Novel steel-concrete composite beam bridge deck slab structure and construction support construction method thereof

Abstract

The invention relates to the field of bridge accessories, in particular to a novel steel-concrete composite beam bridge deck slab structure and a construction supporting construction method.The novel steel-concrete composite beam bridge deck slab structure comprises a steel main beam and an integrated bridge deck slab, the integrated bridge deck slab is formed in the range of an upper flange of the steel main beam in a cast-in-place mode, and a bolt column is fixed to the position of a web of the steel main beam through welding; the outer portion of the bolt column is sleeved with a base assembly, the upper portion of the base assembly is connected with a transverse steel pipe fixing assembly, the lower portion of the transverse steel pipe fixing assembly is provided with an inclined steel pipe fixing assembly, and the bottom end of the base assembly is provided with a fixing assembly adjusting part. The top end of the fixing assembly adjusting part abuts against the bottom of the inclined steel pipe fixing assembly, the inclined steel pipe and the transverse steel pipe are connected through the transverse connecting rod to form a stable supporting structure, and the mode is simple in installation, free of floor stand operation and simple in follow-up dismantling.

Description

Technical Field

[0001] This invention relates to the field of bridge accessories, specifically to a novel steel-concrete composite beam bridge deck structure and its construction support method. Background Technology

[0002] In existing bridge construction, the bridge deck is usually designed with the pedestrian walkway flush with the roadway. To achieve separation of pedestrians and vehicles, non-load-bearing components such as masonry blocks and granite are often used to raise the pedestrian walkway. However, these components do not participate in the structural load and only serve as functional isolation, resulting in low structural utilization and significant material waste. In addition, there is also the practice of directly setting up crash barriers to separate the pedestrian walkway from the roadway, but this fails to incorporate the pedestrian walkway structure into the overall load-bearing system, making it difficult to improve the bending resistance of the composite beam.

[0003] The pouring of concrete for bridge decks relies on temporary formwork and support systems. Currently, the main methods used are welded support seats, external cantilever scaffolding, and full-span scaffolding. Welded support seats are easy to erect but damage the steel beams and are difficult to dismantle. External cantilever scaffolding has limited stability and poses significant safety hazards for high-altitude operations. Stiffening rib ground-mounted scaffolding is complex to operate and can damage the integrity of the stiffening ribs. Full-span scaffolding is safe but occupies a large area and is difficult to use for elevated bridges crossing rivers and roads. Therefore, a new type of steel-concrete composite beam bridge deck structure and its construction support method are proposed. Summary of the Invention

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a novel steel-concrete composite beam bridge deck structure and its construction support method.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a novel steel-concrete composite beam bridge deck structure, comprising a steel main beam and an integrated bridge deck, wherein the integrated bridge deck is formed in place on the upper flange of the steel main beam by cast-in-place method, and the two sides of the integrated bridge deck are used as pedestrian walkways, and both sides of the integrated bridge deck are provided with crash barriers and pedestrian guardrails. A bolt is fixed to the web of the steel main beam by welding, and a base assembly is fitted on the outside of the bolt. A transverse steel pipe fixing assembly is connected to the lower part of the base assembly, and an inclined steel pipe fixing assembly is provided on the top of the base assembly. An adjusting part of the fixing assembly is provided in the middle of the base assembly, and the top of the adjusting part of the fixing assembly abuts against the bottom of the inclined steel pipe fixing assembly.

[0006] Preferably, the base assembly includes a base plate, a bolt hole, and a connecting sleeve. The bolt hole is located at the lower part of the base plate, and the base plate is fitted onto the outside of the bolt through the bolt hole. The connecting sleeve is welded to the upper surface of the base plate and communicates with the bolt hole.

[0007] Preferably, the transverse steel pipe fixing assembly includes a collar, a connecting plate, a steel pipe hole, and a fixing nut. The collar is fitted outside the bolt hole, the connecting plate is welded to the middle position of the collar surface, the steel pipe hole is opened at the middle position of the connecting plate, and the fixing nut is set in the middle of the connecting plate and threadedly connected to the bolt.

