CN215758474U - Assembled steel bridge of U-shaped section steel box girder - Google Patents
Assembled steel bridge of U-shaped section steel box girder Download PDFInfo
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- CN215758474U CN215758474U CN202122240385.7U CN202122240385U CN215758474U CN 215758474 U CN215758474 U CN 215758474U CN 202122240385 U CN202122240385 U CN 202122240385U CN 215758474 U CN215758474 U CN 215758474U
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Abstract
The utility model discloses an assembled steel bridge of a U-shaped section steel box girder, which comprises a plurality of U-shaped steel box girders, wherein a transverse clapboard between the box girders is respectively and transversely connected between two adjacent U-shaped steel box girders, a transverse splicing plate is connected between the adjacent transverse clapboards between the box girders, each U-shaped steel box girder is respectively provided with a steel box girder upper flange plate, a plurality of upper flange steel shear nails are arranged on the steel box girder upper flange plate, and a plurality of U-shaped steel box girders are connected with a plurality of precast concrete bridge panels through the upper flange steel shear nails; the utility model has the advantages of reducing the welding amount of steel on the steel bridge construction site, shortening the construction period of the steel bridge and being easy to maintain the diaphragm plate.
Description
Technical Field
The utility model belongs to the technical field of bridge construction, and particularly relates to an assembled steel bridge of a steel box girder with a U-shaped section.
Background
The steel box girder, also called steel plate box girder, is a common structural form of a large-span bridge, and is called a steel box girder because the shape of the steel box girder is like a box. The bridge formed by the steel box girders is called a steel box girder bridge, and the steel box girder bridge is widely applied to highway bridges and urban bridges due to the characteristics of high strength, uniform material, good plastic toughness, light dead weight, no shrinkage and creep and the like.
China (CN201810420407.8) discloses a partially open steel beam with a function-partitioned design and a construction process thereof, which comprises a steel main beam and a closed steel box beam; the steel main beams are two, a plurality of opening section middle cross beams are arranged between the two steel main beams, a plurality of cantilever beams are arranged on the side wall of each steel main beam, a plurality of opening section in-box transverse partition plates are arranged in the steel main beams, and the steel main beams, the plurality of opening section in-box transverse partition plates and the plurality of opening section middle cross beams form an opening steel box girder; the closed steel box girder is positioned on the support and consists of a steel main girder, a closed sealing bottom plate and a closed part steel box web plate, a closed diaphragm plate is arranged in the steel main girder, and a closed diaphragm plate between two girders is arranged between the two steel main girders; orthotropic steel bridge deck plates are arranged on the two steel main beams. Set up two steel girders in this patent, be not suitable for the bridge floor too wide condition to the installation difficulty of steel bridge panel, welding mode can lead to the field weld volume big, influences the problem of engineering progress.
Traditional steel box girder bridge need divide the segmentation to weld when the construction, and the on-the-spot welding volume is big, and on-the-spot segmentation welding receives multiple factor to influence, and the welding seam quality is difficult to guarantee to steel box girder bridge's diaphragm is under long-term vehicle load, and fatigue stress amplitude is big, and long-term operation back diaphragm can appear fatigue damage, and above-mentioned factor is restraining the development of steel box girder bridge.
Therefore, a new technical scheme is provided, the structural form of the steel bridge is optimized, the welding quantity of steel on the construction site of the steel bridge is reduced, the construction period of the steel bridge is shortened, and the connection form of the diaphragm plates is improved, so that the diaphragm plates are replaceable, the safety of the bridge structure is guaranteed, and the bridge has important engineering significance.
Disclosure of Invention
The utility model aims to provide an assembled steel bridge of a U-shaped section steel beam box, which aims to reduce the welding amount of steel on the construction site of the steel bridge, shorten the construction period of the steel bridge, and improve the connection form of a diaphragm of the steel bridge, so that the diaphragm can be replaced, the fatigue problem of the diaphragm is avoided, and the assembled steel bridge with wide engineering application prospect is formed.
In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides an assembled steel bridge of U-shaped section steel box girder, includes a plurality of U-shaped steel box girders, adjacent two transversely be connected with the cross slab between the case roof beam between the U-shaped steel box girder respectively, adjacent be connected with horizontal splice plate, every between the cross slab between the case roof beam the U-shaped steel box girder is provided with steel box girder upper flange board respectively, be provided with a plurality of upper flange steel shear force nail on the steel box girder upper flange board, the U-shaped steel box girder is connected with precast concrete bridge panel through upper flange steel shear force nail.
