CN114197334A - High-performance concrete slab bottom reinforcing structure for active hollow slab bridge and construction method - Google Patents
High-performance concrete slab bottom reinforcing structure for active hollow slab bridge and construction method Download PDFInfo
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- CN114197334A CN114197334A CN202111589294.2A CN202111589294A CN114197334A CN 114197334 A CN114197334 A CN 114197334A CN 202111589294 A CN202111589294 A CN 202111589294A CN 114197334 A CN114197334 A CN 114197334A
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- 238000010276 construction Methods 0.000 title claims abstract description 44
- 239000004574 high-performance concrete Substances 0.000 title claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 78
- 239000010959 steel Substances 0.000 claims abstract description 78
- 239000004567 concrete Substances 0.000 claims abstract description 21
- 238000005498 polishing Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 4
- 239000005341 toughened glass Substances 0.000 claims description 20
- 238000009415 formwork Methods 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000003020 moisturizing effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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Abstract
The invention relates to a high-performance concrete slab bottom reinforcing structure of an active hollow slab bridge and a construction method, which comprises the following steps: step one, processing a component; step two, bar planting construction; step three, installing an operation platform; step four, polishing the beam bottom interface; fifthly, constructing a reinforcing mesh of the bottom plate of the existing hollow slab bridge; constructing a reinforced bottom plate supporting template system; seventhly, concrete grouting construction; step eight, concrete curing; and step nine, removing the mold. The invention has the beneficial effects that: according to the invention, a reinforced bottom plate supporting template system is adopted, a portal support is arranged on a steel plate of an operation platform, a bottom template is arranged on the upper portion of the portal support, a grouting valve and a stress gauge are arranged on the bottom template, side mold embedded bars and side templates are arranged on an existing hollow slab bridge, grouting observation holes are formed in the side templates, grouting is carried out through the grouting valve, and the grouting is dynamically controlled through the grouting observation holes and stress variation of the stress gauge, so that 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 slab bottom reinforcing structure, in particular to an active hollow slab bridge high-performance concrete slab bottom reinforcing structure and a construction method.
Background
Along with the development of economy, the operation duration of bridges is prolonged, a large number of old bridges are damaged gradually, and some newly-built bridges can not be used normally due to the problems of construction and the like, deep research is carried out on bridge bottom plate reinforcement for ensuring the normal use of the bridges and the operation safety of the bridges, but the problems of low construction speed, high cost, difficulty in ensuring the reinforcement quality and the like of a bottom plate formwork system, a construction platform and the like occur in the reinforcement process.
In summary, it is very important to find a high-performance concrete slab bottom reinforcing structure and a construction method for an existing hollow slab bridge slab bottom reinforcing system with high construction speed, high formwork system precision and repeated use.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an active hollow slab bridge high-performance concrete slab bottom reinforcing structure and a construction method.
