CN220246639U - Frame ground road bridge of steel-concrete combined structure under extremely heavy load traffic - Google Patents
Frame ground road bridge of steel-concrete combined structure under extremely heavy load traffic Download PDFInfo
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- CN220246639U CN220246639U CN202321671055.6U CN202321671055U CN220246639U CN 220246639 U CN220246639 U CN 220246639U CN 202321671055 U CN202321671055 U CN 202321671055U CN 220246639 U CN220246639 U CN 220246639U
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- 239000004567 concrete Substances 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 108
- 239000010959 steel Substances 0.000 claims abstract description 108
- 230000002787 reinforcement Effects 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000011150 reinforced concrete Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
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Abstract
A frame ground road bridge with a steel-concrete combined structure under extremely heavy traffic belongs to the technical field of bridge construction. The connecting structure comprises an H-shaped steel column and an end H-shaped steel beam welded with the H-shaped steel column, wherein the end H-shaped steel beam is bolted to two ends of the top plate H-shaped steel beam through high-strength bolts on connecting webs. And forming a reinforcement cage structure by using the closed stirrups, the main reinforcements and the distributed reinforcements, and forming a reinforced concrete combined frame tunnel bridge structure together with the poured concrete layer. The steel-concrete combined beam bridge is formed by integrally pouring the H-shaped steel beam and the reinforced concrete, so that the sections of the steel beam and the concrete slab are stressed together, and the bending resistance of the steel plate and the compressive property of the concrete are fully utilized to produce the combined beam bridge. The perfect combination of steel and concrete reduces the weight of the main girder, improves the bearing capacity and the ductility of the components, and greatly improves the earthquake resistance of the structure. Compared with the traditional steel bridge, the integral rigidity and stability of the bridge are improved, the section height is reduced, and the manufacturing cost is effectively reduced.
Description
Technical Field
The utility model belongs to the technical field of bridge construction, and particularly relates to a frame ground road bridge with a steel-concrete combined structure under extremely heavy load traffic.
Background
The tunnel bridge is developed with the increase of social economy and transportation. In the engineering of accelerating the traffic and transportation in China, the tunnel bridge plays an irreplaceable role.
The frame is the most used structural style in the tunnel bridge, and it comprises roof, bottom plate, sideboard, and each board is all rigid connection in the junction, forms the self balance of thrust. The bottom plate not only serves as a foundation of the whole structure, but also can bear external load at the same time, and has low bearing capacity requirement on the foundation and low compression and sedimentation requirements on soil. Compared with a prestressed concrete simply supported girder bridge with the same span, the common reinforced concrete single-span frame bridge has thinner top plate thickness.
However, with the continuous development of open-pit mining industry in China in recent years, the engineering construction scale of mining bridges is in a trend of continuous expansion, however, due to the fact that the load of mine cars is larger and larger, a few traditional tunnel bridge structures capable of bearing heavy-load vehicle traffic are caused, in the design, the section size is required to be larger and larger, the reinforcement rate is higher and the economy is poorer and worse. In order to ensure the safety and economy of transportation in mining areas, a technology capable of greatly improving the bearing capacity of a tunnel bridge is needed.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a frame ground road bridge with a steel-concrete combined structure under extremely heavy traffic.
The utility model adopts the technical scheme that: the frame ground road bridge of the steel-concrete combined structure under the extremely heavy traffic is technically characterized by comprising beam-column connecting members, wherein the beam-column connecting members are composed of H-shaped steel columns and end H-shaped steel beams welded at one end of the beam-column connecting members, and the end H-shaped steel beams are bolted at two ends of a top plate H-shaped steel beam through high-strength bolts on connecting webs;
sleeving a plurality of closed stirrups on the H-shaped steel beam of the top plate, binding and rolling main reinforcements at the top angles of the closed stirrups, and binding and rolling the top angles of the closed stirrups sleeved along the length direction of the H-shaped steel beam of the top plate with the main reinforcements respectively; the top angles of the closed stirrups are also bound and rolled with the distributed steel bars, the distributed steel bars are arranged along the width direction of each roof H-shaped steel beam, and the top angles of the closed stirrups positioned on different roof H-shaped steel beams along the width direction are bound and rolled with the distributed steel bars together to form a steel bar cage structure; the structure and the poured concrete layer form a steel-concrete combined frame tunnel bridge structure together.
In the scheme, the H-shaped steel beam of the top plate adopts H-shaped steel with equal height and equal width, and the H-shaped steel is formed by welding an upper flange, a lower flange and a web plate positioned between the upper flange and the lower flange.
In the scheme, shear nails are respectively arranged on the upper flange and the lower flange of the H-shaped steel beam of the top plate at equal intervals.
In the scheme, the end part H-shaped steel beam is formed by welding an upper flange, a lower flange and a web plate positioned between the upper flange and the lower flange.
In the scheme, the upper flange and the lower flange are respectively provided with the shear nails.
In the scheme, the H-shaped steel column is formed by welding an upper flange, a lower flange and a web plate positioned between the upper flange and the lower flange.
In the scheme, the H-shaped steel column is provided with the stiffening rib, the stiffening rib is positioned between the upper flange and the lower flange, and the bottom of the stiffening rib is flush with the upper flange or the lower flange of the end part H-shaped steel beam to be used for reinforcing the joint of the H-shaped steel column and the end part H-shaped steel beam.
The beneficial effects of the utility model are as follows: the utility model provides a steel-concrete composite structure's frame ground road bridge under extremely heavy load traffic, includes H shaped steel post and rather than welded tip H shaped steel girder, and tip H shaped steel girder passes through the high strength bolt on the connecting web and articulates at roof H shaped steel girder's both ends. And forming a reinforcement cage structure by using the closed stirrups, the main reinforcements and the distributed reinforcements, and forming a reinforced concrete combined frame tunnel bridge structure together with the poured concrete layer. The H-shaped steel beam and reinforced concrete are integrally poured to form the reinforced concrete combined beam bridge, so that the sections of the steel beam and the concrete slab are stressed together, and the tensile property of the steel plate and the compressive property of the concrete are fully utilized to produce the combined beam bridge. Compared with the traditional reinforced concrete bridge, the perfect combination of the steel and the concrete reduces the weight of the main girder, improves the bearing capacity and the ductility of the components, and greatly improves the earthquake resistance of the structure. Compared with the traditional steel bridge, the integral rigidity and stability of the bridge are improved, the steel consumption is reduced, and the manufacturing cost is effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic view of section A-A of the present utility model;
FIG. 3 is a schematic view of the H-beam frame structure of the present utility model;
FIG. 4 is a schematic view of a beam-column connection structure of the present utility model;
FIG. 5 is an enlarged schematic view of a portion B of the present utility model;
FIG. 6 is an enlarged side view of part B of the present utility model;
the serial numbers in the figures illustrate: 1-a beam column connecting member; 101-H-shaped steel column; 102-end H-shaped steel beams; 103-stiffening ribs; 2-roof H-shaped steel beams; 3-connecting webs; 4-high-strength bolts; 5-reinforcement cage; 501-main tendons; 502-distributing steel bars; 503-closing stirrups; 6-shearing force nails; 7-concrete layer.
Description of the embodiments
The foregoing objects, features, and advantages of the utility model will be more readily apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings 1-6 and detailed description.
As shown in fig. 1 to 3, the frame ground bridge applicable to the steel-concrete composite structure under extremely heavy load traffic, which is adopted in the embodiment, comprises a beam-column connecting member 1, a roof H-shaped steel beam 2, a connecting web 3 with high-strength bolts 4, a reinforcement cage 5 and a concrete layer 7.
The beam column connecting member 1 of the present embodiment is composed of an H-shaped steel column 101 and an end H-shaped steel beam 102 welded to one end thereof, the H-shaped steel column 101 being slightly larger in size than the end H-shaped steel beam 102, as shown in fig. 4. The H-shaped steel column 101 and the end H-shaped steel beam 102 are formed by welding an upper flange, a lower flange and a web plate positioned between the upper flange and the lower flange, and the lower flange of the H-shaped steel column 101 is welded with the end H-shaped steel beam 102. In order to strengthen the support of the connection between the H-shaped steel column 101 and the end portion H-shaped steel beam 102, in this embodiment, two stiffening ribs 103 are further added between the upper flange and the lower flange of the H-shaped steel column 101, wherein one stiffening rib 103 is located at the connection between the upper flange of the end portion H-shaped steel beam 102 and the H-shaped steel column 101, and the other stiffening rib 103 is located at the connection between the lower flange of the end portion H-shaped steel beam 102 and the H-shaped steel column 101.
In the embodiment, the shearing nails 6 are arranged at equal intervals on the upper flange and the lower flange of the H-shaped steel column 101 and the upper flange and the lower flange of the end part H-shaped steel beam 102 respectively, and the concrete and the section steel can be stressed cooperatively through the shearing nails 6, so that the relative sliding is avoided.
The top H-shaped steel beam 2 and the end H-shaped steel beam 102 of the embodiment are formed by mixing and splicing flange welded web plates with high-strength bolts, and the concrete structure is as follows: the end H-beam 102 is bolted to the two ends of the roof H-beam 2 by high strength bolts 4 on the connecting webs 3. The roof H-shaped steel beam 2 adopts H-shaped steel with equal height and equal width, and the H-shaped steel is formed by welding an upper flange, a lower flange and a web plate positioned between the upper flange and the lower flange.
In this embodiment, the reinforcement cage 5 is built up by the main reinforcement 501, the distributed reinforcement 502 and the closed stirrup 503. The number of the main ribs 501 is plural. In this embodiment, two main ribs 501 are located at the upper portion of the closed stirrup 503, and two main ribs 501 are located at the lower portion of the closed stirrup 503. A plurality of closed stirrups 503 are sleeved on the roof H-shaped steel beam 2, the main stirrups 501 are bound and rolled at the vertex angles of the closed stirrups 503, the main stirrups 501 are arranged along the length direction of the roof H-shaped steel beam 2 and are parallel to the roof H-shaped steel beam 2, and the vertex angles of the closed stirrups sleeved on the same roof H-shaped steel beam 2 are respectively bound and rolled together with the main stirrups 501. The top angles of the closed stirrups 503 are also bound and rolled with the distributed steel bars 502, the distributed steel bars 502 are arranged along the width direction of each roof H-shaped steel beam 2, and the top angles of the closed stirrups positioned on different roof H-shaped steel beams 2 along the width direction are also respectively bound and rolled with the distributed steel bars 502, so that a steel reinforcement cage 5 structure is formed; the above construction forms a steel-concrete combined frame tunnel bridge structure together with the concrete layer 7.
The number of the upper main ribs and the number of the lower main ribs in the embodiment can be multiple, so that the bearing capacity can be improved, and the formed reinforcement cage 5 is more stable; in practical implementation, the specific number is required to be determined according to the stress condition of the beam in practical engineering.
As shown in fig. 5 to 6, the complete construction flow of the present utility model is: firstly, a groove is dug, a bottom layer is arranged, then a layer of concrete cushion layer is poured, then reinforcement bar binding is carried out, an inner mold and an outer mold are supported, the lower half parts of a bottom plate and a side wall are poured, then a beam column connecting member and a roof H-shaped steel beam are installed, high-strength bolts are used for bolting, then reinforcement bars of the side wall and main reinforcement bars and distribution reinforcement bars of the roof of the upper half part are bound, an inner mold and an outer mold are supported, and the side wall half parts and the roof are poured. And (5) removing the form when the concrete reaches the strength required by the design, and simultaneously backfilling the soil at the two sides of the ground bridge.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. The frame ground bridge of the steel-concrete combined structure under the extremely heavy traffic is characterized by comprising beam-column connecting members (1), wherein the beam-column connecting members (1) are composed of H-shaped steel columns (101) and end H-shaped steel beams (102) welded at one end of the H-shaped steel columns, and the end H-shaped steel beams (102) are bolted at two ends of a roof H-shaped steel beam (2) through high-strength bolts (4) on connecting webs (3);
a plurality of closed stirrups (503) are sleeved on the roof H-shaped steel beam (2), main stirrups (501) are bound and rolled at the top angles of the closed stirrups (503), and the top angles of the closed stirrups sleeved along the length direction of the roof H-shaped steel beam (2) are respectively bound and rolled with the main stirrups (501); the top angles of the closed stirrups (503) are also bound and rolled with the distributed steel bars (502), the distributed steel bars (502) are arranged along the width direction of each roof H-shaped steel beam (2), and the top angles of the closed stirrups positioned on different roof H-shaped steel beams (2) along the width direction are bound and rolled with the distributed steel bars (502) together to form a steel bar cage (5) structure; the beam column connecting component (1), the roof H-shaped steel beam (2) and the steel reinforcement cage (5) structure arranged on the roof H-shaped steel beam (2) form a steel-concrete combined frame tunnel bridge structure together with the concrete layer (7).
2. The frame ground bridge of a combined structure of extremely heavy traffic lower steel and concrete according to claim 1, wherein the top plate H-shaped steel beam (2) is made of H-shaped steel with equal height and equal width by welding an upper flange, a lower flange and a web plate positioned between the upper flange and the lower flange.
3. The frame ground bridge of the extremely heavy load traffic lower steel-concrete combined structure according to claim 2, wherein shear nails (6) are respectively arranged on the upper flange and the lower flange of the roof H-shaped steel beam (2) at equal intervals.
4. A frame bridge of a very heavy duty traffic underbody steel concrete composite structure as claimed in claim 1 wherein said end H-beam (102) is welded by upper and lower flanges and webs therebetween.
5. A frame bridge of a very heavy traffic down-mix construction according to claim 4, characterized in that shear studs (6) are provided on the upper and lower flanges, respectively.
6. The frame ground bridge of a very heavy traffic underbody steel concrete composite structure according to claim 1, wherein said H-beam (101) is welded by upper flanges, lower flanges and webs therebetween.
7. The frame ground bridge of a combined structure of a heavy load traffic lower steel and concrete according to claim 6, wherein a stiffening rib (103) is arranged on the H-shaped steel column (101), the stiffening rib (103) is positioned between the upper flange and the lower flange, and the bottom of the stiffening rib is flush with the upper flange or the lower flange of the end H-shaped steel beam (102) for reinforcing the joint of the H-shaped steel column (101) and the end H-shaped steel beam (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321671055.6U CN220246639U (en) | 2023-06-29 | 2023-06-29 | Frame ground road bridge of steel-concrete combined structure under extremely heavy load traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321671055.6U CN220246639U (en) | 2023-06-29 | 2023-06-29 | Frame ground road bridge of steel-concrete combined structure under extremely heavy load traffic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220246639U true CN220246639U (en) | 2023-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321671055.6U Active CN220246639U (en) | 2023-06-29 | 2023-06-29 | Frame ground road bridge of steel-concrete combined structure under extremely heavy load traffic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220246639U (en) |
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2023
- 2023-06-29 CN CN202321671055.6U patent/CN220246639U/en active Active
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