CN111549664A - Pedestrian suspension bridge profiled steel sheet combined bridge deck system and construction method - Google Patents

Pedestrian suspension bridge profiled steel sheet combined bridge deck system and construction method Download PDF

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Publication number
CN111549664A
CN111549664A CN202010468477.8A CN202010468477A CN111549664A CN 111549664 A CN111549664 A CN 111549664A CN 202010468477 A CN202010468477 A CN 202010468477A CN 111549664 A CN111549664 A CN 111549664A
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China
Prior art keywords
steel sheet
profiled steel
bridge
profiled
bridge deck
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CN202010468477.8A
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Chinese (zh)
Inventor
刘丰洲
江甫
杜引光
吴强强
刘璋
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Zhejiang Communications Construction Group Co Ltd
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Zhejiang Communications Construction Group Co Ltd
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Priority to CN202010468477.8A priority Critical patent/CN111549664A/en
Publication of CN111549664A publication Critical patent/CN111549664A/en
Pending legal-status Critical Current

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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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D11/00—Suspension or cable-stayed bridges
    • E01D11/02—Suspension bridges
    • 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
    • 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
    • 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
    • E01D2101/30—Metal

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

A passenger suspension bridge profiled steel sheet combined bridge deck system comprises a steel structure stiffening beam, wherein the steel structure stiffening beam is formed by combining a plurality of cross beams and two or more than two longitudinal beams which are arranged in parallel, and the cross beams and the longitudinal beams are fixedly connected to form a stiffening beam frame structure; the tops of the cross beam and the longitudinal beam are positioned on the same horizontal plane, a profiled steel sheet is laid on an exposed area defined by the cross beam and the longitudinal beam, and the edge of the profiled steel sheet is connected with the cross beam or the longitudinal beam; a reinforced concrete bridge deck is cast on the profiled steel sheet in situ; compared with the prior art, the bridge deck structure has the advantages of safe and reliable stress, high bearing capacity, reinforced bridge deck structure integrity, convenient construction and good economical efficiency.