In the scheme, the assembled steel bridge of the U-shaped section steel box girder comprises a plurality of U-shaped steel box girders, wherein the U-shaped steel box girders are arranged in parallel, adjacent two transverse partition plates between the U-shaped steel box girders are respectively and transversely connected between the U-shaped steel box girders, the transverse partition plates between the U-shaped steel box girders are generally fixedly connected with the U-shaped steel box girders, adjacent transverse splicing plates are connected between the transverse partition plates between the U-shaped steel box girders and are detachably connected, each U-shaped steel box girder is respectively provided with an upper flange plate of the steel box girder, a plurality of upper flange steel shear nails are arranged on the upper flange plate of the steel box girder, the U-shaped steel box girders are connected with a precast concrete bridge deck through the upper flange steel shear nails, and can be connected in a concrete pouring mode.
During construction, the U-shaped steel box girders and the concrete bridge deck are prefabricated in a factory at first, the U-shaped steel box girders and the concrete bridge deck are transported to a bridge location after the U-shaped steel box girders and the concrete bridge deck are manufactured, the U-shaped steel box girders are assembled and connected firstly, then the prefabricated concrete bridge deck is erected and installed on the assembled U-shaped steel box girders, bridge deck connecting joints and high-strength concrete in bridge deck shear nail grooves are poured, and finally bridge deck pavement and other auxiliary facilities are constructed.
Furthermore, the cross sectional shape of U-shaped steel box girder is upper portion open-ended U-shaped cross section, every U-shaped steel box girder includes steel box girder bottom plate, steel box girder bottom plate's both sides are provided with steel box girder web respectively, two the top surface of steel box girder web is provided with steel box girder upper flange board respectively, and every the welding has a plurality of on the steel box girder upper flange board go up flange steel shear force nail.
The cross section shape of U-shaped steel box girder is upper portion open-ended U-shaped cross section, and the upper portion opening saves the use amount of steel, alleviates the load of bridge floor direction, every U-shaped steel box girder includes steel box girder bottom plate, the both sides of steel box girder bottom plate are provided with the steel box girder web respectively, carry out the location and the installation of part, two the top surface of steel box girder web is provided with the support that the flange board carries out the top surface on the steel box girder respectively, and every the welding has a plurality of on the flange board on the steel box girder go up flange steel shear force nail, fixes a position and installs the decking through last flange steel shear force nail.
Furthermore, an indoor transverse partition plate is arranged between two steel box girder webs of each U-shaped steel box girder, and the distance between the indoor transverse partition plates of the box girder along the length direction of the bridge is 10-15 m.
The two steel box girder webs of the U-shaped steel box girder are provided with the box chamber transverse partition plate between the steel box girder webs to increase the strength of the steel box girder webs to prevent deformation, the box chamber transverse partition plate can be perforated to save materials, the distance between the box chamber transverse partition plate and the bridge along the length direction is 10m-15m, resources are not wasted excessively densely, and the strength of the structure can be ensured.
Furthermore, the included angle between the steel box girder web plate and the horizontal direction is 45-80 degrees.
The included angle between the steel box girder web plate and the horizontal direction is 45-80 degrees, so that the bearing range of the steel box girder web plate to the pressure in the horizontal direction is enhanced.
Furthermore, an upper flange connecting T-shaped steel plate is arranged between the upper flange plates of the two steel box girders of each U-shaped steel box girder, and the distance between the upper flange connecting T-shaped steel plates along the length direction of the bridge is 8-10 m.
Every be provided with the open structure at last flange connection T shape steel sheet cooperation top between two steel box girder upper limb listboards of U-shaped steel box girder, reduced the steel consumption of girder steel upper limb listboards by a wide margin, set up the stability that the structural strength and the top surface of U-shaped steel box girder were strengthened to last flange connection T shape steel sheet, the last flange is connected T shape steel sheet and is 8m-10m along bridge length direction's the interval that sets up, is unlikely to the too dense resource-wasting, also can guarantee the intensity and the stability of structure.
Furthermore, each upper flange connection T-shaped steel plate is formed by vertically welding a T-shaped steel plate web and a T-shaped steel plate top plate, a plurality of T-shaped steel plate holes are formed in the T-shaped steel plate top plate, and the upper flange connection T-shaped steel plate is connected with the upper flange plate of the steel box girder through an upper flange connection bolt.
