CN112627001B - Steel plate concrete composite slab bridge - Google Patents
Steel plate concrete composite slab bridge Download PDFInfo
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- CN112627001B CN112627001B CN202110051593.4A CN202110051593A CN112627001B CN 112627001 B CN112627001 B CN 112627001B CN 202110051593 A CN202110051593 A CN 202110051593A CN 112627001 B CN112627001 B CN 112627001B
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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
- E01D1/00—Bridges in general
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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
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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
- E01D2101/30—Metal
Abstract
The invention belongs to the technical field of bridge manufacturing, and particularly relates to a steel plate concrete composite slab bridge which is suitable for a small-span bridge and is inconvenient to hoist in a large scale and cannot be constructed by a support method. The invention comprises a bottom steel plate, two transverse partition plates, a plurality of H-shaped steels, a plurality of inverted U-shaped ribs and a plurality of studs; the two diaphragm plates are welded on the top of the bottom steel plate, and the plurality of H-shaped steels are arranged in the shear-resistant area and transversely welded on the top of the bottom steel plate at equal intervals; the inverted U-shaped ribs are arranged in the middle area and are transversely welded to the top of the bottom steel plate at equal intervals; the central lines of the inverted U-shaped ribs and the H-shaped steel are positioned on the same straight line, the inner side end part of the H-shaped steel is fixedly welded with the transverse partition plate, and the two ends of the inverted U-shaped ribs are fixedly welded with the transverse partition plate. The invention improves the bearing capacity, rigidity and integral working performance of the small-span simple-supported plate bridge; the problem of the concrete cracking of the bottom of the bridge deck is solved.
Description
Technical Field
The invention belongs to the technical field of bridge manufacturing, and particularly relates to a steel plate concrete composite slab bridge which is suitable for a small-span bridge and cannot be conveniently hoisted in a large scale and cannot be constructed by a support method.
Background
The existing small-span bridge is usually a reinforced concrete cast-in-place slab bridge or a prefabricated hollow slab bridge, and when the reinforced concrete cast-in-place slab bridge is constructed, a full scaffold needs to be erected, a formwork needs to be laid, and then concrete is cast in place. The span of the prefabricated hollow slab bridge is limited, and the problem that the bottom of a concrete slab cracks under the action of long-term load cannot be solved. In addition, if site limitations are encountered, such as: in gorges, gullies and the like, when concrete precast slabs are inconvenient to hoist and cannot be constructed by adopting a bracket method, the bridge type cannot be applied, and the bridge type which is economical, reasonable and convenient to construct and adapts to the environment is urgently needed.
Disclosure of Invention
The invention provides a steel plate concrete composite slab bridge, aiming at solving the problems of cracking of concrete at the bottom of a bridge deck and inconvenience in hoisting concrete precast slabs and incapability of adopting a support method for construction.
The invention is realized by adopting the following technical scheme: a steel plate concrete composite slab bridge comprises a bottom steel plate, two transverse partition plates, a plurality of H-shaped steels, a plurality of inverted U-shaped ribs and a plurality of studs;
the length and the width of the bottom steel plate are consistent with the span and the width of the bridge;
the two diaphragm plates are arranged along the width direction of the bridge and welded on the top of the bottom steel plate, the length of each diaphragm plate is equal to the width of the bottom steel plate, the two diaphragm plates divide the bottom steel plate into three areas, and the three areas are a middle area in the middle and shear-resistant areas symmetrically arranged on two sides of the middle area;
The plurality of H-shaped steels are arranged in the shear-resistant area and welded on the top of the bottom steel plate at equal intervals along the length direction of the bridge;
the inverted U-shaped ribs are arranged in the middle area and welded to the top of the bottom steel plate at equal intervals along the length direction of the bridge;
the inverted U-shaped ribs and the H-shaped steel are arranged in a one-to-one correspondence mode, the central lines of the inverted U-shaped ribs and the H-shaped steel are located on the same straight line, the end portions of the inner sides of the H-shaped steel are fixedly welded with the transverse partition plates, the two ends of the inverted U-shaped ribs are fixedly welded with the transverse partition plates, and the height of the transverse partition plates is larger than that of the inverted U-shaped ribs, so that the transverse partition plates can seal cavities in the inverted U-shaped ribs;
the plurality of pegs are transversely and longitudinally distributed on the tops of the H-shaped steel and the inverted U-shaped ribs, and the tops of the bottom steel plates between two adjacent H-shaped steel and between two adjacent inverted U-shaped ribs.
