CN214737294U - Improved steel box girder structure - Google Patents
Improved steel box girder structure Download PDFInfo
- Publication number
- CN214737294U CN214737294U CN202120345202.5U CN202120345202U CN214737294U CN 214737294 U CN214737294 U CN 214737294U CN 202120345202 U CN202120345202 U CN 202120345202U CN 214737294 U CN214737294 U CN 214737294U
- Authority
- CN
- China
- Prior art keywords
- steel box
- box girder
- fixedly connected
- main body
- top plate
- 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
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses an improved steel box girder structure, which relates to the technical field of steel box girders and comprises a main body of the steel box girder, wherein a top plate is fixedly connected with the upper part of the main body, a bottom plate is fixedly connected with the lower part of the main body, the cross section of the main body is a rectangle with an upper and a lower parts, two isosceles trapezoids are arranged in the middle, two shorter top edges of the trapezoids are mutually connected, an inner cavity for reducing the weight of the steel box girder is arranged in the main body, a web plate and a supporting plate for supporting the top plate are fixedly connected in the inner cavity, a supporting column for stabilizing the integral structure of the steel box girder is fixedly arranged in the inner cavity, a first rib column for preventing the deformation of the top plate is fixedly connected with the lower part of the top plate, a second rib column for preventing the deformation of the bottom plate is fixedly connected with the upper part of the bottom plate, and the problem that when a plurality of heavy vehicles get on the bridge simultaneously is solved, because the heavy vehicles are positioned on the right lane and the steel box girder is wide at the top and narrow at the bottom, easily tilt the bridge deck.
Description
Technical Field
The utility model relates to a steel case roof beam technical field specifically is an improvement type steel case roof beam structure.
Background
The steel box girder is called steel plate box girder, is a common structural form of large span bridge, is generally used on a bridge with larger span, is called steel box girder because of the appearance like a box, a plurality of steel box girders are spliced to form a bridge body, the cross section of the existing steel box girder is a relatively flat inverted trapezoid, a bridge column is positioned below the trapezoid, large goods and large passengers are required to run on the right slow lane of the road because of the limitation of laws and regulations, when a plurality of heavy vehicles simultaneously go up the bridge, the steel box girder is positioned on the right lane, and the upper part of the steel box girder is wide and the lower part of the steel box girder is narrow, so that the bridge floor is easy to incline.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an improvement type steel box girder construction to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: an improved steel box girder structure comprises a main body of a steel box girder, wherein a top plate is fixedly connected above the main body, a bottom plate is fixedly connected below the main body, the cross section of the main body is a rectangle, the middle of the main body is two isosceles trapezoids, and the shorter top edges of the two trapezoids are connected with each other;
an inner cavity for reducing the weight of the steel box girder is formed in the main body, two webs and two support plates for supporting the top plate are fixedly connected in the inner cavity, the two webs are located on two sides of the inner cavity, the support plates are located in the middle of the inner cavity, the upper ends of the webs and the upper ends of the support plates are fixedly connected below the top plate, and the lower ends of the webs and the lower ends of the support plates are fixedly connected above the bottom plate;
the inside fixed mounting of inner chamber has the support column that is used for firm steel box girder overall structure, the support column sets up the rice style of calligraphy structure that a plurality of cylinders constitute, the upper end fixed connection of support column is in the below of roof, the lower extreme fixed connection of support column is in the top of bottom plate, the support column passes web and two backup pads, the support column sets up to a plurality ofly.
Preferably, a first rib column for preventing the top plate from deforming is fixedly connected to the lower portion of the top plate, and the first rib column is provided in plurality.
Preferably, a plurality of second rib columns for preventing the bottom plate from deforming are fixedly connected above the bottom plate.
Preferably, the two sides of the main body are fixedly connected with a plurality of first side wing plates for enhancing the structural strength of the main body.
Preferably, the two sides of the main body are fixedly connected with second side wing plates which are used for strengthening and supporting the top plate, the second side wing plates are arranged in a plurality of modes, and the second side wing plates and the first side wing plates are arranged in a staggered mode.
Preferably, the top plate and the bottom plate are provided with a plurality of first through holes for connecting the plurality of steel box girders to lengthen the steel box girders, and the first through holes are provided in plurality.
Preferably, one side of the top plate is provided with a plurality of second through holes for connecting the plurality of steel box girders to widen the steel box girders.
Preferably, the two sides of the connecting part of the main body and the top plate are fixedly connected with first trusses for reinforcing the steel box girder structure.