Every T shape steel sheet is connected to top flange comprises a slice T shape steel sheet web and a slice T shape steel sheet roof vertically welding, and simple structure, stability are strong, it has a plurality of T shape steel sheet hole to open on the T shape steel sheet roof, top flange connect T shape steel sheet with connect through top flange connecting bolt between the steel box girder top flange board, it is fixed to carry out the connection of top flange connection T shape steel sheet through T shape steel sheet hole with top flange connecting bolt, is convenient for install and maintain.
Further, the outside of steel case web is provided with cross slab between the case roof beam, cross slab comprises cross slab riser and the welding of cross slab curb plate vertically between the case roof beam, it has a plurality of cross slab hole to open on the cross slab curb plate, cross slab is 10m-15m along bridge length direction's setting interval between the case roof beam, horizontal splice plate includes the splice plate curb plate, the both ends difference vertically welding of splice plate curb plate has the splice plate riser, it has a plurality of connecting plate hole to open on the splice plate riser, adjacent two cross slab between the case roof beam with two of horizontal splice plate connect through cross slab connecting bolt between the splice plate riser.
The transverse clapboard between the box girders is formed by welding a transverse clapboard vertical plate and a transverse clapboard side plate which are vertical, the transverse clapboard vertical plate is connected with the steel box girder web, a plurality of transverse clapboard holes are formed in the transverse clapboard side plate in a welding mode and are used for connecting transverse clapboard connecting bolts, the arrangement distance of the transverse clapboard between the box girders along the length direction of the bridge is 10m-15m, resources are not wasted too densely, the strength and the stability of the structure can be ensured, the transverse splice plate comprises a splice plate side plate, splice plate vertical plates are respectively and vertically welded at two ends of the splice plate side plate, a plurality of connecting plate holes are formed in the splice plate vertical plates and are used for connecting the transverse clapboard connecting bolts, and the transverse clapboard between two adjacent box girders and two splice plates of the transverse splice plate are connected through the transverse clapboard connecting bolts, the transverse splicing plates are convenient to disassemble and maintain.
Furthermore, be provided with a plurality of decking equipartition formula steel shear force nail on every side of precast concrete decking respectively, it has a plurality of decking shear force nail groove to open on the precast concrete decking, adjacent two be equipped with the decking joint seam between the precast concrete decking, pour the high-strength concrete in the decking joint seam.
Be provided with a plurality of decking equipartition formula steel shear force nails on every side of precast concrete decking respectively, set up decking equipartition formula steel shear force nail and strengthen the location to concrete decking horizontal direction and conveniently connect, it has a plurality of decking shear force nail groove to open on the precast concrete decking, is used for with last flange steel shear force nail cooperation installation, conveniently pours, adjacent two be equipped with the decking joint seam between the precast concrete decking, pour the high-strength concrete in the decking joint seam and carry out the connection between the precast concrete decking.
Compared with the prior art, the utility model has the following beneficial effects:
(1) by adopting a construction method of prefabrication and assembly, the used U-shaped steel box girder can be prefabricated and then conveyed to a bridge site for assembly and connection after the U-shaped steel box girder is manufactured, so that the welding quantity of steel on a steel bridge construction site is greatly reduced, and the construction period of the steel bridge is shortened;
(2) the connecting form of the diaphragm plates is improved, and the diaphragm plates are connected in a detachable bolt connection mode, so that the diaphragm plates can be replaced, and the problem that the diaphragm plates are fatigue and difficult to maintain is solved;
(3) the U-shaped steel box girders are U-shaped in cross section, the upper flange plates of the U-shaped steel box girders are not closed, and the upper flange plates of the two steel box girders are connected through the upper flange connecting T-shaped steel plates, so that the steel consumption of the upper flange plates of the steel girders is greatly reduced, the cost is reduced, and the waste is avoided;
(4) the bridge adopts precast concrete deck slab, and the U-shaped steel box girder can install precast concrete deck slab on the flange board on the steel box girder after assembling in the scene, and deck slab construction time shortens, and cast-in-place concrete pouring volume is little, raises the efficiency.
Drawings
FIG. 1 is a schematic perspective view of an assembled steel bridge of a U-shaped section steel beam box according to the present invention;
FIG. 2 is a schematic perspective view of a single U-shaped steel box girder according to the present invention;
FIG. 3 is a schematic cross-sectional view of an assembled steel bridge of a U-shaped section steel girder box according to the present invention;
FIG. 4 is a schematic connecting perspective view of a plurality of U-shaped steel box girders according to the present invention;
FIG. 5 is a schematic perspective view of the diaphragm between the box girders in the present invention;
FIG. 6 is a schematic perspective view of a transverse splice plate according to the present invention;
FIG. 7 is a schematic perspective view of the upper flange connecting T-shaped steel plate according to the present invention;
FIG. 8 is a schematic view of a connection three-dimensional structure of a transverse clapboard and a transverse splicing plate between box girders in the utility model;
FIG. 9 is a perspective view of a single precast concrete deck panel according to the present invention;
fig. 10 is a schematic connecting perspective view of a plurality of precast concrete deck boards according to the present invention.
In the drawings: 1. a U-shaped steel box girder; 11. a steel box girder web; 12. a steel box girder bottom plate; 13. a steel box girder upper flange plate; 13a, an upper flange steel shear pin; 14. the upper flange is connected with a T-shaped steel plate; 14a, a T-shaped steel plate hole; 14b, a T-shaped steel plate web; 14c, a T-shaped steel plate top plate; 15. a diaphragm plate in the box chamber; 16. an upper flange connecting bolt; 2. a diaphragm plate between the box girders; 21. a diaphragm plate vertical plate; 22. a diaphragm side plate; 22a, a diaphragm plate hole; 3. the diaphragm plate is connected with a bolt; 4. a transverse splice plate; 41. splicing plate side plates; 42. a splice plate vertical plate; 42a, a connecting plate hole; 5. prefabricating a concrete bridge deck; 51. a bridge deck shear pin slot; 52. bridge deck connection seams; 53. bridge deck equipartition formula steel shear force nail.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-10, an assembled steel bridge of U-shaped section steel box girder comprises a plurality of U-shaped steel box girders 1, two adjacent U-shaped steel box girders 1 are respectively and transversely connected with a box girder transverse partition plate 2, two adjacent box girder transverse partition plates 2 are connected with a transverse splice plate 4, each U-shaped steel box girder 1 is respectively provided with a steel box girder upper flange plate 13, a plurality of upper flange steel shear nails 13a are arranged on the steel box girder upper flange plate 13, and the U-shaped steel box girder 1 is connected with a precast concrete bridge deck 5 through the upper flange steel shear nails 13 a.
In the scheme, the assembled steel bridge of the U-shaped section steel box girder comprises a plurality of U-shaped steel box girders 1, wherein the U-shaped steel box girders 1 are arranged in parallel, adjacent two U-shaped steel box girders 1 are respectively and transversely connected with a box girder transverse partition plate 2, the box girder transverse partition plate 2 is generally fixedly connected with the U-shaped steel box girders 1, adjacent box girder transverse partition plates 2 are connected with a transverse splicing plate 4, the transverse splicing plate 4 is detachably connected with each other, each U-shaped steel box girder 1 is respectively provided with a steel box girder upper flange plate 13, a plurality of upper flange steel shear nails 13a are arranged on the steel box girder upper flange plate 13, and the U-shaped steel box girder 1 is connected with a precast concrete bridge deck 5 through the upper flange steel shear nails 13a and can be connected in a concrete pouring manner.
