204, stiffener 205, bracing piece 202, two are all installed at the both ends of 201 side of counter weight balancing piece 202 is kept away from and is rotated between 201 one end of counter weight balancing piece and install concora crush roller 204, two install a plurality of stiffener 205, two between the bracing piece 202 a plurality of lift cylinder 203, a plurality of are installed at bracing piece 202 top the bottom at mounting bracket 101 is all installed at the top of lift cylinder 203.
Referring to fig. 1 to 15, the paving process of the bridge deck paving construction equipment in the embodiment is as follows:
the method comprises the following steps: the bridge deck paving construction equipment is hung on a carrier through a mounting frame 101, and the hanging angle of the mounting frame 101 can be adjusted through an air cylinder on the carrier;
step two: starting a driving motor 112, wherein the driving motor 112 operates to drive a spindle-shaped tank body 118 to rotate through a linkage shaft 116 and a feeding cylinder 115, starting a stirring motor 114 to operate, and the stirring motor 114 drives a shunting stirring wheel 117 to rotate;
step three: conveying the epoxy asphalt resin or the mixture or the modified epoxy resin into the feeding pipe 102 by a conveying pump, shunting the epoxy asphalt resin or the mixture or the modified epoxy resin by a shunting stirring wheel 117, and then entering a feeding cylinder 115 through a feeding hole 119 to fall into a spindle-shaped tank body 118;
step four: the rotating fusiform tank 118 continuously shears the epoxy asphalt resin or the mixture or the modified epoxy resin through the conveying shearing blade 120;
step five: moving the bridge deck paving construction equipment to the bridge deck of the steel structure bridge 1 through a carrier, adjusting the hanging angle of the mounting frame 101 through a cylinder, outputting the epoxy asphalt resin or the mixture or the modified epoxy resin from the discharge port 121 to the fusiform tank body 118 through the conveying shearing blade 120, and dropping the epoxy asphalt resin or the mixture or the modified epoxy resin onto the bridge deck of the steel structure bridge 1 through the discharge hopper 105;
step six: and starting the lifting cylinder 203, wherein the lifting cylinder 203 extends to drive the supporting rod 202 to descend, so that the height of the flat pressing roller 204 is driven to descend, and the epoxy asphalt resin or the mixture or the modified epoxy resin is paved on the bridge deck of the steel structure bridge 1.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (7)
1. The construction method of the main bridge steel structure is characterized in that the main bridge steel structure sequentially comprises a steel structure bridge (1), an epoxy asphalt carbon fiber protective layer (2), an epoxy asphalt macadam shear layer (3), an epoxy asphalt concrete layer (4), a modified epoxy waterproof reinforcing layer (5) and a modified epoxy macadam micro-surfacing layer (6) from bottom to top;
the epoxy asphalt carbon fiber protective layer (2) is composed of a first epoxy asphalt resin layer (21) arranged on the bridge surface of the steel structure bridge (1) and a carbon fiber cloth layer (22) bonded on the first epoxy asphalt resin layer (21);
the epoxy asphalt macadam shear layer (3) is composed of a second epoxy asphalt resin layer (31) arranged on the carbon fiber cloth layer (22) and a macadam shear layer (32) laid on the second epoxy asphalt resin layer (31);
the epoxy asphalt concrete layer (4) is formed by solidifying a mixture consisting of epoxy asphalt resin, concrete aggregate, concrete filler and concrete fiber and arranged on the epoxy asphalt macadam shear layer (3);
the modified epoxy waterproof reinforcing layer (5) is composed of a first modified epoxy resin layer (51) arranged on the epoxy asphalt concrete layer (4) and a grid anti-cracking cloth layer (52) adhered on the first modified epoxy resin layer (51);
the modified epoxy macadam micro-surfacing layer (6) consists of a second modified epoxy resin layer (61) arranged on the modified epoxy waterproof reinforcing layer (5) and a macadam micro-surfacing layer (62) paved on the second modified epoxy resin layer (61);
the construction method of the main bridge steel structure comprises the following steps:
the method comprises the following steps: performing shot blasting cleaning and rust removing treatment on the bridge deck of the steel structure bridge (1) to ensure that the cleanliness reaches Sa2.5 level and the roughness reaches 60-100 um;
step two: paving epoxy asphalt resin on the bridge surface of the cleaned steel structure bridge (1), wherein the paving amount is 0.4-0.6 kg per square meter, forming a first epoxy asphalt resin layer (21), and simultaneously fully sticking 3K200g carbon fiber cloth on the first epoxy asphalt resin layer (21) for reinforcement to form an epoxy asphalt carbon fiber protective layer (2);
