CN211228115U - Upper and lower steel plate sandwich type steel-concrete combined bridge deck structure - Google Patents
Upper and lower steel plate sandwich type steel-concrete combined bridge deck structure Download PDFInfo
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- CN211228115U CN211228115U CN201921446301.1U CN201921446301U CN211228115U CN 211228115 U CN211228115 U CN 211228115U CN 201921446301 U CN201921446301 U CN 201921446301U CN 211228115 U CN211228115 U CN 211228115U
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Abstract
The utility model discloses an upper and lower steel plate sandwich type steel-concrete combined bridge deck structure, which comprises a top steel plate (1) and a bottom steel plate (2), wherein the bottom steel plate (2) is fixedly connected with a girder (3) below the bottom steel plate; and a plurality of webs (4) are arranged between the top steel plate (1) and the bottom steel plate (2) in the transverse bridge direction, each adjacent web (4) enables a plurality of cavities to be formed inside the top steel plate (1) and the bottom steel plate (2), and high-fluidity concrete (6) is poured inside each cavity to form an upper steel plate and a lower steel plate sandwich type combined bridge deck structure. The utility model discloses a sandwich type steel-concrete combination bridge floor plate structure has both solved the tired problem of orthotropic steel decking, has solved the durability problem and the great problem of dead weight that the hogging moment district of concrete decking ftractures again.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering, more specifically relates to an upper and lower steel sheet sandwich type steel-concrete combination bridge floor structure.
Background
The bridge deck structure is the key part of bridge design, and the decking directly bears the vehicle load effect to transmit the load that bears for the girder. For large-span steel bridges, there are currently mainly concrete bridge deck structures in the form of orthogonal iso-steel deck slabs and composite beams.
The orthogonal different steel bridge deck is a bridge deck structure which is loaded by longitudinal and transverse stiffening ribs and a cover plate together, the bridge deck has a plurality of welding seams and a complex structure, and the bridge deck not only directly bears the load of wheels, but also jointly works with a main beam and is complex in stress. The bridge deck has the advantages of light dead weight, strong spanning capability, wide application range and the like, but the bridge deck has small local rigidity, prominent fatigue problem and bridge deck pavement problem and large later-period maintenance workload. Steel structure fatigue refers to a failure phenomenon that occurs when the stress of steel is lower than the ultimate strength under the action of repeated loads. In recent years, bridges adopting orthogonal different steel bridge decks in China have more problems due to reasons such as overload, maintenance conditions and the like.
The combined beam type concrete bridge deck is a pure concrete bridge deck, the rigidity of the bridge deck is high, the driving condition is good, but when the combined beam type concrete bridge deck is applied to structures such as a continuous beam bridge, the tensile stress of a concrete slab in a hogging moment area of a middle fulcrum area is high, and the problems of cracking and durability of the concrete slab exist.
For large-span steel bridges and steel-concrete composite structure bridges, a novel bridge deck structure is needed to overcome the fatigue problem of orthotropic steel bridge deck slabs and the durability problem of the hogging moment area of concrete bridge deck slabs.
SUMMERY OF THE UTILITY MODEL
To the above defect or improvement demand of prior art, the utility model provides an upper and lower steel sheet sandwich formula steel-concrete combination bridge floor plate structure has both solved the fatigue problem of orthotropic steel decking, has solved the durability problem and the great problem of dead weight of the hogging moment district fracture of concrete decking again.
In order to achieve the aim, the upper and lower steel plate sandwich type steel-concrete combined bridge deck structure comprises a top steel plate and a bottom steel plate arranged below the top steel plate, wherein the bottom steel plate is fixedly connected with a main beam below the bottom steel plate; and the number of the first and second electrodes,
a plurality of webs are arranged between the top steel plate and the bottom steel plate in the transverse bridge direction, each web is adjacent to enable the top steel plate and the bottom steel plate to form a plurality of cavities inside, and high-fluidity concrete is poured into the cavities to form an upper steel plate and a lower steel plate sandwich type combined bridge deck structure.
Furthermore, on the bottom steel plate, a bottom steel plate connecting stiffening rib is arranged on the transverse bridge, the bottom steel plate connecting stiffening rib bottom is fixedly connected with the bottom steel plate, and a gap is arranged between the top of the bottom steel plate and the top steel plate.
Furthermore, a girder connecting plate is arranged on the girder top plate, and the girder connecting plate and the bottom steel plate connecting stiffening rib are fixed through a connecting component.
