CN114370009A - Active-service open-web type arch bridge comprehensive reinforcing structure and construction method - Google Patents
Active-service open-web type arch bridge comprehensive reinforcing structure and construction method Download PDFInfo
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- CN114370009A CN114370009A CN202111650553.8A CN202111650553A CN114370009A CN 114370009 A CN114370009 A CN 114370009A CN 202111650553 A CN202111650553 A CN 202111650553A CN 114370009 A CN114370009 A CN 114370009A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 166
- 239000010959 steel Substances 0.000 claims abstract description 166
- 230000003187 abdominal effect Effects 0.000 claims abstract description 26
- 230000002787 reinforcement Effects 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 15
- 238000005336 cracking Methods 0.000 claims abstract description 8
- 239000004567 concrete Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 15
- 238000007569 slipcasting Methods 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 12
- 238000004513 sizing Methods 0.000 claims description 11
- 239000011150 reinforced concrete Substances 0.000 claims description 9
- 210000003205 muscle Anatomy 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000011381 foam concrete Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000012763 reinforcing filler Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 239000011800 void material Substances 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 2
- 239000011378 shotcrete Substances 0.000 description 3
- 210000001015 abdomen Anatomy 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000000284 resting effect 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
- E01D4/00—Arch-type bridges
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Abstract
The invention relates to an active-service hollow arch bridge comprehensive reinforcing structure, which comprises an arch ring pointing and cracking structure treated by pressure grouting and a shaping operation platform; the pressure grouting treatment arch ring pointing and cracking structure comprises an arc-shaped pressing plate panel, a first steel plate with bolt holes, a transverse steel pipe and a vertical steel pipe, wherein the arc-shaped pressing plate panel is fixed at the arch ring of the abdominal arch through a second anchor bolt; the regularization operation platform includes third template, second area bolt hole steel sheet, horizontal quarter butt, horizontal pole, montant, connection pad, horizontal vertical pole and knot connect, the second area bolt hole steel sheet is fixed in the abdominal arch diaphragm wall through the fourth crab-bolt, be provided with the knot on the connection pad and connect. The invention has the beneficial effects that: the structure can solve the problem of comprehensive reinforcement construction of an active-service open-web arch bridge with limited construction conditions, is suitable for various working conditions during construction, and has a wider application range.
Description
Technical Field
The invention relates to an active-service open-web type arch bridge comprehensive reinforcing structure and a construction method, and belongs to the field of bridge construction.
Background
Because the design standard of a part of bridges constructed in the early stage is low, the traffic volume is rapidly increased along with the development of economy, particularly, the bridges constructed in the 70 th to 80 th ages in the 20 th century have different degrees of natural aging of materials and structures, and in addition, the influence of overweight and limited weight of vehicles causes the potential safety hazard of a plurality of bridges, and the reinforcement is urgently needed. The collapse of the arch bridge has the mutation property and brings more danger. However, the removal of the old bridge to build a new bridge not only requires a large investment, but also requires traffic interruption, and does not meet the requirements of scientific development. Therefore, it is important to adopt methods such as reinforcement to recover and improve the load capacity and prolong the service life.
Due to the limitation of construction conditions and bridge working conditions, when the hollow arch bridge is reinforced and maintained, the reinforcing effect is poor due to the limitation of construction space or height. In view of the above, the invention provides a simple and effective comprehensive reinforcing structure and construction method for an active-service open-web arch bridge, which can improve the reinforcing construction quality and efficiency of the active-service open-web arch bridge.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an active-service hollow arch bridge comprehensive reinforcing structure and a construction method.
The comprehensive reinforcing structure of the existing-service hollow arch bridge comprises a pressure grouting treatment arch ring pointing and cracking structure and a sizing operation platform;
the pressure grouting treatment arch ring pointing and cracking structure comprises an arc-shaped pressing plate panel, a first steel plate with bolt holes, a transverse steel pipe and a vertical steel pipe, wherein the arc-shaped pressing plate panel is fixed at the position of an abdominal arch ring through a second anchor bolt;
regularization operation platform, including third template, second area bolt hole steel sheet, horizontal quarter butt, horizontal pole, montant, connection pad, horizontal vertical pole and joint, the second area bolt hole steel sheet is fixed in the abdominal arch transverse wall through the fourth crab-bolt, be provided with the joint on the connection pad, the joint passes through horizontal pole, horizontal vertical pole and the horizontal quarter butt of bolt fixation, fixed connection montant in the connection pad, the horizontal quarter butt other end welds on second area bolt hole steel sheet, the third template sets up in regularization operation platform the superiors.