step three: before the epoxy asphalt carbon fiber protective layer (2) is not cured, epoxy asphalt resin is paved on the surface of the epoxy asphalt carbon fiber protective layer, the paving amount is 1.2-1.5 kg/square meter, a second epoxy asphalt resin layer (31) is formed, meanwhile, broken stone with the particle size of 4-6 mm is spread on the second epoxy asphalt resin layer (31), the broken stone accounts for 20-30% of the surface area of the second epoxy asphalt resin layer (31), and an epoxy asphalt broken stone shear layer (3) is formed after curing;
step four: laying a mixture on the epoxy asphalt macadam shear layer (3) to form an epoxy asphalt concrete layer (4);
step five: performing shot blasting cleaning on the surface of the cured epoxy asphalt concrete layer (4), removing dust, paving modified epoxy resin with the paving amount of 0.4-0.6 kg per square meter to form a first modified epoxy resin layer (51), and attaching grid anti-cracking cloth on the first modified epoxy resin layer (51) to form a modified epoxy waterproof reinforcing layer (5);
step six: laying modified epoxy resin as a cementing material on the modified epoxy waterproof reinforcing layer (5), wherein the laying amount is 0.8-1.2 kg per square meter to form a second modified epoxy resin layer (61), spreading crushed stone with the particle size of 4-6 mm on the second modified epoxy resin layer (61) to form a modified epoxy crushed stone micro-surfacing layer (6), and finishing the construction of the main bridge steel structure after the modified epoxy crushed stone micro-surfacing layer is cured.
2. The construction method of the main bridge steel structure according to claim 1, wherein the thickness of the epoxy asphalt concrete layer (4) is 30-50 mm; the concrete aggregate is a mixture of two or more of broken stones, gravels, slag, natural sand, artificial sand, stone chips, cement, mineral powder and fly ash, the concrete filler is mineral powder obtained by grinding limestone or magma, and the concrete fiber is a mixture of polyacrylonitrile fiber, polyester fiber and lignin fiber.
3. The construction method of the main bridge steel structure according to claim 1, wherein the epoxy asphalt resin, the mixed material and the modified epoxy resin are paved by bridge deck paving construction equipment.
4. The construction method of the main bridge steel structure according to the claim 3, characterized in that the construction equipment of the bridge deck pavement comprises an asphalt paving mechanism (100) and an asphalt flat pressing mechanism (200), wherein the asphalt paving mechanism (100) is provided with the asphalt flat pressing mechanism (200) at the bottom;
wherein the asphalt paving mechanism (100) comprises an installation frame (101), a feeding pipe (102), an outer shell (103), a discharging hopper (105), a support frame (107), a rotary drum (109), a driving motor (112), a track (113), a spindle-shaped tank body (118), conveying shearing blades (120) and auxiliary rollers (123), rotating wheels (108) are installed on two sides of the bottom of the installation frame (101) through rotating shafts, two support frames (107) are installed at the top of the installation frame (101), the rotary drum (109) is installed at the top of the two support frames (107), the outer shell (103) is arranged right above the rotary drum (109), a shielding cover (104) is installed at one end of the outer shell (103), a triangular support (106) is installed at the top of one end of the installation frame (101), and a limiting support (111) is installed on one side of the support frame (107) far away from, a supporting base (110) is installed in an inner cavity of the limiting support (111), the bottom end of the outer shell (103) is connected with the limiting support (111) and the top ends of the two supporting frames (107), two sides of the bottom of the shielding cover (104) are respectively connected to the top ends of two sides of the triangular support (106), a discharge hopper (105) is installed in the middle of the top of the triangular support (106), and the discharge hopper (105) is located right below the shielding cover (104);
wherein, pitch concora crush mechanism (200) is including counter weight balancing piece (201), bracing piece (202), lift cylinder (203), concora crush roller (204), anchor strut (205), bracing piece (202), two are all installed at the both ends of counter weight balancing piece (201) one side bracing piece (202) are kept away from to rotate between counter weight balancing piece (201) one end and are installed concora crush roller (204), two install a plurality of anchor strut (205), two between bracing piece (202) a plurality of lift cylinder (203), a plurality of the top of bracing piece (202) is all installed in the bottom of mounting bracket (101).