The construction method of the high-performance concrete slab-bottom reinforced structure of the active hollow slab bridge comprises the following steps:
step one, component processing: the high-performance concrete slab bottom reinforcing structural members of the existing hollow slab bridge are processed and manufactured in a centralized manner in a factory and are transported to a construction site after being processed;
step two, bar planting construction: planting ribs on the pier stud and the existing hollow slab bridge;
step three, installing an operation platform: the first steel hoop and the second steel hoop are fixed with a pier stud through embedded steel bars respectively, two ends of the connecting beam are fixed with the first steel hoop and the second steel hoop through high-strength bolts respectively, square steel is uniformly distributed on the upper portion of the connecting beam, and a steel plate is laid on the upper portion of the square steel; a hanging rod is arranged on the upper hole of the concrete guardrail and is fixed with a bottom pocket rod at the lower part of the connecting beam through a bolt;
step four, polishing the beam bottom interface: steps are arranged on two sides of a support system of the interface polishing dustproof movable support platform, transparent toughened glass is arranged at the top of the support system, and a slag collecting bag is arranged at the lower part of the toughened glass; a worker stands on the step, carries out interface polishing by operating a polishing tool held at the opening, and collects crushed slag through a slag collecting bag;
step five, constructing the reinforcing mesh of the bottom plate of the active-service hollow slab bridge: the concrete guardrail is provided with a hole, and the hanging rib is connected with the auxiliary mounting bracket through a bolt; uniformly arranging expansion bolts on a bottom plate of the active hollow slab bridge, adjusting the elevation of the auxiliary mounting bracket, fixing the expansion bolts and the bottom plate reinforcing steel bar mesh after the bottom plate reinforcing steel bar mesh reaches a designed position, and dismantling the auxiliary mounting bracket;
step six, construction of a reinforced bottom plate supporting template system: the portal supports are uniformly arranged on the operating platform steel plate, the upper parts of the portal supports are provided with bottom templates, and grouting valves and stress gauges are arranged on the bottom templates at intervals; the active hollow slab bridge is provided with side form embedded bars and side form plates;
seventhly, concrete grouting construction: grouting through a grouting valve after the supporting of the reinforced bottom plate supporting template system is finished, and dynamically controlling grouting through a grouting observation hole and stress variation of a stress gauge;
step eight, concrete curing: the concrete curing adopts a surface coating watering moisturizing curing mode;
step nine, mold stripping: the reinforced bottom plate supporting template system is disassembled in a mode of firstly disassembling the supporting base plate and then disassembling the supporting base plate.
Preferably, the method comprises the following steps: and in the third step, the first steel hoop and the second steel hoop are provided with ear plates and are closed through high-strength bolts.
Preferably, the method comprises the following steps: in the fourth step, the bracket system is formed by welding steel pipes; the lower part of the bracket system is provided with a pulley; arranging an operation hole on the toughened glass on the step side and externally coating a movable canvas; the upper part of the toughened glass is provided with telescopic springs, and canvas is arranged between the telescopic springs.
Preferably, the method comprises the following steps: and fifthly, welding the auxiliary mounting bracket by square steel, and positioning the bottom plate reinforcing steel bar mesh between the auxiliary mounting bracket and the bottom plate of the active hollow slab bridge.
Preferably, the method comprises the following steps: and step six, arranging grouting observation holes on the side templates.
The high-performance concrete slab-bottom reinforced structure of the active hollow slab bridge is obtained by construction according to the construction method.
The invention has the beneficial effects that:
1. the formwork supporting members of the high-performance concrete slab bottom strengthening system of the active hollow slab bridge are prefabricated and processed in factories, are high in construction speed and are assembled outside the field, the turnover rate of the formwork members is increased, and the construction cost is reduced.
2. According to the invention, a reinforced bottom plate supporting template system is adopted, a portal support is arranged on a steel plate of an operation platform, a bottom template is arranged on the upper portion of the portal support, a grouting valve and a stress gauge are arranged on the bottom template, side mold embedded bars and side templates are arranged on an existing hollow slab bridge, grouting observation holes are formed in the side templates, grouting is carried out through the grouting valve, and the grouting is dynamically controlled through the grouting observation holes and stress variation of the stress gauge, so that the operation is simple, the construction speed is accelerated, and the labor is saved.
3. The high-performance concrete slab bottom reinforcing structure for the active hollow slab bridge adopts the mutual cooperation of the structures such as the operating platform, the interface polishing dustproof moving support platform, the auxiliary mounting support, the reinforcing bottom plate supporting template system and the like, so that the formwork structure is reasonable, economic and effective, and the construction quality of the bottom plate reinforcement is effectively ensured.
Drawings
FIG. 1 is a schematic view of a high-performance concrete slab bottom reinforcement elevation of an existing hollow slab bridge;
FIG. 2 is a schematic longitudinal elevation view of the mounting of the operation platform;
FIG. 3 is a schematic illustration of an operator platform mounting cross-section;
FIG. 4 is a schematic view of a formwork system elevation of a rapid stationing portal support system;
FIG. 5 is a schematic view of a secondary mounting bracket;
FIG. 6 is a schematic view of a large sample of the interface polishing dustproof mobile support platform;
FIG. 7 is a flow chart of the construction process of the present invention.
Description of reference numerals: 1-conical slope; 2-pier stud; 3-an active-service hollow slab bridge; 4-support; 5-support base stone; 6-a capping beam; 7-expansion joint; 8-concrete guard rail; 9-a boom; 10-expansion bolts; 11-hanging ribs; 12-a base plate reinforcing mesh reinforcement; 13-auxiliary mounting brackets; 14-connecting the beam; 15-square steel; 16-steel plate; 17-a first steel hoop; 18-a second steel hoop; 19-planting the steel bars; 20-ear plate; 21-high strength bolts; 22-pocket bottom rod; 23-a portal support; 24-a bottom template; 25-sideform; 26-a strain gauge; 27-grouting observation holes; 28-grouting valves; 29-planting ribs on the side mold; 30-canvas; 31-a telescopic spring; 32-a moving canvas; 33-toughened glass; 34-a slag collecting bag; 35-polishing the interface to obtain a dustproof movable support platform; 36-a steel tube; 37-step; 38-pulley.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
As an embodiment, the construction method of the high-performance concrete slab-bottom reinforced structure of the active hollow slab bridge mainly comprises the following construction steps:
step one, component processing: the high-performance concrete slab-bottom reinforced structural members of the existing hollow slab bridge are processed and manufactured in a centralized manner in a factory and then transported to a construction site after being processed.
Step two, bar planting construction: and (4) planting the steel bars on the pier columns and the existing hollow slab bridges.
Step three, installing an operation platform: the operation platform comprises a connecting beam 14, square steel 15, a steel plate 16, a first steel hoop 17, a second steel hoop 18, a steel bar planting 19, a suspender 9, a bottom binding rod 22 and the like, wherein the first steel hoop 17 and the second steel hoop 18 are fixed with a pier stud through the steel bar planting 19, the first steel hoop 17 and the second steel hoop 18 are provided with lug plates 20 and are closed through high-strength bolts 21, the connecting beam 14 and the first steel hoop 17 and the second steel hoop 18 are fixed through the high-strength bolts 21, the square steel 15 is uniformly arranged on the upper portion of the connecting beam 14, and the steel plate 16 is laid on the upper portion of the square steel 15; a hanging rod 9 is arranged on the upper opening of the concrete guardrail 8, the hanging rod 9 is fixed with a bottom pocket rod 22 through a bolt, wherein the bottom pocket rod 22 is arranged at the lower part of the connecting beam 14.
Step four, polishing the beam bottom interface: the interface polishing dustproof movable support platform 35 comprises a canvas 30, a telescopic spring 31, a movable canvas 32, toughened glass 33, a slag collecting bag 34, a steel pipe 36, steps 37, pulleys 38 and the like, a support system of the interface polishing dustproof movable support platform 35 is formed by welding the steel pipe 36, the pulleys 38 are arranged at the lower part, the steps 37 are arranged at the two sides, the transparent toughened glass 33 is arranged at the top, and the toughened glass 33 at the step side is provided with an operation hole and is externally coated with the movable canvas 32; the upper part of the toughened glass 33 is provided with telescopic springs 31, canvas 30 is arranged between the telescopic springs 31, and a slag collecting bag 34 is arranged at the lower part of the toughened glass 33; the worker stands on the step 37, the interface is polished by operating the opening to hold a polishing tool, and the slag is collected by the slag collecting bag 34.
Step five, constructing the reinforcing mesh of the bottom plate of the active-service hollow slab bridge: the auxiliary mounting bracket 13 is formed by welding square steel, a hanging rib 11 is arranged at an opening of the concrete guardrail 8, and the hanging rib 11 is connected with the auxiliary mounting bracket 13 through a bolt; the expansion bolts 10 are uniformly distributed on the bottom plate of the active hollow slab bridge 3, the elevation of the auxiliary mounting bracket 13 is adjusted, after the bottom plate reinforcing steel bar mesh 12 reaches the designed position, the expansion bolts 10 are fixed with the bottom plate reinforcing steel bar mesh 12, and the auxiliary mounting bracket 13 is removed.
Step six, quickly arranging a portal support system formwork support system construction: the reinforced bottom plate supporting template system comprises a portal support 23, a bottom template 24, side templates 25, a stress meter 26, a grouting observation hole 27, a grouting valve 28, side mold embedded bars 29 and the like, wherein the portal support 23 is uniformly arranged on a steel plate 16 of the operating platform, the bottom template 24 is arranged at the upper part of the portal support 23, and the grouting valve 28 and the stress meter 26 are arranged at the design position of the bottom template 24 at intervals; the active hollow slab bridge 3 is provided with side form embedded bars 29 and side form plates 25, and the side form plates 25 are provided with grouting observation holes 27.
And seventhly, performing concrete grouting construction, namely grouting through a grouting valve 28 after the supporting of the reinforced bottom plate supporting template system is finished, and dynamically controlling grouting through stress changes of the grouting observation hole 27 and the stress gauge 26.
And step eight, concrete curing, wherein the concrete curing adopts a surface coating watering moisturizing curing mode.
And step nine, removing the formwork, namely removing the reinforced bottom plate supporting formwork system in a mode of firstly removing the supporting formwork system and then removing the supporting formwork system.
The high-performance concrete slab-bottom reinforcing structure of the existing hollow slab bridge constructed according to the construction method comprises an operation platform, an interface polishing dustproof movable support platform 35, an auxiliary mounting support 13 and a reinforcing bottom plate supporting template system, and specifically comprises a taper slope 1, a pier stud 2, an existing hollow slab bridge 3, a support 4, a support cushion stone 5, a cover beam 6, an expansion joint 7, a concrete guardrail 8, a hanger rod 9, an expansion bolt 10, a hanging bar 11, a bottom plate reinforcing steel bar net 12, an auxiliary mounting support 13, a connecting beam 14, a square steel 15, a steel plate 16, a first steel hoop 17, a second steel hoop 18, a steel bar planting 19, an ear plate 20, a high-strength bolt 21, a bottom pocket rod 22, a portal support 23, a bottom template 24, a side template 25, a stress meter 26, a grouting observation hole 27, a grouting valve 28, a side mold planting bar 29, canvas 30, a telescopic spring 31, a grouting spring 31, a reinforcing steel bar, a reinforcing steel, The device comprises a movable canvas 32, toughened glass 33, a slag collecting bag 34, an interface polishing dustproof movable support platform 35, a steel pipe 36, a step 37 and a pulley 38; operation platform adopts pier stud anchor and bridge limit both sides trompil suspension type, and the face of the breast is polished and is adopted the interface to polish dustproof moving support platform 35, and the hollow slab bridge bottom plate of active service sets up expansion bolts 10, and the installation of bottom plate reinforcement wire net 12 adopts the shape top of preapring for an unfavorable turn of events to hang the supplementary installing support 13 that promotes the bottom sprag, and the reinforcing bottom plate supports the template system and adopts quick cloth door shape support system formwork system, sets up slip casting inspection hole 27, carries out grout volume dynamic monitoring.
The operation platform comprises a connecting beam 14, square steel 15, a steel plate 16, a first steel hoop 17, a second steel hoop 18, a steel bar planting 19, a suspender 9, a bottom-binding rod 22 and the like, wherein the first steel hoop 17 and the second steel hoop 18 are fixed with a pier stud through the steel bar planting 19, the first steel hoop 17 and the second steel hoop 18 are provided with lug plates 20 and are closed through high-strength bolts 21, the connecting beam 14, the first steel hoop 17 and the second steel hoop 18 are fixed through the high-strength bolts 21, the square steel 15 is uniformly arranged at the upper part of the connecting beam 14, and the steel plate 16 is laid at the upper part of the square steel 15; a hanging rod 9 is arranged on a hole formed in the concrete guardrail 8, the hanging rod 9 and a bottom pocket rod 22 are fixed through bolts, and the bottom pocket rod 22 is arranged at the lower part of the connecting beam 14;
the interface polishing dustproof movable support platform 35 comprises a canvas 30, a telescopic spring 31, a movable canvas 32, toughened glass 33, a slag collecting bag 34, a support system, steps 37, pulleys 38 and the like, wherein the support system of the interface polishing dustproof movable support platform 35 is formed by welding steel pipes 36, the pulleys 38 are arranged at the lower part, the steps 37 are arranged at the two sides, the transparent toughened glass 33 is arranged at the top, and the toughened glass 33 at the step side is provided with an operation hole and is externally coated with the movable canvas 32; the telescopic springs 31 are arranged on the upper portion of the toughened glass 33, the canvas 30 is arranged between the telescopic springs 31, and the slag collecting bag 34 is arranged on the lower portion of the toughened glass 33.
The auxiliary mounting bracket 13 is formed by welding square steel, a hanging rib 11 is arranged at an opening of the concrete guardrail 8, and the hanging rib 11 is connected with the auxiliary mounting bracket 13 through a bolt; the expansion bolts 10 are uniformly distributed on the bottom plate of the active hollow slab bridge 3, the elevation of the auxiliary mounting bracket 13 is adjusted, after the bottom plate reinforcing steel bar mesh 12 reaches the designed position, the expansion bolts 10 are fixed with the bottom plate reinforcing steel bar mesh 12, and the auxiliary mounting bracket 13 is removed.
The reinforced bottom plate supporting template system comprises a portal bracket 23, a bottom template 24, side templates 25, a stress meter 26, a grouting observation hole 27, a grouting valve 28, side template embedded bars 29 and the like, wherein the portal bracket 23 is uniformly arranged on a steel plate 16 of an operation platform, the bottom template 24 is arranged at the upper part of the portal bracket 23, and the grouting valve 28 and the stress meter 26 are arranged at the design position of the bottom template 24 at intervals; the active hollow slab bridge 3 is provided with side form embedded bars 29 and side form plates 25, and the side form plates 25 are provided with grouting observation holes 27; and after the supporting of the reinforced bottom plate supporting template system is finished, grouting is carried out through a grouting valve 28, and the grouting is dynamically controlled through stress changes of the grouting observation hole 27 and the stress gauge 26.
The invention can effectively reduce the engineering cost, can realize the construction by centralized prefabrication and field assembly, accelerates the construction speed, and can obtain better technical and economic benefits when being applied to the actual engineering.
Claims (6)
1. A construction method of an active service hollow slab bridge high-performance concrete slab bottom reinforcing structure is characterized by comprising the following steps:
step one, component processing: the high-performance concrete slab bottom reinforcing structural members of the existing hollow slab bridge are processed and manufactured in a centralized manner in a factory and are transported to a construction site after being processed;
step two, bar planting construction: planting ribs on the pier stud and the existing hollow slab bridge;
step three, installing an operation platform: a first steel hoop (17) and a second steel hoop (18) are respectively fixed with a pier stud (2) through embedded steel bars (19), two ends of a connecting beam (14) are respectively fixed with the first steel hoop (17) and the second steel hoop (18) through high-strength bolts (21), square steel (15) is uniformly arranged on the upper portion of the connecting beam (14), and a steel plate (16) is laid on the upper portion of the square steel (15); a hole is formed in the concrete guardrail (8) and is provided with a suspender (9), and the suspender (9) is fixed with a bottom pocket rod (22) at the lower part of the connecting beam (14) through a bolt;
step four, polishing the beam bottom interface: steps (37) are arranged on two sides of a support system of the interface polishing dustproof movable support platform (35), transparent toughened glass (33) is arranged on the top of the support system, and a slag collecting bag (34) is arranged on the lower portion of the toughened glass (33); a worker stands on the step (37), the interface is polished by operating a hole to hold a polishing tool, and crushed slag is collected through a slag collecting bag (34);
step five, constructing the reinforcing mesh of the bottom plate of the active-service hollow slab bridge: a hanging rib (11) is arranged at the opening of the concrete guardrail (8), and the hanging rib (11) is connected with the auxiliary mounting bracket (13) through a bolt; uniformly arranging expansion bolts (10) on a bottom plate of the active hollow slab bridge (3), adjusting the elevation of an auxiliary mounting bracket (13), fixing the expansion bolts (10) and the bottom plate reinforcing steel bar mesh (12) after the bottom plate reinforcing steel bar mesh (12) reaches a designed position, and dismantling the auxiliary mounting bracket (13);
step six, construction of a reinforced bottom plate supporting template system: the portal supports (23) are uniformly arranged on the operating platform steel plate (16), the upper parts of the portal supports (23) are provided with bottom formworks (24), and grouting valves (28) and stress gauges (26) are arranged on the bottom formworks (24) at intervals; the active hollow slab bridge (3) is provided with side form embedded bars (29) and side form plates (25);
seventhly, concrete grouting construction: grouting is carried out through a grouting valve (28) after the supporting of the reinforced bottom plate supporting template system is finished, and dynamic control is carried out on grouting through the stress change of a grouting observation hole (27) and a stress gauge (26);
step eight, concrete curing: the concrete curing adopts a surface coating watering moisturizing curing mode;
step nine, mold stripping: the reinforced bottom plate supporting template system is disassembled in a mode of firstly disassembling the supporting base plate and then disassembling the supporting base plate.
2. The construction method of the active hollow slab bridge high-performance concrete slab-bottom reinforced structure according to claim 1, characterized in that: and in the third step, the first steel hoop (17) and the second steel hoop (18) are provided with ear plates (20) and are closed through high-strength bolts (21).
3. The construction method of the active hollow slab bridge high-performance concrete slab-bottom reinforced structure according to claim 1, characterized in that: in the fourth step, the bracket system is formed by welding steel pipes (36); the lower part of the bracket system is provided with a pulley (38); an operation hole is arranged on the toughened glass (33) on the side of the step (37) and is externally coated with a movable canvas (32); the upper part of the toughened glass (33) is provided with telescopic springs (31), and canvas (30) is arranged between the telescopic springs (31).
4. The construction method of the active hollow slab bridge high-performance concrete slab-bottom reinforced structure according to claim 1, characterized in that: and fifthly, welding the auxiliary mounting bracket (13) by square steel, and positioning the bottom plate reinforcing mesh (12) between the auxiliary mounting bracket (13) and the bottom plate of the active hollow slab bridge (3).
5. The construction method of the active hollow slab bridge high-performance concrete slab-bottom reinforced structure according to claim 1, characterized in that: and step six, arranging a grouting observation hole (27) on the side template (25).
6. The utility model provides a reinforced structure at bottom of active service hollow slab bridge high performance concrete slab which characterized in that: the construction method according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111589294.2A CN114197334B (en) | 2021-12-23 | 2021-12-23 | Active hollow slab bridge high-performance concrete slab bottom reinforcing structure and construction method |
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| CN202111589294.2A CN114197334B (en) | 2021-12-23 | 2021-12-23 | Active hollow slab bridge high-performance concrete slab bottom reinforcing structure and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115162217A (en) * | 2022-07-28 | 2022-10-11 | 重庆大学 | Rapid integral reinforcing method for plate type concrete bridge |
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