Preferably, the method comprises the following steps: still include the abdominal arch hunch back of the body filler slip casting reinforced structure, abdominal arch hunch back of the body filler slip casting reinforced structure includes sleeve pipe, customization template and slip casting hole, and the hunch side wall is provided with the customization template, and the customization template is fixed at the hunch side wall through first crab-bolt, and the bridge floor is provided with the slip casting hole, and the downthehole sleeve pipe that is provided with of slip casting.
Preferably, the method comprises the following steps: in the arch ring pointing and crack structure is dealt with in pressure grouting, arc pressure panel lower part is equipped with arc clamp plate bottom plate, is provided with wedge rubber cushion between vertical steel pipe and the arc clamp plate bottom plate, is provided with the cushion between vertical steel pipe and the horizontal steel pipe.
Preferably, the method comprises the following steps: still including encircleing the diaphragm wall reinforced structure, it includes plant muscle, first reinforcing bar net, first template and steel pipe stull to encircle the diaphragm wall reinforced structure, the plant muscle sets up in the side wall, and first reinforcing bar net forms steel skeleton with the plant muscle ligature is fixed, and steel skeleton is provided with first template outward, is provided with the third crab-bolt in the first template, and the twice is provided with the steel pipe stull between the template of the diaphragm wall on encircleing, is provided with rubber cushion between steel pipe stull and the template.
Preferably, the method comprises the following steps: still include main arch ring increase cross-section reinforced structure, main arch ring increase cross-section reinforced structure includes U shaped steel band, second reinforcing bar net and second template, main arch ring is planted the muscle and is become steel reinforcement framework with the ligature of second reinforcing bar net, and steel reinforcement framework is provided with the second template outward, is provided with the bolt hole on the U shaped steel band, and main arch ring crab-bolt passes through the bolt hole and is fixed in main arch ring with U shaped steel band, and the second template is hung in main arch ring through U shaped steel band.
Preferably, the method comprises the following steps: the reinforced concrete guardrail repairing structure comprises a sizing steel die, a bolt buckle, a second bolt and a first nut, the bolt buckle is arranged on the sizing steel die, and the second bolt penetrates through the bolt buckle and is fixedly spliced with the first nut.
Preferably, the method comprises the following steps: among the regularization operation platform, be provided with the down tube between two upper and lower horizontal cross bars, the down tube is fixed in on the connection pad through knot joint and bolt, and the montant lower extreme is provided with articulated base.
Preferably, the method comprises the following steps: still including shelving in guardrail base and removing operation platform, it includes operation platform, steel shotcrete, horizontal shaft, gyro wheel and I-steel to shelve in guardrail base and remove operation platform, operation platform lower part symmetry is provided with the steel shotcrete, and horizontal shaft is connected to the steel shotcrete, and horizontal shaft both ends are provided with the gyro wheel, and the gyro wheel is arranged in the I-steel recess.
The construction method of the active-service open-web arch bridge comprehensive reinforcing structure comprises the following steps:
1) grouting and reinforcing filler of the abdominal arch and the arch back: sealing the abdominal arch backs at two sides of the arch bridge by a customized template through a first anchor bolt, drilling a grouting hole on the bridge floor, simultaneously putting a sleeve, pumping foam concrete for grouting, and adopting a symmetrical synchronous grouting technology;
2) treating arch ring pointing and cracks by pressure grouting: positioning a position to be drilled on the abdominal arch transverse wall, fixing a first steel plate with a bolt hole at the drill hole through a first bolt after drilling, welding and fixing two ends of a transverse steel pipe and the first steel plate with the bolt hole, fixing an arc-shaped pressing panel at the abdominal arch ring through a second anchor bolt, supporting an arc-shaped pressing panel bottom plate at the bottom of the arc-shaped pressing panel through a vertical steel pipe, and performing pressure grouting on the arch ring and cracks by arranging the vertical steel pipe between the transverse steel pipe and the arc-shaped pressing panel;
3) and (3) reinforcing the arch transverse wall: planting bars into the arched transverse wall, binding a first reinforcing mesh and the planted bars to form a reinforcing steel bar framework, installing a first template outside the reinforcing steel bar framework, arranging steel pipe crossbars between the first templates on two sides of the transverse wall, pouring concrete into the templates, and removing the system after the concrete reaches the strength;
4) reinforcing the enlarged section of the main arch ring: the method comprises the following steps of (1) drilling holes in the arch of a main arch ring, implanting main arch ring embedded bars, binding a second steel bar net outside the main arch ring embedded bars to form a framework, installing a second template outside the framework, fixing a U-shaped steel belt on the main arch ring through a main arch ring anchor bolt, and pouring concrete into the template;
5) repairing the reinforced concrete guardrail: splicing the two shaped steel dies, fixing the two shaped steel dies through a second bolt and a first nut, pouring concrete into the shaped steel dies, and removing the shaped steel dies after the concrete reaches the strength;
6) bridge deck pavement replacement: the method comprises the steps of arranging I-shaped steel on a guardrail base, arranging idler wheels in I-shaped steel grooves, using an operation platform as an operation platform, conducting drilling and bar planting operation on a bridge deck, meanwhile, using the operation platform as a platform for binding a steel reinforcement framework, pouring concrete after a template is installed, and using the operation platform as a construction platform for vibrating and scraping operation.
