CN114293480B - Active hollow slab bridge comprehensive reinforcement structure and construction method - Google Patents
Active hollow slab bridge comprehensive reinforcement structure and construction method Download PDFInfo
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- CN114293480B CN114293480B CN202111590412.1A CN202111590412A CN114293480B CN 114293480 B CN114293480 B CN 114293480B CN 202111590412 A CN202111590412 A CN 202111590412A CN 114293480 B CN114293480 B CN 114293480B
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- 238000010276 construction Methods 0.000 title claims abstract description 63
- 230000002787 reinforcement Effects 0.000 title claims description 21
- 239000004567 concrete Substances 0.000 claims abstract description 62
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- 230000001360 synchronised effect Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000004593 Epoxy Substances 0.000 claims abstract description 10
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 10
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 238000007788 roughening Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 230000008439 repair process Effects 0.000 claims description 22
- 238000004321 preservation Methods 0.000 claims description 14
- 229920000742 Cotton Polymers 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 6
- 239000011384 asphalt concrete Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 13
- 230000003014 reinforcing effect Effects 0.000 abstract description 7
- 241000219146 Gossypium Species 0.000 description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004382 potting Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
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Abstract
The invention relates to an active hollow slab bridge comprehensive reinforcing structure and a construction method, comprising the following steps: step one, preparing construction; repairing and constructing the bent cap; step three, chiseling bridge floor concrete; fourthly, repairing and constructing hinge joints; step five, bridge deck repairing construction; step six, bridge deck concrete low-temperature maintenance construction; and seventhly, grouting and repairing construction of the crack of the beam bottom. The capping beam honeycomb pitting surface repairing adopts the self-hanging fixed roughening modified epoxy concrete or polymer mortar repairing construction platform, the hinge joint treatment adopts the integrally formed conjoined gate-shaped steel bar and hinge joint steel bar net positioning device, the bridge deck concrete insulation adopts the low-temperature environment movable easy-to-retract curing shed, the beam bottom crack grouting repairing adopts the multi-point synchronous filling and sealing device, the operation is simple, the construction speed is accelerated, and the labor is saved.
Description
Technical Field
The invention relates to an active hollow slab bridge reinforcing system, in particular to an active hollow slab bridge comprehensive reinforcing structure and a construction method.
Background
Along with the development of economy in China, along with the increasing of old bridges, the old bridges gradually have more and more diseases, so that in order to ensure the operation safety of the bridges, the reinforcement of the hinge joints, the bent caps, the crack diseases of the bottom plates of the bridges and the like of the active hollow slab bridges is conducted in depth, but the construction speed of an operation platform, the installation and positioning of a hinge joint reinforcing steel bar net, the low-temperature maintenance and the like in the reinforcement process is low, the cost is high, the reinforcement quality is difficult to ensure and the like.
In summary, aiming at the existing active hollow slab bridge reinforcing system, it is important to seek an active hollow slab bridge comprehensive reinforcing structure with fast construction speed, fast installation of an operation platform, accurate installation and positioning of a hinge joint reinforcing steel bar net and repeated use and a construction method thereof.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an active hollow slab bridge comprehensive reinforcing structure and a construction method.