[0008] Preferably, the collar and the connecting sleeve have the same thickness, and the fixing nut abuts against both the connecting sleeve and the collar.

[0009] Preferably, the inclined steel pipe fixing assembly includes a connecting seat, a rotating support plate, and an auxiliary support plate. The connecting seat is welded to the top surface of the base plate, the rotating support plate is installed inside the connecting seat via a rotating shaft, and the auxiliary support plate is installed on top of the rotating support plate via a rotating shaft.

[0010] Preferably, the inclined steel pipe fixing assembly further includes auxiliary connecting grooves. The top two sides of the rotating support plate are provided with auxiliary connecting grooves. The inner wall of the auxiliary connecting groove is arc-shaped. The auxiliary connecting grooves cooperate with the rotating support plate and the auxiliary support plate to form a steel pipe support part.

[0011] Preferably, the rotating support plate has a slot at the top center position for fixing with the auxiliary support plate, and the width of the slot is the same as the width of the auxiliary support plate.

[0012] Preferably, the fixing component adjustment part includes a screw hole, an auxiliary support ring, and an adjustment bolt. The screw hole is located at the middle position of the base plate, the auxiliary support ring is welded to the middle position of the base plate, the auxiliary support ring is connected to the screw hole, and the adjustment bolt is threaded into the screw hole.

[0013] Preferably, the top of the adjusting bolt is rounded, and the surface of the rotating support plate is provided with an arc-shaped groove that mates with the adjusting bolt.

[0014] A method for using a novel steel-concrete composite beam bridge deck structure includes the following steps:

[0015] Step S1: Weld several sets of bolts at a certain interval to the same height position of the web of the steel main beam;

[0016] Step S2: Install the base plate outside the bolt, put the connecting plate on the outside of the connecting sleeve, and connect the fixing nut to the bolt thread. The fixing nut also presses and fixes the collar and the connecting sleeve, so that the base plate is stably attached to the surface of the bridge side wall, and the collar and the connecting plate welded to the collar are stably attached to the surface of the base plate.

[0017] Step S3: Pass the steel pipe through the steel pipe holes opened on each set of connecting plates in sequence, and keep the steel pipe horizontal under the support of the steel pipe holes;

[0018] Step S4: Rotate the adjusting bolt so that the adjusting bolt moves down along the screw hole through the threaded connection with the screw hole, and the support plate pushed by the adjusting bolt flips down;

[0019] Step S5: When the rotation angle of the support plate reaches the setting requirement of the inclined steel pipe, rotate the auxiliary support plate. The auxiliary support plate changes from a state that is flat relative to the rotating support plate to a state that is perpendicular to the rotating support plate. In the vertical state, the rotating support plate moves downward along the rotating axis and is embedded in the slot. In this state, the auxiliary support plate is restricted by the rotating support plate and can no longer rotate around the rotating axis. The auxiliary connecting slot cooperates with the rotating support plate and the auxiliary support plate to form the steel pipe support part.

[0020] Step S6: Insert the end of the steel pipe into the steel pipe support part, at which time the steel pipe is supported by the steel pipe support part;

[0021] Step S7: Connect the combined formwork to the steel pipe. With the support of the steel pipe, the combined formwork is kept in a fixed position. At this time, the bridge deck template is laid on top of the combined formwork. The height of the bridge deck template is higher than that of the integrated bridge deck. Concrete is poured into the bridge deck template. After the concrete solidifies, a pedestrian walkway structure connected to the integrated bridge deck is formed.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention includes a bolt, a base assembly, a transverse steel pipe fixing assembly, an oblique steel pipe fixing assembly, and a fixing assembly adjustment part. The top of the fixing assembly adjustment part abuts against the bottom of the oblique steel pipe fixing assembly. The transverse steel pipe fixing assembly is used for the transverse insertion of the steel pipe, and the oblique steel pipe is used for the oblique steel pipe. A stable support structure can be formed by connecting the oblique steel pipe and the transverse steel pipe through the transverse connecting rod. This method is simple to install, requires no ground support, occupies little space, and does not damage the bridge structure since only the bolt needs to be welded. Subsequent dismantling is also simple.