Preferably, the method comprises the following steps: in the step 1), grouting holes close to the side wall are constructed firstly, and then grouting holes far away from the side wall are constructed.
The invention has the beneficial effects that:
1. the structure can solve the problem of comprehensive reinforcement construction of an active-service open-web arch bridge with limited construction conditions, is suitable for various working conditions during construction, and has a wider application range.
2. The side wall support type arc-shaped pressing plate integrally closed pressure grouting system is beneficial to closing of the arc-shaped arch ring and fixing of the template.
3. The invention relates to a concrete for constructing a rib-planting net hanging model of an arch upper side wall, which adopts a steel pipe pair-supporting model supporting system and solves the problem of difficult model supporting and fixing of a cross wall of a abdominal arch.
4. The invention relates to a main arch ring self-hanging type steel bar planting template hanging net molded concrete, which solves the problems of large span, high clear space and difficult formwork support of a main arch ring.
5. The shaping operation platform adopts the angle-adjustable base, and is favorable for supporting and fixing the arc-shaped arch ring.
6. The movable platform placed on the guardrail bases at the two sides can be used as a platform for planting bars and binding the steel bar frameworks and can also be used as a construction platform for vibrating and scraping bridge deck concrete, so that the bridge deck steel bar frameworks can be protected from being damaged by the dead weight and pressure of operators, an operation platform is provided for construction, and the construction quality and efficiency can be improved.
Drawings
FIG. 1 is a schematic view of an active-service open-web arch bridge comprehensive reinforcing structure of the invention;
FIG. 2 is a schematic view of an abdominal arch and arch back filler grouting reinforcement structure and a bridge deck drilling hole;
FIG. 3 is a schematic view of a pressure grouting treatment arch ring pointing and cracking structure;
FIG. 4 is a schematic view of a reinforced structure of the transverse wall of the arch;
FIG. 5 is a schematic view of a main arch ring reinforced cross-section structure;
FIG. 6 is a schematic view illustrating a repairing structure of a reinforced concrete guard rail;
FIG. 7 is a schematic structural diagram of a sizing operation platform;
FIG. 8 is a schematic view of a partial configuration of a sizing operation platform;
fig. 9 is a structural view of a mobile operating platform resting on a guardrail base.
Description of reference numerals: 1. the steel bar concrete pile comprises a sleeve, 2 first anchor bolts, 3 customized templates, 4 grouting holes, 5 arc-shaped pressure plate panels, 6 second anchor bolts, 7 wedge-shaped rubber cushion blocks, 8 first steel plates with bolt holes, 9 first bolts, 10 transverse steel pipes, 11 arc-shaped pressure plate bottom plates, 12 cushion blocks, 13 vertical steel pipes, 14 steel bars, 15 first steel meshes, 16 rubber cushion blocks, 17 first templates, 18 steel pipe crossbars, 19 third anchor bolts, 20 master arch ring anchor bolts, 21U-shaped steel belts, 22 second steel meshes, 23 bolt holes, 24 second templates, 25 master arch ring steel bars, 26 shaped steel molds, 27 bolt buckles, 28 second bolts, 29 first nuts, 30 fourth anchor bolts, 31 third templates, 32 second steel plates with bolt holes, 33 transverse short rods, 34 hinged bases, 35 bolt pins, 36 horizontal rods, 37 diagonal rods, 38 vertical rods, 39 connecting plates, 40 horizontal longitudinal rods, 41 buckle joints, 42 second nuts, 41 buckle joints, 42 transverse rods, 55 operating platform, 56 steel support, 57 transverse wheel shaft, 58 roller and 59I-steel.