The construction method of the active hollow slab bridge comprehensive reinforcing structure comprises the following steps:
step one, construction preparation: the relevant components of the active hollow slab bridge comprehensive reinforcement structure are processed and manufactured in a centralized way in a factory;
Step two, repairing and constructing a capping beam: the capping beam repairing area adopts a self-hanging fixed roughening modified epoxy concrete or polymer mortar repairing construction platform, and an upper beam, a middle beam and a lower beam are connected through a vertical beam at the side close to the capping beam, wherein the upper beam and the middle beam are fixed on the capping beam, and an adjustable screw rod is arranged on the middle beam and supported on a pier column; the worker carries out the construction of the bent cap repair area on the construction platform;
Step three, bridge floor concrete chisel removes: ejecting an accurate reserved position by adopting an ink line, and cutting by using a concrete cutting machine; crushing and chiseling the cutting positions on the two sides of the expansion joint position by using a rock drill;
Fourth, hinge joint repairing construction: the door-shaped steel bars are uniformly arranged above the hinge joints, hinge joint steel bar meshes are arranged inside the hinge joints, U-shaped buckles of the positioning support are clamped on the door-shaped steel bars, the U-shaped fixing frames of the positioning support fix the hinge joint steel bar meshes, workers move the positioning support through handles, and concrete is poured after the fixation of the hinge joint steel bar meshes is completed;
Step five, bridge deck repairing construction: leveling the top surface of the expansion joint and the asphalt concrete pavement, wherein the slurry is 1-2mm lower than the pavement after slurry collection, and trowelling by a ruler before concrete solidification;
Step six, bridge floor concrete low-temperature maintenance construction: the bridge deck repairing concrete is maintained by adopting a movable easily-retractable curing shed in a low-temperature environment for heat preservation;
Step seven, grouting repairing construction of beam bottom cracks: a slip shaft is arranged on a grouting support of the multipoint synchronous filling and sealing device, a movable grouting head is arranged on the slip shaft, and the position of the movable grouting head on the slip shaft is adjusted according to the trend of a crack at the bottom of the beam; and a vertical rod is arranged at the lower part of the grouting support, and a worker moves the grouting support through the vertical rod to perform grouting repair on the crack at the bottom of the beam.
Preferably, in the second step, square steel is arranged at the upper part of the lower cross beam, and a steel plate and a safety guardrail are arranged at the upper part of the square steel; the outer sides of the upper cross beam and the lower cross beam are connected through a suspender.
In the fourth step, the positioning support mainly comprises a handle, a middle position stay bar, a U-shaped fixing frame, a U-shaped buckle and a support connecting rod, the handle is welded on the upper portion of the support connecting rod, the U-shaped fixing frame and the U-shaped buckle are welded on the lower portion of the support connecting rod, the middle position stay bar is uniformly arranged on the U-shaped fixing frame, and the middle position stay bar is supported on concrete on two sides of the hinge joint.
In the step six, the movable easy-to-retract curing shed in the low-temperature environment mainly comprises a movable concrete heat-preserving shed support, heat-preserving cotton and pulleys, wherein the movable concrete heat-preserving shed support is processed in a factory and assembled on site, the pulleys are arranged at the lower part of the movable concrete heat-preserving shed support, and the heat-preserving cotton covers the surface of the movable concrete heat-preserving shed support.
Preferably, in the seventh step, a fixing ring is arranged on the grouting support of the multipoint synchronous filling and sealing device; the movable grouting head is connected with the grouting main pipe through a grouting hose, wherein the grouting main pipe is connected to the grouting support through a fixing ring.
The comprehensive reinforcement structure of the active hollow slab bridge is constructed according to the construction method.
The beneficial effects of the invention are as follows:
1. the active hollow slab bridge comprehensive reinforcement system component is prefabricated in factories, has high construction speed, is assembled on site, can be reused and reduces construction cost.
2. The capping beam honeycomb pitting surface repairing adopts the self-hanging fixed roughening modified epoxy concrete or polymer mortar repairing construction platform, the hinge joint treatment adopts the integrally formed conjoined gate-shaped steel bar and hinge joint steel bar net positioning device, the bridge deck concrete insulation adopts the low-temperature environment movable easy-to-retract curing shed, the beam bottom crack grouting repairing adopts the multi-point synchronous filling and sealing device, the operation is simple, the construction speed is accelerated, and the labor is saved.
3. The self-hanging fixed roughening modified epoxy concrete or polymer mortar repairing construction platform, the positioning support and the multi-point synchronous filling and sealing device are matched with each other to realize the comprehensive reinforcement of the active hollow slab bridge, so that the self-hanging fixed roughening modified epoxy concrete or polymer mortar repairing construction platform is reasonable in structure, economical and effective, and the construction quality of reinforcement of the cover beam, hinge joints and bottom plate cracks of the active hollow slab bridge is effectively ensured.