Further, the connecting members comprise first members and second members perpendicular to the first members, and the number of the second members is consistent with that of the main beam connecting plates.
Furthermore, a plurality of bolt holes are formed in the first component and correspond to the bolt holes formed in the bottom steel plate connecting stiffening rib, and a plurality of bolt holes are also formed in the second component and correspond to the bolt holes formed in the main beam connecting plate.
Furthermore, according to the condition of bridge deck blocking, at least one connecting component is arranged on one bridge deck, and the other connecting parts of the main beam and the bottom steel plate are connected by shear nails.
And further, rubber base plates are correspondingly arranged between the top plate flanges of the main beams and the bottom steel plates.
Furthermore, the bottom steel plate is provided with openings at corresponding positions of the main beam connecting plate and the shear nails, the size of each opening is determined according to the size of the main beam top plate, and the openings are arranged at corresponding positions of the rest of the main beam top plates except for the size of the rubber base plate.
Further, each cavity is provided with a filling hole and an exhaust hole, wherein the filling hole is arranged on the lower side of the top steel plate in the transverse direction, and the exhaust hole is arranged on the higher side of the top steel plate in the transverse direction.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
(1) the utility model discloses an upper and lower steel sheet sandwich type steel-concrete combination bridge floor structure adopts upper and lower steel sheet, and the middle combination bridge floor structure who pours high fluidity concrete has great rigidity, lighter dead weight, and the durability is good. The fatigue problem of the orthogonal dissimilar steel bridge deck is solved; the steel plate has high tensile strength, and solves the problems of durability of cracking in the hogging moment area of the concrete bridge deck and high self weight.
(2) The utility model discloses an upper and lower steel sheet sandwich formula steel-concrete combination bridge floor structure through setting up connecting elements 7, can realize the pre-fixing of above-mentioned overall structure and girder, facilitates for processes such as follow-up setting top steel sheet, shear force nail and concreting.
(3) The sandwich type steel-concrete combined bridge deck structure with the upper and lower steel plates has better performance in both positive and negative bending moment areas, and the bottom steel plate in the positive bending moment area is pulled, and the top steel plate and the concrete are pressed; the top steel plate in the hogging moment area is under tension, and the bottom steel plate and the concrete are under compression.
(4) The utility model discloses an upper and lower steel sheet sandwich type steel-concrete combination bridge floor plate structure, combination bridge deck plate rigidity is big, and the driving condition is good, uses all to have good local rigidity performance at railway and highway.
Drawings
FIG. 1 is a schematic view of a sandwich type steel-concrete composite bridge deck structure with upper and lower steel plates according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connection between the upper and lower steel plate sandwich type steel-concrete composite bridge deck structure and the main beam according to the embodiment of the present invention;
fig. 3 is a schematic view illustrating a connection between the deck plate structure and the main beam in fig. 2 according to the embodiment of the present invention;
fig. 4 is a concrete grouting schematic diagram of the upper and lower steel plate sandwich type steel-concrete combined bridge deck structure according to the embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular: 1-top steel plate, 2-bottom steel plate, 3-main beam, 4-web plate, 5-bottom steel plate connecting stiffening rib, 6-high fluidity concrete, 7-connecting member, 8-main beam connecting plate, 9-rubber backing plate, 10-grouting hole and 11-exhaust hole;
701-first member, 702-second member.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Fig. 1 is the embodiment of the utility model provides an upper and lower steel plate sandwich type steel-concrete combination bridge deck plate structure schematic diagram, as shown in fig. 1, the utility model provides an upper and lower steel plate sandwich type steel-concrete combination bridge deck plate structure, including top steel sheet 1 and end steel sheet 2, wherein end steel sheet 2 and girder 3 fixed connection. A plurality of webs 4 are arranged between the top steel plate 1 and the bottom steel plate 2 in the transverse bridge direction, a plurality of cavities are formed between the top steel plate 1 and the bottom steel plate 2 between two adjacent webs 4, high-fluidity concrete 6 is poured into the cavities, and an upper steel plate sandwich type combined bridge deck structure is formed. The sandwich concrete composite structure of the upper steel plate and the lower steel plate has better performance in both positive and negative bending moment areas, and the bottom steel plate is under tension in the positive bending moment area, and the top steel plate and the concrete are under compression; the top steel plate in the hogging moment area is under tension, and the bottom steel plate and the concrete are under compression.