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.
Example one
The invention relates to an active-service open-web type arch bridge comprehensive reinforcing structure which mainly comprises an arch-back filler grouting reinforcement of an arch, an arch ring pointing and cracking structure treated by pressure grouting, an arch upper side wall reinforcing structure, a main arch ring section-enlarging reinforcing structure, a reinforced concrete guardrail repairing structure and a sizing operation platform.
The utility model provides a ventral arch hunch back filler slip casting reinforced structure, mainly includes sleeve pipe, crab-bolt, customization template, slip casting hole, and the hunch side wall is provided with customization template 3, and first crab-bolt 2 is fixed customization template 3 at the hunch side wall, and the bridge floor is provided with slip casting hole 4, and the downthehole sleeve pipe 1 that is provided with of slip casting.
The utility model provides a pressure grouting handles hunch circle crack and crack structure, mainly includes arc clamp plate panel, crab-bolt, wedge rubber cushion, bolt hole steel sheet, bolt, horizontal steel pipe, arc clamp plate bottom plate, cushion, vertical steel pipe, arc clamp plate 5 passes through second crab-bolt 6 to be fixed in abdomen arch hunch circle department, first bolt hole steel sheet 8 is fixed in the abdomen arch diaphragm wall by first bolt 9, horizontal steel pipe 10 and first bolt hole steel sheet 8 welded fastening, vertical steel pipe 13 is to propping between arc clamp plate bottom plate 11 and horizontal steel pipe 10, is provided with wedge rubber cushion 7 between vertical steel pipe 13 and the arc clamp plate bottom plate 11, is provided with cushion 12 between vertical steel pipe 13 and the horizontal steel pipe 10.
The utility model provides an encircle diaphragm wall reinforced structure, mainly includes bar planting, reinforcing bar net, rubber cushion, template, steel pipe stull, crab-bolt, bar planting 14 sets up in the side wall, and first reinforcing bar net 15 forms the reinforcing bar skeleton with 14 ligatures of bar planting are fixed, and the reinforcing bar skeleton is provided with first template 17 outward, is provided with third crab-bolt 19 on the first template 17, and third crab-bolt 19 implants encircles last diaphragm wall fixed die plate, and the two way is provided with steel pipe stull 18 between the first template 17 of last diaphragm wall, is provided with rubber cushion 16 between the steel pipe stull 18.
The utility model provides a main arch ring increase cross-section reinforced structure, mainly includes main arch ring crab-bolt, U type steel band, reinforcing bar net, bolt hole, template, main arch ring plant bar 25 and second reinforcing bar net 22 ligature become framework of steel reinforcement, and framework of steel reinforcement is provided with second template 24 outward, is provided with bolt hole 23 on the U type steel band 21, and main arch ring crab-bolt 20 is fixed in main arch ring through bolt hole 23 with U type steel band 21, and U type steel band 21 hangs second template 24 in main arch ring.
A reinforced concrete guardrail repairing structure mainly comprises a shaped steel die, a bolt buckle, a bolt and a nut, wherein the bolt buckle 27 is arranged on the shaped steel die 26, and a second bolt 28 penetrates through the bolt buckle 27 and a first nut 29 to splice and fix the shaped steel die 26.
The utility model provides a regularization operation platform, mainly includes crab-bolt, template, takes bolt hole steel sheet, horizontal quarter butt, articulated base, bolt, horizontal cross rod, down tube, montant, connection pad, horizontal vertical pole, lock joint, nut, second takes bolt hole steel sheet 32 to be fixed in the abdominal arch diaphragm wall through fourth crab-bolt 30, horizontal cross rod 36 is connected through connection pad 39 with montant 38, be provided with lock joint 41 on the connection pad 39. The knot connects and passes through horizontal cross bar 36, horizontal vertical pole 40 and horizontal quarter butt 33 of bolt 35 fixed, and the horizontal quarter butt 33 other end welds on second area bolt hole steel sheet 32, is provided with down tube 37 between two upper and lower horizontal cross bars 36, and down tube 37 is fixed in on connecting pad 39 through knot connects 41 and bolt 35, and the montant 38 lower extreme is provided with articulated base 34, third template 31 sets up in the structure superiors.
