CN209923753U - Steel plate combination beam with integrally prefabricated steel main beam and bridge deck and bridge - Google Patents
Steel plate combination beam with integrally prefabricated steel main beam and bridge deck and bridge Download PDFInfo
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- CN209923753U CN209923753U CN201920556738.4U CN201920556738U CN209923753U CN 209923753 U CN209923753 U CN 209923753U CN 201920556738 U CN201920556738 U CN 201920556738U CN 209923753 U CN209923753 U CN 209923753U
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Abstract
The utility model belongs to the technical field of the bridge engineering technique and specifically relates to a steel sheet composite beam and bridge of whole prefabricated assembly of steel girder and decking are related to. Prefabricating a steel main beam and a precast concrete bridge deck; precast concrete decking includes main concrete slab and pre-buried many horizontal embedded steel bars and many vertical embedded steel bars in the main concrete slab, horizontal embedded steel bar with the both ends of vertical embedded steel bar extend to respectively the outside on main concrete slab's border, main concrete slab is fixed to be established prefabricated steel girder top. The steel girder bridge plate connecting structure solves the technical problems that in the prior art, the connection stability of a steel girder and a bridge plate is poor, the steel consumption of the whole bridge plate is large, and the cost is high.
Description
Technical Field
The utility model belongs to the technical field of the bridge engineering technique and specifically relates to a steel sheet composite beam and bridge of whole prefabricated assembly of steel girder and decking are related to.
Background
The steel structure and the reinforced concrete combined structure are commonly used in large-span bridges in China, but in the past, medium-small-span bridges are generally in a concrete structure from the economical point of view. Although the concrete structure is low in manufacturing cost, the concrete structure has the defects of heavy structure, difficulty in controlling construction quality, large environmental influence, incapability of recycling after the service life is over and the like. The steel structure is opposite to the concrete structure, the structure is light, the construction quality is reliable, the maintenance is convenient, the environmental impact is small, the steel structure can be recycled after the service life is over, and the main defect is that the manufacturing cost is high compared with the concrete structure.
On the premise of considering both economy and bridge quality, the steel-concrete composite structure finds a proper joint point from a steel bridge and a concrete bridge, so that the structural design, construction and maintenance are more reasonable, and particularly, the steel plate composite beam bridge has the advantage of full-life economy in small and medium-span bridges, so that the steel-concrete composite bridge is rapidly popularized in recent years.
The research and practice of China in the aspect of steel plate composite beam bridges have obvious gaps, which are mainly reflected in the combination mode of concrete bridge deck boards and steel girders and corresponding construction time, and the current more mainstream schemes have two types: the first is that the steel girder is prefabricated, and the bridge deck is cast in situ at the bridge position; and the second method is that the steel girder and the bridge deck are respectively prefabricated and are combined at the bridge position after being transported to the site. The two schemes place the most critical process of combining steel and concrete on a bridge site, the construction quality is difficult to guarantee, the dead weights of the bridge deck and the steel girder are respectively borne by the steel girder, the steel consumption is improved, and the economy is not advantageous.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steel sheet combination beam of whole prefabricated assembly of steel girder and decking to there is the steel girder among the solution prior art to be connected with the decking stability relatively poor, and holistic big, the with high costs technical problem of steel volume.
The utility model provides a pair of steel girder and integral prefabricated steel sheet combination beam of decking, include: prefabricating a steel main beam and a precast concrete bridge deck;
precast concrete decking includes main concrete slab and pre-buried many horizontal embedded steel bars and many vertical embedded steel bars in the main concrete slab, horizontal embedded steel bar with the both ends of vertical embedded steel bar extend to the outside on main concrete slab's border, main concrete slab is fixed to be established prefabricated steel girder top.
Further, a plurality of the transverse embedded steel bars are uniformly arranged at intervals along the length direction of the main concrete slab.
Furthermore, a plurality of longitudinal embedded steel bars are uniformly arranged at intervals along the width direction of the main concrete slab.
Further, the transverse embedded steel bars and the longitudinal embedded steel bars are both annular.
