CN113106870A - Construction method of assembled integral hollow slab bridge - Google Patents
Construction method of assembled integral hollow slab bridge Download PDFInfo
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- CN113106870A CN113106870A CN202110330242.7A CN202110330242A CN113106870A CN 113106870 A CN113106870 A CN 113106870A CN 202110330242 A CN202110330242 A CN 202110330242A CN 113106870 A CN113106870 A CN 113106870A
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- hollow slab
- main body
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- hollow
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 239000004567 concrete Substances 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 9
- 238000007711 solidification Methods 0.000 claims abstract description 4
- 230000008023 solidification Effects 0.000 claims abstract description 4
- 238000007569 slipcasting Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 description 5
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling 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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The invention discloses a construction method of an assembled integral hollow slab bridge, which comprises the steps of prefabricating a hollow slab main body according to design requirements, transporting the processed assembled hollow slab main body to a bridge construction site, hoisting the assembled hollow slab main body in place, and transversely tensioning and stabilizing the assembled hollow slab main body; the bottoms of the hollow plate main bodies are integrated and fixed through the stabilizing assembly, and the bottoms of gaps between the adjacent hollow plate main bodies are blocked; after the hollow slab main body is tensioned and the bottom of the hollow slab main body is sealed, concrete is poured into gaps between adjacent hollow slab main bodies to form a sealing layer, the top surfaces of the hollow slab main bodies are kept flat, then steel bar binding steel bar net racks are erected on the top surfaces formed by erecting the hollow slab main bodies, meanwhile, wooden baffles are erected on the edge of a bridge floor, concrete is poured between the wooden baffle plates on the top surfaces of the hollow slab main bodies and the steel bar net racks, after the concrete solidification strength reaches the standard, the baffles on two sides are removed, the construction of a hollow slab bridge is completed, and the bearing capacity and the surface flatness of the bridge are improved.
Description
Technical Field
The invention relates to the technical field of hollow slab bridges, in particular to a construction method of an assembled integral type hollow slab bridge.
Background
At present, a medium-small-span highway bridge with a single-span within a range of less than 20m usually adopts a structural form of a reinforced concrete assembly type hollow slab bridge, after hollow slabs of the bridge are processed in a factory, prefabricated hollow slabs are transported and hoisted in place, concrete is poured at seam openings between adjacent hollow slabs, all the hollow slabs are connected into a whole along the bridge in the transverse direction, however, when the seam openings are poured, the concrete drips along the seam openings, so that the flatness of the bridge surface is poor after pouring, and because the adjacent hollow slabs are connected by the concrete only, the capacity of transferring shearing force is limited, the transverse integrity along the bridge is poor, cracks are easy to appear, the service life of the hollow slab bridge is influenced, and hidden dangers are hidden for bridge passing safety.
Disclosure of Invention
The invention aims to provide a construction method of an assembled integral hollow slab bridge, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a construction method of an assembled integral hollow slab bridge is characterized by comprising the following steps:
s1, processing of hollow slab
Prefabricating a hollow plate main body according to design requirements, wherein a plurality of through holes in the length direction are formed in the hollow plate main body, a transverse through hole is formed between two ends of the side wall of the hollow plate main body, and a vertical through hole is formed in the bottom surface of the hollow plate main body;
s2 hoisting hollow slab
Transporting the processed fabricated hollow slab main body to a bridge construction site and hoisting the fabricated hollow slab main body in place, wherein the hoisting position of the hollow slab main body strictly meets the construction tolerance requirement, and the transverse through holes in the plurality of hollow slab main bodies are aligned;
s3, transversely tensioning
After the plurality of hollow slab main bodies are hoisted and erected, tensioning assemblies are installed in the aligned transverse through holes of the plurality of hollow slab main bodies, and the plurality of transversely arranged hollow slab main bodies are tensioned and attached, so that the connection tightness is improved;
s4, sealing and stabilizing the bottom
After the hollow plate main bodies are transversely tensioned and fixed, the bottoms of the plurality of hollow plate main bodies are integrated and fixed through the stabilizing assemblies at the vertical through holes, and the bottoms of gaps between the adjacent hollow plate main bodies are blocked;
s5 pouring of bridge top surface
After the hollow slab main body is tensioned and the bottom of the hollow slab main body is sealed, concrete is poured into a gap between adjacent hollow slab main bodies to form a sealing layer, the top surfaces of the hollow slab main bodies are kept flat, then the top surfaces formed by erecting the hollow slab main bodies are bound with a steel bar net rack through steel bars, meanwhile, the wooden baffles are erected at the edge of a bridge floor, the concrete is poured between the wooden baffle plates on the top surfaces of the hollow slab main bodies and the steel bar net rack, and after the concrete solidification strength reaches the standard, the baffles on two sides are removed to complete the construction of the hollow slab bridge.
In a preferred embodiment, in step S1, the axes of the horizontal through hole and the vertical through hole are perpendicular to the axis of the through hole in the length direction of the hollow board main body, the distance between the horizontal through hole and the end surface of the hollow board main body is one eighth of the length of the hollow board main body, and the distance between the vertical through hole and the end surface of the hollow board main body is one quarter of the length of the hollow board main body.
In a preferred embodiment, in step S3, the tightening assembly includes a transverse through hole, the transverse through hole penetrates through outer walls of two sides of the hollow plate main body, a sheath tube is sleeved between the transverse through holes, a steel cable is slidably sleeved in the sheath tube, and two ends of the steel cable penetrate through the sheath tube and are provided with an anchor.
In a preferred embodiment, the protective sleeve is a stainless steel tube, the length of the protective sleeve is equal to the sum of the widths of the hollow plate main bodies, and the two ends of the steel cable extend out of the end face of the protective sleeve by 70-90 cm.
An embodiment of preferred, in step S4, the subassembly that stabilizes includes vertical through-hole and rubber bag, open the bottom of hollow plate main part has vertical through-hole, the rubber bag runs through vertical through-hole and stretches into in the length through-hole of hollow plate main part, the slip casting pipe is cup jointed to the last fixed of rubber bag, the vertical through-hole of slip casting pipe joint, anchor bolt is established to vertical through-hole and rubber bag interpolation, the concrete is filled in slip casting pipe and the rubber bag, the bottom surface laminating of hollow plate main part is equipped with the reinforcing steel board, reinforcing steel board and threaded connection lock nut are run through to the bottom of anchor bolt.
In an embodiment of the present invention, the rubber bladder is a hollow spherical structure, the diameter of the rubber bladder is greater than the diameter of the through hole in the length direction of the hollow plate main body, the outer wall of the anchor bolt is fixedly provided with a plurality of positioning rods along the circumferential direction, the positioning rods are tightly attached to the inner wall of the grouting pipe, the anchor bolt is vertically positioned by attaching the positioning rods to the grouting pipe, and the concrete can be smoothly injected into the rubber bladder.
In a preferred embodiment, the concrete filled in the rubber bag has a strength grade greater than 80% of the strength of the concrete of the member of the hollow slab body.
Compared with the prior art, the invention has the beneficial effects that:
1. after the plurality of hollow slab main bodies are hoisted and erected, after the plurality of hollow slab main bodies are aligned, the protecting sleeve is inserted into the transverse through hole, then the steel cable is arranged along the protecting sleeve in a penetrating manner, and two ends of the steel cable extend out of the protecting sleeve and are tensioned through an anchorage device, so that transverse tensioning force is applied to the hollow slab main bodies, and the transverse bearing capacity of the built bridge is improved;
2. the method comprises the following steps of plugging a rubber bag into a through hole in the length direction of a hollow plate main body along a vertical through hole, clamping a grouting pipe with the vertical through hole, extending one end of an anchor bolt into the rubber bag along the grouting pipe, injecting concrete into the rubber bag through the grouting pipe, enabling the rubber bag to tightly press the hollow plate main body after the concrete is filled, fixing the anchor bolt after the concrete is solidified, drilling a corresponding through hole in a reinforced steel plate, attaching the reinforced steel plate to the hollow plate main body, enabling the anchor bolt to penetrate through the reinforced steel plate, and finally locking and fixing through a locking bolt, so that the bearing capacity of the bridge is further improved;
3. the bottom of the seam between the main bodies of the hollow plates is sealed after the reinforced steel plates are installed, so that a sealing layer and a bridge floor are convenient to pour, the surface of the bridge after construction is smooth, the bridge floor strength is prevented from being reduced due to leakage of concrete at the seam, and the service life of the bridge is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged structural view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is an enlarged structural diagram of the structure B in FIG. 1 according to the present invention.
In the figure: 1. a hollow slab body; 2. a tension assembly; 21. a transverse through hole; 22. sheathing a pipe; 23. a steel cord; 24. an anchorage device; 3. a stabilizing assembly; 31. a vertical through hole; 32. a rubber bladder; 33. a grouting pipe; 34. an anchor bolt; 35. reinforcing the steel plate; 36. locking the nut; 4. a sealing layer; 5. and (4) reinforcing mesh.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a construction method of an assembled integral hollow slab bridge is characterized by comprising the following steps:
s1, processing of hollow slab
Prefabricating a hollow plate main body 1 according to design requirements, wherein a plurality of through holes in the length direction are formed in the hollow plate main body 1, a transverse through hole 21 is formed between two ends of the side wall of the hollow plate main body 1, and a vertical through hole 31 is formed in the bottom surface of the hollow plate main body 1;
s2 hoisting hollow slab
Transporting the processed fabricated hollow slab main body 1 to a bridge construction site and hoisting the fabricated hollow slab main body in place, wherein the hoisting position of the hollow slab main body 1 strictly meets the construction tolerance requirement, and the transverse through holes 21 on the plurality of hollow slab main bodies 1 are aligned;
s3, transversely tensioning
After the plurality of hollow slab main bodies 1 are hoisted and erected, after the plurality of hollow slab main bodies 1 are aligned, the protecting sleeve 22 is inserted into the transverse through hole 21, then the steel cable 23 penetrates through the protecting sleeve 22, and two ends of the steel cable 23 extend out of the protecting sleeve 22 and are tensioned through the anchorage device 24, so that transverse tensioning force is applied to the hollow slab main bodies 1, and the transverse bearing capacity of the built bridge is improved;
s4, sealing and stabilizing the bottom
After the hollow slab main body 1 is transversely tensioned and fixed, the rubber bag 32 is in a shriveled state initially, the rubber bag 32 can be plugged into a through hole in the length direction of the hollow slab main body 1 along the vertical through hole 31, then the grouting pipe 33 is clamped with the vertical through hole 31, one end of the anchor bolt 34 extends into the rubber bag 32 along the grouting pipe 33, concrete is injected into the rubber bag 32 through the grouting pipe 33, the rubber bag 32 compresses the hollow slab main body 1 after the concrete is filled, the anchor bolt is fixed after the concrete is solidified, then a corresponding through hole is drilled in the reinforced steel plate 35, the reinforced steel plate 35 is attached to the hollow slab main body 1, the anchor bolt 34 penetrates through the reinforced steel plate 35, and finally the reinforced steel plate 35 is locked and fixed through the locking bolt 36, so that the bearing capacity of a bridge is further improved, the bottom of a seam between the hollow slab main bodies 1 is sealed, and subsequent pouring is facilitated;
s5 pouring of bridge top surface
After the hollow slab main body 1 is tensioned and the bottom of the hollow slab main body is sealed, concrete is poured into gaps between adjacent hollow slab main bodies 1 to form a sealing layer, the top surfaces of the hollow slab main bodies 1 are kept flat, then reinforcing steel bar binding net racks are erected on the top surfaces formed by erecting the hollow slab main bodies 1, meanwhile, wooden baffles are erected on the edge of a bridge floor, concrete is poured between the wooden baffle plates on the top surfaces of the hollow slab main bodies 1 and the reinforcing steel bar net racks, and after the concrete solidification strength reaches the standard, the baffles on two sides are removed, so that the construction of a hollow slab bridge is completed.