A movable operation platform placed on a guardrail base mainly comprises an operation platform, steel supports, transverse wheel shafts, idler wheels and I-shaped steel, wherein the steel supports 56 are symmetrically arranged below an operation platform 55, the steel supports 56 are connected with the transverse wheel shafts 57, the idler wheels 58 are arranged at two ends of each transverse wheel shaft 57, and the idler wheels 58 are arranged in grooves of the I-shaped steel 59.
Example two
A construction method of an active-service open-web arch bridge comprehensive reinforcing structure comprises the following steps:
1) grouting and reinforcing filler of the abdominal arch and the arch back: the method comprises the steps of sealing the abdominal arch backs at two sides of an arch bridge by a customized template 3 through first anchor bolts 2, drilling grouting holes in a bridge floor, simultaneously putting a sleeve 1, pumping foam concrete for grouting, adopting a symmetrical synchronous grouting technology, namely constructing the grouting holes close to the side walls, constructing the grouting holes far away from the side walls, perforating and grouting the longitudinal bridge in two sequences, if 30 grouting holes are arranged in 1 row in the longitudinal direction, numbering according to the sequence, and performing hole plugging operation according to 1 and 30, 3 and 28 … …, and 2 and 29 … … after grout is solidified.
2) Treating arch ring pointing and cracks by pressure grouting: the position that needs drilling is fixed a position on the abdominal arch transverse wall, fix first bolt hole steel sheet 8 in drill hole department through first bolt 9 after the drilling, with horizontal steel pipe 10 both ends and first bolt hole steel sheet 8 welded fastening, fix arc pressure plate 5 in abdominal arch encirclement department through second crab-bolt 6, support arc pressure plate bottom plate 11 in arc pressure plate 5 bottom through vertical steel pipe 13, vertical steel pipe 13 is located between horizontal steel pipe 10 and the arc pressure plate 5, set up wedge rubber cushion 7 between arc pressure plate bottom plate 11 and vertical steel pipe 13, set up cushion 12 between vertical steel pipe 13 lower extreme and horizontal steel pipe 10, carry out pressure grouting to encirclement and crack.
3) And (3) reinforcing the arch transverse wall: planting bars 14 are implanted at the position of the arched transverse wall, a first reinforcing mesh 15 and the planting bars 14 are bound to form a steel bar framework, a first template 17 is installed outside the steel bar framework, the first template 17 and the steel bar framework are fixed through a third anchor bolt 19, a steel pipe transverse strut 18 is arranged between the templates on the two sides of the transverse wall, a rubber cushion block 16 is arranged between the steel pipe transverse strut 18 and the first template 17, concrete is poured into the template, and the system is dismantled after the concrete reaches strength.
4) Reinforcing the enlarged section of the main arch ring: the main arch ring planting bars 23 are drilled in the arch of the main arch ring, a second reinforcing mesh 22 is bound outside the main arch ring planting bars 23 to form a framework, a second template 24 is installed outside the framework, the U-shaped steel belt 21 is fixed on the main arch ring through a main arch ring anchor bolt 20, and concrete is poured into the template.
5) Repairing the reinforced concrete guardrail: the two shaped steel dies 26 are spliced and fixed through the second bolt 28 and the first nut 29, concrete is poured into the shaped steel dies 26, and the shaped steel dies 26 are removed after the concrete reaches the strength.
6) Bridge deck pavement replacement: the joist steel 59 is arranged on the guardrail base, the idler wheels 58 are arranged in grooves of the joist steel 59, the operation platform 55 serves as an operation platform, drilling and bar planting operations are carried out on the bridge floor, meanwhile, the operation platform serves as a platform for binding a steel reinforcement framework, concrete is poured after a template is installed, and the operation platform 55 can serve as a construction platform for vibrating and scraping operations.
The invention relates to an active-service open-web arch bridge comprehensive reinforcement structure and a construction method, which provide corresponding construction structures for open-web arch back reinforcement, arch ring pointing and crack reinforcement, arch upper cross wall reinforcement, main arch ring reinforcement, reinforced concrete guardrail repair, open-web arch reinforcement and bridge deck pavement replacement of open-web arch bridges.