Further, the prefabricated steel girder comprises a top plate, a web plate and a bottom plate;
the web plate is arranged between the top plate and the bottom plate, two ends of the web plate are respectively fixedly connected with the top plate and the bottom plate, and a plurality of shear nails are uniformly distributed on the top plate.
Furthermore, a plurality of first threaded holes are formed in the web.
Furthermore, a plurality of second threaded holes are formed in the bottom plate.
Further, the steel plate composite beam of the steel girder and the integral prefabricated bridge deck further comprises a plurality of transverse connecting reinforcing steel bars and a plurality of longitudinal connecting reinforcing steel bars, wherein the transverse connecting reinforcing steel bars and the longitudinal connecting reinforcing steel bars are respectively used for penetrating the transverse embedded reinforcing steel bars and the longitudinal embedded reinforcing steel bars to extend to two ends of the outer portion of the edge of the main concrete slab.
Another object of the utility model is to provide a bridge has a plurality of as above steel girder and the whole prefabricated steel sheet composite beam who assembles of decking, horizontal embedded steel bar or vertical embedded steel bar on two adjacent precast concrete decking extend to the crisscross setting in outside at main concrete slab's border.
Further, the dislocation distance of the transverse embedded steel bars or the longitudinal embedded steel bars on two adjacent precast concrete bridge panels is more than or equal to 1 cm.
The utility model discloses following beneficial effect has:
the utility model provides a steel plate composite beam of steel girder and decking integral prefabrication assembly, it includes prefabricated steel girder and fixes the precast concrete decking who establishes above prefabricated steel girder, precast concrete decking includes main concrete slab and pre-buried many horizontal embedded steel bars and many vertical embedded steel bars in the main concrete slab, the both ends of horizontal embedded steel bar and vertical embedded steel bar extend to the outside at the border of main concrete slab; thus, the precast concrete bridge deck and the precast steel main beam are integrally arranged when leaving the factory, so that the construction quality can be improved, the durability of the whole structure is improved, and the construction period can be shortened; in addition, the steel plate composite beam which is formed by integrally prefabricating and assembling a plurality of steel main beams and the bridge deck is connected only by arranging transverse embedded and longitudinal embedded steel bars in the precast concrete bridge deck, the structure is simple, a stiffening structure and a steel plate structure are not needed, the using amount of steel can be reduced, the construction cost is reduced, and the technical problems that the stability of connection between the steel main beams and the bridge deck is poor, the whole steel using amount is large, and the cost is high in the prior art are solved.
The utility model provides a pair of bridge has a plurality of as above steel girder and the whole prefabricated steel sheet combination beam of assembling of decking, horizontal embedded steel bar on two adjacent precast concrete decking or vertical embedded steel bar extend to the crisscross setting in outside at main concrete slab's border. The beneficial effect that its produced is the same with the effect of the steel sheet combination beam of the whole prefabricated assembly of steel girder and decking.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a steel plate composite beam integrally prefabricated and assembled by a steel girder and a deck slab according to an embodiment of the present invention;
fig. 2 is a partial enlarged view of the steel plate composite beam integrally prefabricated with the steel girder and the deck slab according to the embodiment of the present invention;
fig. 3 is a top view of the steel plate composite beam integrally prefabricated with the deck slab and provided by the embodiment of the present invention.
Icon: 100-prefabricating a steel girder; 200-precast concrete deck slab; 300-transverse connecting steel bars; 400-longitudinal connecting steel bars; 110-a top plate; 120-a web; 130-a backplane; 210-a primary concrete slab; 220-transversely embedding reinforcing steel bars; 230-longitudinally embedding reinforcing steel bars; 111-shear pins; 121-a first threaded hole; 131-second threaded hole.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a pair of steel plate composite beam of whole prefabricated assembly of steel girder and decking, include: a prefabricated steel girder 100 and a prefabricated concrete deck slab 200;
the precast concrete deck slab 200 includes a main concrete slab 210, and a plurality of transverse embedded steel bars 220 and a plurality of longitudinal embedded steel bars 230 embedded in the main concrete slab 210, wherein both ends of the transverse embedded steel bars 220 and the longitudinal embedded steel bars 230 extend to the outside of the edge of the main concrete slab 210, and the main concrete slab 210 is fixedly arranged above the precast steel main beam 100.