Drawings
FIG. 1 is a schematic elevation view of an active hollow slab bridge comprehensive reinforcement system;
FIG. 2 is a schematic plan view of an active hollow slab bridge comprehensive reinforcement system;
FIG. 3 is a schematic view of a capping beam repair operation platform in a mounted horizontal elevation;
FIG. 4 is a schematic view of a longitudinal elevation of a capping beam repair operating platform;
FIG. 5 is a schematic diagram of a hinge joint repair bulk sample;
FIG. 6 is a schematic diagram of a positioning scaffold;
FIG. 7 is a schematic plan view of a multi-point synchronous potting apparatus;
FIG. 8 is a schematic elevation view of a multi-point synchronous potting apparatus;
FIG. 9 is a schematic diagram of a mobile retractable curing shelter in a low temperature environment;
fig. 10 is a flow chart of the construction process of the present invention.
Reference numerals illustrate: 1-gravity type U-shaped bridge abutment, 2-bench body, 3-active hollow slab bridge, 4-taper slope, 5-expansion joint, 6-hinge joint, 7-bent cap, 8-safety fence, 9-lower beam, 10-square steel, 11-bent cap repair area, 12-pier stud, 13-suspender, 14-vertical beam, 15-upper beam, 16-adjustable screw, 17-steel plate, 18-locating bracket, 19-door-shaped reinforcing steel bar, 20-hinge joint reinforcing steel mesh, 21-concrete, 22-plugging piece, 23-handle, 24-middle position stay, 25-U-shaped fixing frame, 26-U-shaped buckle, 27-movable grouting head, 28-sliding shaft, 29-grouting bracket, 30-grouting main pipe, 31-grouting hose, 32-vertical rod, 33-low temperature environment movable concrete heat preservation shed, 34-movable concrete heat preservation shed bracket, 35-heat preservation cotton, 36-middle beam, 37-bracket connecting rod, 38-pulley, 39-fixed ring.
Detailed Description
The invention is further described below with reference to examples. The following examples are presented only to aid in the understanding of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
As an embodiment, the construction method of the active hollow slab bridge comprehensive reinforcement structure mainly comprises the following construction steps:
step one, construction preparation: the relevant components of the active hollow slab bridge comprehensive reinforcement structure are processed and manufactured in a centralized way in a factory;
Step two, repairing and constructing a capping beam: the capping beam repair area 11 adopts a self-hanging fixed roughening modified epoxy concrete or polymer mortar repair construction platform, the structure of the capping beam repair area 11 comprises a safety barrier 8, a lower beam 9, square steel 10, a capping beam repair area 11, pier columns 12, a suspender 13, a vertical beam 14, an upper beam 15, an adjustable screw 16, a steel plate 17, a middle beam 36 and the like, the upper beam 15, the middle beam 36 and the lower beam 9 are connected close to the capping beam side through the vertical beam 14, the upper beam 15 and the middle beam 36 are fixed on the capping beam, and the middle beam 36 is provided with an adjustable screw 16 to be supported on the pier columns 12; square steel 10 is arranged at the upper part of the lower cross beam 9, and a steel plate 17 and a safety barrier 8 are arranged at the upper part of the square steel 10; the outer sides of the upper cross beam 15 and the lower cross beam 9 are connected through a hanging rod 13; the worker performs the construction of the capping beam repair area 11 on the construction platform.
Step three, bridge floor concrete chisel removes: the accurate reserved position is popped up by adopting the ink line, the concrete cutting machine is used for cutting, and the bridge deck pavement layer edge is ensured to be neat and smooth without defects during cutting. And then crushing the cutting parts on the two sides of the expansion joint position by using a rock drill, and chiseling.
Fourth, hinge joint repairing construction: the positioning bracket 18 consists of a handle 23, a middle support rod 24, a U-shaped fixing bracket 25, a U-shaped buckle 26 and a bracket connecting rod 37, wherein the handle 23 is welded on the upper part of the bracket connecting rod 37, the U-shaped fixing bracket 25 and the U-shaped buckle 26 are welded on the lower part of the bracket connecting rod 37, the support rods 24 are uniformly arranged on the U-shaped fixing bracket 25, and the support rods 24 are supported on concrete on two sides of the hinge joint 6; the door-shaped steel bars 19 are uniformly arranged above the hinge joints 6, the hinge joint steel bar meshes 20 are arranged inside the hinge joints 6, U-shaped buckles 26 of the positioning support 18 are clamped on the door-shaped steel bars 19, U-shaped fixing frames 25 of the positioning support 18 fix the hinge joint steel bar meshes 20, workers move the positioning support 18 through handles 23, and concrete is poured after the fixing of the hinge joint steel bar meshes 20 is completed.