Further, the distance between the two adjacent inverted U ribs is 200-600 mm; the distance between two adjacent H-shaped steel is 800-1600 mm.
Further, the length of the shear region is equal to 1/8 of the bridge span.
Furthermore, the bottom steel plate is made of weathering resistant steel and has a thickness of 20-35 mm.
Furthermore, the inverted U-shaped rib is made of U-shaped cold-formed steel.
Furthermore, the thickness of the transverse partition plate is 6-20 mm.
Furthermore, the welding of the H-shaped steel and the bottom steel plate adopts automatic submerged arc welding.
Further, the welding of the inverted U-shaped rib and the diaphragm plate and the welding of the H-shaped steel and the diaphragm plate adopt gas shielded welding or manual arc welding.
Compared with the prior art, the invention has the beneficial effects that:
according to the steel plate structure, the dead weight of the structure is reduced by adopting the inverted U-shaped ribs, the height of the cross section is increased, the bottom steel plate and the bottoms of the inverted U-shaped ribs are jointly pulled under the action of load, the concrete and the tops of the U-shaped ribs are jointly pressed, and the bearing capacity and the rigidity of the structure are improved;
the bottom steel plate replaces a tensile steel bar to form a two-dimensional steel bar field, can well resist the combined action of bending, shearing and twisting, better adapts to the complex working conditions of inclination, bending and steepness, can overcome the situation of bottom cracking of the traditional concrete structure, cancels steel bar binding, and reduces labor cost and time cost; in addition, the bottom steel plate can also be used as a concrete pouring template in the construction process, so that the construction and factory modularized processing are convenient, the construction quality is ensured, and the construction problems of large support requirement, inconvenience in construction and the like of the common medium-small span simple-supported slab bridge template are solved;
according to the method, the mode of combining the H-shaped steel and the concrete is adopted in the shear-resistant area, so that the shear-resistant bearing capacity near the support is greatly improved;
The stud ensures the combined action of the steel structure and the concrete, and increases the stability of the slab bridge;
in summary, the simple-support combined slab bridge with the supports and the templates is not needed, the self weight of the bridge is reduced, and the bearing capacity, the rigidity and the overall working performance of the small-span simple-support slab bridge are improved; the problem of concrete cracking at the bottom of the bridge deck is solved, and the durability is improved; the construction method has the advantages that the construction and factory modularization processing and manufacturing are facilitated, the construction period is shortened, the construction quality is guaranteed, the combination of rapid construction and good structural performance is realized, and the construction problems that the requirement for supporting a common medium-small span simple-supported slab bridge formwork is large, the construction is inconvenient and the like are solved.
Drawings
FIG. 1 is a schematic view of a horizontal plane projection of the present invention;
FIG. 2 is a view A-A of FIG. 1;
FIG. 3 is a view B-B of FIG. 1;
FIG. 4 is a view C-C of FIG. 1;
in the figure: 1-bottom steel plate, 2-diaphragm plate, 3-H section steel, 4-inverted U rib, 5-stud, 6-concrete, 7-middle area and 8-shear-resistant area.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The term "transverse" refers to the length direction of the bridge, and the term "longitudinal" refers to the width direction of the bridge.
Referring to fig. 1 to 4, the present invention provides a technical solution: a steel plate concrete composite slab bridge comprises a bottom steel plate 1, two diaphragm plates 2, a plurality of H-shaped steels 3, a plurality of inverted U-shaped ribs 4 and a plurality of studs 5;
The length and the width of the bottom steel plate 1 are consistent with the span and the width of the bridge;
the two diaphragm plates 2 are arranged along the width direction of the bridge, the two diaphragm plates 2 are welded on the top of the bottom steel plate 1, the length of each diaphragm plate 2 is equal to the width of the bottom steel plate 1, the two diaphragm plates 2 divide the bottom steel plate 1 into three areas, and the three areas are a middle area 7 positioned in the middle and shear-resistant areas 8 symmetrically arranged on two sides of the middle area 7;
the plurality of H-shaped steels 3 are arranged in the shear-resistant area 8, and the plurality of H-shaped steels 3 are welded on the top of the bottom steel plate 1 at equal intervals along the length direction of the bridge;
the inverted U-shaped ribs 4 are arranged in the middle area 7, and the inverted U-shaped ribs 4 are welded to the top of the bottom steel plate 1 at equal intervals along the length direction of the bridge;
the inverted U-shaped ribs 4 and the H-shaped steel 3 are arranged in a one-to-one correspondence mode, the central lines of the inverted U-shaped ribs and the H-shaped steel 3 are located on the same straight line, the end portions of the inner sides of the H-shaped steel 3 are fixedly welded with the transverse partition plate 2, the two ends of the inverted U-shaped ribs 4 are fixedly welded with the transverse partition plate 2, and the height of the transverse partition plate 2 is larger than that of the inverted U-shaped ribs 4, so that the transverse partition plate 2 is guaranteed to seal cavities in the inverted U-shaped ribs 4;
the studs 5 are transversely and longitudinally distributed on the tops of the H-shaped steel 3 and the inverted U-shaped ribs 4 and the tops of the bottom steel plates 1 between every two adjacent H-shaped steel 3 and between every two adjacent inverted U-shaped ribs 4, the nominal diameter of each stud 5 is 10-25mm, and the number of the studs 5 is calculated according to the shearing connection degree.