Specifically, fig. 2 is a schematic diagram of the connection between the upper and lower steel plate sandwich type steel-concrete composite bridge deck structure and the main beam according to the embodiment of the present invention, and referring to fig. 1 and 2, in the cavity formed between the webs 4, the bottom steel plate connecting stiffening ribs 5 are arranged in the transverse direction of the bridge, the bottom of the bottom steel plate connecting stiffening ribs 5 is welded on the bottom steel plate 2, and the top thereof is spaced from the top steel plate 1 by a certain distance; the top plate of the main beam 3 is provided with a plurality of main beam connecting plates 8 vertical to the main beam connecting plates, the main beam connecting plates 8 are vertical to the bottom steel plate connecting stiffening ribs 5, the bottom steel plate 2 is provided with an opening at the corresponding position of the main beam connecting plates, the top of the main beam connecting plates 8 penetrates through the opening, and the main beam connecting plates are fixedly connected with the bottom steel plate connecting stiffening ribs 5 through connecting members 7. The bottom steel plate 2, the web plate 4 and the bottom steel plate connecting stiffening rib 5 are of an integral structure processed before leaving factory. The utility model discloses an upper and lower steel sheet sandwich formula steel-concrete combination bridge floor structure through setting up connecting elements 7, can realize the above-mentioned overall structure and girder 2 fixed in advance, facilitates for processes such as follow-up setting top steel sheet, shear force nail and concreting.
Preferably, rubber tie plates 9 are correspondingly arranged between the top plate flanges of the main beams 3 and the bottom steel plate 2. Preferably, the size of the opening of the bottom steel plate 2 is determined according to the size of the top plate of the main beam 3, except the size of the rest of the top plate with the rubber base plate 9, the rest of the openings are corresponding to the top plate of the main beam 3, but a certain distance is reserved between the longitudinal bridge direction and the web plate 4. The opening corresponds with the girder roof, is favorable to the concrete of decking mud jacking to be connected with the girder roof more.
According to the condition of bridge deck blocking, at least one connecting component 7 is arranged on one bridge deck, and the other main beams 3 and the bottom steel plate 2 are connected by shear nails which are stressed. And similarly, the shear nails are arranged, the size of the opening of the bottom steel plate 2 is determined according to the size of the top plate of the main beam 3, and except the size of the rest of the top plate of the main beam 3 with the rubber cushion plate 9, the rest of the openings correspond to the openings of the top plate of the main beam 3, but a certain distance is reserved between the longitudinal bridge direction and the web plate 4.
In addition, as shown in fig. 2, two adjacent bottom steel plate connecting stiffeners 5 are connected by a plurality of bolts for connecting two adjacent bottom steel plates 2 in the bridge direction. The connecting member 7 is staggered with one of the bottom steel plate connecting stiffening ribs 5 and fixedly connected with the other bottom steel plate connecting stiffening rib 5.
Fig. 3 is a schematic view of the connection between the deck plate structure and the main beam in fig. 2 according to the embodiment of the present invention, with reference to fig. 2 and 3, the connection member 7 includes a first member 701 and a second member 702, the first member 701 and the second member 702 are vertically disposed therebetween, and both are perpendicular to the top steel plate 1 and the bottom steel plate 2. The number of the second members 702 corresponds to the number of the main beam connection plates 8. The first member 701 is provided with a plurality of bolt holes corresponding to the bolt holes arranged on the bottom steel plate connecting stiffening rib 5, and the first member 701 and the bottom steel plate connecting stiffening rib 5 are fixedly connected through bolts arranged corresponding to the bolt holes; the second member 702 is also provided with a plurality of bolt holes corresponding to the bolt holes arranged on the main beam connecting plate 8, and the second member 702 and the main beam connecting plate 8 are fixedly connected through bolts arranged on the bolt holes corresponding to the bolt holes.
For the simplification and convenient construction of the utility model, the bottom steel plate is connected with the girder by adopting a connecting component, the upper flange of the girder is provided with a rubber pad, and the bottom steel plate is put on the rubber pad; and a web plate is welded on the bottom steel plate, the web plate adopts a T-shaped cross section, after the bridge deck steel structure is connected with the girder top plate in place, a top steel plate is welded, and the top steel plate is welded on the flange of the T-shaped cross section of the web plate.
Preferably, the bolt holes corresponding to the first member 701 and the bottom steel plate connecting stiffening rib 5 and the bolt holes corresponding to the second member 702 and the main beam connecting plate 8 are perpendicular to each other, which is beneficial to the stability of mutual connection and the convenience of construction.