Claims (10)
1. The utility model provides a reinforced structure is synthesized to void formula arch bridge in active service which characterized in that: the method comprises the steps of pressure grouting treatment of arch ring pointing and crack structures and a sizing operation platform;
the arch ring pointing and cracking structure for pressure grouting treatment comprises an arc-shaped pressing plate panel (5), a first steel plate (8) with bolt holes, a transverse steel pipe (10) and a vertical steel pipe (13), wherein the arc-shaped pressing plate panel (5) is fixed at an arch ring of an abdominal arch through a second anchor bolt (6), the first steel plate (8) with bolt holes is fixed on a transverse wall of the abdominal arch through a first bolt (9), the transverse steel pipe (10) is fixedly welded with the first steel plate (8) with bolt holes, and the vertical steel pipe (13) is supported between an arc-shaped pressing plate bottom plate (11) and the transverse steel pipe (10) in a butt mode;
regularization operation platform, including third template (31), second area bolt hole steel sheet (32), horizontal quarter butt (33), horizontal pole (36), montant (38), connection pad (39), horizontal vertical pole (40) and lock joint (41), second area bolt hole steel sheet (32) are fixed in the abdominal arch transverse wall through fourth crab-bolt (30), be provided with lock joint (41) on connection pad (39), the lock joint passes through horizontal pole (36), horizontal vertical pole (40) and horizontal quarter butt (33) are fixed in bolt (35), connection pad (39) internal fixation connection montant (38), and the horizontal quarter butt (33) other end welds on second area bolt hole steel sheet (32), third template (31) set up in regularization operation platform the superiors.
2. The active empty-belly arch bridge integrated reinforcing structure according to claim 1, wherein: still include the abdominal arch hunch back of the body filler slip casting reinforced structure, abdominal arch hunch back of the body filler slip casting reinforced structure includes sleeve pipe (1), customization template (3) and slip casting hole (4), and the hunch side wall is provided with customization template (3), and customization template (3) are fixed at the hunch side wall through first crab-bolt (2), and the bridge floor is provided with slip casting hole (4), and the downthehole sleeve pipe (1) that is provided with of slip casting.
3. The active empty-belly arch bridge integrated reinforcing structure according to claim 1, wherein: in the structure for treating pointing and cracking of the arch ring by pressure grouting, an arc-shaped pressing plate bottom plate (11) is arranged on the lower portion of an arc-shaped pressing plate (5), a wedge-shaped rubber cushion block (7) is arranged between a vertical steel pipe (13) and the arc-shaped pressing plate bottom plate (11), and a cushion block (12) is arranged between the vertical steel pipe (13) and a transverse steel pipe (10).
4. The active empty-belly arch bridge integrated reinforcing structure according to claim 1, wherein: still including encircleing stull reinforced structure, encircleing stull reinforced structure includes plant muscle (14), first reinforcing bar net (15), first template (17) and steel pipe stull (18), plant muscle (14) and set up in the side wall, and first reinforcing bar net (15) and plant muscle (14) ligature are fixed to form the steel bar skeleton, and the steel bar skeleton is provided with first template (17) outward, is provided with third crab-bolt (19) on first template (17), is provided with steel pipe stull (18) between two ways arch stull's template (17), is provided with rubber cushion (16) between steel pipe stull (18) and template (17).
5. The active empty-belly arch bridge integrated reinforcing structure according to claim 1, wherein: still include main arch ring increase cross-section reinforced structure, main arch ring increase cross-section reinforced structure includes U type steel band (21), second reinforcing bar net (22) and second template (24), main arch ring plant muscle (25) become framework of steel reinforcement with second reinforcing bar net (22) ligature, framework of steel reinforcement is provided with second template (24) outward, is provided with bolt hole (23) on U type steel band (21), and main arch ring crab-bolt (20) are fixed in main arch ring through bolt hole (23) with U type steel band (21), and second template (24) are hung in main arch ring through U type steel band (21).
6. The active empty-belly arch bridge integrated reinforcing structure according to claim 1, wherein: the reinforced concrete guardrail repairing structure comprises a shaped steel die (26), bolt buckles (27), a second bolt (28) and a first nut (29), wherein the bolt buckles (27) are arranged on the shaped steel die (26), and the second bolt (28) penetrates through the bolt buckles (27) and the first nut (29) to splice and fix the shaped steel die (26).
7. The active empty-belly arch bridge integrated reinforcing structure according to claim 1, wherein: in the regularization operation platform, be provided with down tube (37) between two upper and lower horizontal pole (36), down tube (37) are fixed in on connection pad (39) through knot joint (41) and bolt (35), and montant (38) lower extreme is provided with articulated base (34).
8. The active empty-belly arch bridge integrated reinforcing structure according to claim 1, wherein: the guardrail base moving operation platform is further arranged and comprises an operation platform (55), steel supports (56), transverse wheel shafts (57), idler wheels (58) and I-shaped steel (59), the steel supports (56) are symmetrically arranged on the lower portion of the operation platform (55), the steel supports (56) are connected with the transverse wheel shafts (57), the idler wheels (58) are arranged at two ends of each transverse wheel shaft (57), and the idler wheels (58) are arranged in grooves of the I-shaped steel (59).
9. A construction method of the active empty-belly arch bridge comprehensive reinforcement structure according to claim 1, which is characterized by comprising the following steps:
1) grouting and reinforcing filler of the abdominal arch and the arch back: sealing the abdominal arch backs at two sides of the arch bridge by a customized template (3) through a first anchor bolt (2), drilling a grouting hole on the bridge floor, simultaneously setting a sleeve (1), pumping foam concrete for grouting, and adopting a symmetrical synchronous grouting technology;
2) treating arch ring pointing and cracks by pressure grouting: positioning a position to be drilled on the abdominal arch transverse wall, fixing a first steel plate (8) with a bolt hole at the position of the drill hole through a first bolt (9) after drilling, welding and fixing two ends of a transverse steel pipe (10) and the first steel plate (8) with the bolt hole, fixing an arc-shaped pressure plate (5) at the position of an abdominal arch ring through a second anchor bolt (6), supporting an arc-shaped pressure plate bottom plate (11) at the bottom of the arc-shaped pressure plate (5) through a vertical steel pipe (13), arranging the vertical steel pipe (13) between the transverse steel pipe (10) and the arc-shaped pressure plate (5), and performing pressure grouting on the arch ring and cracks;
3) and (3) reinforcing the arch transverse wall: planting bars (14) at the arch transverse wall, binding a first reinforcing mesh (15) and the planted bars (14) to form a reinforcing steel bar framework, installing a first template (17) outside the reinforcing steel bar framework, arranging steel pipe transverse struts (18) between the first templates (17) at two sides of the transverse wall, pouring concrete into the templates, and dismantling the system after the concrete reaches the strength;
4) reinforcing the enlarged section of the main arch ring: the method comprises the steps that main arch ring embedded bars (23) are drilled in the arch of a main arch ring, a second reinforcing mesh (22) is bound outside the main arch ring embedded bars (23) to form a framework, a second template (24) is installed outside the framework, a U-shaped steel belt (21) is fixed on the main arch ring through a main arch ring anchor bolt (20), and concrete is poured into the template;
5) repairing the reinforced concrete guardrail: splicing the two sizing steel moulds (26) and fixing the two sizing steel moulds through a second bolt (28) and a first nut (29), pouring concrete into the sizing steel moulds (26), and removing the sizing steel moulds (26) after the concrete reaches the strength;
6) bridge deck pavement replacement: the method comprises the steps of placing I-shaped steel (59) on a guardrail base, placing idler wheels (58) in grooves of the I-shaped steel (59), taking an operating platform (55) as an operating platform, conducting drilling and bar planting operation on a bridge floor, meanwhile, taking the operating platform as a platform for binding a steel reinforcement framework, pouring concrete after installing a template, and taking the operating platform (55) as a construction platform for vibrating and scraping operation.
10. The construction method of the active empty-belly arch bridge comprehensive reinforcement structure of claim 9, characterized by comprising the following steps: in the step 1), grouting holes close to the side wall are constructed firstly, and then grouting holes far away from the side wall are constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650553.8A CN114370009B (en) | 2021-12-30 | 2021-12-30 | Active hollow arch bridge comprehensive reinforcement structure and construction method |
Applications Claiming Priority (1)
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| CN215210463U (en) * | 2021-06-18 | 2021-12-17 | 松溪县交通运输局 | Corrugated steel plate cover arch reinforced structure suitable for single-hole masonry arch bridge |
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| CN114370009B (en) | 2024-05-24 |
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