The distance between the two adjacent inverted U-shaped ribs 4 is 200-600 mm; the distance between two adjacent H-shaped steel 3 is 800-1600 mm, thereby ensuring the enough shearing resistance of the area.
The length of the shear region 8 (i.e., the length of the H-section steel 3) is equal to 1/8 of the bridge span.
And (3) pouring concrete 6 on the top of the bottom steel plate 1, wherein the thickness of the concrete 6 is 400-600mm, and the steel plate is formed by in-situ pouring.
The bottom steel plate 1 is made of weathering resistant steel (corrosion of the bottom steel plate 1 is avoided), and the thickness is 20-35 mm.
The inverted U-shaped ribs 4 are made of U-shaped cold-formed steel, and the types of the inverted U-shaped ribs 4 are selected according to the section height of the concrete 6, and can be generally made into U-3 and U-6 types.
The thickness of the diaphragm plate 2 is 6-20 mm.
And the welding of the H-shaped steel 3 and the bottom steel plate 1 adopts automatic submerged arc welding.
And the inverted U-shaped rib 4 and the diaphragm plate 2 and the H-shaped steel 3 and the diaphragm plate 2 are welded by gas shielded welding or manual arc welding.
The method enriches the types of the slab bridges in China, reduces the dead weight of the structure on the basis of ensuring the safety, enhances the construction convenience, durability and economy of the structure, and fills the gap of the steel plate concrete combined slab bridge in the research of the highway field. The method provides more flexible selection for linear arrangement of the road, particularly small-radius flat curves and inclined supporting conditions, provides solid technical support for engineering application of the road, and has important theoretical significance and practical value.
The implementation process of the invention comprises the following steps:
1. steel structure welding is completed in a factory: welding H-shaped steel 3, a diaphragm plate 2 and an inverted U-shaped rib 4 on a bottom steel plate 1, and then welding a stud 5 at the tops of the bottom steel plate 1, the H-shaped steel 3 and the inverted U-shaped rib 4 according to the construction requirements (the welded steel structure part is selected to be welded into a whole according to the width of a bridge floor and the transportation condition and then transported into a 2-3 part, and then transported to the site and welded into a whole);
2. pouring concrete: the concrete 6 is divided into one-time integral pouring or two-time respective pouring by combining the span and the height of the bridge according to the rigidity requirement in the construction process, when the two-time respective pouring is adopted, the first pouring height is 0.5 times of the thickness of the slab bridge, the surface of the slab bridge is roughened after the pouring is finished, and then the slab bridge is poured for the second time to the integral height.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a steel sheet concrete combination slab bridge which characterized in that: comprises a bottom steel plate (1), two diaphragm plates (2), a plurality of H-shaped steels (3), a plurality of inverted U-shaped ribs (4) and a plurality of studs (5);
the length and the width of the bottom steel plate (1) are consistent with the span and the width of the bridge;
the two diaphragm plates (2) are arranged along the width direction of the bridge, the two diaphragm plates (2) are welded on the top of the bottom steel plate (1), the length of each diaphragm plate (2) is equal to the width of the bottom steel plate (1), the two diaphragm plates (2) divide the bottom steel plate (1) into three areas, and the three areas are a middle area (7) positioned in the middle and shear-resistant areas (8) symmetrically arranged on two sides of the middle area (7);
the plurality of H-shaped steels (3) are arranged in the shear-resistant area (8), and the plurality of H-shaped steels (3) are welded on the top of the bottom steel plate (1) at equal intervals along the length direction of the bridge;
the inverted U-shaped ribs (4) are arranged in the middle area (7), and the inverted U-shaped ribs (4) are welded to the top of the bottom steel plate (1) at equal intervals along the length direction of the bridge;
the inverted U-shaped ribs (4) and the H-shaped steel (3) are arranged in a one-to-one correspondence mode, the central lines of the inverted U-shaped ribs and the H-shaped steel (3) are located on the same straight line, the end portion of the inner side of the H-shaped steel (3) is fixedly welded with the transverse partition plate (2), the two ends of each inverted U-shaped rib (4) are fixedly welded with the transverse partition plate (2), and the height of each transverse partition plate (2) is larger than that of each inverted U-shaped rib (4), so that the transverse partition plate (2) is guaranteed to seal a cavity inside each inverted U-shaped rib (4);
The plurality of studs (5) are transversely and longitudinally distributed at the tops of the H-shaped steel (3) and the inverted U-shaped ribs (4) and at the tops of the bottom steel plates (1) between two adjacent H-shaped steel (3) and between two adjacent inverted U-shaped ribs (4).
