CN218147756U - Corrugated steel web plate combined box girder - Google Patents
Corrugated steel web plate combined box girder Download PDFInfo
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- CN218147756U CN218147756U CN202222522474.5U CN202222522474U CN218147756U CN 218147756 U CN218147756 U CN 218147756U CN 202222522474 U CN202222522474 U CN 202222522474U CN 218147756 U CN218147756 U CN 218147756U
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Abstract
The utility model discloses a corrugated steel web plate combined box girder, which comprises a box girder body consisting of a horizontal bottom plate, corrugated steel web plates and a cast-in-place concrete bridge deck plate, wherein the corrugated steel web plates are symmetrically arranged and are respectively positioned at the left side and the right side of the horizontal bottom plate, and the horizontal bottom plate and the two corrugated steel web plates are integrally molded by pressing steel plates; the cast-in-place concrete bridge deck is transversely erected on the two corrugated steel web plates, and the upper edges of the corrugated steel web plates are provided with connecting frames embedded in the cast-in-place concrete bridge deck; the middle part of the box girder body box chamber between the two corrugated steel webs is provided with a longitudinal partition plate, the upper edge of the longitudinal partition plate is provided with a flange plate for jacking the cast-in-place concrete bridge deck plate, and welding nails embedded in the cast-in-place concrete bridge deck plate are densely distributed on the flange plate. The utility model discloses the advantage lies in reducing and using concrete material to bear the pulling force, overcomes the structural defect that the too early fracture of concrete arouses, reduces welding seam quantity, avoids the too early problem that appears the structure fatigue that arouses because of the welding seam, performance reduction, reduces the concrete volume.
Description
Technical Field
The utility model belongs to the technical field of the bridge engineering technique and specifically relates to a bottom plate and web integrated into one piece's wave form steel web combination case roof beam is related to.
Background
The corrugated steel web plate combined box girder has wide application due to excellent mechanical properties, has better shear strength and out-of-plane stability and smaller axial compression rigidity, and has outstanding advantages in reducing the dead weight of the box girder and improving the prestress efficiency.
The existing corrugated steel web plate combined box girder is formed by encircling a cast-in-place concrete bridge deck plate and a cast-in-place concrete bridge floor plate which are arranged in parallel, and a left corrugated steel web plate and a right corrugated steel web plate which are arranged between the cast-in-place concrete bridge deck plate and the cast-in-place concrete bridge floor plate. However, in the normal use process, the cast-in-place concrete bridge deck slab and the cast-in-place concrete bridge bottom plate bear the bending moment, the side with the bending moment under tension is still borne by the concrete material, and the characteristics of compression resistance and non-tensile resistance of the concrete material are not met, so that the cast-in-place concrete bridge bottom plate of the traditional corrugated steel web plate combined box girder is easy to crack prematurely under the action of the bending moment, and the structural bearing capacity, rigidity, integrity and durability are reduced; meanwhile, the left and right corrugated steel webs, the cast-in-place concrete bridge deck slab and the cast-in-place concrete bridge floor slab are connected through shear connectors, so that a plurality of welding lines are formed, the welding lines become important factors for reducing fatigue strength, once fatigue damage occurs, the bearing capacity and ductility of the structure are reduced, and the service performance of the structure is seriously influenced.
Disclosure of Invention
An object of the utility model is to provide a corrugated steel web combination case roof beam.
In order to achieve the above purpose, the utility model can adopt the following technical proposal:
the utility model discloses a wave form steel web combination case roof beam, include the case roof beam body that comprises horizontal bottom plate, wave form steel web and cast in situ concrete decking, wave form steel web is two that the symmetry set up, is located respectively the left and right sides of horizontal bottom plate, horizontal bottom plate and two wave form steel webs are steel sheet integrated compression molding; the cast-in-place concrete bridge deck is transversely erected on the two corrugated steel webs, and the upper edges of the corrugated steel webs are provided with connecting frames embedded in the cast-in-place concrete bridge deck; the middle part of a box girder body box chamber between two corrugated steel webs is provided with a longitudinal partition plate, the upper edge of the longitudinal partition plate is provided with a jacking flange plate of the cast-in-place concrete bridge deck plate, and welding nails embedded in the cast-in-place concrete bridge deck plate are densely distributed on the flange plate.
