CN113356052A - Novel steel bar truss superposed bridge deck and production method - Google Patents

Novel steel bar truss superposed bridge deck and production method Download PDF

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Publication number
CN113356052A
CN113356052A CN202110856813.0A CN202110856813A CN113356052A CN 113356052 A CN113356052 A CN 113356052A CN 202110856813 A CN202110856813 A CN 202110856813A CN 113356052 A CN113356052 A CN 113356052A
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CN
China
Prior art keywords
steel bar
steel
truss
necking
profiled
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Pending
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CN202110856813.0A
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Chinese (zh)
Inventor
宫海
储海军
柏蕾
郭建好
尹雷
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Zhiju Fabricated Green Building Innovation Center Nantong Co ltd
Nantong Assembly Building And Intelligent Structure Research Institute
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Zhiju Fabricated Green Building Innovation Center Nantong Co ltd
Nantong Assembly Building And Intelligent Structure Research Institute
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Application filed by Zhiju Fabricated Green Building Innovation Center Nantong Co ltd, Nantong Assembly Building And Intelligent Structure Research Institute filed Critical Zhiju Fabricated Green Building Innovation Center Nantong Co ltd
Priority to CN202110856813.0A priority Critical patent/CN113356052A/en
Publication of CN113356052A publication Critical patent/CN113356052A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/12Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125Grating or flooring for bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/20Concrete, stone or stone-like material
    • E01D2101/24Concrete
    • E01D2101/26Concrete reinforced
    • E01D2101/268Composite concrete-metal

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

Abstract

The invention discloses a novel steel bar truss superposed bridge deck and a production method, wherein the novel steel bar truss superposed bridge deck comprises a necking profiled steel sheet, a precast concrete layer and a steel bar truss, the precast concrete layer is poured at the bottom of the necking profiled steel sheet, the steel bar truss is welded on the necking profiled steel sheet through a lower chord steel bar, the steel bar truss comprises an upper chord steel bar, a lower chord steel bar and a truss belly support steel bar, and the truss belly support steel bar is welded on the upper chord steel bar and the lower chord steel bar to form the steel bar truss; the prefabricated steel plate can be prefabricated in a factory, is simple and convenient to process and high in processing speed, is provided with the cantilever plates on two sides, is convenient to construct, greatly reduces the time of site construction, and improves the construction efficiency; in addition, the necking-type profiled steel plates with proper heights are selected, so that the self strength of the precast concrete slab is guaranteed, the height of a stressed reinforcing steel bar compression area can be guaranteed to the maximum extent, and the bonding force between the profiled steel plates and the lower-layer concrete can be improved.

Description

Novel steel bar truss superposed bridge deck and production method
Technical Field
The invention relates to the technical field of production of laminated bridge decks, in particular to a novel steel bar truss laminated bridge deck and a production method.
Background
In the composite structure bridge, the concrete prefabricated bridge deck slab construction has two forms of cast-in-place and prefabrication. The cast-in-place prefabricated bridge deck is restrained by the steel beam due to temperature stress and drying shrinkage deformation caused by hydration heat, and is easy to damage under the action of load due to early cracks; and a large number of templates are needed for cast-in-place construction, and the field construction period is long. The prefabricated bridge deck releases the temperature stress of hydration heat and the additional stress of drying shrinkage, can reduce the using amount of templates, has short field construction period, and has good application and popularization prospects. However, the arrangement of the prefabricated bridge deck at present has certain limitations:
the traditional transverse bridge direction simply supported prefabricated bridge deck has the technical defects that the number of prefabricated bridge deck blocks is large, concrete at transverse joints is prone to cracking, the connection strength is poor, more temporary supports need to be erected during construction, the cost is increased, and the field construction period is prolonged; the traditional prefabricated bridge deck with cantilever plates is integrally prefabricated along longitudinal bridge direction segmentation and transverse bridge direction cantilever plates, and the defects of the form are that the shear force transmission between a steel beam and a prefabricated bridge deck plate is discontinuous, and the steel and concrete joint surface is easy to corrode at the position without a connecting piece and difficult to overhaul and maintain.
Disclosure of Invention
The invention aims to provide a novel steel bar truss laminated bridge deck to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a novel steel bar truss superposed bridge deck comprises a necking profiled steel plate, a concrete prefabricated layer and a steel bar truss, wherein the concrete prefabricated layer is poured at the bottom of the necking profiled steel plate, and the steel bar truss is welded on the necking profiled steel plate through a lower chord steel bar;
the steel bar truss comprises an upper chord steel bar, a lower chord steel bar and a truss abdomen supporting steel bar, the truss abdomen supporting steel bar is welded on the upper chord steel bar and the lower chord steel bar to form the steel bar truss,
the bottom end surfaces of the transverse reinforcing section steels are fixedly connected with the necking profiled steel plate through locking bolts;
the two novel steel bar truss superposed bridge decks are connected through profiled steel sheet buckles;
the novel steel bar truss superposed bridge deck is connected with the steel plate girder through the studs, and concrete is poured to form a whole.
Preferably, the necking-type profiled steel sheet is a plurality of necking-type profiled steel sheets with different sizes.
Preferably, the production method comprises the following steps:
A. firstly, welding truss abdomen supporting steel bars on upper chord steel bars and lower chord steel bars by adopting automatic welding equipment to form a steel bar truss;
B. then, welding and connecting the necking profiled steel sheet and the steel bar truss by adopting automatic welding equipment;
C. then fixedly connecting the bottom end face of the transverse reinforcing section steel with the necking profiled steel plate through a locking bolt to obtain a superposed bridge deck plate frame;
D. then, overturning the superposed bridge deck frame to pour bottom concrete, and manufacturing a concrete bottom plate;
E. finally, turning over the superposed bridge deck frame and pouring concrete on site to form a superposed bridge deck;
F. and the bottom plates of the adjacent superposed bridge floor panels are overlapped and occluded through profiled steel sheets.
G. The superposed bridge deck is connected with the steel plate girder through the studs, and concrete is poured to form a whole.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention has simple structure, reasonable design, lower input construction cost and low manufacturing cost; the prefabricated steel plate can be prefabricated in a factory, is simple and convenient to machine, is high in machining speed, is provided with the cantilever plates on two sides, is convenient to construct, greatly reduces the site construction time, and improves the construction efficiency.
(2) The invention adopts the necking profiled steel sheet, improves the binding force between the profiled steel sheet and the lower layer concrete, and reduces the thickness of the prefabricated layer.
(3) The invention is combined with a proper steel bar truss, the strength of upper and lower chord bars of the steel bar truss is fully utilized, transverse steel bars are paved on site, and the reinforcement of the bidirectional plate is easily realized.
(4) According to the invention, the concrete below the necking profiled steel sheet can be used as a protective layer for the lower chord steel bar and the profiled steel sheet, the effect of the profiled steel sheet is effectively utilized, the strength and rigidity of the prefabricated part are enhanced, and the problems of beauty, fireproof spraying and anticorrosion maintenance are not required to be considered.
(5) And the adjacent steel bar truss superposed bridge decks are overlapped and occluded through profiled steel sheets, so that the method is simple and applicable, and the working time of the floor is greatly saved. The two bridge decks can be well and tightly connected together, and the problem of slurry leakage during concrete site pouring is effectively avoided.
(6) According to the invention, the galvanized steel plate below the steel bar truss floor support plate is changed into the necking profiled steel plate, so that the binding force between the upper concrete layer and the lower concrete layer of the profiled steel plate is improved.
(7) The invention can give full play to the strength and rigidity of the steel bar truss and the profiled steel sheet, can meet the requirement of vertical support-free within a certain span range, and has larger span and wider application range of vertical support-free after forming the continuous plate.
(8) The invention is provided with the transverse profile steel to strengthen the transverse rigidity and adjust the rigidity in all directions.
(9) The invention has wider application range, can be used for steel structure bridges and concrete bridges, and can be matched with prefabricated assembled concrete members for use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural view of a bottom profiled steel sheet of a laminated bridge deck according to the present invention;
FIG. 3 is a view of the overlapping buckle structure of the bottom profiled steel sheet of the composite bridge deck;
FIG. 4 is a cross-sectional view of the laminated bridge deck of the present invention;
FIG. 5 is a top view of the laminated bridge deck of the present invention;
FIG. 6 is a front view of a laminated bridge deck of the present invention;
FIG. 7 is a schematic plan view of a configuration of an embodiment of the present invention;
in the figure: the steel plate comprises a necking-type compression steel plate 1, a lower chord steel bar 2, an upper chord steel bar 3, a truss abdomen supporting steel bar 4, a transverse reinforcing steel bar 5, a concrete bottom plate 6 and upper concrete 7.
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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, the present invention provides a technical solution: a novel steel bar truss superposed bridge deck comprises a necking profiled steel plate 1, a concrete prefabricated layer 6 and a steel bar truss, wherein the concrete prefabricated layer 6 is poured at the bottom of the necking profiled steel plate, and the steel bar truss is welded on the necking profiled steel plate 1 through a lower chord steel bar 2;
the steel bar truss comprises an upper chord steel bar 3, a lower chord steel bar 2 and a truss abdomen supporting steel bar 4, the truss abdomen supporting steel bar 4 is welded on the upper chord steel bar 3 and the lower chord steel bar 2 to form the steel bar truss,
the bottom end face of the plurality of transverse reinforcing section steels 5 is fixedly connected with the necking profiled steel plate 1 through locking bolts;
the two novel steel bar truss superposed bridge decks are connected through profiled steel sheet buckles;
the necking profiled steel sheet 1 is a plurality of necking profiled steel sheets 1 with different sizes; the necking-type profiled steel sheet 1 may be selected from various sizes of necking-type profiled steel sheets 1 according to the use
A production method of a novel steel bar truss composite bridge deck comprises the following steps:
A. firstly, welding truss abdomen supporting steel bars on upper chord steel bars and lower chord steel bars by adopting automatic welding equipment to form a steel bar truss;
B. then, welding and connecting the necking profiled steel sheet and the steel bar truss by adopting automatic welding equipment;
C. then fixedly connecting the bottom end face of the transverse reinforcing section steel with the necking profiled steel plate through a locking bolt to obtain a superposed bridge deck plate frame;
D. then, overturning the superposed bridge deck frame to pour bottom concrete, and manufacturing a concrete bottom plate;
E. finally, turning over the superposed bridge deck frame and pouring concrete on site to form a superposed bridge deck;
F. and the bottom plates of the adjacent superposed bridge floor panels are overlapped and occluded through profiled steel sheets.
G. The superposed bridge deck is connected with the steel plate girder through the studs, and concrete is poured to form a whole.
In summary, compared with the prior art, the invention has the beneficial effects that:
(1) the invention has simple structure, reasonable design, lower input construction cost and low manufacturing cost; the prefabricated steel plate can be prefabricated in a factory, is simple and convenient to machine, is high in machining speed, is provided with the cantilever plates on two sides, is convenient to construct, greatly reduces the site construction time, and improves the construction efficiency.
(2) The invention adopts the necking profiled steel sheet, improves the binding force between the profiled steel sheet and the lower layer concrete, and reduces the thickness of the prefabricated layer.
(3) The invention is combined with a proper steel bar truss, the strength of upper and lower chord bars of the steel bar truss is fully utilized, transverse steel bars are paved on site, and the reinforcement of the bidirectional plate is easily realized.
(4) According to the invention, the concrete below the necking profiled steel sheet can be used as a protective layer for the lower chord steel bar and the profiled steel sheet, the effect of the profiled steel sheet is effectively utilized, the strength and rigidity of the prefabricated part are enhanced, and the problems of beauty, fireproof spraying and anticorrosion maintenance are not required to be considered.
(5) And the adjacent steel bar truss superposed bridge decks are overlapped and occluded through profiled steel sheets, so that the method is simple and applicable, and the working time of the floor is greatly saved. The two bridge decks can be well and tightly connected together, and the problem of slurry leakage during concrete site pouring is effectively avoided.
(6) According to the invention, the galvanized steel plate below the steel bar truss floor support plate is changed into the necking profiled steel plate, so that the binding force between the upper concrete layer and the lower concrete layer of the profiled steel plate is improved.
(7) The invention can give full play to the strength and rigidity of the steel bar truss and the profiled steel sheet, can meet the requirement of vertical support-free within a certain span range, and has larger span and wider application range of vertical support-free after forming the continuous plate.
(8) The invention is provided with the transverse profile steel to strengthen the transverse rigidity and adjust the rigidity in all directions.
(9) The invention has wider application range, can be used for steel structure bridges and concrete bridges, and can be matched with prefabricated assembled concrete members for use.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (3)

1. The utility model provides a novel steel bar truss coincide decking, includes throat type profiled steel sheet (1), precast concrete layer (6) and steel bar truss, its characterized in that: the concrete prefabricated layer (6) is poured at the bottom of the necking profiled steel sheet, and the steel bar truss is welded on the necking profiled steel sheet (1) through the lower chord steel bar (2);
the steel bar truss comprises an upper chord steel bar (3), a lower chord steel bar (2) and truss abdomen supporting steel bars (4), the truss abdomen supporting steel bars (4) are welded on the upper chord steel bar (3) and the lower chord steel bar (2) to form the steel bar truss,
the bottom end surfaces of the transverse reinforcing section steels (5) are fixedly connected with the necking profiled steel plate (1) through locking bolts;
the two novel steel bar truss superposed bridge decks are connected through profiled steel sheet buckles;
the novel steel bar truss superposed bridge deck is connected with the steel plate girder through the studs, and concrete is poured to form a whole.
2. The novel steel bar truss composite bridge deck as claimed in claim 1, wherein: the necking-type profiled steel plates (1) are necking-type profiled steel plates (1) with different sizes.
3. The production method for realizing the novel steel bar truss laminated bridge deck slab of claim 1 is characterized by comprising the following steps of: the production method comprises the following steps:
A. firstly, welding truss abdomen supporting steel bars on upper chord steel bars and lower chord steel bars by adopting automatic welding equipment to form a steel bar truss;
B. then, welding and connecting the necking profiled steel sheet and the steel bar truss by adopting automatic welding equipment;
C. then fixedly connecting the bottom end face of the transverse reinforcing section steel with the necking profiled steel plate through a locking bolt to obtain a superposed bridge deck plate frame;
D. then, overturning the superposed bridge deck frame to pour bottom concrete, and manufacturing a concrete bottom plate;
E. finally, turning over the superposed bridge deck frame and pouring concrete on site to form a superposed bridge deck;
F. the bottom plates of the adjacent superposed bridge floor panels are overlapped and occluded through profiled steel sheets;
G. the superposed bridge deck is connected with the steel plate girder through the studs, and concrete is poured to form a whole.
CN202110856813.0A 2021-07-28 2021-07-28 Novel steel bar truss superposed bridge deck and production method Pending CN113356052A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114215251A (en) * 2022-01-28 2022-03-22 中国建筑西南设计研究院有限公司 Steel grid sprayed concrete combined dome structure and construction method thereof
CN114875785A (en) * 2022-04-13 2022-08-09 湖南省交通规划勘察设计院有限公司 UHPC prefabricated bridge deck unit without temporary support, bridge deck and construction method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877582A (en) * 2012-10-16 2013-01-16 北京工业大学 Composite floor with steel bar trusses, profiled steel plate and regenerated concrete, and manufacturing method for composite floor
CN110206210A (en) * 2019-06-13 2019-09-06 石家庄铁道大学 Assembled composite floor plate and its construction method
CN110258884A (en) * 2019-06-12 2019-09-20 湖南固可得建筑科技有限公司 A kind of fire prevention combination floor support plate
CN214884748U (en) * 2021-05-12 2021-11-26 多维联合集团有限公司 Injection molding type steel bar truss assembly and steel bar truss floor bearing plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877582A (en) * 2012-10-16 2013-01-16 北京工业大学 Composite floor with steel bar trusses, profiled steel plate and regenerated concrete, and manufacturing method for composite floor
CN110258884A (en) * 2019-06-12 2019-09-20 湖南固可得建筑科技有限公司 A kind of fire prevention combination floor support plate
CN110206210A (en) * 2019-06-13 2019-09-06 石家庄铁道大学 Assembled composite floor plate and its construction method
CN214884748U (en) * 2021-05-12 2021-11-26 多维联合集团有限公司 Injection molding type steel bar truss assembly and steel bar truss floor bearing plate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114215251A (en) * 2022-01-28 2022-03-22 中国建筑西南设计研究院有限公司 Steel grid sprayed concrete combined dome structure and construction method thereof
CN114875785A (en) * 2022-04-13 2022-08-09 湖南省交通规划勘察设计院有限公司 UHPC prefabricated bridge deck unit without temporary support, bridge deck and construction method thereof

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Application publication date: 20210907

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