[0024] 2. In this invention, a pedestrian walkway structure connected to the integrated bridge deck is formed by pouring concrete into the bridge deck template, thus incorporating the pedestrian walkway structure into the overall load-bearing system, improving the bending resistance of the composite beam, eliminating traditional non-load-bearing lifting components, realizing the integration of the bridge deck structure and functional zoning, and simplifying the construction process and subsequent maintenance.

[0025] 3. The present invention also includes a fixing component adjustment part. The adjusting bolt adjusts the setting position in the auxiliary support ring through the threaded connection with the auxiliary support ring. When the adjusting bolt moves vertically upward, the support plate rotates upward and flips. When the adjusting bolt moves vertically downward, the support plate rotates downward and flips. This facilitates the adjustment of the setting position of the inclined steel pipe.

[0026] 4. In this invention, the base components are prefabricated in the factory, avoiding on-site damage to the main beam structure and anti-corrosion layer, thus ensuring the long-term service performance of the structure. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the three-dimensional combined structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0030] Figure 4 This is a schematic diagram of the unfolded structure of the transverse steel pipe fixing assembly of the present invention;

[0031] Figure 5 This is a schematic diagram of the rotating support plate structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the movable angle range of the present invention;

[0033] Figure 7 This is a schematic diagram of the integrated bridge deck structure of the present invention.

[0034] The numbers in the diagram represent:

[0035] 1. Bolt post; 2. Base assembly; 21. Base plate; 22. Bolt hole; 23. Connecting sleeve; 3. Horizontal steel pipe fixing assembly; 31. Collar; 32. Connecting plate; 33. Steel pipe hole; 34. Fixing nut; 4. Diagonal steel pipe fixing assembly; 41. Connecting seat; 42. Rotating support plate; 43. Auxiliary support plate; 44. Auxiliary connecting groove; 5. Fixing assembly adjustment part; 51. Screw hole; 52. Auxiliary support ring; 53. Adjusting bolt. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments, which illustrate the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.

[0037] Example:

[0038] like Figures 1-7As shown, the present invention provides a novel steel-concrete composite beam bridge deck structure, including a steel main beam and an integrated bridge deck. The integrated bridge deck is formed in place on the upper flange of the steel main beam by cast-in-place. The two sides of the integrated bridge deck are used as pedestrian walkways. Both sides of the integrated bridge deck are equipped with crash barriers and pedestrian guardrails. A bolt 1 is welded and fixed at the web of the steel main beam. A base assembly 2 is sleeved on the outside of the bolt 1. A transverse steel pipe fixing assembly 3 is connected to the lower part of the base assembly 2. An inclined steel pipe fixing assembly 4 is provided at the top of the base assembly 2. A fixing assembly adjustment part 5 is provided in the middle of the base assembly 2. The top of the fixing assembly adjustment part 5 abuts against the bottom of the inclined steel pipe fixing assembly 4.

[0039] The base assembly 2 includes a base plate 21, a bolt hole 22, and a connecting sleeve 23;

[0040] Bolt hole 22 is opened at the lower part of base plate 21. Base plate 21 is sleeved on the outside of bolt post 1 through bolt hole 22. Connecting sleeve 23 is welded to the upper surface of base plate 21 and the connecting sleeve 23 communicates with bolt hole 22. Connecting sleeve 23, together with transverse steel pipe fixing component 3, fixes base plate 21 to the surface of bridge side wall. Base plate 21 serves as the installation support point for transverse steel pipe fixing component 3 and diagonal steel pipe fixing component 4.