The utility model has the advantages that compared with the traditional corrugated steel web plate combined box girder, the horizontal bottom plate formed by the integral compression molding of the steel plate and the corrugated steel web plates on the two sides can reduce the use of concrete materials to bear the pulling force, thereby overcoming the structural defect caused by the premature cracking of the concrete of the traditional corrugated steel web plate combined box girder, and the integral molding of the horizontal bottom plate and the corrugated steel web plates on the two sides can also greatly reduce the number of welding seams, thereby avoiding the problems of structural fatigue and performance reduction caused by the welding seams; in addition, cast-in-place concrete is not used as a bottom plate, so that the consumption of concrete can be reduced, the dead weight and the dead load are reduced, and the engineering quantity is reduced.
Further, wave form steel web is close to go up along the evenly spaced apart one row of location perforation that is equipped with of length direction, the link includes the one-to-one wear to locate each one row of transverse connection pole in the location perforation, transverse connection pole's axial with the width direction of case roof beam body is unanimous, and the in bank sets up be provided with on the transverse connection pole a pair of paste respectively in the longitudinal tie pole of the wave form steel web left and right sides, the axis of longitudinal tie pole with the transverse connection pole axis is perpendicular. The stability of being connected along on can promoting cast in situ concrete decking and the wave form steel web makes the more stable crossbearer of cast in situ concrete decking on two wave form steel webs.
Furthermore, the box girder bodies are arranged in two groups side by side, and the corrugated steel webs on the adjacent sides of the two box girder bodies are connected into a whole through inter-box transverse connection; specifically, the inter-box transverse connection comprises a lower chord member which is transversely erected between two adjacent corrugated steel web plates along the width direction of the box girder body, two ends of the lower chord member are fixedly connected to the two corrugated steel web plates through first steel plate connecting pieces respectively, a pair of inclined web members which incline upwards towards two sides are fixedly connected to the center of the top surface of the lower chord member respectively, and the upper ends of the inclined web members are fixedly connected with the corrugated steel web plates through second steel plate connecting pieces; specifically, lower chord member and oblique web member all can link firmly as an organic wholely through a plurality of bolted connection spare by a pair of U-shaped channel-section steel that sets up in opposite directions to promote lower chord member and oblique web member and support intensity, here simultaneously, first steel sheet connecting piece can directly the clamping at two U-shaped channel-section steel tip that constitute lower chord member, and second steel sheet connecting piece then can the clamping at two U-shaped channel-section steel slope upper ends that constitute oblique web member.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the box girder body of fig. 1 with a cast-in-place concrete deck slab hidden.
Fig. 3 is a partially enlarged view of the connection bracket of fig. 2.
Fig. 4 is a schematic view of the cross-linking structure between the tanks in fig. 1.
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 of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
As shown in figure 1, the corrugated steel web combination box girder of the utility model comprises a box girder body which is composed of a horizontal bottom plate 1, a corrugated steel web 2 and a cast-in-place concrete bridge deck 3.
The corrugated steel webs 2 are symmetrically arranged and are respectively positioned on the left side and the right side of the horizontal bottom plate 1; specifically, the horizontal bottom plate 1 and the two corrugated steel webs 2 are integrally formed by compression molding of a steel plate, the thickness of the steel plate is 9mm, the compression molding parameters of the corrugated steel webs 2 on the two sides adopt 1600-section steel web size parameters, the horizontal bottom plate 1 and the corrugated steel webs 2 on the two sides are bent and formed by a stamping method, the bending angle is 90 degrees, the bending corner radius is 15 times (namely 135 mm) of the thickness of the steel plate, the length of the formed horizontal bottom plate 1 is 2600mm, and the height of the corrugated steel webs 2 is 1860mm; compared with the traditional corrugated steel web plate combined box girder, cast-in-place concrete is not adopted as a bottom plate, the consumption of the concrete can be reduced, the dead weight and the dead load are reduced, the engineering quantity is reduced, the use of concrete materials for bearing tensile force can be reduced, the structural defect caused by premature cracking of the concrete of the traditional corrugated steel web plate combined box girder is overcome, the number of welding seams is reduced, and the problems of structural fatigue and performance reduction caused by premature cracking of the welding seams are avoided.