Description

Pedestrian suspension bridge profiled steel sheet combined bridge deck system and construction method
Technical Field
The invention belongs to the technical field of pedestrian suspension bridges, and particularly relates to a profiled steel sheet combined bridge deck system of a pedestrian suspension bridge and a construction method.
Background
The pedestrian suspension bridge has high spanning capacity and good landscape experience performance, and is widely applied to bridges in mountainous areas. The suspension bridge deck system is used as a main component of a pedestrian suspension bridge, is directly contacted with pedestrians, bears the load of people, provides local rigidity, prevents the bridge deck from being deformed excessively, ensures the comfort of the pedestrians passing through the bridge, and is the key of the design of the pedestrian suspension bridge.
At present, a bridge deck system of a pedestrian suspension bridge generally adopts a form of paving steel plates, wood plates or concrete plates on lattice type section steel. The bridge deck system has the following defects:
by adopting the steel bridge deck system, the bridge deck is light in weight, so that effective gravity rigidity cannot be provided for the main cable, and the suspension bridge is high in flexibility and weak in wind resistance. The steel bridge deck is poor in pedestrian experience and walking comfort, large in overall steel consumption and poor in economical efficiency.
By adopting the wood bridge deck system, the bridge deck is light in weight, so that effective gravity rigidity cannot be provided for the main cable, and the suspension bridge is high in flexibility and weak in wind resistance. And the durability of the wood bridge deck is poor, the service life is short, and potential safety hazards exist.
The concrete slab bridge deck system is adopted, the weight of the bridge deck is large, the effective gravity rigidity of the main cable can be provided, and the integral rigidity of the suspension bridge is provided. However, the cast-in-place construction risk of the concrete support is high due to the high-altitude operation, so that the concrete bridge deck needs to be prefabricated in a factory and installed on site, and the construction is inconvenient. And the connection node of the concrete and the section steel is unfavorable in stress, poor in integrity and easy to cause late-stage diseases.
Disclosure of Invention
The invention provides a profiled steel sheet combined bridge deck system of a pedestrian suspension bridge and a construction method thereof, aiming at overcoming the defects in the prior art.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a passenger suspension bridge profiled steel sheet combined bridge deck system comprises a steel structure stiffening beam, wherein the steel structure stiffening beam is formed by combining a plurality of cross beams and two or more than two longitudinal beams which are arranged in parallel, and the cross beams and the longitudinal beams are fixedly connected to form a stiffening beam frame structure; the tops of the cross beam and the longitudinal beam are positioned on the same horizontal plane, a profiled steel sheet is laid on an exposed area defined by the cross beam and the longitudinal beam, and the edge of the profiled steel sheet is connected with the cross beam or the longitudinal beam; and a reinforced concrete bridge deck is cast on the profiled steel sheet in situ.
As a preferred scheme of the invention, welding nails are arranged on the tops of the cross beam and the longitudinal beam, and matching holes matched with the welding nails are formed at the edges of the profiled steel sheet.
In a preferred embodiment of the present invention, the end of the profiled steel sheet is provided with a plug plate.
As a preferable scheme of the invention, stressed steel bars which are longitudinally and transversely arranged are distributed in the reinforced concrete bridge deck.
As a preferable scheme of the invention, a pavement layer is laid on the top of the reinforced concrete bridge deck.
In a preferred embodiment of the present invention, a tuyere is provided outside the longitudinal beam.
As a preferable scheme of the invention, railings are arranged on two sides of the pavement layer.
A construction method of a profiled steel sheet combined bridge floor of a pedestrian suspension bridge is characterized by comprising the following steps:
step A: prefabricating a steel structure stiffening beam, processing and forming in a factory according to the required longitudinal beam and cross beam structures, applying welding nails on a top plate of the steel structure stiffening beam, and assembling the longitudinal beam and the cross beam on site to form a stiffening beam frame structure;
and B: hoisting the steel structure stiffening beam segment, namely hoisting the stiffening beam frame structure below the suspender, and connecting the suspender with the cross beam;
and C: arranging a plurality of steel structure stiffening beam sections along the length direction of the bridge body, wherein the steel structure stiffening beam sections are temporarily connected, and the full-bridge steel structure stiffening beam sections form a whole;
step D: laying a profiled steel sheet on the steel structure stiffening beam, and arranging a plug plate at the end part of the profiled steel sheet;
step E: welding nails are applied to the overlapped part of the profiled steel sheet and the steel structure stiffening beam top plate, and the welding nails penetrate through the profiled steel sheet and are welded on the steel structure stiffening beam;
step F: and paving and binding bridge deck steel bars on the profiled steel sheets, and then pouring the concrete bridge deck to form the reinforced concrete bridge deck.
In a preferred embodiment of the present invention, a tuyere is installed on an outer side of the side member.
As a preferable scheme of the invention, a pavement layer is laid on the reinforced concrete bridge deck, and railings are arranged on two sides of the pavement layer.
Compared with the prior art, the invention has the beneficial effects that:
1. the stress is safe and reliable, and the bearing capacity is high. The profiled steel sheet and the concrete bridge deck form a combined bridge deck system, bear stress together and improve the safety storage of the structure.
2. And reinforcing the structural integrity of the bridge deck. The profiled steel sheet is used as a permanent template, so that the concrete of the bridge deck can be cast in situ, and the defect of poor structural integrity of the prefabricated bridge deck is avoided.
3. The construction is convenient. The profiled steel sheet is used as a cast-in-place concrete bottom film and a working platform during construction, can replace a high-altitude support to be erected, reduces construction risks and facilitates construction.
4. The economy is good. The thickness of the profiled steel sheet is much thinner than that of the steel bridge deck slab, and the steel consumption is greatly reduced. Meanwhile, the profiled steel sheet can be used as a reinforcing steel bar in a concrete slab, so that the reinforcing steel bar amount of the concrete slab is reduced, and the construction cost is saved.
Drawings
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention at the location of the main beam;
FIG. 4 is a plan view of a stiffening beam frame structure;
reference numbers in the figures: the structure comprises longitudinal beams 101, cross beams 102, steel structure stiffening beams 103, suspension rods 104, air nozzles 105, stiffening beam frame structures 106, profiled steel plates 201, reinforced concrete bridge decks 202, welding nails 203, a pavement layer 204, railings 205 and plug boards 206.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-4, a passenger suspension bridge profiled steel sheet combined bridge deck system comprises a steel structure stiffening beam 103, wherein the steel structure stiffening beam 103 is formed by combining a plurality of cross beams 102 and two or more longitudinal beams 101 which are arranged in parallel, and a stiffening beam frame structure 106 is formed by fixedly connecting the cross beams 102 and the longitudinal beams 101; the tops of the cross beam 102 and the longitudinal beam 101 are positioned on the same horizontal plane, a profiled steel sheet 201 is laid on an exposed area defined by the cross beam 102 and the longitudinal beam 101, and the edge of the profiled steel sheet 201 is connected with the cross beam 102 or the longitudinal beam 101; the profiled steel sheet 201 is cast with a reinforced concrete bridge deck 202.
The quantity of crossbeam 102 and longeron 101 sets up according to actual need among the steel construction stiffening beam 103, crossbeam 102 and longeron 101 set up perpendicularly, longeron 101 sets up in the both ends of crossbeam 102 length direction, crossbeam 102 middle part also can carry out the setting of longeron 101 according to actual need, it sets up in the both ends of crossbeam 102 length direction to be provided with two longerons 101 at least, the quantity of crossbeam 102 can set up according to the length size of longeron 101, crossbeam 102 and longeron 101 enclose into a hollow frame type structure, crossbeam 102 and longeron 101 highly the same, when making profiled sheet 201 set up on profiled sheet 201, profiled sheet 201 keeps the horizontality setting.
The profiled steel sheet 201 is configured to form a hollow structure surrounded by the cross beam 102 and the longitudinal beam 101, preferably, the cross beam 102 and the longitudinal beam 101 form a rectangular hollow structure, and the size of the profiled steel sheet 201 is larger than that of the rectangular hollow structure surrounded by the cross beam 102 and the longitudinal beam 101, so that four sides of the profiled steel sheet 201 are located on the cross beam 102 and the longitudinal beam 101.
Be equipped with on crossbeam 102 and the longeron 101 top and weld nail 203, profiled steel sheet 201 border department is formed with the mating holes with weld nail 203 looks adaptation, and the side of profiled steel sheet 201 all is located crossbeam 102 and longeron 101, and profiled steel sheet 201 border department overlaps with crossbeam 102 and longeron 101, and weld nail 203 pierces through profiled steel sheet 201, welds on crossbeam 102 or longeron 101 to reinforced concrete and profiled steel sheet 201's being connected, better realization atress jointly.
The end portion of the profiled steel sheet 201 is provided with a plugging plate 206, the plugging plate 206 is hollow, two sides of the upper portion of the plugging plate 206 are provided with flange structures, and the plugging plate 206 is used for limiting and plugging the reinforced concrete bridge deck 202.
The reinforced concrete bridge deck 202 is made of reinforced materials, such as UHPC concrete, steel fiber concrete, ultra-tough small stone concrete and the like, and stressed steel bars which are longitudinally and transversely arranged are distributed in the reinforced concrete bridge deck 202 to reinforce the crack resistance of the concrete bridge deck.
The top of the reinforced concrete bridge deck 202 is paved with a pavement layer 204, and the pavement layer 204 is a thin layer of asphalt concrete, modified epoxy ceramsite, and the like.
The outer side of the longitudinal beam 101 is provided with the air nozzle 105 to strengthen the wind resistance of the pedestrian suspension bridge, the air nozzle 105 is formed into a specific shape by an upper and a lower reaches of a top plate, a bottom plate and a web plate, and the two sides of the pavement layer 204 are provided with the railings 205.
A construction method of a profiled steel sheet combined bridge floor of a pedestrian suspension bridge comprises the following steps:
step A: the method comprises the steps of prefabricating a steel structure stiffening beam 103, processing and forming in a factory according to the structures of a longitudinal beam 101 and a transverse beam 102, forming a basic structure of the selected longitudinal beam 101 and the transverse beam 102 by erecting reinforcement cages, assembling the reinforcement cage structures of the longitudinal beam 101 and the transverse beam 102 on site, binding the reinforcement cages of the longitudinal beam 101 and the transverse beam 102 on site and pouring concrete to form a stiffening beam frame structure 106, and applying welding nails 203 on the top plate of the steel structure stiffening beam 103 after the concrete pouring of the longitudinal beam 101 and the transverse beam 102 is completed.
The longitudinal beam 101 and the cross beam 102 form a hollow frame-shaped structure, the welding nails 203 are arranged on the top surfaces of the longitudinal beam 101 and the cross beam 102, the welding nails 203 are arranged on the inner sides, close to the hollow frame-shaped structure, of the longitudinal beam 101 and the cross beam 102, the welding nails 203 on the longitudinal beam 101 or the cross beam 102 are located on the same straight line, and the number of the welding nails 203 is set according to actual needs.
And B: and hoisting the steel structure stiffening beam 103 segment, namely hoisting a stiffening beam frame structure 106 to the lower part of the suspender 104, connecting the suspender 104 with the cross beam 102, and fixedly connecting the suspender 104 with the cross beam 102 through bolts or welding.
And C: the multiple steel structure stiffening beams 103 are arranged along the length direction of the bridge body, temporary connection is adopted between the steel structure stiffening beams 103, and the full-bridge steel structure stiffening beam 103 is integrally formed.
Step D: the method comprises the steps that a profiled steel sheet 201 is laid on a steel structure stiffening beam 103, a plug plate 206 is arranged at the end portion of the profiled steel sheet 201, matching holes matched with welding nails 203 are formed in the profiled steel sheet 201, the structure of the profiled steel sheet 201 is arranged according to a hollow structure defined by longitudinal beams 101 and cross beams 102, preferably, the hollow structure defined by the profiled steel sheet 201 and the longitudinal beams 101 and the cross beams 102 is a rectangular structure, the size of the profiled steel sheet 201 is larger than that of the hollow structure defined by the longitudinal beams 101 and the cross beams 102, two opposite ends of the profiled steel sheet 201 are respectively placed on the longitudinal beams 101 and the cross beams 102 which are arranged oppositely, the positions of the matching holes in the profiled steel sheet 201 correspond to the positions of the welding nails 203 one to one, and the welding nails 203 are fixedly connected with the profiled steel sheet 201 and also play a certain positioning role in positioning the profiled steel.
Step E: at the overlapped part of the top plate of the profiled steel sheet 201 and the steel structure stiffening beam 103, the size of the overlapped part of the top plate of the profiled steel sheet 201 and the steel structure stiffening beam 103 is set according to actual needs, and the welding nails 203 are applied and welded on the steel structure stiffening beam 103, and the welding nails 203 penetrate through the profiled steel sheet 201 to be welded on the steel structure stiffening beam 103, so that the profiled steel sheet 201 and the steel structure stiffening beam 103 are fixedly connected into an integrated structure.
Step F: and (2) paving and binding bridge deck steel bars on the profiled steel sheets 201, then pouring a concrete bridge deck to form a reinforced concrete bridge deck 202, paving layers 204 on the reinforced concrete bridge deck 202, arranging handrails 205 on two sides of the paving layers 204, and installing air nozzles 105 on the outer sides of the longitudinal beams 101.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: longitudinal beams 101, cross beams 102, steel structural stiffening beams 103, suspension rods 104, air nozzles 105, stiffening beam frame structures 106, profiled steel sheets 201, reinforced concrete bridge decks 202, welding nails 203, pavement layers 204, railings 205, blanking panels 206 and the like, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (10)