2. The steel plate concrete composite slab bridge of claim 1, wherein: the distance between the two adjacent inverted U ribs (4) is 200-600 mm; the distance between the two adjacent H-shaped steel (3) is 800-1600 mm.
3. A steel plate concrete composite slab bridge according to claim 1 or 2, characterized in that: the length of the shear region (8) is equal to 1/8 of the bridge span.
4. A steel plate concrete composite slab bridge according to claim 3, characterized in that: the bottom steel plate (1) is made of weathering resistant steel and has a thickness of 20-35 mm.
5. The steel plate concrete composite slab bridge of claim 4, wherein: the inverted U-shaped rib (4) is made of U-shaped cold-formed steel.
6. The steel plate concrete composite slab bridge of claim 5, wherein: the thickness of the diaphragm plate (2) is 6-20 mm.
7. The steel plate concrete composite slab bridge of claim 6, wherein: and the H-shaped steel (3) and the bottom steel plate (1) are welded by adopting automatic submerged arc welding.
8. The steel plate concrete composite slab bridge of claim 7, wherein: and the inverted U-shaped rib (4) and the diaphragm plate (2) and the H-shaped steel (3) and the diaphragm plate (2) are welded by gas shielded welding or manual arc welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110051593.4A CN112627001B (en) | 2021-01-15 | 2021-01-15 | Steel plate concrete composite slab bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110051593.4A CN112627001B (en) | 2021-01-15 | 2021-01-15 | Steel plate concrete composite slab bridge |
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| CN112627001A CN112627001A (en) | 2021-04-09 |
| CN112627001B true CN112627001B (en) | 2022-07-29 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114232477A (en) * | 2021-12-30 | 2022-03-25 | 山西省交通科技研发有限公司 | Construction method of steel plate concrete composite structure |
| CN114960422A (en) * | 2022-06-25 | 2022-08-30 | 郑州大学 | Orthotropic bridge deck |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004270270A (en) * | 2003-03-07 | 2004-09-30 | Yokogawa Bridge Corp | Steel concrete composite floor slab bridge |
| CN1594741A (en) * | 2004-06-25 | 2005-03-16 | 清华大学 | Steel plate-concrete flitch plate |
| JP2008063803A (en) * | 2006-09-07 | 2008-03-21 | Jfe Engineering Kk | Composite floor slab formed of shape steel with inner rib, composite floor slab bridge, or composite girder bridge |
| CN101413247B (en) * | 2008-12-03 | 2010-10-13 | 中交公路规划设计院有限公司 | Streamline steel-concrete folding case beam |
| CN101550676B (en) * | 2009-04-29 | 2011-01-26 | 中铁大桥勘测设计院有限公司 | High-speed railway orthotropic slab integral steel deck construction |
| CN101613990B (en) * | 2009-07-14 | 2010-09-01 | 中铁二院工程集团有限责任公司 | Construction method of railway steel truss girder T-shaped stiffening rib orthotropic slab bridge deck |
| CN105064208B (en) * | 2015-08-06 | 2016-10-05 | 福州大学 | A kind of deck structrue combined with steel bridge deck by prefabricated U HPC plate and construction method thereof |
| CN107938511A (en) * | 2017-10-18 | 2018-04-20 | 重庆大学 | A kind of orthotropic plate concrete combined bridge deck and its construction method |
| CN208995917U (en) * | 2018-10-17 | 2019-06-18 | 长沙市公路桥梁建设有限责任公司 | A kind of combined bridge deck |
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