CN110042739B - Integral cold-formed steel plate U type composite plate beam - Google Patents
Integral cold-formed steel plate U type composite plate beam Download PDFInfo
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- CN110042739B CN110042739B CN201910193493.8A CN201910193493A CN110042739B CN 110042739 B CN110042739 B CN 110042739B CN 201910193493 A CN201910193493 A CN 201910193493A CN 110042739 B CN110042739 B CN 110042739B
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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
- 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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/268—Composite concrete-metal
Abstract
The invention discloses an integral cold-bending steel plate U-shaped composite plate beam which comprises a plurality of cold-bending U-shaped steel plates arranged side by side, wherein a connecting plate is arranged between the edges of two adjacent cold-bending U-shaped steel plates, a plurality of steel bar holes are formed in the connecting plate, web strip holes are formed in the side wall of each cold-bending U-shaped steel plate, transverse penetrating steel bars are arranged in the web strip holes penetrating through the side walls of the plurality of cold-bending U-shaped steel plates, transverse connecting steel bars are arranged above the cold-bending U-shaped steel plates, a plurality of vertical penetrating steel bars are arranged between the transverse penetrating steel bars and the transverse connecting steel bars, and part of the vertical penetrating steel bars penetrate through the steel bar holes. Compared with the prior art, the integral cold-bending steel plate U-shaped composite plate beam is suitable for small-span bridges, and has the characteristics of convenience and fastness in construction, stability, reliability and economical manufacturing cost; in addition, the whole bridge does not need to be welded, the stress performance of the steel-concrete combination part of the combined plate girder bridge is optimized, and the safety and the durability of the steel-concrete combined plate girder are improved.
Description
Technical Field
The invention relates to an integral cold-bending steel plate U-shaped composite plate beam, in particular to a connection mode of a U-shaped rib and a concrete bridge deck, and belongs to the technical field of civil engineering.
Background
The middle and small span reinforced concrete plate girder bridges serving for years may crack under the action of long-term load under the condition that the beam bottoms are pulled, and besides, inclined cracks are easy to occur when the webs are subjected to bending and shearing actions, and the durability and the safety of the bridges are affected by the defects of the concrete plate girder bridges. In order to reduce cracking diseases of the beam bottom and the web of the reinforced concrete beam bridge, a reinforced concrete composite structure bridge can be adopted to enhance the tensile property of the beam body at the bottom and the bending shear property of the web.
The combined structure can utilize the characteristics of high strength, light weight, high compression resistance and low price of steel, and concrete, and is widely applied to bridge structures. Taking an I-shaped steel and concrete combined beam bridge as an example, the upper flange of the I-shaped steel is provided with a shear connecting piece, and a shear key is embedded into a concrete bridge deck to realize the tight connection of steel and concrete. However, the i-shaped steel is generally formed by welding steel plates, and the arrangement mode of the shear connecting pieces is generally welding connection, so that more welding seams exist, and the process is complex. The welding process may generate defects, welding residual stress is easily generated in the area near the welding, stress concentration is also easily generated at the welding joint, and the fatigue resistance of the combined beam bridge is not facilitated.
Aiming at the defects of more cracking diseases, more welding joints, complex process and the like of the traditional small and medium span reinforced concrete plate girder bridges, the invention provides an integral cold-bending steel plate U-shaped plate combined plate girder bridge which does not need to be welded so as to enhance the bending and shearing resistance of the small and medium span plate girder bridges and improve the durability and the safety of girder bodies; meanwhile, compared with a welded profile steel composite structure bridge, the steel and concrete interface connection mode and the connection process can be optimized.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an integral cold-bending steel plate U-shaped plate girder bridge without welding aiming at the defects of the prior art, so that the bending resistance and the shearing resistance of the plate girder bridge with medium and small span are enhanced, and the durability and the safety of a girder body are improved; the connection mode of steel and concrete is optimized, and the problems of welding residual stress, joint stress concentration and fatigue which possibly occur in a combined bridge are solved.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides an integral clod wash steel sheet U type composite slab roof beam, includes that a plurality of cross-sections are the clod wash U shaped steel board of U-shaped, and a plurality of clod wash U shaped steel boards set up side by side, have the connecting plate between the edge of two adjacent clod wash U shaped steel boards, a plurality of reinforcing bar holes have been seted up on the connecting plate, web strip hole has been seted up on the lateral wall of clod wash U shaped steel board, and web strip hole on running through a plurality of clod wash U shaped steel board lateral walls is provided with horizontal through reinforcement, and the top of clod wash U shaped steel board is equipped with the transverse connection reinforcing bar, be provided with a plurality of vertical through reinforcement between horizontal through reinforcement and the transverse connection reinforcing bar, the reinforcing bar hole is passed to partial vertical through reinforcement.
As a further preferable scheme, the connecting plate is further provided with a pouring strip hole, and part of the vertical through reinforcing steel bar penetrates through the pouring strip hole.
As a further preferred scheme, concrete is filled between every two adjacent cold-bent U-shaped steel plates and at the upper part of the connecting plate in the cold-bent U-shaped steel plates, and the concrete covers the transverse connecting steel bars.
The process for manufacturing the integral cold-bending steel plate U-shaped composite plate beam is characterized by comprising the following steps of:
the method comprises the following steps: firstly, manufacturing a steel plate in a factory, and forming holes at preset positions to form a pouring bar hole, a web plate bar hole and a reinforcing steel bar hole;
step two: manufacturing the steel plate with the holes into a cold-bending U-shaped steel plate through a cold-bending process;
step three: conveying the integral cold-bending U-shaped steel plate to a construction site, erecting, positioning and welding side by side, and arranging a template for pouring concrete on the U-shaped steel plate;
step four: vertically penetrating reinforcing steel bars and transversely penetrating reinforcing steel bars are installed in a penetrating mode through preset holes, and then transversely connecting reinforcing steel bars are arranged;
step five: and finally, pouring concrete from the pouring strip holes, and curing and forming.
Compared with the prior art, the integral cold-bending steel plate U-shaped composite plate beam disclosed by the invention has the advantages that the U-shaped steel plate is tightly combined with the concrete bridge deck, the whole bridge structure has no welding seam, the complex welding process and fatigue diseases possibly caused by welding are avoided, and the connection mode of the composite plate beam bridge is optimized; the integral cold-bending U-shaped steel plate is simple in process and can be prefabricated in factories; the cast-in-place concrete bridge is suitable for integral cast-in-place, the structural integrity of the bridge is good, and the construction is convenient.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
the method comprises the following steps of 1-cold bending of a U-shaped steel plate, 2-pouring of strip holes, 3-web strip holes, 4-reinforcing steel bar holes, 5-vertical penetrating reinforcing steel bars, 6-transverse penetrating reinforcing steel bars, 7-transverse connecting reinforcing steel bars and 8-concrete.
Detailed Description
In order to make the purpose and technical method of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the drawings of the embodiments of the present invention. It is to be understood that the described embodiments are embodiments of the invention, and not all embodiments. Based on the described embodiments of the invention, all other embodiments that can be performed by a person skilled in the art without inventive effort fall within the scope of the invention.
As shown in fig. 1, an integral type cold-bending steel plate U-shaped composite slab beam structurally comprises a plurality of cold-bending U-shaped steel plates 1 with U-shaped cross sections, wherein the cold-bending U-shaped steel plates 1 are arranged side by side, a connecting plate is arranged between the edges of every two adjacent cold-bending U-shaped steel plates 1, a plurality of steel bar holes 4 are formed in the connecting plate, web strip holes 3 are formed in the side walls of the cold-bending U-shaped steel plates 1, transverse penetrating steel bars 6 are arranged in the web strip holes 3 penetrating through the side walls of the cold-bending U-shaped steel plates 1, transverse connecting steel bars 7 are arranged above the cold-bending U-shaped steel plates 1, a plurality of vertical penetrating steel bars 5 are arranged between the transverse penetrating steel bars 6 and the transverse connecting steel bars 7, and part of the vertical penetrating steel bars 5 penetrate through the steel bar holes 4.
Still be provided with on the connecting plate and pour a hole 2, partial vertical through reinforcement 5 passes and pours a hole 2.
In the cold-formed U-shaped steel plates 1, concrete 8 is filled between every two adjacent cold-formed U-shaped steel plates 1 and on the upper portion of the connecting plate, and the concrete 8 covers the transverse connecting steel bars 7.
A process for manufacturing an integral cold-bending steel plate U-shaped composite plate beam comprises the following steps:
the method comprises the following steps: firstly, manufacturing a steel plate in a factory, and forming holes at preset positions to form a pouring bar hole 2, a web plate bar hole 3 and a reinforcing steel bar hole 4;
step two: manufacturing the steel plate with the holes into a cold-bending U-shaped steel plate 1 through a cold-bending process;
step three: conveying the integral cold-bent U-shaped steel plate 1 to a construction site, erecting, positioning and welding side by side, and arranging a template on the U-shaped steel plate for pouring concrete;
step four: vertical through reinforcing steel bars 5 and transverse through reinforcing steel bars 6 are installed in a penetrating mode through preset holes, and then transverse connecting reinforcing steel bars 7 are arranged;
step five: and finally, pouring concrete from the pouring strip holes 2, and curing and forming.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The utility model provides an integral cold-formed steel plate U type composite slab roof beam which characterized in that: the steel plate cold-bending device comprises a plurality of cold-bending U-shaped steel plates (1) with U-shaped sections, wherein the cold-bending U-shaped steel plates (1) are arranged side by side, a connecting plate is arranged between the edges of two adjacent cold-bending U-shaped steel plates (1), the two cold-bending U-shaped steel plates (1) are welded into a whole through the connecting plate, a plurality of steel bar holes (4) are formed in the connecting plate, web strip holes (3) are formed in the side walls of the cold-bending U-shaped steel plates (1), transverse penetrating steel bars (6) are arranged through the web strip holes (3) in the side walls of the cold-bending U-shaped steel plates (1), transverse connecting steel bars (7) are arranged above the cold-bending U-shaped steel plates (1), a plurality of vertical penetrating steel bars (5) are arranged between the transverse penetrating steel bars (6) and the transverse connecting steel bars (7), and part of the vertical penetrating steel bars (5) penetrate through the steel bar holes (4); a pouring strip hole (2) is further formed in the connecting plate, and part of the vertical through reinforcing steel bars (5) penetrate through the pouring strip hole (2); in the cold-formed U-shaped steel plates (1), concrete (8) is filled between every two adjacent cold-formed U-shaped steel plates (1) and on the upper portion of the connecting plate, and the concrete (8) covers the transverse connecting steel bars (7).