1. A passenger suspension bridge profiled steel sheet combined bridge deck system is characterized by comprising a steel structure stiffening beam (103), wherein the steel structure stiffening beam (103) is formed by combining a plurality of cross beams (102) and two or more longitudinal beams (101) which are arranged in parallel, and the cross beams (102) and the longitudinal beams (101) are fixedly connected to form a stiffening beam frame structure (106); the tops of the cross beam (102) and the longitudinal beam (101) are positioned on the same horizontal plane, a profiled steel sheet (201) is laid on an exposed area defined by the cross beam (102) and the longitudinal beam (101), and the edge of the profiled steel sheet (201) is connected with the cross beam (102) or the longitudinal beam (101); and a reinforced concrete bridge deck (202) is cast on the profiled steel sheet (201) in situ.
2. The passenger suspension bridge profiled steel sheet combined bridge deck system according to claim 1, wherein the top of the cross beam (102) and the top of the longitudinal beam (101) are provided with welding nails (203), and the edge of the profiled steel sheet (201) is provided with matching holes matched with the welding nails (203).
3. A passenger suspension bridge profiled steel sheet combined bridge deck system according to claim 2, characterized in that the end of the profiled steel sheet (201) is provided with a blanking plate (206).
4. The passenger suspension bridge profiled steel sheet composite deck system according to claim 1, characterized in that the reinforced concrete deck slab (202) is internally provided with longitudinally and transversely arranged stressed steel bars.
5. The passenger suspension bridge profiled steel sheet composite deck system according to claim 1, wherein a pavement layer (204) is laid on top of the reinforced concrete deck slab (202).
6. The passenger suspension bridge profiled steel sheet composite deck system according to claim 1, characterized in that the outer side of the longitudinal beam (101) is provided with a tuyere (105).
7. A passenger suspension bridge profiled steel sheet composite deck system according to claim 5, characterized in that the pavement layer (204) is provided with railings (205) on both sides.
8. A construction method of a profiled steel sheet combined bridge floor of a pedestrian suspension bridge is characterized by comprising the following steps:
step A: prefabricating a steel structure stiffening beam (103), processing and forming in a factory according to structures of a needed longitudinal beam (101) and a needed transverse beam (102), applying welding nails (203) on a top plate of the steel structure stiffening beam (103), and assembling the longitudinal beam (101) and the transverse beam (102) on site to form a stiffening beam frame structure (106);
and B: hoisting the steel structure stiffening beam (103) segment, hoisting a stiffening beam frame structure (106) to the position below the suspender (104), and connecting the suspender (104) with the cross beam (102);
and C: arranging a plurality of steel structure stiffening beam (103) sections along the length direction of the bridge body, wherein the steel structure stiffening beam (103) sections are temporarily connected, and the full-bridge steel structure stiffening beam (103) sections form a whole;
step D: laying a profiled steel sheet (201) on the steel structure stiffening beam (103), and arranging a plug plate (206) at the end part of the profiled steel sheet (201);
step E: welding nails (203) are applied to the overlapped part of the profiled steel sheet (201) and the top plate of the steel structure stiffening beam (103), and the welding nails (203) penetrate through the profiled steel sheet (201) and are welded on the steel structure stiffening beam (103);
step F: and paving and binding bridge deck steel bars on the profiled steel sheets (201), and then pouring the concrete bridge deck to form the reinforced concrete bridge deck (202).
9. The construction method of the profiled steel sheet combined bridge floor of the pedestrian suspension bridge, which is characterized in that air nozzles (105) are installed on the outer sides of the longitudinal beams (101).
10. The construction method of the profiled steel sheet composite bridge deck of the pedestrian suspension bridge as claimed in claim 8, wherein a pavement layer (204) is laid on the reinforced concrete bridge deck (202), and railings (205) are arranged on two sides of the pavement layer (204).
CN202010468477.8A 2020-05-28 2020-05-28 Pedestrian suspension bridge profiled steel sheet combined bridge deck system and construction method Pending CN111549664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010468477.8A CN111549664A (en) 2020-05-28 2020-05-28 Pedestrian suspension bridge profiled steel sheet combined bridge deck system and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010468477.8A CN111549664A (en) 2020-05-28 2020-05-28 Pedestrian suspension bridge profiled steel sheet combined bridge deck system and construction method

Publications (1)

Publication Number Publication Date
CN111549664A true CN111549664A (en) 2020-08-18

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ID=72001652

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010468477.8A Pending CN111549664A (en) 2020-05-28 2020-05-28 Pedestrian suspension bridge profiled steel sheet combined bridge deck system and construction method

Country Status (1)

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CN (1) CN111549664A (en)

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