3 crossbearers of cast in situ concrete decking are on two wave form steel web 2, for promoting cast in situ concrete decking 3 and two wave form steel web 2 go up the joint strength on edge, are provided with on wave form steel web 2 along burying the link of burying underground in cast in situ concrete decking 3. Specifically, as shown in fig. 2 and 3, a row of positioning through holes 4 are uniformly arranged at intervals along the length direction at the position, close to the upper edge, of the corrugated steel web 2, the aperture of each positioning through hole 4 is 60mm, the distance between every two adjacent positioning through holes 4 is 220-230mm, and the minimum distance between the upper edge of each hole and the upper edge of the corrugated steel web 2 is 30mm; at the moment, the connecting frame comprises a row of transverse connecting rods 5 which penetrate through each positioning through hole 4 in a one-to-one correspondence manner, the axial direction of each transverse connecting rod 5 is consistent with the width direction of the box girder body, a pair of longitudinal connecting rods 6 which are respectively fixedly attached to the left side and the right side of the corrugated steel web 2 are erected on the transverse connecting rods 5 arranged in a row, the axis of each longitudinal connecting rod 6 is perpendicular to the axis of each transverse connecting rod 5, the joint parts of the longitudinal connecting rods 6 and each transverse connecting rod 5 are fixedly connected by welding, and the joint parts of the longitudinal connecting rods 6 and the corrugated steel web 2 are fixedly connected by welding; at this moment, the connecting frame consisting of the transverse connecting rods 5 and the longitudinal connecting rods 6 is buried in the cast-in-place concrete bridge deck slab 3, namely, when the cast-in-place concrete bridge deck slab 3 is cast in place, the upper edges of the two corrugated steel web plates 2 are buried in the cast-in-place concrete bridge deck slab 3 by 150mm, and the connecting frame and the positioning through holes 4 are both positioned on the corrugated steel web plates 2 within the height of 150mm, so that the connecting frame is cast in the cast-in-place concrete bridge deck slab 3 together, the stability of connection between the upper edges of the cast-in-place concrete bridge deck slab 3 and the corrugated steel web plates 2 can be improved, and the cast-in-place concrete bridge deck slab 3 is more stably erected on the two corrugated steel web plates 2.
For further promotion whole case roof beam body's the intensity of supporting, still set up vertical baffle 7 in the middle part of the case room of the case roof beam body between two wave form steel web 2, vertical baffle 7's thickness is 9mm, and its shape is unanimous with the case room longitudinal profile shape of case roof beam body, and the relative medial surface of two wave form steel web 2 is welded along laminating perpendicularly to vertical baffle 7 about, and the base of vertical baffle 7 is welded on the upper surface of horizontal floor 1 along laminating perpendicularly. In addition, as shown in fig. 2, a flange plate 8 for jacking the cast-in-place concrete deck slab 3 is further arranged on the upper edge of the longitudinal partition plate 7, the width of the flange plate 8 is 150mm, the thickness of the flange plate 8 is 16mm, the flange plate is welded and fixed on the upper edge of the longitudinal partition plate 7, the upper surface of the flange plate 8 can be matched with and attached to the lower surface of the cast-in-place concrete deck slab 3, meanwhile, welding nails 9 embedded in the cast-in-place concrete deck slab 3 are densely distributed on the flange plate 8, the height of the welding nails is 150mm, the distance between adjacent welding nails 9 in the transverse bridge direction is 100mm, and the distance between adjacent welding nails 9 in the longitudinal bridge direction is 80mm; the steadiness of being connected between utilize the welding nail 9 to strengthen between flange board 8 and the cast in situ concrete decking 3, and then effectual promotion is to the bearing capacity of cast in situ concrete decking 3.