In a certain highway project, a bidirectional four-lane bridge with the width of 18m and the span of 40m needs to be newly built to cross an existing road below, the assembled steel bridge with the U-shaped section steel beam box provided by the utility model is adopted, four U-shaped steel beam boxes 1 are transversely arranged, the beam height of each U-shaped steel beam box 1 is 1.7m, the width of a steel box beam bottom plate 12 is 2m, an indoor transverse partition plate 15 is arranged between two steel box beam webs 11 of each U-shaped steel beam box 1, the arrangement distance of the indoor transverse partition plate 15 along the length direction of the bridge is 12m, an upper flange connecting T-shaped steel plate 14 is arranged between two steel box beam upper flange plates 13 of each U-shaped steel beam box beam 1, and the arrangement distance of the upper flange connecting T-shaped steel plate 14 along the length direction of the bridge is 10 m. The transverse partition plate 2 between two adjacent U-shaped steel box girders 1 is transversely connected through the box girders, the transverse splicing plates 4 are connected, the transverse partition plate 2 between the box girders is 12m along the setting interval of the length direction of the bridge, the full bridge is provided with four precast concrete bridge decks 5, the transverse bridge width of the single precast concrete bridge deck 5 is 8.6m, the longitudinal bridge length is 19.6m, the width of the bridge deck connecting seam 52 is 0.8m, the upper flange steel nails 13a are arranged on the upper flange plates 13 of the steel box girders of the U-shaped steel box girders 1, and the U-shaped steel box girders 1 are connected with the precast concrete bridge decks 5 through the upper flange steel nails 13 a. During construction, firstly, the U-shaped steel box girder 1 and the precast concrete deck slab 5 are manufactured in a factory, after the manufacture is finished, the U-shaped steel box girder 1 and the precast concrete deck slab 5 are conveyed to a bridge position, the U-shaped steel box girder 1 is assembled and connected, then the precast concrete deck slab 5 is erected and installed on the assembled U-shaped steel box girder 1, the bridge deck slab connecting seams 52 and high-strength concrete in the bridge deck slab shear nail grooves 51 are poured, and finally bridge deck pavement and other auxiliary facilities are constructed. The assembled steel bridge of U-shaped section steel girder box in this embodiment adopts the construction method of prefabricated assembly, monolithic U-shaped steel box girder is prefabricated in the mill, transport to the bridge position after the preparation is accomplished and assemble the connection, steel welding volume has reduced steel bridge construction site by a wide margin, steel bridge construction cycle has been shortened, adopt the construction method of prefabricated hoist and mount, can not cause the influence to the current of below road in the construction, and the connection form of cross slab has been improved, the cross slab adopts the mode of bolt to connect, make the cross slab removable, the difficult problem of maintaining after having avoided the fatigue damage of cross slab.
Further, the cross sectional shape of the U-shaped steel box girder 1 is a U-shaped cross section with an upper opening, every U-shaped steel box girder 1 comprises a steel box girder bottom plate 12, steel box girder webs 11 are respectively arranged on two sides of the steel box girder bottom plate 12, two steel box girder webs 11 are respectively arranged on the top surface of the steel box girder bottom plate 13, and a plurality of upper flange steel shear nails 13a are welded on the steel box girder upper flange plates 13.
The cross section shape of U-shaped steel case roof beam 1 is upper portion open-ended U-shaped cross section, and the upper portion opening saves the use amount of steel, alleviates the load of bridge floor direction, every U-shaped steel case roof beam 1 includes steel case roof beam bottom plate 12, the both sides of steel case roof beam bottom plate 12 are provided with steel case web 11 respectively, carry out the location and the installation of part, two the top surface of steel case web 11 is provided with steel case roof beam upper limb board 13 respectively and carries out the support of top surface, every the welding has a plurality of on the steel case roof beam upper limb board 13 go up the flange steel shear force nail 13a, fix a position and install the decking through upper limb steel shear force nail 13 a.
Furthermore, an inner box transverse partition plate 15 is arranged between two steel box girder webs 11 of each U-shaped steel box girder 1, and the distance between the inner box transverse partition plates 15 in the box chamber along the length direction of the bridge is 10-15 m.
Two of U-shaped steel box girder 1 be provided with indoor cross slab 15 of case between the steel box girder web 11, increase the intensity of steel box girder web 11 and prevent to warp, can trompil save material on the indoor cross slab 15 of case, the setting interval of indoor cross slab 15 of case along bridge length direction is 10m-15m, is unlikely to too close wasting of resources, also can guarantee the intensity of structure.
Furthermore, the included angle between the steel box girder web plate 11 and the horizontal direction is 45-80 degrees.
The angle between the steel box girder web plate 11 and the horizontal direction is 45-80 degrees, so that the bearing range of the steel box girder web plate 11 to the pressure in the horizontal direction is enhanced.
Furthermore, an upper flange connecting T-shaped steel plate 14 is arranged between the upper flange plates 13 of the two steel box girders of each U-shaped steel box girder 1, and the distance between the upper flange connecting T-shaped steel plate 14 and the length direction of the bridge is 8-10 m.
Every be provided with the open structure at the top that T shape steel sheet 14 cooperation top is connected to the upper limb between two steel box girder upper limb listboards 13 of U-shaped steel box girder 1, reduced the steel consumption of girder steel upper limb listboards by a wide margin, set up the stability that T shape steel sheet 14 is connected to the upper limb and strengthened U-shaped steel box girder 1's structural strength and top surface, the interval that sets up of T shape steel sheet 14 along bridge length direction is 8m-10m is connected to the upper limb, is unlikely to the too dense resource waste, also can guarantee the intensity and the stability of structure.