Step five, bridge deck repairing construction: the concrete pavement is leveled with the top surface of the expansion joint and the asphalt concrete pavement, the slurry is slightly lower than the pavement by 1-2mm after the slurry is collected, and the concrete is leveled at least twice by a ruler before solidification of the concrete to ensure the flatness.
Step six, bridge floor concrete low-temperature maintenance construction: the movable easy-to-retract curing shed 33 in the low-temperature environment consists of a movable concrete thermal insulation shed bracket 34, thermal insulation cotton 35 and pulleys 38, wherein the movable concrete thermal insulation shed bracket 34 is processed in a factory, assembled on site, and the pulleys 38 are arranged at the lower part of the movable concrete thermal insulation shed bracket 34 and cover the thermal insulation cotton 35; the bridge deck repairing concrete is maintained by adopting a movable easy-to-retract curing shed 33 in a low-temperature environment.
Step seven, grouting repairing construction of beam bottom cracks: the multipoint synchronous filling and sealing device consists of a movable grouting head 27, a sliding shaft 28, a grouting support 29, a grouting main pipe 30, a grouting hose 31, a vertical rod 32 and a fixed ring 39, wherein the sliding shaft 28 and the fixed ring 39 are arranged on the grouting support 29, the movable grouting head 27 is arranged on the sliding shaft 28, and the position of the movable grouting head 27 on the sliding shaft 28 is adjusted according to the trend of a crack at the bottom of a beam; the movable grouting head 27 is connected with the grouting main pipe 30 through a grouting hose 31, wherein the grouting main pipe 30 is connected to the grouting support 29 through a fixing ring 39, a vertical rod 32 is arranged at the lower part of the grouting support 29, and a worker moves the grouting support 29 through the vertical rod 32 to repair a crack at the bottom of the beam.
The active hollow slab bridge comprehensive reinforcement structure constructed according to the construction method comprises a self-hanging fixed roughening modified epoxy concrete or polymer mortar repairing construction platform, a positioning bracket 18 and a multi-point synchronous filling and sealing device, as shown in reference to figures 1-8; the gravity type U-shaped bridge abutment comprises a gravity type U-shaped bridge abutment 1, a abutment body 2, an active hollow slab bridge 3, a taper slope 4, an expansion joint 5, a hinge joint 6, a capping beam 7, a safety barrier 8, a lower beam 9, square steel 10, a capping beam repair area 11, pier columns 12, a suspender 13, a vertical beam 14, an upper beam 15, an adjustable screw 16, a steel plate 17, a positioning bracket 18, a portal-shaped steel bar 19, a hinge joint steel bar net piece 20, concrete 21, a plugging sheet 22, a handle 23, a middle support rod 24, a U-shaped fixing frame 25, a U-shaped buckle 26, a movable grouting head 27, a sliding shaft 28, a grouting support 29, a grouting main pipe 30, a grouting hose 31, a vertical rod 32, a low-temperature environment movable concrete heat preservation shed 33, a movable concrete heat preservation shed support 34, heat preservation cottons 35, a middle beam 36, a support connecting rod 37, pulleys 38 and a fixing ring 39; the repair of the honeycomb pitting surface of the capping beam 7 adopts a self-hanging fixed roughening modified epoxy concrete or polymer mortar repair construction platform, the hinge joint 6 is treated by adopting a positioning device of integrally formed and connected door-shaped steel bars 19 and hinge joint steel bar meshes 20, the bridge deck concrete is insulated by adopting a low-temperature environment mobile type easy-to-retract curing shed 33, and the grouting repair of the crack at the bottom of the beam adopts a multi-point synchronous filling and sealing device.