[0041] The transverse steel pipe fixing assembly 3 includes a collar 31, a connecting plate 32, a steel pipe hole 33, and a fixing nut 34;

[0042] The collar 31 is fitted onto the outside of the bolt hole 22. The connecting plate 32 is welded to the middle position of the collar 31. The steel pipe hole 33 is opened in the middle position of the connecting plate 32. The fixing nut 34 is set in the middle of the connecting plate 32 and threadedly connected to the bolt 1. The collar 31 and the connecting sleeve 23 have the same thickness. The fixing nut 34 abuts against both the connecting sleeve 23 and the collar 31. When the fixing nut 34 is threadedly connected to the bolt 1, the fixing nut 34 can simultaneously press and fix the collar 31 and the connecting sleeve 23, so that the base plate 21 can be stably attached to the surface of the bridge side wall, and the collar 31 and the connecting plate 32 welded to the collar 31 can be stably attached to the surface of the base plate 21. After the setting position of the connecting plate 32 is fixed, the steel pipe hole 33 in the middle of the connecting plate 32 can be used for the insertion and installation of the steel pipe. At this time, the steel pipe can be used as the lower support point.

[0043] The inclined steel pipe fixing assembly 4 includes a connecting seat 41, a rotating support plate 42, and an auxiliary support plate 43;

[0044] The connecting seat 41 is welded to the top surface of the base plate 21. The rotating support plate 42 is installed inside the connecting seat 41 through a rotating shaft. The auxiliary support plate 43 is installed on the top of the rotating support plate 42 through a rotating shaft. The top two sides of the rotating support plate 42 are provided with auxiliary connecting grooves 44. The inner wall of the auxiliary connecting groove 44 is arc-shaped. The auxiliary connecting groove 44, together with the rotating support plate 42 and the auxiliary support plate 43, forms a steel pipe support part. When connecting the inclined steel pipe, the steel pipe can be directly inserted into the steel pipe support part. The steel pipe support part can play a supporting role for the steel pipe. The inclined steel pipe can be set up without connecting the inclined steel pipe to the horizontal steel pipe through connecting parts.

[0045] A slot is provided at the top center of the rotating support plate 42 to be fixed with the auxiliary support plate 43. The width of the slot is the same as the width of the auxiliary support plate 43. When the auxiliary support plate 43 is rotated, it changes from a state that is parallel to the rotating support plate 42 to a state that is perpendicular to the rotating support plate 42. In the perpendicular state, the rotating support plate 42 can move downward along the rotating axis and be embedded in the slot. In this state, the auxiliary support plate 43 is restricted by the rotating support plate 42 and can no longer rotate around the rotating axis. In this state, when the auxiliary support plate 43 cooperates with the rotating support plate 42 to support the end of the steel pipe, it will not rotate synchronously with the rotation of the steel pipe, so as to better support the steel pipe.

[0046] The fixing component adjustment part 5 includes a screw hole 51, an auxiliary support ring 52, and an adjustment bolt 53;

[0047] The screw hole 51 is located in the middle of the base plate 21. The auxiliary support ring 52 is welded to the middle of the base plate 21 and is connected to the screw hole 51. The adjusting bolt 53 is threaded into the screw hole 51. When adjusting the setting angle of the rotating support plate 42, the adjusting bolt 53 is rotated first. The adjusting bolt 53 adjusts its setting position in the auxiliary support ring 52 through the threaded connection with the auxiliary support ring 52. When the adjusting bolt 53 moves vertically upward, the rotating support plate 42 flips upward. When the adjusting bolt 53 moves vertically downward, the rotating support plate 42 flips downward.

[0048] The top of the adjusting bolt 53 is rounded, and the surface of the rotating support plate 42 is provided with an arc-shaped groove that matches the adjusting bolt 53. Through the design of the arc-shaped groove, the adjusting bolt 53 can increase the contact area with the rotating support plate 42, thereby better supporting the rotating support plate 42 and making the rotating support plate 42 more stable.

[0049] The method of using the new type of steel-concrete composite beam cast-in-place bridge deck support structure includes the following steps:

[0050] Step S1: Weld several sets of bolts 1 at a certain interval to the same height position of the web of the steel main beam;

[0051] In step S2, the base plate 21 is installed outside the bolt 1, the connecting plate 32 is sleeved on the outside of the connecting sleeve 23, and the fixing nut 34 is threaded to the bolt 1. The fixing nut 34 simultaneously presses and fixes the collar 31 and the connecting sleeve 23, so that the base plate 21 is stably attached to the surface of the bridge side wall, and the collar 31 and the connecting plate 32 welded to the collar 31 are stably attached to the surface of the base plate 21.

[0052] Step S3: Pass the steel pipe through the steel pipe holes 33 opened on each set of connecting plates 32 in sequence, and keep the steel pipe horizontal under the support of the steel pipe holes 33.

[0053] Step S4: Rotate the adjusting bolt 53 so that the adjusting bolt 53 moves down along the screw hole 51 through the threaded connection with the screw hole 51, and the support plate 42 pushed by the adjusting bolt 53 flips downward.

[0054] Step S5: When the rotation angle of the support plate 42 reaches the setting requirement of the inclined steel pipe, rotate the auxiliary support plate 43. The auxiliary support plate 43 changes from a state that is flat relative to the rotating support plate 42 to a state that is perpendicular to the rotating support plate 42. In the vertical state, the rotating support plate 42 moves downward along the rotating axis and is embedded in the slot. In this state, the auxiliary support plate 43 is restricted by the rotating support plate 42 and can no longer rotate around the rotating axis. The auxiliary connecting slot 44 cooperates with the rotating support plate 42 and the auxiliary support plate 43 to form a steel pipe support part.

[0055] Step S6: Insert the end of the steel pipe into the steel pipe support part, at which time the steel pipe is supported by the steel pipe support part.

[0056] Step S7: Connect the combined formwork to the steel pipe. With the support of the steel pipe, the combined formwork remains fixed in its position. At this point, lay the bridge deck formwork on top of the combined formwork. The height of the bridge deck formwork is higher than the integrated bridge deck. Pour concrete into the bridge deck formwork. After the concrete solidifies, a pedestrian walkway structure connected to the integrated bridge deck is formed.

[0057] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. A novel steel-concrete composite beam bridge deck structure, comprising a steel main beam and an integrated bridge deck, wherein the integrated bridge deck is formed in place on the upper flange of the steel main beam by cast-in-place method, and the two sides of the integrated bridge deck are used as pedestrian walkways, and both sides of the integrated bridge deck are equipped with crash barriers and pedestrian guardrails. A bolt is welded and fixed to the web of the steel main beam, and a base assembly is fitted around the bolt. A transverse steel pipe fixing assembly is connected to the lower part of the base assembly, and an inclined steel pipe fixing assembly is provided at the top of the base assembly. An adjusting part of the fixing assembly is provided in the middle of the base assembly, and the top of the adjusting part of the fixing assembly abuts against the bottom of the inclined steel pipe fixing assembly.

2. The novel steel-concrete composite beam bridge deck structure as described in claim 1, characterized in that, The base assembly includes a base plate, a bolt hole, and a connecting sleeve. The bolt hole is located at the lower part of the base plate, and the base plate is fitted onto the outside of the bolt through the bolt hole. The connecting sleeve is welded to the upper surface of the base plate and communicates with the bolt hole.

3. The novel steel-concrete composite beam bridge deck structure as described in claim 2, characterized in that, The transverse steel pipe fixing assembly includes a collar, a connecting plate, a steel pipe hole, and a fixing nut. The collar is fitted outside the bolt hole, the connecting plate is welded to the middle position of the collar surface, the steel pipe hole is opened in the middle position of the connecting plate, and the fixing nut is set in the middle of the connecting plate and threadedly connected to the bolt.

4. The novel steel-concrete composite beam bridge deck structure as described in claim 3, characterized in that, The collar and the connecting sleeve have the same thickness, and the fixing nut abuts against both the connecting sleeve and the collar.

5. The novel steel-concrete composite beam bridge deck structure as described in claim 3, characterized in that, The inclined steel pipe fixing assembly includes a connecting seat, a rotating support plate, and an auxiliary support plate. The connecting seat is welded to the top of the base plate surface. The rotating support plate is installed inside the connecting seat via a rotating shaft. The auxiliary support plate is installed on top of the rotating support plate via a rotating shaft.

6. The novel steel-concrete composite beam bridge deck structure as described in claim 5, characterized in that, The inclined steel pipe fixing assembly also includes auxiliary connecting grooves. The top two sides of the rotating support plate are provided with auxiliary connecting grooves. The inner wall of the auxiliary connecting groove is arc-shaped. The auxiliary connecting grooves cooperate with the rotating support plate and the auxiliary support plate to form a steel pipe support part.

7. The novel steel-concrete composite beam bridge deck structure as described in claim 5, characterized in that, The rotating support plate has a slot at the top center position to be fixed with the auxiliary support plate, and the width of the slot is the same as the width of the auxiliary support plate.

8. The novel steel-concrete composite beam bridge deck structure as described in claim 5, characterized in that, The fixing component adjustment part includes a screw hole, an auxiliary support ring, and an adjustment bolt. The screw hole is located at the middle position of the base plate. The auxiliary support ring is welded to the middle position of the base plate. The auxiliary support ring is connected to the screw hole. The adjustment bolt is threaded into the inside of the screw hole.

9. A novel steel-concrete composite beam bridge deck structure as described in claim 8, characterized in that, The top of the adjusting bolt is rounded, and the surface of the rotating support plate is provided with an arc-shaped groove that mates with the adjusting bolt.

10. A construction support structure method for a novel steel-concrete composite beam bridge deck structure as described in any one of claims 1-9, characterized in that, Includes the following steps: Step S1: Weld several sets of bolts at a certain interval to the same height position of the web of the steel main beam; Step S2: Install the base plate outside the bolt, put the connecting plate on the outside of the connecting sleeve, and connect the fixing nut to the bolt thread. The fixing nut also presses and fixes the collar and the connecting sleeve, so that the base plate is stably attached to the surface of the bridge side wall, and the collar and the connecting plate welded to the collar are stably attached to the surface of the base plate. Step S3: Pass the steel pipe through the steel pipe holes opened on each set of connecting plates in sequence, and keep the steel pipe horizontal under the support of the steel pipe holes; Step S4: Rotate the adjusting bolt so that the adjusting bolt moves down along the screw hole through the threaded connection with the screw hole, and the support plate pushed by the adjusting bolt flips down; Step S5: When the rotation angle of the support plate reaches the setting requirement of the inclined steel pipe, rotate the auxiliary support plate. The auxiliary support plate changes from a state that is flat relative to the rotating support plate to a state that is perpendicular to the rotating support plate. In the vertical state, the rotating support plate moves downward along the rotating axis and is embedded in the slot. In this state, the auxiliary support plate is restricted by the rotating support plate and can no longer rotate around the rotating axis. The auxiliary connecting slot cooperates with the rotating support plate and the auxiliary support plate to form the steel pipe support part. Step S6: Insert the end of the steel pipe into the steel pipe support part, at which time the steel pipe is supported by the steel pipe support part; Step S7: Connect the combined formwork to the steel pipe. With the support of the steel pipe, the combined formwork is kept in a fixed position. At this time, the bridge deck template is laid on top of the combined formwork. The height of the bridge deck template is higher than that of the integrated bridge deck. Concrete is poured into the bridge deck template. After the concrete solidifies, a pedestrian walkway structure connected to the integrated bridge deck is formed.

Images