CN210636679U - Steel-concrete composite beam structure - Google Patents
Steel-concrete composite beam structure Download PDFInfo
- Publication number
- CN210636679U CN210636679U CN201920896707.3U CN201920896707U CN210636679U CN 210636679 U CN210636679 U CN 210636679U CN 201920896707 U CN201920896707 U CN 201920896707U CN 210636679 U CN210636679 U CN 210636679U
- Authority
- CN
- China
- Prior art keywords
- steel
- plate
- concrete
- beam structure
- composite beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model relates to a steel-concrete composite beam structure, which comprises a prefabricated steel framework (I) and reinforced concrete (II); an upper clapboard (6) and a lower clapboard (7) which are respectively welded and tightly attached below a neutral axis (11) of the cross section of the beam are arranged on the inner side of the web plate (2); in the hogging moment area, the upper partition plate (6) and the lower partition plate (7) are vertically welded on the bottom plate (1); arranging transverse stiffening ribs (8) on the top surface of the upper flange plate (3); after the prefabricated steel skeleton (I) is erected on site, reinforced concrete (II) is arranged in the open cavity on the inner side of the web plate (2) and on the top surface of the upper flange plate to form the steel-concrete combined beam. The utility model discloses a steel-concrete connection interface connection performance is good, hogging moment district concrete is difficult to the fracture, construction convenience is swift, has good technological economic benefits.
Description
Technical Field
The utility model belongs to steel-concrete integrated configuration field, in particular to steel-concrete composite beam.
Background
The traditional I-shaped steel concrete composite beam is a steel concrete composite structure formed by connecting an I-shaped main beam and a concrete bridge deck together through a shear connector, has the advantages of high rigidity, high strength, material saving, quick construction and the like, and is widely applied to bridge types such as simply supported beam bridges, continuous beam bridges, arch bridges and the like.
The I-shaped steel concrete composite beam has two main adverse conditions in terms of stress: one is that in a continuous beam bridge, a concrete bridge deck slab in a hogging moment area is thin, cracks are easy to propagate under the action of hogging moment at a fulcrum, so that the bridge deck slab cracks, and therefore a large amount of steel bars need to be arranged in the hogging moment area; the other is that the connection performance of the steel concrete connection interface is poor, and a complex shear connector structure needs to be arranged to ensure the transmission of longitudinal shear force and prevent the concrete bridge deck from lifting from the surface of the steel beam.
SUMMERY OF THE UTILITY MODEL
The technical problem is as follows: in order to solve the problems, the utility model provides a steel-concrete composite beam, which increases the contact area between the concrete and the steel skeleton by arranging the reinforced concrete in the compression area of the web plate, thereby reducing the shearing force of the steel-concrete connection interface and avoiding arranging a complex shearing force connecting piece structure on the steel-concrete connection interface; meanwhile, concrete is poured into the whole section of the web part in the hogging moment area, so that the section rigidity is increased, and the tensile force borne by the concrete in the hogging moment area is reduced; in addition, the steel skeleton and the auxiliary structure thereof can be prefabricated in a factory and used as a support during construction, and construction is convenient.
The technical scheme is as follows: in order to achieve the above purpose, the technical solution of the present invention is as follows:
the utility model discloses a steel-concrete composite beam structure, which comprises a prefabricated steel skeleton and reinforced concrete; the prefabricated steel skeleton consists of a bottom plate, a web plate, an upper flange plate, a stud connecting piece, a shear connecting piece, an upper partition plate, a lower partition plate and a transverse stiffening rib; an upper partition plate and a lower partition plate which are closely attached are respectively welded on the inner side of the web plate below a neutral axis of the beam section; in the hogging moment area, the upper partition plate and the lower partition plate are vertically welded on the bottom plate; arranging transverse stiffening ribs on the top surface of the upper flange plate; after the prefabricated steel framework is erected on site, reinforced concrete is arranged in the open cavity on the inner side of the web plate and on the top surface of the upper flange plate, and the steel-concrete combined beam is formed.
The web and the upper flange plate are L-shaped steel rolled in a factory and formed in one step, and the web is connected with the bottom plate in a welding mode.
And a stud connecting piece is welded above the neutral axis on the inner side of the web plate.
In the hogging moment area, the web inboard, arranged trompil connecting piece above the neutral axis, welded the peg connecting piece below the neutral axis.
And a shear connector is arranged on the top surface of the upper flange plate.
The prefabricated steel framework material can also be a fiber reinforced composite material.
The transverse stiffening ribs are connected with the top surface of the upper flange plate through welding or bolts.
The shear connectors are stud connectors, PBL connectors, angle steel connectors, bent rib connectors and combination forms thereof.