5. The construction method of the main bridge steel structure according to claim 4, characterized in that mounting bases (122) are mounted on two sides of the top of the mounting frame (101), auxiliary rollers (123) are mounted on the mounting bases (122) through rotating shafts, the two auxiliary rollers (123) are respectively connected with two sides of the bottom of a rail (113) in a rolling manner, the rail (113) is sleeved on the fusiform tank body (118), the fusiform tank body (118) is mounted in an inner cavity of the rotating cylinder (109), a plurality of conveying shearing blades (120) are mounted on the inner wall of the fusiform tank body (118), one end of the fusiform tank body (118) is provided with a discharge port (121), the discharge port (121) is located between the discharge hopper (105) and the shielding cover (104), the other end of the fusiform tank body (118) is provided with a feeding cylinder (115), the outer wall of the feeding cylinder (115) is provided with a plurality of feeding ports (119), one end, far away from the fusiform tank body (118), of the feeding barrel (115) is provided with a linkage shaft (116), one end, far away from the feeding barrel (115), of the linkage shaft (116) is connected to an output shaft of a driving motor (112), and the driving motor (112) is installed at the top of the supporting base (110).
6. The construction method of the main bridge steel structure according to claim 5, wherein a feeding pipe (102) is movably sleeved on the feeding cylinder (115), the bottom end of the feeding pipe (102) is fixedly installed on one of the supporting frames (107), the top end of the feeding pipe (102) penetrates through the outer shell (103), a stirring motor (114) is installed on one side of the feeding pipe (102), a shunting stirring wheel (117) is installed on an output shaft of the stirring motor (114), and the shunting stirring wheel (117) is located in an inner cavity of the feeding pipe (102).
7. The construction method of the main bridge steel structure according to claim 3, wherein the paving process of the bridge deck paving construction equipment is as follows:
the method comprises the following steps: the bridge deck paving construction equipment is hung on a carrier through a mounting frame (101), and the hanging angle of the mounting frame (101) can be adjusted through an air cylinder on the carrier;
step two: starting a driving motor (112), wherein the driving motor (112) runs to drive a spindle-shaped tank body (118) to rotate through a linkage shaft (116) and a feeding cylinder (115), a stirring motor (114) is started to run, and the stirring motor (114) drives a shunting stirring wheel (117) to rotate;
step three: conveying the epoxy asphalt resin or the mixture or the modified epoxy resin into a feeding pipe (102) through a conveying pump, shunting the epoxy asphalt resin or the mixture or the modified epoxy resin by a shunting stirring wheel (117), and then entering a feeding cylinder (115) through a feeding hole (119) to further fall into a spindle-shaped tank body (118);
step four: the rotating spindle-shaped tank body (118) continuously shears the epoxy asphalt resin or the mixture or the modified epoxy resin through the conveying shearing blade (120);
step five: moving the bridge deck paving construction equipment to the bridge deck of the steel structure bridge (1) through a carrier, adjusting the hanging angle of the mounting rack (101) through a cylinder, outputting epoxy asphalt resin or mixture or modified epoxy resin from a discharge port (121) to a fusiform tank body (118) through a conveying shearing blade (120), and dropping the epoxy asphalt resin or mixture or modified epoxy resin onto the bridge deck of the steel structure bridge (1) through a discharge hopper (105);
step six: and starting the lifting cylinder (203), wherein the lifting cylinder (203) extends to drive the supporting rod (202) to descend, so that the height of the flat pressing roller (204) is reduced, and the epoxy asphalt resin or the mixture or the modified epoxy resin is tiled on the bridge deck of the steel structure bridge (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011524548.8A CN112663505A (en) | 2020-12-22 | 2020-12-22 | Construction method of main bridge steel structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011524548.8A CN112663505A (en) | 2020-12-22 | 2020-12-22 | Construction method of main bridge steel structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115094751A (en) * | 2022-05-27 | 2022-09-23 | 浙江长兴市政建设有限公司 | Steel bridge deck pavement structure and paving method based on double-layer waterproof technology |
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