The capping beam repairing area 11 is a self-hanging fixed roughening modified epoxy concrete or polymer mortar repairing construction platform, and the structure of the capping beam repairing area 11 mainly comprises a safety barrier 8, a lower beam 9, square steel 10, a capping beam repairing area 11, pier columns 12, suspenders 13, vertical beams 14, an upper beam 15, adjustable screw rods 16, a steel plate 17, a middle beam 36 and the like, wherein the upper beam 15, the middle beam 36 and the lower beam 9 are connected close to the capping beam side through the vertical beams 14, the upper beam 15 and the middle beam 36 are fixed on the capping beam, and the middle beam 36 is provided with adjustable screw rods 16 which are supported on the pier columns 12; square steel 10 is arranged at the upper part of the lower cross beam 9, and a steel plate 17 and a safety barrier 8 are arranged at the upper part of the square steel 10; the outer sides of the upper cross beam 15 and the lower cross beam 9 are connected through a hanging rod 13; the worker performs the construction of the capping beam repair area 11 on the construction platform.
The positioning bracket 18 consists of a handle 23, a middle support rod 24, a U-shaped fixing frame 25, a U-shaped buckle 26 and a bracket connecting rod 37, wherein the handle 23 is welded on the upper part of the bracket connecting rod 37, the U-shaped fixing frame 25 and the U-shaped buckle 26 are welded on the lower part of the bracket connecting rod 37, the support rods 24 are uniformly arranged on the U-shaped fixing frame 25, and the support rods 24 are supported on concrete on two sides of the hinge joint 6; the door-shaped steel bars 19 are uniformly arranged above the hinge joints 6, the hinge joint steel bar meshes 20 are arranged inside the hinge joints 6, U-shaped buckles 26 of the positioning support 18 are clamped on the door-shaped steel bars 19, U-shaped fixing frames 25 of the positioning support 18 fix the hinge joint steel bar meshes 20, and workers move the positioning support 18 through handles 23.
The movable easy-to-retract curing shed 33 in the low-temperature environment is composed of a movable concrete thermal insulation shed bracket 34, thermal insulation cotton 35 and pulleys 38, wherein the movable concrete thermal insulation shed bracket 34 is processed in a factory and assembled on site, the pulleys 38 are arranged at the lower part of the movable concrete thermal insulation shed bracket 34, and the thermal insulation cotton 35 covers the surface of the movable concrete thermal insulation shed bracket 34; the bridge deck repairing concrete is maintained by adopting a movable easy-to-retract curing shed 33 in a low-temperature environment.
The multi-point synchronous filling and sealing device is used for repairing the crack of the beam bottom, the structure of the multi-point synchronous filling and sealing device mainly comprises a movable grouting head 27, a sliding shaft 28, a grouting support 29, a grouting main pipe 30, a grouting hose 31, a vertical rod 32 and a fixed ring 39, the sliding shaft 28 and the fixed ring 39 are arranged on the grouting support 29, the movable grouting head 27 is arranged on the sliding shaft 28, and the position of the movable grouting head 27 on the sliding shaft 28 is adjusted according to the trend of the crack of the beam bottom; the movable grouting head 27 is connected with the grouting main pipe 30 through a grouting hose 31, wherein the grouting main pipe 30 is connected to the grouting support 29 through a fixing ring 39, a vertical rod 32 is arranged at the lower part of the grouting support 29, and a worker moves the grouting support 29 through the vertical rod 32 to repair a crack at the bottom of the beam.
The invention can effectively reduce engineering cost, can realize centralized prefabrication, on-site assembly, quick positioning of hinge joint reinforcing steel meshes, low-temperature maintenance of bridge deck concrete and the like, accelerates construction speed, and can obtain better technical and economic benefits when applied to actual engineering.