Wherein, prefabricated steel girder 100 and precast concrete decking 200 are all prefabricated in the mill to connect prefabricated steel girder 100 and precast concrete decking 200, with the construction quality of the connecting portion between guarantee prefabricated steel girder 100 and precast concrete decking 200.
In this embodiment, the steel plate composite beam with the integrally prefabricated steel girder and the deck slab comprises a prefabricated steel girder 100 and a precast concrete deck slab 200 fixedly arranged above the prefabricated steel girder 100, wherein the precast concrete deck slab 200 comprises a main concrete slab 210, and a plurality of transverse embedded steel bars 220 and a plurality of longitudinal embedded steel bars 230 embedded in the main concrete slab 210, and two ends of the transverse embedded steel bars 220 and the longitudinal embedded steel bars 230 extend to the outside of the edge of the main concrete slab 210; thus, the precast concrete bridge deck and the precast steel main beam 100 are integrally arranged when leaving the factory, so that the construction quality can be improved, the durability of the whole structure is improved, and the construction period can be shortened; in addition, the steel plate composite beam which is formed by integrally prefabricating and assembling a plurality of steel girders and a bridge deck can be connected only by arranging transverse embedded and longitudinal embedded steel bars 230 in the precast concrete bridge deck, the structure is simple, a stiffening structure and a steel plate structure are not needed, the using amount of steel can be reduced, the construction cost is reduced, and the technical problems that the stability of connection between the steel girders and the bridge deck is poor, the whole steel using amount is large, and the cost is high in the prior art are solved.
On the basis of the above embodiment, further, a plurality of transverse embedded steel bars 220 are uniformly arranged at intervals along the length direction of the main concrete slab 210.
Further, a plurality of longitudinal embedded steel bars 230 are uniformly spaced along the width direction of the main concrete slab 210.
The interval between two adjacent transverse embedded steel bars 220 and two adjacent longitudinal embedded steel bars 230 is adjusted according to specific use requirements.
In this embodiment, the length and the width direction evenly distributed of main concrete slab 210 are followed respectively to many horizontal embedded steel bars 220 and many vertical embedded steel bars 230, so not only can ensure precast concrete deck slab 200's intensity, the subsequent connection of still being convenient for.
On the basis of the above embodiment, further, the transverse embedded steel bars 220 and the longitudinal embedded steel bars 230 are both annular.
In this embodiment, horizontal embedded steel bar 220 and vertical embedded steel bar 230 are the annular setting, do not advance the intensity that can effectual guarantee precast concrete decking 200 itself, and the mode of setting up of annular steel bar can reduce the use amount of steel moreover, reduce cost.
As shown in fig. 2 and 3, based on the above embodiments, further, the prefabricated steel girder 100 includes a top plate 110, a web 120 and a bottom plate 130;
the web 120 is disposed between the top plate 110 and the bottom plate 130, two ends of the web 120 are respectively and fixedly connected to the top plate 110 and the bottom plate 130, and a plurality of shear pins 111 are uniformly distributed on the top plate 110.
Wherein, the two ends of the web 120 are connected with the top plate 110 and the bottom plate 130 in a welding manner, so as to ensure the strength of the prefabricated steel girder 100.
In addition, the dead weight of the precast steel girder 100 and the precast concrete deck 200 is borne by the steel-concrete composite section. Compared with the prior art, the dead weight of the steel girder and the deck slab is completely born by the steel girder, the stress of the steel girder is reduced, the steel consumption is reduced, and the economy of the structural form is improved.
In this embodiment, a plurality of shear force nails 111 are evenly distributed on the top plate 110, and the shear force nails 111 extend to one end of the longitudinal embedded steel bar 230, so when wet joint concrete is poured, it can be ensured that the prefabricated steel girder 100 and the prefabricated concrete deck slab 200 are connected by a steel bar structure, and the connection stability of the prefabricated steel girder 100 and the prefabricated concrete deck slab 200 can be further improved.
In addition to the above embodiments, a plurality of first threaded holes 121 are further provided on the web 120.
Further, a plurality of second threaded holes 131 are formed in the bottom plate 130.
In this embodiment, the first and second threaded holes 121 and 131 may be the same size, and both the first and second threaded holes 121 and 131 are completed in advance at the factory.
On the basis of the above embodiment, further, the steel plate composite beam with the integrally prefabricated steel main beam and the deck slab further includes a plurality of transverse connecting steel bars 300 and longitudinal connecting steel bars 400, and the plurality of transverse connecting steel bars 300 and the plurality of longitudinal connecting steel bars 400 are respectively used for penetrating through two ends of the outer portions of the edges of the transverse embedded steel bars 220 and the longitudinal embedded steel bars 230 extending to the main concrete slab 210.
In the embodiment, the prefabricated bridge deck is installed on site, and the common steel bars in the reserved grooves of the bridge deck and the shear nails 111 on the steel girder top plate 110 are easy to erect, so that the requirement on the construction precision of each prefabricated part is very high; the joint in this embodiment is few, adopts annular reinforcing bar to wear, and the joint construction is succinct, does not need very high construction precision.
Another object of the utility model is to provide a bridge, have a plurality of as above steel girder and the whole prefabricated steel sheet composite beam who assembles of decking, horizontal embedded steel bar 220 or vertical embedded steel bar 230 on two adjacent precast concrete decking 200 extend to the crisscross setting in outside at main concrete slab 210's border. The beneficial effect that its produced is the same with the effect of the whole prefabricated steel sheet combination beam of assembling of steel girder and decking, no longer gives unnecessary details.
On the basis of the above embodiment, further, the dislocation distance of the transverse embedded steel bars 220 or the longitudinal embedded steel bars 230 on two adjacent precast concrete bridge deck boards 200 is greater than or equal to 1 cm.
In this embodiment, horizontal embedded steel bar 220 or vertical embedded steel bar 230 dislocation on two adjacent precast concrete bridge panels 200, and the distance more than or equal to 1cm of dislocation, collision when preventing the installation, when the connection is the bridge whole, adopt the mode of pouring wet joint concrete.
The utility model discloses the concrete construction method of steel sheet combination beam of steel girder and the whole prefabricated assembly of decking does: the prefabricated steel girder 100 is processed in a factory, and comprises a top plate 110, a web plate 120 and a bottom plate 130, a shear nail 111 is arranged on the top plate 110, a first threaded hole 121 and a second threaded hole 131 are respectively arranged on the web plate 120 and the bottom plate 130, then the prefabricated steel girder is placed on a fixed jig frame or a full-space support with the fulcrum interval not exceeding 2m, a template of a main concrete plate 210 is installed, self construction steel bars, transverse embedded steel bars 220 and longitudinal embedded steel bars 230 of the main concrete plate 210 are bound, and the main concrete plate 210 is poured. And maintaining and storing the beam after pouring, transporting the beam to a bridge site according to the construction progress requirement, hoisting the beam to the bridge site, connecting the steel girder parts of the adjacent steel plate beams by bolting and welding, penetrating the site transverse connecting steel bars 300 and penetrating the longitudinal embedded steel bars 230, penetrating the longitudinal connecting steel bars 400 and penetrating the transverse embedded steel bars 220, and maintaining after pouring wet joint concrete.
When the steel girder and the steel plate composite beam integrally prefabricated and assembled on the bridge deck are connected into a bridge, the transverse connection of the adjacent beam pieces is formed by penetrating the transverse embedded steel bars 220 through the on-site longitudinal connecting steel bars 400 and pouring wet joint concrete; the longitudinal connection of the bridge decks of the adjacent beam pieces is formed by the fact that the on-site transverse connecting steel bars 300 penetrate through the longitudinal embedded steel bars 230 and pouring wet joint concrete.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a steel sheet combination beam of whole prefabricated assembly of steel girder and decking which characterized in that includes: prefabricating a steel main beam and a precast concrete bridge deck;
precast concrete decking includes main concrete slab and pre-buried many horizontal embedded steel bars and many vertical embedded steel bars in the main concrete slab, horizontal embedded steel bar with the both ends of vertical embedded steel bar extend to respectively the outside on main concrete slab's border, main concrete slab is fixed to be established prefabricated steel girder top.