Has the advantages that: compared with the prior art, the beneficial effects of the utility model are that:
1. in the utility model, the partition board is arranged in the web plate, and the concrete is poured in the cavity on the upper side of the neutral shaft in the web plate, so that on one hand, the contact area between the concrete and the steel beam is increased, the shear force of the steel-concrete connection interface is greatly reduced, the steel-concrete surface separation phenomenon caused by corrosion and fracture of a shear connecting piece is avoided, and the safety of the structure on the steel-concrete connection interface is improved; on the other hand, the bending resistance bearing capacity of the structure is enhanced, concrete is prevented from being arranged in a tension area, and the self weight of the structure is reduced.
2. The utility model discloses in through the inside full cross-section concreting of web in the hogging moment district, increased the bending stiffness in hogging moment district cross-section to greatly reduced the pulling force that hogging moment district concrete bridge deck portion top received, improved hogging moment district concrete slab's atress situation, reduced the reinforcing bar in hogging moment district and arranged the demand, restrained cracked developing.
3. The utility model provides a I-shaped steel skeleton can be prefabricated in the mill, directly hoists in the scene to as the support during construction, pour concrete again, construction convenience.
Drawings
FIG. 1 is a general view of the steel-concrete composite beam structure of the present invention,
FIG. 2 is a schematic view showing a structure of a steel-concrete composite beam according to the present invention in a separated form,
FIG. 3 is a schematic view of the prefabricated steel framework of the present invention,
FIG. 4 is a schematic view showing a structure of a hogging moment steel-concrete composite beam of the present invention in a separated manner,
FIG. 5 is a schematic view of a hogging moment region open-hole connection.
In the drawings: prefabricating a steel framework I and reinforced concrete II; bottom plate 1, web 2, upper flange plate 3, stud connecting piece 4, shear force connecting piece 5, go up baffle 6, lower baffle 7, horizontal stiffening rib 8, trompil connecting piece 9, tensile reinforcing bar 10, neutral axis 11.
Detailed Description
The following further explains the embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the utility model relates to a steel-concrete composite beam structure, which comprises a prefabricated steel framework I and reinforced concrete II. As shown in fig. 2, the web plate 2 and the upper flange plate 3 are an integrally formed L-shaped plate, the stud connecting piece 4 and the shear connecting piece 5 are respectively welded on the surfaces of the web plate 2 and the upper flange plate 3, and the upper partition plate 6 and the web plate 2 are welded below a neutral axis; the studs on the other side of the web plate are symmetrically arranged, and the lower clapboard 7 is welded below the upper clapboard 6 in height; and then, the two L-shaped plates are symmetrically welded on the bottom plate, and finally, the transverse stiffening ribs 8 are welded on the top surface of the upper flange plate to finally form a prefabricated steel framework I shown in figure 3, at the moment, the upper partition plate 6 and the lower partition plate 7 are tightly attached together, and a closed cavity is formed below the partition plate inside the web plate.
As shown in FIG. 4, in the hogging moment area part, the upper partition plate 6 and the lower partition plate 7 on two sides are turned to be vertically welded on the bottom plate 1, the perforated connecting piece 9 is welded above the neutral axis 11 on the inner side of the web 2, and the stud connecting piece 4 is welded below the neutral axis 11, so that the whole internal section of the web 2 becomes a perforated cavity.
During on-site construction, firstly welding a prefabricated steel skeleton I, arranging a reinforcing mesh on the top surface of an upper flange plate after erection is finished, and placing longitudinal tensile reinforcing steel bars 10 into the perforated connecting piece 9 at a hogging moment area to assist the concrete in the hogging moment area to be pulled; and finally, arranging reinforced concrete II on the open cavity part of the web plate and the top surface of the upper flange plate to finally form a steel-concrete combined beam structure.
Claims (8)
1. A steel-concrete composite beam structure is characterized in that: the composite beam structure consists of a prefabricated steel framework (I) and reinforced concrete (II); the prefabricated steel skeleton (I) consists of a bottom plate (1), a web plate (2), an upper flange plate (3), a stud connecting piece (4), a shear connecting piece (5), an upper partition plate (6), a lower partition plate (7) and transverse stiffening ribs (8); an upper partition plate (6) and a lower partition plate (7) which are closely attached are respectively welded on the inner side of the web plate (2) below a neutral axis (11) of the beam section; in the hogging moment area, the upper partition plate (6) and the lower partition plate (7) are vertically welded on the bottom plate (1); arranging transverse stiffening ribs (8) on the top surface of the upper flange plate (3); after the prefabricated steel skeleton (I) is erected on site, reinforced concrete (II) is arranged in the open cavity on the inner side of the web plate (2) and on the top surface of the upper flange plate to form the steel-concrete combined beam.
2. A steel-concrete composite beam structure according to claim 1, wherein: the web (2) and the upper flange plate (3) are L-shaped steel rolled in a factory and formed in one step, and the web (2) is connected with the bottom plate (1) through welding.