Preferably, the height of the second member 702 is less than or equal to the height of the main beam connection plate 8.
Preferably, the length of the bottom steel plate connecting stiffening ribs 5 is consistent with the width of the bridge floor, and the length of the web plate 4 is consistent with the width of the bridge floor, so that the upper steel plate and the lower steel plate can be better supported, and the whole stress is more stable.
Further, fig. 4 is the embodiment of the utility model provides an upper and lower steel sheet sandwich formula steel-concrete combination bridge floor slab structure concrete slip casting schematic diagram, combine fig. 1 and fig. 4, in every filled cavity, horizontal one end is equipped with filling hole 10 on the top steel sheet 1 for pour into high fluidity concrete 6, the other end is equipped with exhaust hole 11, is used for pouring the exhaust of 6 in-process of high fluidity concrete. The horizontal both sides of bridge floor are the domatic design that one side is higher than the opposite side, are favorable to the drainage of bridge floor. And the filling hole 10 is set up in the one side that the top steel plate 1 is horizontal lower, correspondingly, the exhaust hole 11 sets up in the one side that the top steel plate 1 is horizontal higher, pours high fluidity concrete 6 when pouring into, pours from low to high, because the pressure when upwards pouring into, can extrude the inside air of high fluidity concrete 6 to make gas discharge from exhaust hole 11, more closely knit and even when can making the concrete among the upper and lower steel plate pour into, make overall structure more stable.
The utility model discloses an upper and lower steel sheet sandwich type steel-concrete combination bridge floor structure adopts upper and lower steel sheet, and the middle combination bridge floor structure who pours high fluidity concrete has great rigidity, lighter dead weight, and the durability is good. The problems of fatigue of the steel bridge deck slab, high tensile strength of the steel plate, durability of cracking of the hogging moment area of the concrete bridge deck slab and high self weight are solved.
In a word, compared with the prior art, the sandwich type steel-concrete combined bridge deck structure of the upper and lower steel plates has the advantages that the rigidity of the combined plate is high, the fatigue performance is good, the driving condition is good, and the span of the distance between the main beams can be increased; the durability is good, after the upper steel plate and the lower steel plate are combined with the concrete, the cracking problem of the concrete is solved, the fatigue problem of a steel structure is also solved, and the durability is good; the comprehensive economy is good; the combined bridge deck plate has high rigidity and bearing capacity, can reduce the thickness and weight of the bridge deck plate, increase the distance between the longitudinal beams or the transverse beams of the main beam and obtain better economic benefit; the combined bridge deck has high rigidity and good driving conditions, and has good local rigidity performance when applied to railways and highways;
the utility model discloses a construction method of upper and lower steel sheet sandwich type steel-concrete combination bridge floor plate structure, including following step:
s1: the bottom steel plate 2, the web plate 4 and the bottom steel plate connecting stiffening rib 5 are processed into a whole, and a groove is formed in the range of the bottom steel plate 2 corresponding to the top plate of the main beam 3 for a shear nail and a Pi-shaped connecting component on the main beam to pass through;
s2: a rubber base plate 9 is arranged in the contact range of the top plate of the main beam 3 and the bottom steel plate 2;
s3: after the integral member of the bottom steel plate 2, the web plate 4 and the bottom steel plate connecting stiffening rib 5 is transported to the site, the integral member is hoisted in place and is connected with the top plate of the main beam 3 through a connecting member 7;
s4: after the connecting members 7 are connected, welding the partitioned top steel plates 1, welding the top steel plates 1 on the flange of the T-shaped section of the web plate 4, and sealing the connecting parts;
s5: pouring high-fluidity concrete, comprising the following steps:
s51: installing a grouting hole 10 and a discharge hole 11;
s52: wetting the inner cavity of the grouting hole 10 by water; pouring high-fluidity concrete 6 to form an upper and lower steel plate sandwich type steel-concrete combined bridge deck structure
S53: pouring from the grouting holes 10 by adopting a high-pressure grouting method;
s54: and after the pouring is ensured to be compact, the grouting holes 10 and the discharge holes 11 are removed.
The utility model discloses a construction method of upper and lower steel sheet sandwich type steel-concrete combination bridge floor plate structure, the steel construction adopts mill's prefabrication, and the on-the-spot erection joint.
The utility model discloses a construction method of upper and lower steel sheet sandwich formula steel-concrete combination decking, steel sheet and web, end steel sheet connection stiffening rib are processed into wholly before dispatching from the factory, and the installation of piecemeal is installed again, and the top steel sheet of installing to adopt high-pressure mud jacking to fill to the eminence from domatic structure's low department, can guarantee that middle concrete layer's even bubble-free, construction convenience is swift, directly pours the concrete behind the steel construction connection, and decking construction need not formwork support, construction convenience, quick.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (9)
1. An upper steel plate and a lower steel plate sandwich type steel-concrete combined bridge deck plate structure is characterized by comprising a top steel plate (1) and a bottom steel plate (2) arranged below the top steel plate, wherein the bottom steel plate (2) is fixedly connected with a main beam (3) below the bottom steel plate; and the number of the first and second electrodes,
the top steel plate (1) with horizontal bridge is to being equipped with a plurality of webs (4) between the end steel sheet (2), and every is adjacent web (4) make top steel plate (1) with end steel sheet (2) are inside to form a plurality of cavities, each the cavity is inside to be used for pouring into high fluidity concrete (6), forms steel sheet sandwich formula combination bridge floor structure from top to bottom.
2. The upper and lower steel plate sandwich type steel-concrete composite bridge deck structure according to claim 1, wherein, the bottom steel plate (2) is provided with bottom steel plate connecting stiffening ribs (5) in the transverse direction, the bottom of the bottom steel plate connecting stiffening ribs (5) is fixedly connected with the bottom steel plate (2), and the top of the bottom steel plate connecting stiffening ribs is spaced from the top steel plate (1).
3. The upper and lower steel plate sandwich type steel-concrete composite bridge deck structure according to claim 2, wherein a girder connecting plate (8) is arranged on a top plate of the girder (3), and the girder connecting plate (8) and the bottom steel plate connecting stiffening rib (5) are fixed through a connecting member (7).
4. An upper and lower steel plate sandwich steel-concrete composite deck structure according to claim 3, wherein said connecting members (7) comprise first members (701) and second members (702) perpendicular thereto, the number of said second members (702) corresponding to the number of said main beam webs (8).
5. The upper and lower steel plate sandwich type steel-concrete composite bridge deck structure according to claim 4, wherein said first member (701) is provided with a plurality of bolt holes corresponding to the bolt holes provided on said bottom steel plate connecting stiffening ribs (5), and said second member (702) is also provided with a plurality of bolt holes corresponding to the bolt holes provided on said main beam connecting plate (8).
6. A steel-concrete composite deck slab structure with sandwich type upper and lower steel plates according to any one of claims 3 to 5, wherein one deck slab is provided with at least one connecting member (7) according to the condition of deck blocking, and the other joints of the main beam (3) and the bottom steel plate (2) are connected by shear nails.
7. The upper and lower steel plate sandwich type steel-concrete composite bridge deck structure according to claim 6, wherein rubber tie plates (9) are correspondingly arranged between the top plate flanges of the main beams (3) and the bottom steel plates (2).
8. The upper and lower steel plate sandwich type steel-concrete combined bridge deck structure according to claim 7, wherein the bottom steel plate (2) is provided with openings at corresponding positions of the main beam connecting plate (8) and the shear nails, the size of each opening is determined according to the size of the top plate of the main beam (3), and the openings are arranged at corresponding positions of the top plate of the main beam (3) except the size of the top plate of the main beam (3) on which the rubber base plate (9) is placed.
9. An upper and lower steel plate sandwich type steel-concrete composite bridge deck structure according to any one of claims 1 to 5, wherein each chamber is provided with an injection hole (10) and an exhaust hole (11), wherein the injection hole (10) is provided on the lower side of the top steel plate (1), and the exhaust hole (11) is provided on the upper side of the top steel plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921446301.1U CN211228115U (en) | 2019-09-02 | 2019-09-02 | Upper and lower steel plate sandwich type steel-concrete combined bridge deck structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921446301.1U CN211228115U (en) | 2019-09-02 | 2019-09-02 | Upper and lower steel plate sandwich type steel-concrete combined bridge deck structure |
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| Publication Number | Publication Date |
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| CN211228115U true CN211228115U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921446301.1U Active CN211228115U (en) | 2019-09-02 | 2019-09-02 | Upper and lower steel plate sandwich type steel-concrete combined bridge deck structure |
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| CN (1) | CN211228115U (en) |
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- 2019-09-02 CN CN201921446301.1U patent/CN211228115U/en active Active
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