Furthermore, each upper flange connecting T-shaped steel plate 14 is formed by vertically welding a T-shaped steel plate web 14b and a T-shaped steel plate top plate 14c, a plurality of T-shaped steel plate holes 14a are formed in the T-shaped steel plate top plate 14c, and the upper flange connecting T-shaped steel plate 14 is connected with the steel box girder upper flange plate 13 through an upper flange connecting bolt 16.
Every go up the flange and connect T shape steel sheet 14 and form by a slice T shape steel sheet web 14b and the perpendicular welding of a slice T shape steel sheet roof 14c, simple structure, stability are strong, it has a plurality of T shape steel sheet hole 14a to open on the T shape steel sheet roof 14c, go up the flange and connect T shape steel sheet 14 with connect through last flange connecting bolt 16 between the steel box girder upper limb board 13, it is fixed to carry out the connection that upper limb connects T shape steel sheet 14 through T shape steel sheet hole 14a with upper limb connecting bolt 16, is convenient for installation and maintenance.
Further, the outside of steel box girder web 11 is provided with cross slab 2 between the case roof beam, cross slab 2 comprises cross slab riser 21 and the welding of cross slab curb plate 22 vertically between the case roof beam, it has a plurality of cross slab hole 22a to open on the cross slab curb plate 22, cross slab 2 is 10m-15m along bridge length direction's setting interval between the case roof beam, horizontal splice plate 4 includes splice plate curb plate 41, splice plate riser 42 is connected to the both ends difference vertically welding of splice plate curb plate 41, splice plate riser 42 is gone up to open has a plurality of connecting plate hole 42a, adjacent two cross slab 2 between the case roof beam with two of horizontal splice plate 4 connect through cross slab connecting bolt 3 between the splice plate riser 42.
The transverse clapboard 2 between the box girders is arranged on the outer side of the steel box girder web 11 to enhance the transverse stability, the transverse clapboard 2 between the box girders is formed by welding a transverse clapboard vertical plate 21 and a transverse clapboard lateral plate 22 which are vertical, the transverse clapboard vertical plate 21 is connected with the steel box girder web 11, a plurality of transverse clapboard holes 22a are arranged on the transverse clapboard lateral plate 22 in a welding mode and are used for connecting the transverse clapboard connecting bolts 3, the arrangement distance of the transverse clapboard 2 between the box girders along the length direction of the bridge is 10m-15m, resources are not wasted excessively densely, the strength and the stability of the structure can be ensured, the transverse splice plate 4 comprises a splice plate lateral plate 41, splice plate vertical plates 42 are respectively and vertically welded at the two ends of the splice plate lateral plate 41, a plurality of connecting plate holes 42a are arranged on the splice plate vertical plate 42 and are used for connecting the transverse clapboard connecting bolts 3, the transverse partition plate 2 between the adjacent two box girders and the transverse splicing plates 4 are connected through the transverse partition plate connecting bolts 3 between the splicing plate vertical plates 42, so that the transverse splicing plates 4 are conveniently detached and maintained.
Furthermore, be provided with a plurality of decking equipartition formula steel shear force nail 53 on every side of precast concrete decking 5 respectively, it has a plurality of decking shear force nail groove 51 to open on the precast concrete decking 5, adjacent two be equipped with decking joint seam 52 between the precast concrete decking 5, pour the high-strength concrete in the decking joint seam 52. In the illustrated embodiment, the deck plate shear pin slot 51 is rectangular.
Be provided with a plurality of decking equipartition formula steel shear force nails 53 on every side of precast concrete decking 5 respectively, set up decking equipartition formula steel shear force nails 53 and strengthen the location to concrete decking horizontal direction and conveniently connect, it has a plurality of decking shear force nail groove 51 to open on the precast concrete decking 5, is used for installing with last flange steel shear force nail 13a cooperation, conveniently pours, adjacent two be equipped with decking joint 52 between the precast concrete decking 5, pour among the decking joint 52 and have high-strength concrete to carry out the connection between the precast concrete decking 5.
Example 2
The assembled steel bridge of the U-shaped section steel box girder of the embodiment is further optimized on the basis of the embodiment 1:
further, in the embodiment, the deck plate shear pin groove 51 is circular, and may also be polygonal.
The bridge deck shear nail groove 51 is circular or polygonal, and the upper flange steel shear nails 13a are arranged corresponding to the shape of the bridge deck shear nail groove 51, so that the stress between the bridge deck shear nail groove 51 and the poured high-strength concrete is uniform in all directions.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an assembled steel bridge of U-shaped section steel box girder, its characterized in that, including a plurality of U-shaped steel box girders, adjacent two there is horizontal partition plate between the case roof beam between the horizontal connection respectively between the U-shaped steel box girder, adjacent be connected with horizontal splice plate, every between the case roof beam horizontal partition plate between the U-shaped steel box girder is provided with steel box girder upper flange board respectively, be provided with a plurality of upper flange steel shear force nail, a plurality of on the steel box girder upper flange board U-shaped steel box girder is through a plurality of precast concrete decking of upper flange steel shear force nail fixedly connected with.
2. The assembled steel bridge of the U-shaped section steel box girder of claim 1, wherein the cross section of the U-shaped steel box girder is in a U-shaped section with an upper opening, each U-shaped steel box girder comprises a steel box girder bottom plate, steel box girder webs are respectively arranged on two sides of the steel box girder bottom plate, the top surfaces of the two steel box girder webs are respectively provided with an upper flange plate of the steel box girder, and a plurality of upper flange steel shear nails are welded on each upper flange plate of the steel box girder.
3. The assembled steel bridge of the U-shaped section steel box girder of claim 2, wherein the steel box girder web plate is inclined at an angle of 45-80 ° to the horizontal direction.
4. The assembled steel bridge of the U-shaped section steel box girder of claim 1, wherein an inner box chamber diaphragm is arranged between two steel box girder webs of each U-shaped steel box girder, and the arrangement distance of the inner box chamber diaphragm along the length direction of the bridge girder is 10m-15 m.
5. The assembled steel bridge of U-shaped section steel box girders according to claim 1, wherein an upper flange connecting T-shaped steel plate is arranged between the upper flange plates of the two steel box girders of each U-shaped section steel box girder, and the distance between the upper flange connecting T-shaped steel plates along the length direction of the bridge is 8m-10 m.
6. The assembled steel bridge of the U-shaped section steel box girder of claim 1, wherein each upper flange connecting T-shaped steel plate is formed by vertically welding a T-shaped steel plate web and a T-shaped steel plate top plate, a plurality of T-shaped steel plate holes are formed in the T-shaped steel plate top plate, and the upper flange connecting T-shaped steel plate is connected with the upper flange plate of the steel box girder through an upper flange connecting bolt.
7. The assembled steel bridge of U-shaped section steel box girder of claim 1, characterized in that, the outside of steel box girder web is provided with diaphragm plate between the case roof beam, diaphragm plate comprises diaphragm plate riser and the perpendicular welding of diaphragm plate curb plate between the case roof beam, it has a plurality of diaphragm plate hole to open on the diaphragm plate curb plate, diaphragm plate is 10m-15m along bridge length direction's setting interval between the case roof beam, horizontal splice plate includes the splice plate curb plate, the both ends of splice plate curb plate respectively the perpendicular welding have the splice plate riser, it has a plurality of connecting plate hole to open on the splice plate riser, adjacent two diaphragm plate between the case roof beam with two of horizontal splice plate connect through the diaphragm connecting bolt between the splice plate riser.
8. The assembled steel bridge of the U-shaped section steel box girder according to claim 1, wherein a plurality of bridge deck uniform distribution type steel shear nails are respectively arranged on each side surface of the precast concrete bridge deck, a plurality of bridge deck shear nail grooves are formed in the precast concrete bridge deck, bridge deck connecting seams are arranged between two adjacent precast concrete bridge decks, and concrete is poured in the bridge deck connecting seams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122240385.7U CN215758474U (en) | 2021-09-15 | 2021-09-15 | Assembled steel bridge of U-shaped section steel box girder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122240385.7U CN215758474U (en) | 2021-09-15 | 2021-09-15 | Assembled steel bridge of U-shaped section steel box girder |
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| CN215758474U true CN215758474U (en) | 2022-02-08 |
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| CN202122240385.7U Active CN215758474U (en) | 2021-09-15 | 2021-09-15 | Assembled steel bridge of U-shaped section steel box girder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114790680A (en) * | 2022-05-11 | 2022-07-26 | 山东建筑大学 | Assembled steel box combination beam bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790680A (en) * | 2022-05-11 | 2022-07-26 | 山东建筑大学 | Assembled steel box combination beam bridge |
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