In a preferred embodiment, in step S1, the axes of the horizontal through hole 21 and the vertical through hole 31 are perpendicular to the longitudinal through hole axis of the hollow board main body 1, the distance from the horizontal through hole 21 to the end surface of the hollow board main body 1 is one eighth of the length of the hollow board main body 1, and the distance from the vertical through hole 31 to the end surface of the hollow board main body 1 is one quarter of the length of the hollow board main body 1.
In step S3, the tensioning assembly 2 includes a transverse through hole 21, the transverse through hole 21 penetrates through outer walls of two sides of the hollow slab main body 1, a sheath tube 22 is sleeved between the transverse through holes 21, a steel cable 23 is slidably sleeved in the sheath tube 22, two ends of the steel cable 23 penetrate through the sheath tube 22 and are provided with anchors 24, the sheath tube 22 is a stainless steel tube, the length of the sheath tube 22 is equal to the sum of the widths of the plurality of hollow slab main bodies 1, and two ends of the steel cable 23 extend out of an end face of the sheath tube 22 by 70-90cm, so that the hollow slab main body 1 is aligned, the sheath tube 22 is inserted into the transverse through hole 21, the steel cable 23 penetrates through the sheath tube 22, two ends of the steel cable 23 extend out of the sheath tube 22 and are tensioned through the anchors 24, thereby applying a transverse tensioning force to.
In step S4, the stabilizing assembly 3 includes a vertical through hole 31 and a rubber bag 32, the bottom of the hollow plate body 1 is provided with the vertical through hole 31, the rubber bag 32 penetrates through the vertical through hole 31 and extends into the length through hole of the hollow plate body 1, the rubber bag 32 is fixedly sleeved with a grouting pipe 33, the grouting pipe 33 is clamped with the vertical through hole 31, an anchor bolt 34 is inserted into the vertical through hole 31 and the rubber bag 32, the grouting pipe 33 and the rubber bag 32 are filled with concrete, the bottom surface of the hollow plate body 1 is attached with a reinforced steel plate 35, the bottom of the anchor bolt 34 penetrates through the reinforced steel plate 35 and is in threaded connection with a lock nut 36, the rubber bag 32 is in a dry-shriveled state initially, the rubber bag 32 can be plugged into the through hole in the length direction of the hollow plate body 1 along the vertical through hole 31, then the grouting pipe 33 is clamped with the vertical through hole 31, one end of the anchor bolt 34 extends into the rubber bag 32 along the grouting pipe 33, the concrete is injected into the rubber bag, make rubber bag 32 compress tightly hollow plate main part 1 after the concrete is filled, anchor bolt is fixed after the concrete solidifies, then drill out corresponding through-hole at reinforced steel plate 35, will reinforce steel plate 35 laminating hollow plate main part 1 and make anchor bolt 34 run through reinforced steel plate 35, finally lock fixedly through locking bolt 36 to further improve the bearing capacity of bridge, and seal the seam mouth bottom between hollow plate main part 1, be convenient for follow-up pouring.
Further, rubber bag 32 is the hollow spherical structure, and the diameter of rubber bag 32 is greater than the diameter of the 1 length direction through-hole of hollow plate main part, ensures that the hollow plate main part can laminate after the rubber bag 32 inflation, a plurality of locating levers of anchor bolt 34's outer wall along circumferencial direction fixed mounting, the inner wall of the dry closely laminating slip casting pipe 33 of locating lever, make anchor bolt 34 keep vertical location through locating lever laminating slip casting pipe 33, and can pour into the concrete smoothly in the rubber bag 32.
Further, the concrete filled in the rubber bladder 32 has a strength grade greater than 80% of the strength of the member concrete of the hollow slab body 1.
The working principle is as follows: the invention prefabricates a hollow slab main body 1 according to design requirements, a plurality of through holes in the length direction are arranged in the hollow slab main body 1, a transverse through hole 21 is arranged between two ends of the side wall of the hollow slab main body 1, a vertical through hole 31 is arranged on the bottom surface of the hollow slab main body 1, the processed assembled hollow slab main body 1 is transported to a bridge construction site and hoisted in place, the hoisting position of the hollow slab main body 1 strictly meets the construction tolerance requirement, the transverse through holes 21 on the plurality of hollow slab main bodies 1 are aligned, after the plurality of hollow slab main bodies 1 are hoisted and erected, a plurality of hollow slab main bodies 1 are aligned, a protective sleeve 22 is inserted into the transverse through hole 21, then a steel cable 23 is penetrated through the protective sleeve 22, two ends of the steel cable 23 extend out of the protective sleeve 22 and are tensioned through an anchorage device 24, thereby applying transverse tensioning force to the hollow slab main body 1, improving the transverse bearing capacity of the bridge after construction, the rubber bag 32 is in a shriveled state initially, the rubber bag 32 can be plugged into the through hole in the length direction of the hollow slab main body 1 along the vertical through hole 31, then the grouting pipe 33 is clamped with the vertical through hole 31, one end of the anchor bolt 34 extends into the rubber bag 32 along the grouting pipe 33, concrete is injected into the rubber bag 32 through the grouting pipe 33, the rubber bag 32 is tightly pressed against the hollow slab main body 1 after the concrete is filled, the anchor bolt is fixed after the concrete is solidified, then the corresponding through hole is drilled in the reinforced steel plate 35, the reinforced steel plate 35 is attached to the hollow slab main body 1, the anchor bolt 34 penetrates through the reinforced steel plate 35, and finally the reinforced steel plate 35 is locked and fixed through the locking bolt 36, so that the bearing capacity of the bridge is further improved, the bottom of a seam between the hollow slab main bodies 1 is sealed, subsequent pouring is convenient, after the hollow slab main body 1 is tensioned and the bottom is sealed, a sealing layer is poured into a gap between the adjacent hollow slab main, keep 1 top surface of hollow slab main part smooth, then erect the top surface that forms at hollow slab main part 1 and pass through reinforcing bar ligature reinforcing bar rack, erect wooden baffle simultaneously at the bridge floor edge, pour concrete between the wooden fender version of 1 top surface of hollow slab main part and reinforcing bar rack, after concrete setting strength reaches standard regulation, demolish the construction that both sides baffle accomplished hollow slab bridge promptly, the bridge surface balance of construction department, bearing capacity is high, avoid appearing phenomenons such as crackle in the use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A construction method of an assembled integral hollow slab bridge is characterized by comprising the following steps:
s1, processing of hollow slab
Prefabricating a hollow plate main body (1) according to design requirements, wherein a plurality of through holes in the length direction are formed in the hollow plate main body (1), a transverse through hole (21) is formed between two ends of the side wall of the hollow plate main body (1), and a vertical through hole (31) is formed in the bottom surface of the hollow plate main body (1);
s2 hoisting hollow slab
Transporting the processed fabricated hollow slab main body (1) to a bridge construction site and hoisting the fabricated hollow slab main body in place, wherein the hoisting position of the hollow slab main body (1) strictly meets the construction tolerance requirement, and the transverse through holes (21) on the plurality of hollow slab main bodies (1) are aligned;
s3, transversely tensioning
After the plurality of hollow slab main bodies (1) are hoisted and erected, tensioning assemblies (2) are installed in the aligned transverse through holes (21) of the plurality of hollow slab main bodies (1), and the plurality of transversely arranged hollow slab main bodies (1) are tensioned and attached to improve the connection tightness;
s4, sealing and stabilizing the bottom
After the hollow slab main bodies (1) are transversely tensioned and fixed, the bottoms of the hollow slab main bodies (1) are integrally fixed at the vertical through holes (21) through the stabilizing assemblies (3), and the bottoms of gaps between the adjacent hollow slab main bodies (1) are blocked;
s5 pouring of bridge top surface
After the hollow slab main body (1) is tensioned and the bottom of the hollow slab main body is sealed, concrete is poured into a gap between the adjacent hollow slab main bodies (1) to form a sealing layer, the top surfaces of the hollow slab main bodies (1) are kept flat, then reinforcing steel bar net racks are bound on the top surfaces formed by erecting the hollow slab main bodies (1) through reinforcing steel bars, meanwhile, wooden baffles are erected on the edge of a bridge floor, concrete is poured between the wooden baffle plates and the reinforcing steel bar net racks on the top surfaces of the hollow slab main bodies (1), and after the concrete solidification strength reaches the standard, the baffles on two sides are removed to complete the construction of the hollow slab bridge.
2. The construction method of an assembled integral type hollow slab bridge according to claim 1, wherein: in the step S1, the axes of the horizontal through hole (21) and the vertical through hole (31) are perpendicular to the axis of the through hole in the length direction of the hollow slab main body (1), the distance from the horizontal through hole (21) to the end face of the hollow slab main body (1) is one eighth of the length of the hollow slab main body (1), and the distance from the vertical through hole (31) to the end face of the hollow slab main body (1) is one quarter of the length of the hollow slab main body (1).
3. The construction method of an assembled integral type hollow slab bridge according to claim 1, wherein: in the step S3, the tensioning assembly (2) comprises a transverse through hole (21), the transverse through hole (21) penetrates through the outer walls of the two sides of the hollow plate main body (1), a protecting sleeve (22) is sleeved among the transverse through holes (21), a steel cable (23) is sleeved in the protecting sleeve (22) in a sliding mode, and two ends of the steel cable (23) penetrate through the protecting sleeve (22) and are provided with an anchorage device (24).
4. The construction method of an assembled integral type hollow slab bridge according to claim 3, wherein: the protective sleeve (22) is a stainless steel pipe, the length of the protective sleeve (22) is equal to the sum of the widths of the hollow plate main bodies (1), and the two ends of the steel cable (23) extend out of the end face of the protective sleeve (22) by 70-90 cm.
5. The construction method of an assembled integral type hollow slab bridge according to claim 1, wherein: in step S4, firm subassembly (3) include vertical through-hole (31) and rubber bag (32), open the bottom of hollow slab main part (1) has vertical through-hole (31), rubber bag (32) run through vertical through-hole (31) and stretch into in the length through-hole of hollow slab main part (1), fixed the slip casting pipe (33) of cup jointing on rubber bag (32), the vertical through-hole (31) of slip casting pipe (33) joint, anchor bolt (34) are established in vertical through-hole (31) and rubber bag (32) interpolation, the intussuseption concrete is filled in slip casting pipe (33) and rubber bag (32), the bottom surface laminating of hollow slab main part (1) is equipped with reinforced steel board (35), reinforced steel board (35) and threaded connection lock nut (36) are run through to the bottom of anchor bolt (34).
6. The construction method of an assembled integral type hollow slab bridge according to claim 5, wherein: rubber bag (32) are cavity spherical structure, and the diameter of rubber bag (32) is greater than the diameter of hollow slab main part (1) length direction through-hole, a plurality of locating levers of peripheral direction fixed mounting are followed to the outer wall of anchor bolt (34), the inner wall of locating lever closely laminating slip casting pipe (33) is done, makes anchor bolt (34) keep vertical location through locating lever laminating slip casting pipe (33), and can pour into the concrete smoothly in rubber bag (32).
7. The construction method of an assembled integral type hollow slab bridge according to claim 5, wherein: the strength grade of concrete filled in the rubber bag (32) is greater than 80% of that of member concrete of the hollow slab main body (1).
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| CN113738002A (en) * | 2021-08-25 | 2021-12-03 | 廖福琴 | Concrete precast hollow slab |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738002A (en) * | 2021-08-25 | 2021-12-03 | 廖福琴 | Concrete precast hollow slab |
| CN113738002B (en) * | 2021-08-25 | 2022-09-30 | 中交(临沂)建筑科技有限公司 | Concrete precast hollow slab |
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