Preferably, the two sides of the connecting part of the main body and the bottom plate are fixedly connected with second trusses for reinforcing the support of the steel box girder.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses, rectangle about being through the main part cross section, the centre is two isosceles trapezoid, two trapezoidal shorter topside interconnect, the inner chamber that alleviates steel box girder weight is seted up to the inside of main part, the inside fixed mounting of inner chamber has the support column that is used for firm steel box girder overall structure, the support column gets up the roof support, make the gravity of whole roof can both transmit the bottom plate on, solved when a plurality of heavier vehicles are put on the bridge simultaneously, because be located right lane simultaneously, and the steel box girder is wide narrow down, make the problem of bridge floor slope easily.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic sectional view of the front view of the present invention;
FIG. 3 is a schematic side view of the present invention;
fig. 4 is a schematic side view of the cross-sectional structure of the present invention.
In the figure: 1. a main body; 2. a top plate; 21. a first rib post; 3. a base plate; 31. a second rib post; 4. an inner cavity; 5. a web; 51. a support plate; 6. a support pillar; 7. a first side wing plate; 8. a second wing plate; 9. a first through hole; 91. a second through hole; 10. a first truss; 11. a second spar.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Referring to fig. 1-4, the present embodiment provides an improved steel box girder structure, which includes a main body 1 of the steel box girder, a top plate 2 fixedly connected to an upper portion of the main body 1, and a bottom plate 3 fixedly connected to a lower portion of the main body 1.
The top plate 2 and the main body 1, and the main body 1 and the bottom plate 3 are connected by an all-welding method, so that the connection stability is ensured.
In order to prevent the steel box girder from inclining due to the overweight of one side, the cross section of the main body 1 is a vertical rectangle, the middle part of the main body is two isosceles trapezoids, and the shorter top edges of the two trapezoids are connected with each other.
When a vehicle passes above the steel box girder, the gravity of the vehicle above is transmitted to the middle narrow part of the main body 1 and then is uniformly transmitted to the lower part of the main body 1 through the narrow part.
The inner cavity 4 for reducing the weight of the steel box girder is formed in the main body 1, and the inner cavity 4 formed in the main body 1 can also reduce building materials, so that the materials are utilized to the maximum extent while the overall stability is not damaged.
In order to better support the top plate 2 after the inner cavity 4 is opened, a web 5 and a support plate 51 for supporting the top plate 2 are fixedly connected inside the inner cavity 4.
The webs 5 are arranged in two, and the two webs 5 are positioned on two sides of the inner cavity 4, support the top plate 2 and can transmit the weight to the bottom plate 3.
The support plate 51 is located in the middle of the cavity 4, and the width of the support plate 51 is about twice that of the web 5 because the force is larger in the middle.
For the convenience of supporting the top plate 2, the upper ends of the web plate 5 and the supporting plate 51 are fixedly connected below the top plate 2, the lower ends of the web plate 5 and the supporting plate 51 are fixedly connected above the bottom plate 3, and the weight can be transmitted to the bottom plate 3 while the top plate 2 is supported.
Because the bridge body can generate downward bending deformation when a vehicle passes above the steel box girder, the web 5 and the support plate 51 can also increase the compression resistance of the steel box girder.
In order to increase the integral structure of the steel box girder, a supporting column 6 for stabilizing the integral structure of the steel box girder is fixedly arranged in the inner cavity 4.
The structure of the shape like the Chinese character 'mi', the top plate 2, the bottom plate 3, the web 5 and the supporting plate 51 form a plurality of triangles, and the triangles have stability, so that the overall structure of the steel box girder is greatly increased.
In order to be able to mount the support column 6 well, the support column 6 passes through the web 5 and the two support plates 51.
The support columns 6 are preferably made of reinforced concrete, but not limited to reinforced concrete, as long as they have high compression resistance, are not easy to corrode, and can have large tensile stress.
In order to increase the supporting points of the supporting columns 6, the supporting columns 6 are arranged in a plurality and are uniformly arranged and installed inside the inner cavity 4.
In order to further increase the compressive property of steel box girder, prevent that roof 2 from appearing compression deformation, the below fixedly connected with of roof 2 prevents the first rib post 21 that roof 2 warp.
In order to further make the top plate 2 not easy to deform, the first rib posts 21 are provided in plurality and are uniformly distributed, arranged and fixedly installed below the top plate 2.
In order to further increase the compression resistance of the steel box girder and prevent the bottom plate 3 from being deformed under pressure, the second rib columns 31 for preventing the bottom plate 3 from being deformed are fixedly connected above the bottom plate 3.
In order to further make the bottom plate 3 less prone to deformation, a plurality of second rib posts 31 are arranged and fixed above the bottom plate 3 in a uniformly distributed manner.