In addition, when in actual pavement, the common box girder bodies are arranged in two groups side by side, and the corrugated steel webs 2 on the adjacent sides of the two box girder bodies are connected into a whole through the transverse connection between the boxes; specifically, as shown in fig. 4, the inter-box transverse connection comprises a lower chord 10 transversely erected between two adjacent corrugated steel web plates 2 along the width direction of the box girder body, two ends of the lower chord 10 are fixedly connected to the lower parts of the two corrugated steel web plates 2 through first steel plate connectors 11 respectively, a pair of diagonal web members 12 which incline upwards towards two sides are fixedly connected to the center of the top surface of the lower chord 10, and the upper ends of the diagonal web members 12 are fixedly connected with the upper parts of the corrugated steel web plates 2 through second steel plate connectors 13; the lower chord 10 and the diagonal web members 12 can be fixedly connected into a whole by a pair of oppositely arranged U-shaped channel steel with the specification of 160 × 60 × 8mm through a plurality of bolt connecting pieces, so that the supporting strength of the lower chord 10 and the diagonal web members 12 is improved, meanwhile, the thicknesses of the two first steel plate connecting pieces 11 and the two second steel plate connecting pieces 13 are 20mm, the first steel plate connecting pieces 11 are directly clamped and fixed at the end parts of the two U-shaped channel steel forming the lower chord 10 (namely, two ends of the lower chord 10 are respectively and fixedly clamped with one first steel plate connecting piece 11, the bolt connecting pieces penetrate through the first steel plate connecting pieces 11), and the second steel plate connecting pieces 13 are directly clamped and fixed at the inclined upper ends of the two U-shaped channel steel forming the diagonal web members 12 (namely, the inclined upper end of each diagonal web member 12 is fixedly clamped with one second steel plate connecting piece 13, and the bolt connecting pieces penetrate through the second steel plate connecting pieces 13); at this moment, the two first steel plate connecting pieces 11 and the two second steel plate connecting pieces 13 are fixedly connected with the welding of the wave-shaped steel web plate 2 corresponding to the side respectively, so that two sets of box girder bodies which are arranged side by side can be connected through cross connection between boxes, and the supporting strength and the use durability of the bridge consisting of the wave-shaped steel web plate combined box girder are improved.
Claims (4)
1. The utility model provides a wave form steel web combination box girder, includes the box girder body that comprises horizontal bottom plate, wave form steel web and cast in situ concrete decking, its characterized in that: the two corrugated steel webs are symmetrically arranged and are respectively positioned at the left side and the right side of the horizontal bottom plate, and the horizontal bottom plate and the two corrugated steel webs are integrally formed by compression molding of steel plates; the cast-in-place concrete bridge deck is transversely erected on the two corrugated steel webs, and the upper edges of the corrugated steel webs are provided with connecting frames embedded in the cast-in-place concrete bridge deck; the middle part of a box girder body box chamber between two corrugated steel webs is provided with a longitudinal partition plate, the upper edge of the longitudinal partition plate is provided with a jacking flange plate of the cast-in-place concrete bridge deck plate, and welding nails embedded in the cast-in-place concrete bridge deck plate are densely distributed on the flange plate.
2. The corrugated steel web composite box beam of claim 1, wherein: the utility model discloses a corrugated steel web, including wave form steel web, the even spaced apart one row of location perforation that is equipped with of length direction is followed to the department of being close to of wave form steel web, the link includes the one-to-one wears to locate each one row of transverse connection pole in the location perforation, transverse connection pole's axial with the width direction of case roof beam body is unanimous, and the row sets up be provided with on the transverse connection pole a pair of paste respectively admittedly in the longitudinal tie rod of wave form steel web left and right sides, the axis of longitudinal tie rod with the transverse connection pole axis is perpendicular.
3. The corrugated steel web composite box beam of claim 1, wherein: the box girder bodies are two groups arranged side by side, and the corrugated steel webs on the adjacent sides of the two box girder bodies are connected into a whole through inter-box cross connection.
4. The corrugated steel web composite box beam of claim 3, wherein: the cross-linking between the case includes along box girder body width direction crossbearer in adjacent two lower chord between the wave form steel web, the both ends of lower chord link firmly in two respectively through first steel sheet connecting piece on the wave form steel web, the top surface center department of lower chord link firmly a pair of oblique web member ascending to both sides slope respectively, the upper end of oblique web member pass through the second steel sheet connecting piece with the wave form steel web links firmly mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222522474.5U CN218147756U (en) | 2022-09-23 | 2022-09-23 | Corrugated steel web plate combined box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222522474.5U CN218147756U (en) | 2022-09-23 | 2022-09-23 | Corrugated steel web plate combined box girder |
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| Publication Number | Publication Date |
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| CN218147756U true CN218147756U (en) | 2022-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222522474.5U Active CN218147756U (en) | 2022-09-23 | 2022-09-23 | Corrugated steel web plate combined box girder |
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- 2022-09-23 CN CN202222522474.5U patent/CN218147756U/en active Active
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