Claims (6)
1. The construction method of the active hollow slab bridge comprehensive reinforcement structure is characterized by comprising the following steps of:
step one, construction preparation: the relevant components of the active hollow slab bridge comprehensive reinforcement structure are processed and manufactured in a centralized way in a factory;
step two, repairing and constructing a capping beam: the bent cap repair area (11) is a self-hanging fixed roughening modified epoxy concrete or polymer mortar repair construction platform, an upper cross beam (15), a middle cross beam (36) and a lower cross beam (9) are connected close to the bent cap side through a vertical beam (14), wherein the upper cross beam (15) and the middle cross beam (36) are fixed on the bent cap, and an adjustable screw (16) is arranged on the middle cross beam (36) and supported on a pier column (12); the worker carries out the construction of the bent cap repair area (11) on the construction platform;
Step three, bridge floor concrete chisel removes: ejecting an accurate reserved position by adopting an ink line, and cutting by using a concrete cutting machine; crushing and chiseling the cutting positions on the two sides of the expansion joint position by using a rock drill;
Fourth, hinge joint repairing construction: the door-shaped steel bars (19) are uniformly arranged above the hinge joint (6), the hinge joint steel bar net sheet (20) is placed inside the hinge joint (6), the U-shaped buckle (26) of the positioning support (18) is clamped on the door-shaped steel bars (19), the U-shaped fixing frame (25) of the positioning support (18) is used for fixing the hinge joint steel bar net sheet (20), a worker moves the positioning support (18) through the handle (23), and concrete is poured after the fixing of the hinge joint steel bar net sheet (20) is completed;
Step five, bridge deck repairing construction: leveling the top surface of the expansion joint and the asphalt concrete pavement, wherein the slurry is 1-2mm lower than the pavement after slurry collection, and trowelling by a ruler before concrete solidification;
Step six, bridge floor concrete low-temperature maintenance construction: the bridge deck repairing concrete heat preservation adopts a movable easily retractable curing shed (33) in a low-temperature environment for curing;
step seven, grouting repairing construction of beam bottom cracks: a slip shaft (28) is arranged on a slip bracket (29) of the multipoint synchronous filling and sealing device, a movable slip head (27) is arranged on the slip shaft (28), and the position of the movable slip head (27) on the slip shaft (28) is adjusted according to the trend of a beam bottom crack; the lower part of the grouting support (29) is provided with a vertical rod (32), and a worker moves the grouting support (29) through the vertical rod (32) to carry out grouting repair on the crack at the bottom of the beam.
2. The construction method of the active hollow slab bridge comprehensive reinforcement structure according to claim 1, wherein in the second step, square steel (10) is arranged at the upper part of the lower cross beam (9), and steel plates (17) and safety guardrails (8) are arranged at the upper part of the square steel (10); the outer sides of the upper cross beam (15) and the lower cross beam (9) are connected through a suspender (13).
3. The construction method of the active hollow slab bridge comprehensive reinforcement structure according to claim 1, wherein in the fourth step, the positioning bracket (18) mainly comprises a handle (23), a middle position stay bar (24), a U-shaped fixing frame (25), a U-shaped buckle (26) and a bracket connecting rod (37), the handle (23) is welded on the upper portion of the bracket connecting rod (37), the U-shaped fixing frame (25) and the U-shaped buckle (26) are welded on the lower portion of the bracket connecting rod (37), the middle position stay bar (24) is uniformly arranged on the U-shaped fixing frame (25), and the middle position stay bar (24) is supported on concrete on two sides of the hinge joint (6).
4. The construction method of the active hollow slab bridge comprehensive reinforcement structure according to claim 1, wherein in the sixth step, the movable easy-to-retract curing shed (33) in the low-temperature environment mainly comprises a movable concrete heat preservation shed support (34), heat preservation cotton (35) and pulleys (38), the movable concrete heat preservation shed support (34) is processed in a factory and assembled on site, the pulleys (38) are arranged at the lower part of the movable concrete heat preservation shed support (34), and the surface of the movable concrete heat preservation shed support (34) is covered with the heat preservation cotton (35).
5. The construction method of the active hollow slab bridge comprehensive reinforcement structure according to claim 1, wherein in the seventh step, a fixing ring (39) is arranged on a grouting support (29) of the multipoint synchronous filling and sealing device; the movable grouting head (27) is connected with the grouting main pipe (30) through a grouting hose (31), wherein the grouting main pipe (30) is connected with the grouting support (29) through a fixing ring (39).
6. An active hollow slab bridge synthesizes reinforced structure which characterized in that: the construction method according to any one of claims 1 to 5.
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