The first rib post 21 is preferably a U-shaped stiffener, and the second rib post 31 is preferably a plate rib, which can greatly increase the compression resistance of the steel box girder.
Of course, the steel box girder is not limited to the U-shaped stiffening rib and the plate rib, and can be provided with a Y-shaped rib, a V-shaped rib, a flat-bulb-shaped rib, an L-shaped rib, an inverted T-shaped rib and the like, as long as the steel box girder can be prevented from being deformed under pressure, the technology is mainly used for bridge construction, and is the prior art.
In order to reinforce the structural strength of the main body 1, first side wings 7 for reinforcing the structural strength of the main body 1 are fixedly connected to both sides of the main body 1.
As shown in figures 1-2, the first side wing plate 7 is located at two sides of the cross section of the main body 1 at the joint of the two trapezoids, the first side wing plate 7 is of a triangular structure and is just clamped at two sides of the main body 1, and the triangle has stability, so that the connection of the upper structure and the lower structure of the main body 1 is further enhanced.
In order to make the upper and lower structural connection of the main body 1 better, the first side wing plate 7 is provided in a plurality of numbers, and is uniformly arranged and fixed on both sides of the main body 1.
To further support the top plate 2, a second side wing plate 8 for reinforcing the top plate 2 is fixedly connected to both sides of the main body 1 near the top plate 2.
As shown in fig. 1-2, the second side wing plate 8 is located on both sides of the inverted trapezoid above the cross section of the main body 1, and supports the upper side of the main body 1, further enhancing the support of the top plate 2.
In order to make the second side wing plate 8 support the top plate 2 better, the second side wing plate 8 is provided in a plurality of and evenly distributed, and the second side wing plate 8 and the first side wing plate 7 are arranged in a staggered manner.
The first side wing plate 7 and the second side wing plate 8 can also be used for weakening strong wind blowing to the steel box girder, and the steel box girder is ensured not to shake due to wind power when being installed on the bridge column.
The first rib column 21, the second rib column 31, the first side wing plate 7 and the second side wing plate 8 are welded on the steel box girder by adopting an all-welding method.
One side of the top plate 2 is provided with a plurality of second through holes 91 for connecting a plurality of steel box girders to widen the steel box girders, and the second through holes 91 are arranged in a plurality for better connecting the steel box girders with the side steel box girders.
The first through hole 9 and the second through hole 91 are used for penetrating through a steel bar or a steel cable, the first through hole 9 of the steel box girder is aligned with the first through hole 9 of the connected steel box girder, or the second through hole 91 is aligned with the second through hole 91, the steel bar or the steel cable penetrating through the first through hole 9 or the second through hole 91 of the steel box girder is welded with the steel bar or the steel cable of the connected steel box girder, and the two steel box girders are fixedly connected.
In order to further strengthen the structure of the steel box girder, the two sides of the connection part of the main body 1 and the top plate 2 are fixedly connected with a first truss girder 10 for strengthening the structure of the steel box girder.
In order to further strengthen the support of the steel box girder pair above, the two sides of the connecting part of the main body 1 and the bottom plate 3 are fixedly connected with second trussed girders 11 for strengthening the support of the steel box girder.
As shown in fig. 4, the first girder 10 and the second girder 11 are rectangular structures formed by a plurality of i-shaped steels, and a plurality of triangles are formed between the rectangles by i-shaped steels, and the triangles have stability, so that the stability and the support of the steel box girder are enhanced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an improvement type steel box girder structure, includes main part (1) of steel box girder, the top fixedly connected with roof (2) of main part (1), the below fixedly connected with bottom plate (3) of main part (1), its characterized in that: the cross section of the main body (1) is rectangular up and down, the middle part of the main body is two isosceles trapezoids, and the shorter top edges of the two trapezoids are connected with each other;
an inner cavity (4) for reducing the weight of the steel box girder is formed in the main body (1), two webs (5) and two supporting plates (51) for supporting the top plate (2) are fixedly connected to the inner cavity (4), the two webs (5) are located on two sides of the inner cavity (4), the supporting plates (51) are located in the middle of the inner cavity (4), the upper ends of the webs (5) and the supporting plates (51) are fixedly connected to the lower portion of the top plate (2), and the lower ends of the webs (5) and the supporting plates (51) are fixedly connected to the upper portion of the bottom plate (3);
inner chamber (4) inside fixed mounting has support column (6) that are used for firm steel box girder overall structure, support column (6) set up the rice style of calligraphy structure that a plurality of cylinders constitute, the upper end fixed connection of support column (6) is in the below of roof (2), the lower extreme fixed connection of support column (6) is in the top of bottom plate (3), web (5) and two backup pads (51) are passed in support column (6), support column (6) set up to a plurality ofly.
2. An improved steel box girder structure according to claim 1, characterized in that: the lower part of the top plate (2) is fixedly connected with a first rib column (21) for preventing the deformation of the top plate (2), and the first rib columns (21) are arranged in a plurality.
3. An improved steel box girder structure according to claim 2, characterized in that: the upper part of the bottom plate (3) is fixedly connected with a second rib column (31) for preventing the bottom plate (3) from deforming, and the second rib columns (31) are arranged in a plurality.
4. An improved steel box girder structure according to claim 1, characterized in that: the both sides fixedly connected with of main part (1) is used for strengthening first flank board (7) of main part (1) structural strength, first flank board (7) set up to a plurality ofly.
5. An improved steel box girder structure according to claim 4, characterized in that: the both sides of main part (1) are close to roof (2) fixedly connected with and are used for strengthening second flank board (8) that support roof (2), second flank board (8) set up to a plurality ofly, second flank board (8) and first flank board (7) crisscross setting.
6. An improved steel box girder structure according to claim 2, characterized in that: the top plate (2) and the bottom plate (3) are provided with a plurality of first through holes (9) used for connecting a plurality of steel box girders to lengthen the steel box girders, and the first through holes (9) are arranged in a plurality.
7. An improved steel box girder structure according to claim 6, characterized in that: and one side of the top plate (2) is provided with a plurality of second through holes (91) for connecting a plurality of steel box girders to widen the steel box girders, and the second through holes (91) are arranged in a plurality.
8. An improved steel box girder structure according to claim 7, characterized in that: the steel box girder is characterized in that two sides of the connecting part of the main body (1) and the top plate (2) are fixedly connected with a first truss girder (10) used for reinforcing the steel box girder structure.
9. An improved steel box girder structure according to claim 8, characterized in that: and the two sides of the connecting part of the main body (1) and the bottom plate (3) are fixedly connected with second trussed beams (11) for reinforcing the support of the steel box girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120345202.5U CN214737294U (en) | 2021-02-07 | 2021-02-07 | Improved steel box girder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120345202.5U CN214737294U (en) | 2021-02-07 | 2021-02-07 | Improved steel box girder structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214737294U true CN214737294U (en) | 2021-11-16 |
Family
ID=78644833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120345202.5U Active CN214737294U (en) | 2021-02-07 | 2021-02-07 | Improved steel box girder structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214737294U (en) |
-
2021
- 2021-02-07 CN CN202120345202.5U patent/CN214737294U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101603288B (en) | Three-truss main girder structure of highway and railway bi-purpose cable-stayed bridge and installation method thereof | |
| KR101065633B1 (en) | Prestressed steel tubular truss beam by external prestressing method | |
| JPH0733644B2 (en) | Bridge composed of deck and elements supporting the deck, particularly long-span cable-stayed bridge, and construction method thereof | |
| CN207958956U (en) | A kind of assembly steel-concrete combination beam | |
| CN214737294U (en) | Improved steel box girder structure | |
| CN111827079A (en) | Combined beam bridge with cantilever arms for highway and railway dual-purpose box girders | |
| CN213869065U (en) | Connection structure for concrete building layer-adding reconstruction | |
| CN214329275U (en) | Connecting node structure of continuous box type crane beam and lattice type column | |
| CN109594461A (en) | A kind of assembly steel-concrete combination beam and its forming method | |
| CN210596965U (en) | Medium-low speed magnetic levitation double-line continuous whole-hole big box girder | |
| CN209941494U (en) | Truss for resisting wind of bridge | |
| CN112127265B (en) | Steel diagonal bracing continuous rigid frame bridge | |
| CN214117236U (en) | Steel beam web plate opening reinforcing structure adopting longitudinal reinforcement | |
| CN213232980U (en) | Suspension type monorail girder | |
| CN213868292U (en) | Shaped steel post and arched girder connection structure | |
| CN220353094U (en) | Y shaped steel roof beam construction connection structure | |
| CN211596444U (en) | Flexible connection truss | |
| CN220080274U (en) | Cantilever truss structure | |
| CN220247585U (en) | Aluminum alloy load beam | |
| CN214573279U (en) | Combined bridge structure | |
| CN115287998B (en) | Special-shaped cable-stayed bridge structure and construction method thereof | |
| CN214005367U (en) | Steel box composite beam bridge structure with truss brace rod | |
| CN218520872U (en) | Bent cap hoist device | |
| CN220908166U (en) | Combined compression bar structure based on ultra-wide box girder construction matching | |
| CN212925729U (en) | Combined beam bridge with cantilever arms for highway and railway dual-purpose box girders |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |