CN114000425A - Prefabricated bridge deck structure of steel-concrete composite beam and construction method thereof - Google Patents
Prefabricated bridge deck structure of steel-concrete composite beam and construction method thereof Download PDFInfo
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- CN114000425A CN114000425A CN202111473653.8A CN202111473653A CN114000425A CN 114000425 A CN114000425 A CN 114000425A CN 202111473653 A CN202111473653 A CN 202111473653A CN 114000425 A CN114000425 A CN 114000425A
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- 238000010276 construction Methods 0.000 title claims abstract description 32
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 141
- 239000010959 steel Substances 0.000 claims abstract description 141
- 238000003466 welding Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/067—Flat continuous joints cast in situ
-
- 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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Abstract
The invention discloses a prefabricated bridge deck structure of a steel-concrete composite beam and a construction method thereof, wherein the bridge deck structure comprises a plurality of bridge deck units, the width of each bridge deck unit is matched with the width of a bridge, an upper steel plate and a lower steel plate are arranged in each bridge deck unit correspondingly, the lower steel plate is arranged along the length of each bridge deck unit, a plurality of shear nails are arranged on the top surface of each lower steel plate, the upper steel plate and the lower steel plate are connected through a plurality of connecting studs in a welding mode, the height of each connecting stud is higher than that of each shear nail, the lower steel plate is positioned on the bottom surface of each bridge deck unit, and the lower steel plate is used for connecting steel main beams in a welding mode. The arrangement of conventional shear nails can be reduced by about 30 percent, the overall structural rigidity of the connecting nail group can be improved, the connecting performance of the bridge deck and the steel girder can be effectively enhanced, and the connecting reliability between the bridge deck and the steel girder is improved.
Description
Technical Field
The invention relates to the technical field of prefabricated bridge decks, in particular to a prefabricated bridge deck structure of a steel-concrete composite beam and a construction method thereof.
Background
The construction of the steel-concrete composite beam adopting the prefabricated bridge deck slab is carried out, the conventional scheme is that the concrete bridge deck slab is prefabricated in blocks, notches are reserved in the bridge deck slab at the corresponding positions where the clustering shear nails are arranged on the steel main beams, and concrete is poured and sealed after the concrete slab is installed, so that the aim of connecting the concrete slab and the steel main beams is fulfilled. According to the scheme, the cluster shear nails can be arranged at the reserved groove openings of the bridge deck, and the problems that the arrangement number of the shear nails is limited, the stress at the shear nails is concentrated, the arrangement of reinforcing steel bars of the bridge deck is influenced, the concrete at the opening positions needs to be poured on site and the like exist. The scheme in addition is pre-buried in the concrete with the shear force nail when prefabricating the decking, reserves the bolt hole in the concrete bottom, waits to erect the back and is connected steel girder top flange and concrete decking through the bolt with the concrete decking through the concrete decking, nevertheless needs to reserve the bolt hole in this scheme concrete slab, bolt hole off normal easily appears when concreting, pre-buried bolt hole quality is not high leads to later stage connection quality unreliable, the trompil weakens the scheduling problem to concrete slab, and the construction is comparatively complicated.
Disclosure of Invention
The invention aims to solve the problems that the prior art has limited shear nail arrangement quantity, concentrated stress, large field construction workload, difficult control of construction quality and the like caused by pouring of reserved hole concrete; the scheme of reserving the bolt holes in the prefabricated bridge deck slab has the defects that the connection quality is unreliable, the bolt holes are prone to deviation during pouring, the bolt holes are prone to loosening and falling under the vibration effect of a train to cause potential safety hazards, and holes weaken the structure, and the prefabricated bridge deck slab structure of the steel-concrete composite beam and the construction method thereof are provided.
In order to achieve the purpose, the invention provides the following technical scheme:
the prefabricated bridge deck structure of the steel-concrete composite beam comprises a plurality of bridge deck units, wherein the width of each bridge deck unit is matched with the width of a bridge, corresponding upper steel plates and lower steel plates are arranged in the bridge deck units, the lower steel plates are arranged along the length of the bridge deck units, a plurality of shear nails are arranged on the top surfaces of the lower steel plates, the upper steel plates and the lower steel plates are connected through a plurality of connecting studs in a welded mode, the height of each connecting stud is higher than that of each shear nail, the lower steel plates are located on the bottom surfaces of the bridge deck units, and the lower steel plates are used for being connected with steel girders in a welded mode.
The upper steel plate can be arranged at the full length or at intervals, and is considered according to the arrangement requirement of the connecting studs.
By adopting the precast bridge deck structure of the steel-concrete composite beam, the width of the bridge deck unit is matched with the width of a bridge, namely, the bridge is only segmented in the longitudinal direction, so that the construction of site concrete is favorably reduced, the integrity of the connecting stud is better by arranging the upper steel plate, the lower steel plate and the connecting stud between the upper steel plate and the lower steel plate, the requirements of no deviation and accurate positioning are ensured when the bridge deck unit is pre-embedded, the bridge deck unit can be used as a shear nail in a concrete plate, about 30 percent of arrangement of conventional shear nails can be reduced, the integral structural rigidity of a connecting stud group can be improved, the longitudinal force transmission of the bridge deck is improved, the longitudinal force transmission is more uniform, the thickness of a bridge deck is favorably reduced, the connecting performance of the bridge deck and a steel main beam can be effectively enhanced, the bolt connection of the structure is also avoided, and the safety risks such as falling and the like in the later operation process can be effectively prevented, the slippage between the steel fixed beam and the bridge deck is reduced, and the connection reliability between the bridge deck and the steel beam is improved.
Preferably, the upper end of the connecting peg extends out of the top surface of the bridge deck unit.
The connecting bolt can be used for connecting a structure to be installed on the bridge floor, so that the connecting performance is improved, the arrangement of embedded parts in the bridge deck is further reduced, and the concrete slab is prevented from being weakened.
Further preferably, the connecting stud corresponding to the middle of the steel main beam is used for connecting a hanging ring.
Among the prior art, need install rings built-in fitting or the hole for hoist and mount on the reinforcing bar additional during hoist and mount prefabricated plate to can destroy the wholeness of decking, through pre-buried connecting the peg installation rings, need not to set up the built-in fitting of rings, the reinforcing bar rings atress of more conventional decking is more direct, reasonable, and the hoist and mount security is better, and prefabricated processing is convenient for make rings position be located the girder center, effectively improves the simplicity of decking hoist and mount location, is favorable to improving the efficiency of construction.
Further preferably, the upper steel plate is located on the top surface of the bridge deck unit.
Further preferably, the lower ends of the connecting studs extend out of the lower steel plate, and the steel main beam can be connected with the connecting studs in a welding mode.
The connection between the bridge deck and the steel girder is replaced by the connection stud group from the lower steel plate, so that the connection reliability with the steel girder can be further improved.
Further preferably, the connecting peg is provided with at least one layer of stirrup.
Further increasing the stiffness of the connecting peg group.
Further preferably, the stirrup is used for tying 2-3 rows of the connecting pin.
Further preferably, two adjacent wet joints are filled between the bridge deck units, the upper steel plate and the bridge deck units are equal in length, two adjacent bridge deck units are welded in the wet joints, the lower steel plates of the bridge deck units extend into the corresponding wet joints, and the shear nails are welded on the portions, in the wet joints, of the lower steel plates.
The full-length arrangement of the upper steel plate is beneficial to further improving the integrity of the bridge deck, and the wet joint is broken, so that the on-site construction is facilitated.
A method of constructing a prefabricated deck structure for a steel-concrete composite beam as claimed in any one of the preceding claims, comprising the steps of:
a. respectively processing an upper steel plate and a lower steel plate, forming through holes at corresponding positions of the upper steel plate and the lower steel plate, mounting connecting studs on the upper steel plate, mounting shear nails on the lower steel plate, and connecting the upper steel plate and the lower steel plate through the connecting studs to form an integral embedded part;
b. pre-embedding the integral embedded part, and pouring concrete to form a bridge deck unit;
c. hanging rings are installed at the top ends of the corresponding connecting studs, and the bridge deck units are hoisted through the hanging rings;
d. after being hoisted in place, the steel girder is welded and connected with the steel girder;
e. and c, repeating the steps c-d, constructing wet joints among the bridge deck units after the construction of all the bridge deck units is completed, and completing the installation of the prefabricated bridge deck.
By adopting the construction method of the prefabricated bridge deck structure of the steel-concrete composite beam, the length of the connecting stud between the upper steel plate and the lower steel plate is limited, the operation space is smaller, and the welding quality is ensured; the connecting stud is welded with the upper steel plate, the operation is convenient, both sides of the opening of the upper steel plate can be welded with the stud, the connecting quality is good, the connecting stud penetrates through the preformed hole of the lower steel plate, the connecting stud is welded with the lower steel plate at the bottom of the lower steel plate, and the welding quality and the stress performance of the whole embedded part are effectively guaranteed. Through pre-buried connecting stud installation rings, more conventional decking's reinforcing bar rings atress is more direct, reasonable, and the hoist and mount security is better, does benefit to the length that increases single decking unit, and then does benefit to and reduces on-the-spot concrete construction, shortens construction period, and prefabricated processing is convenient for make rings position be located the girder center, effectively improves decking hoist and mount location's simplicity, is favorable to improving the efficiency of construction.
Preferably, the method is applied to railway bridges, and further comprises a step f of connecting corresponding ballastless track plates through the connecting bolts.
For the railway bridge adopting the ballastless track, the arrangement mode is adopted, so that the embedded connecting steel bars are avoided, and meanwhile, the connecting performance is also enhanced.
In summary, compared with the prior art, the invention has the beneficial effects that:
1. the prefabricated bridge deck structure of the steel-concrete composite beam is beneficial to reducing the construction of on-site concrete, the connecting studs cannot deviate when being embedded, and can also be used as shear nails in a concrete slab, the arrangement of conventional shear nails can be reduced by about 30 percent, the overall structural rigidity of a connecting stud group can be improved, the longitudinal force transmission of the bridge deck is improved, the longitudinal force transmission is more uniform, the thickness of a bridge deck plate is reduced, the connecting performance of the bridge deck and a steel main beam can be effectively enhanced, the bolt connection is avoided as a whole structure, the safety risks of falling and the like in the later operation process are effectively prevented, the slippage between a steel-supported beam and the bridge deck is reduced, and the connecting reliability between the bridge deck and a steel beam is improved.
2. By adopting the prefabricated bridge deck structure of the steel-concrete composite beam, an embedded part of a hanging ring is not required to be arranged, the stress is more direct and reasonable compared with the stress of a steel hanging ring of a conventional bridge deck, the hoisting safety is better, the hanging ring is convenient to position in the center of a main beam due to prefabrication, the convenience of hoisting and positioning the bridge deck is effectively improved, and the construction efficiency is favorably improved.
3. By adopting the construction method of the prefabricated bridge deck structure of the steel-concrete composite beam, the welding quality and the stress performance of the whole embedded part are effectively ensured, the hanging ring is installed through the embedded connecting stud, the stress is more direct and reasonable compared with the stress of a steel bar hanging ring of a conventional bridge deck, the hoisting safety is better, the length of a single bridge deck unit is favorably increased, the site concrete construction is favorably reduced, the construction period is shortened, the position of the hanging ring is conveniently positioned in the center of a main beam through prefabrication, the convenience of hoisting and positioning the bridge deck is effectively improved, and the construction efficiency is favorably improved.
Description of the drawings:
FIG. 1 is a schematic structural view of a prefabricated deck structure of a steel-concrete composite beam according to example 1;
FIG. 2 is a schematic view of the structure A-A of FIG. 1;
FIG. 3 is a schematic structural view of a prefabricated bridge deck structural connection lifting ring of the steel-concrete composite beam in example 1;
FIG. 4 is a top view of the structure of FIG. 3;
fig. 5 is a schematic structural view of a prefabricated bridge deck structure of a steel-concrete composite girder according to example 1 at step f.
The labels in the figure are: 1-bridge deck unit, 2-upper steel plate, 3-lower steel plate, 4-shear pin, 5-connecting stud, 6-steel girder, 7-hanging ring, 8-stirrup and 9-ballastless track slab.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1, the prefabricated bridge deck structure of the steel-concrete composite beam of the present invention comprises a plurality of bridge deck units 1, wherein the width of each bridge deck unit 1 is adapted to the width of a bridge, generally, a steel-concrete composite beam bridge has at least two steel main beams 6, only one of the steel main beams 6 is shown in the attached drawings as a connection structure with the bridge deck unit 1, and the other steel main beams are arranged in the same manner. Be equipped with corresponding last steel sheet 2 and lower steel sheet 3 in the decking unit 1, it also can be located decking unit 1 inside to go up steel sheet 2 and lower steel sheet 3, it all follows with lower steel sheet 2 to go up steel sheet 3 the decking unit 1 leads to long the setting, certainly go up steel sheet 2 also can interval arrangement, 3 top surfaces of lower steel sheet are equipped with a plurality of shear force nails 4, go up through a plurality of connection pegs 5 welded connection between steel sheet 2 and the lower steel sheet 3, the height that connects peg 5 is higher than shear force nail 4, lower steel sheet 3 is located 1 bottom surface of decking unit, lower steel sheet 3 is used for welded connection steel girder 6. Of course, the lower end of the connecting stud 5 can also extend out of the bottom surface of the lower steel plate 3, correspondingly, a through hole for the connecting stud 5 to pass through is correspondingly formed in the top surface of the upper flange of the steel main beam 6, and the connecting stud 5 is connected with the bottom surface of the upper flange in a welding mode, so that the connection reliability of the connecting stud 5 and the steel main beam 6 can be further improved.
The width of the bridge deck unit 1 is matched with the width of a bridge, namely, the bridge is only segmented in the longitudinal direction, so that the construction of on-site concrete is favorably reduced, the connection studs 5 are arranged between the upper steel plate 2 and the lower steel plate 3, so that the integrity of the connection studs 5 is better, the requirements of no deviation and accurate positioning during pre-embedding are met, the connection studs can be used as shear nails in a concrete plate, about 30 percent of arrangement of conventional shear nails can be reduced, the overall structural rigidity of a connection stud group can be improved, the longitudinal force transmission of the bridge deck is improved, the longitudinal force transmission is more uniform, the thickness of a bridge deck plate is favorably reduced, the connection performance of the bridge deck plate and a steel main beam 6 can be effectively enhanced, the bolt connection is avoided on the whole structure, the safety risks of falling and the like in the later operation process can be effectively prevented, and the slippage between the steel girder and the bridge deck plate is reduced, the reliability of connection between the bridge deck and the steel beam is improved.
The bridge deck slab structure is formed by filling wet joints between two adjacent bridge deck slab units 1, the upper steel plate 2 is broken at the wet joints, the lower steel plate 3 of each adjacent bridge deck slab unit 1 extends into the corresponding wet joints and is welded and connected, and the shear nails 4 are welded on the portions, located in the wet joints, of the lower steel plate 3.
If the upper steel plate 2 is located on the top surface of the bridge deck unit 1, when the height of the connecting pin 5 is high, at least one layer of stirrup 8 can be arranged on the connecting pin 5 to further increase the rigidity of the connecting pin group, as shown in fig. 1-2. Preferably, the stirrup 8 is used for tying 2-3 rows of the connecting pegs 5.
Preferably, the upper ends of the connecting studs 5 extend out of the top surface of the bridge deck unit 1, and the connecting studs 5 can be used for connecting structures to be installed on the bridge deck, so that the connecting performance is improved, the arrangement of embedded parts in the bridge deck is further reduced, and the concrete slab is prevented from being weakened.
As shown in fig. 3-4, correspond 6 middle parts of steel girder the connection peg 5 is used for connecting rings 7, among the prior art, need install rings built-in fitting or the hole for hoist connected on the reinforcing bar additional when hoisting the prefabricated plate to can destroy the wholeness of decking, through pre-buried connect peg 5 installation rings, need not to set up the built-in fitting of rings, the reinforcing bar rings atress of more conventional decking is more direct, reasonable, and the hoist and mount security is better, and prefabricated processing is convenient for make rings position be located the girder center, effectively improves the simplicity and convenience of decking hoist and mount location, is favorable to improving the efficiency of construction.
The construction of the prefabricated bridge deck structure of the steel-concrete composite beam comprises the following steps:
a. respectively processing an upper steel plate 2 and a lower steel plate 3, forming through holes at corresponding positions of the upper steel plate 2 and the lower steel plate 3, mounting a connecting stud 5 on the upper steel plate 2, mounting a shear pin 4 on the lower steel plate 3, and connecting the upper steel plate 2 and the lower steel plate 3 through the connecting stud 5 to form an integral embedded part;
b. pre-burying the integral embedded part, and pouring concrete to form a bridge deck unit 1, as shown in fig. 3; when the upper steel plate 2 is arranged to be full-length, pouring is performed from two sides of the upper steel plate when concrete is poured; when the upper steel plate 2 is discontinuously arranged, filling by utilizing gaps among the blocks of the upper steel plate 2;
c. installing a lifting ring 7 at the top end of the corresponding connecting stud 5, and lifting the bridge deck unit 1 through the lifting ring 7;
d. after being hoisted in place, the steel girder is welded with the steel girder 6;
e. and c, repeating the steps c-d, constructing wet joints among the bridge deck units 1 after the construction of all the bridge deck units 1 is completed, and finishing the installation of the prefabricated bridge deck.
Connect the stud 5 with last steel sheet 2 welding earlier, go up 2 trompils both sides of steel sheet and all can weld with the stud, connection quality is better, passes the preformed hole of lower steel sheet 3 again, will connect the stud 5 and weld with lower steel sheet 3 bottom steel sheet 3 down, effectively guarantees the welding quality and the atress performance of whole built-in fitting. Through pre-buried connecting stud 5 installation rings 7, more conventional decking's reinforcing bar rings atress is more direct, reasonable, and the hoist and mount security is better, does benefit to the length that increases single decking unit, and then does benefit to and reduces on-the-spot concrete construction, shortens construction period, and prefabricated processing is convenient for make rings position in girder center, effectively improves decking hoist and mount location's simplicity, is favorable to improving the efficiency of construction.
This structure still specially adapted adopts ballastless track's railway bridge, the length that exposes of connecting stud 5 is reserved when pre-buried as required, finishes the back at hoist and mount, amputates rings 7, later, contains step f, through connecting stud 5 and connecting corresponding ballastless track board 9, as shown in fig. 5, both avoided pre-buried connecting reinforcement, also strengthened connection performance simultaneously, do benefit to the ride comfort that improves track installation and operation stage.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a prefabricated bridge deck plate structure of steel-concrete composite beam, its characterized in that contains a plurality of decking units (1), the width adaptation bridge of decking unit (1) width, be equipped with corresponding last steel sheet (2) and lower steel sheet (3) in decking unit (1), lower steel sheet (3) are followed decking unit (1) leads to long the setting, steel sheet (3) top surface is equipped with a plurality of shear force nails (4) down, go up through a plurality of connection pegs (5) welded connection between steel sheet (2) and the lower steel sheet (3), the height that highly is higher than of connection peg (5) the height of shear force nail (4), steel sheet (3) bottom surface is located decking unit (1) down, steel sheet (3) are used for welded connection steel girder (6) down.
2. The precast deck structure of steel-concrete composite beams according to claim 1, wherein the upper ends of the connecting studs (5) protrude out of the top surface of the deck slab unit (1).
3. Prefabricated bridge deck structure of steel-concrete composite beams according to claim 2, characterized in that said connecting studs (5) corresponding to the middle of said steel main beams (6) are used for connecting lifting rings (7).
4. The precast deck structure of steel-concrete composite beams according to claim 2, characterized in that the upper steel plate (2) is located on the top surface of the deck slab unit (1).
5. Prefabricated bridge deck structure of steel-concrete composite beams according to claim 2, characterized in that the lower ends of said connecting studs (5) protrude beyond said lower steel plate (3), said main steel beams (6) being able to be replaced by welding said connecting studs (5).
6. Prefabricated bridge deck structure for steel-concrete composite beams according to any one of claims 2 to 5, wherein said connecting studs (5) are provided with at least one layer of stirrups (8).
7. Prefabricated bridge deck structure of steel-concrete composite beams according to claim 6, characterized in that said stirrups (8) are used to tie 2-3 rows of said connecting studs (5).
8. The precast bridge deck structure of steel-concrete composite beam according to any one of claims 2 to 5, wherein a wet joint is filled between two adjacent bridge deck units (1), the upper steel plate (2) and the bridge deck units (1) are equal in length, the lower steel plates (3) of two adjacent bridge deck units (1) extend into the corresponding wet joint and are welded, and the shear nails (4) are welded on the part of the lower steel plates (3) positioned in the wet joint.
9. A method of constructing a pre-fabricated deck structure for a steel-concrete composite beam according to any one of claims 2 to 8, comprising the steps of:
a. an upper steel plate (2) and a lower steel plate (3) are respectively machined, through holes are formed in the corresponding positions of the upper steel plate (2) and the lower steel plate (3), connecting studs (5) are installed on the upper steel plate (2), shear pins (4) are installed on the lower steel plate (3), and then the upper steel plate (2) and the lower steel plate (3) are connected through the connecting studs (5) to form an integral embedded part;
b. pre-burying the integral embedded part, and pouring concrete to form a bridge deck unit (1);
c. hanging rings (7) are installed at the top ends of the corresponding connecting studs (5), and the bridge deck units (1) are hoisted through the hanging rings (7);
d. after being hoisted in place, the steel girder is welded with the steel girder (6);
e. and c, repeating the steps c-d, constructing wet joints among the bridge deck units (1) after the construction of all the bridge deck units (1) is completed, and finishing the installation of the prefabricated bridge deck.
10. The construction method of a prefabricated bridge deck structure of a steel-concrete composite beam according to claim 9, applied to railroad bridges, further comprising the step f of connecting corresponding ballastless track slabs (9) by means of said connecting studs (5).
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| CN204571093U (en) * | 2015-02-10 | 2015-08-19 | 同济大学 | The compound beam syndeton of tape welding nail and the compound beam containing this syndeton |
| CN108894431A (en) * | 2018-07-26 | 2018-11-27 | 广西大学 | Friction shear resisting fashioned iron-precast concrete combination beam preparation and its construction method |
| CN109680610A (en) * | 2018-12-14 | 2019-04-26 | 浙江交通职业技术学院 | A kind of combined beam structure and manufacturing process of high strength exploitation |
| CN109868734A (en) * | 2019-03-25 | 2019-06-11 | 浙江温州沈海高速公路有限公司 | A kind of combination beam Stayed Cable Bridge panel novel seam structure and its construction method |
| CN211472129U (en) * | 2019-10-18 | 2020-09-11 | 广州大学 | Shear connector for glue-pouring high-strength bolt |
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Application publication date: 20220201 |