2. The process of manufacturing an integral cold-bent steel plate U-shaped composite plate beam according to claim 1, comprising the steps of: the method comprises the following steps: firstly, manufacturing a steel plate in a factory, and forming holes at preset positions to form pouring bar holes (2), web plate bar holes (3) and reinforcing steel bar holes (4);
step two: manufacturing the steel plate with the holes into a cold-bending U-shaped steel plate (1) through a cold-bending process;
step three: conveying the integral cold-bent U-shaped steel plate (1) to a construction site, erecting, positioning and welding side by side, and arranging a template for pouring concrete on the U-shaped steel plate;
step four: vertical through reinforcing steel bars (5) and transverse through reinforcing steel bars (6) are installed in a penetrating mode through preset holes, and then transverse connecting reinforcing steel bars (7) are arranged;
step five: and finally, pouring concrete (8) from the pouring strip hole (2), and curing and forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193493.8A CN110042739B (en) | 2019-03-14 | 2019-03-14 | Integral cold-formed steel plate U type composite plate beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910193493.8A CN110042739B (en) | 2019-03-14 | 2019-03-14 | Integral cold-formed steel plate U type composite plate beam |
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| CN110042739A CN110042739A (en) | 2019-07-23 |
| CN110042739B true CN110042739B (en) | 2022-02-01 |
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| CN201901841U (en) * | 2010-11-25 | 2011-07-20 | 同济大学 | Steel and concrete combined irregularly-shaped-hole rib plate connecting piece |
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| CN106149540A (en) * | 2016-07-19 | 2016-11-23 | 长安大学 | Assembling steel plate composite beam bridge and construction method thereof based on steel reinforced concrete combined bridge deck |
| CN108374328A (en) * | 2018-04-13 | 2018-08-07 | 西南交通大学 | Aluminium alloy-Combined concrete node structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6159534B2 (en) * | 2013-01-31 | 2017-07-05 | 公益財団法人鉄道総合技術研究所 | Horizontal structure |
| CN108457421B (en) * | 2017-06-05 | 2020-05-19 | 姚芳辉 | Manufacturing die and manufacturing method of assembled reinforced concrete U-shaped frame beam |
| CN108755379A (en) * | 2018-04-26 | 2018-11-06 | 上海市政交通设计研究院有限公司 | A kind of composite beam bridge and its construction method with perforated panel template |
| CN109338899B (en) * | 2018-11-30 | 2023-06-09 | 西安科技大学 | Steel-concrete composite beam without welding connector and construction method thereof |
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2019
- 2019-03-14 CN CN201910193493.8A patent/CN110042739B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201901841U (en) * | 2010-11-25 | 2011-07-20 | 同济大学 | Steel and concrete combined irregularly-shaped-hole rib plate connecting piece |
| CN102635067A (en) * | 2012-05-15 | 2012-08-15 | 江苏赛特钢结构有限公司 | Combined beam plate structure based on U-shaped channel steel |
| CN103061418A (en) * | 2013-01-14 | 2013-04-24 | 西南交通大学 | Continuous variable-stiffness shear key type steel-concrete joint section |
| KR20140125754A (en) * | 2014-09-16 | 2014-10-29 | 주식회사 동성엔지니어링 | Bridge construction method for forming continuous point part of pier using copping for connecting girder |
| CN204185761U (en) * | 2014-10-31 | 2015-03-04 | 河南大建桥梁钢构股份有限公司 | A kind of U-shaped frange plate shear connector |
| CN106149540A (en) * | 2016-07-19 | 2016-11-23 | 长安大学 | Assembling steel plate composite beam bridge and construction method thereof based on steel reinforced concrete combined bridge deck |
| CN106065563A (en) * | 2016-08-04 | 2016-11-02 | 河北省交通规划设计院 | A kind of embedded anti-shearing connection member and forming method thereof |
| CN108374328A (en) * | 2018-04-13 | 2018-08-07 | 西南交通大学 | Aluminium alloy-Combined concrete node structure |
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| CN110042739A (en) | 2019-07-23 |
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