2. The steel plate composite beam integrally prefabricated by the steel main beam and the bridge deck according to claim 1, wherein a plurality of transverse embedded steel bars are uniformly arranged at intervals along the length direction of the main concrete slab.
3. The steel plate composite beam integrally prefabricated by the steel main beam and the bridge deck according to claim 2, wherein a plurality of longitudinal embedded steel bars are uniformly arranged at intervals along the width direction of the main concrete slab.
4. The steel plate composite beam integrally prefabricated by the steel main beam and the bridge deck according to claim 1, wherein the transverse embedded steel bars and the longitudinal embedded steel bars are annular.
5. The steel plate composite beam integrally prefabricated with a bridge deck according to claim 1, wherein the prefabricated steel girder comprises a top plate, a web plate and a bottom plate;
the web plate is arranged between the top plate and the bottom plate, two ends of the web plate are respectively fixedly connected with the top plate and the bottom plate, and a plurality of shear nails are uniformly distributed on the top plate.
6. The steel plate composite beam integrally prefabricated with the main steel beam and the bridge deck according to claim 5, wherein the web plate is provided with a plurality of first threaded holes.
7. The steel plate composite beam with the integrally prefabricated main steel beam and bridge deck according to claim 5, wherein the bottom plate is provided with a plurality of second threaded holes.
8. The steel plate composite beam with the integrally prefabricated main steel beam and the integrally prefabricated bridge deck according to claim 1, further comprising a plurality of transverse connecting steel bars and a plurality of longitudinal connecting steel bars, wherein the transverse connecting steel bars and the longitudinal connecting steel bars are respectively used for penetrating the two ends of the outer portions of the transverse embedded steel bars and the longitudinal embedded steel bars, and the two ends of the outer portions of the edges of the main concrete slab extend to the two ends of the outer portions of the edges of the main concrete slab.
9. A bridge, characterized in that, a plurality of steel plate composite beams which are integrally prefabricated and assembled by main steel beams and bridge decks according to any one of claims 1 to 8 are arranged in a staggered manner, and transverse embedded steel bars or longitudinal embedded steel bars on two adjacent precast concrete bridge decks extend to the outside of the edge of the main concrete slab.
10. The bridge according to claim 9, wherein the dislocation distance of the transverse embedded steel bars or the longitudinal embedded steel bars on two adjacent precast concrete bridge panels is greater than or equal to 1 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920556738.4U CN209923753U (en) | 2019-04-23 | 2019-04-23 | Steel plate combination beam with integrally prefabricated steel main beam and bridge deck and bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920556738.4U CN209923753U (en) | 2019-04-23 | 2019-04-23 | Steel plate combination beam with integrally prefabricated steel main beam and bridge deck and bridge |
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| CN209923753U true CN209923753U (en) | 2020-01-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267383A (en) * | 2020-10-14 | 2021-01-26 | 中国建筑第八工程局有限公司 | Construction method of prefabricated bridge deck steel-concrete composite beam |
| CN114775425A (en) * | 2022-04-21 | 2022-07-22 | 清华大学 | Bridge deck plate assembly, fabricated composite bridge and construction method thereof |
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2019
- 2019-04-23 CN CN201920556738.4U patent/CN209923753U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267383A (en) * | 2020-10-14 | 2021-01-26 | 中国建筑第八工程局有限公司 | Construction method of prefabricated bridge deck steel-concrete composite beam |
| CN114775425A (en) * | 2022-04-21 | 2022-07-22 | 清华大学 | Bridge deck plate assembly, fabricated composite bridge and construction method thereof |
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Address after: No.928 yuhangtang Road, Xihu District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang shuzhijiaoyuan Technology Co.,Ltd. Address before: No. 89 round City West Road, Xihu District, Hangzhou, Zhejiang Patentee before: ZHEJIANG PROVINCIAL INSTITUTE OF COMMUNICATIONS PLANNING DESIGN & RESEARCH Co.,Ltd. |