3. A steel-concrete composite beam structure according to claim 1, wherein: the inner side of the web plate (2) is welded with a stud connecting piece (4) above the neutral axis (11).
4. A steel-concrete composite beam structure according to claim 1, wherein: in the hogging moment area, the perforated connecting piece (9) is arranged above the neutral axis (11) at the inner side of the web plate (2), and the stud connecting piece (4) is welded below the neutral axis (11).
5. A steel-concrete composite beam structure according to claim 1, wherein: and a shear connector (5) is arranged on the top surface of the upper flange plate (3).
6. A steel-concrete composite beam structure according to claim 1, wherein: the prefabricated steel skeleton (I) material can also be a fiber reinforced composite material.
7. A steel-concrete composite beam structure according to claim 1, wherein: the transverse stiffening rib (8) is connected with the top surface of the upper flange plate (3) through welding or bolts.
8. A steel-concrete composite beam structure according to claim 5, wherein: the shear connector (5) is a stud connector, a PBL connector, an angle steel connector, a bent rib connector and a combination form thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920896707.3U CN210636679U (en) | 2019-06-14 | 2019-06-14 | Steel-concrete composite beam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920896707.3U CN210636679U (en) | 2019-06-14 | 2019-06-14 | Steel-concrete composite beam structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210636679U true CN210636679U (en) | 2020-05-29 |
Family
ID=70792246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920896707.3U Active CN210636679U (en) | 2019-06-14 | 2019-06-14 | Steel-concrete composite beam structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210636679U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359353A (en) * | 2019-06-14 | 2019-10-22 | 东南大学 | A kind of Steel-concrete Combined Beam Structures |
| CN114382002A (en) * | 2020-10-20 | 2022-04-22 | 华中科技大学 | Steel box-concrete composite beam inter-box beam connecting structure and construction method |
-
2019
- 2019-06-14 CN CN201920896707.3U patent/CN210636679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110359353A (en) * | 2019-06-14 | 2019-10-22 | 东南大学 | A kind of Steel-concrete Combined Beam Structures |
| CN114382002A (en) * | 2020-10-20 | 2022-04-22 | 华中科技大学 | Steel box-concrete composite beam inter-box beam connecting structure and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103758023B (en) | Prestressed concrete and steel truss mixed continuous rigid frame bridge and construction method thereof | |
| CN101597887A (en) | Novel combined bridge deck and preparation method thereof | |
| CN105862597B (en) | A kind of multiple-piece composite beam bridge top and the bottom monolithic construction construction method | |
| KR101208231B1 (en) | Method for constructing continuous supporting structure of corrugated steel web PSC beam | |
| CN101440598B (en) | Steel box-concrete combined box plate arch structure and construction method thereof | |
| CN210636679U (en) | Steel-concrete composite beam structure | |
| CN108316554A (en) | A kind of steel ripple crust and prestressed concrete combination beam and its construction method | |
| CN109024219B (en) | Prefabricated ultrahigh-performance concrete-common concrete combined beam bridge structure and construction method | |
| CN110331664B (en) | Steel-concrete mixed continuous box girder bridge deck joint structure and construction method thereof | |
| CN208717744U (en) | A kind of assembled steel reinforced concrete combination prefabricated bridge | |
| CN215629423U (en) | Profiled steel sheet laying structure suitable for support-free construction of steel-concrete composite beam bridge | |
| CN113356052A (en) | Novel steel bar truss superposed bridge deck and production method | |
| CN112982139A (en) | Wide-width large-span hybrid beam and short-tower cable-stayed bridge system and construction method thereof | |
| CN210086022U (en) | Assembled single-box multi-chamber corrugated steel web box girder | |
| CN110359353A (en) | A kind of Steel-concrete Combined Beam Structures | |
| CN203383137U (en) | Transversely assembled corrugated steel web combined box girder | |
| CN109594461A (en) | A kind of assembly steel-concrete combination beam and its forming method | |
| CN213539440U (en) | Assembled coincide floor | |
| CN112227216B (en) | Triangular area cable buckling and sling combined construction method for steel diagonal bracing continuous rigid frame bridge | |
| CN113106846A (en) | Assembled type reinforced concrete-filled steel tube composite beam and construction method thereof | |
| CN211897803U (en) | Continuous new structure of composite beam structure adopting UHPC beam-steel end plate with studs | |
| CN112627436A (en) | Truss type steel reinforced concrete Z-shaped column partially prefabricated and assembled | |
| WO2020134402A1 (en) | Structural steel, structural steel-uhpc composite slabs and bridge deck | |
| CN208668274U (en) | A kind of steel reinforced concrete composite beam bridge | |
| CN216893067U (en) | Assembled composite floor system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |