Dual-purpose trestle support structure

Abstract

The present application provides a dual-purpose trestle support system, which includes a pile foundation support structure and a bridge deck support structure, wherein the pile foundation support structure is arranged in multiple groups along the bridge direction, and the bridge deck support structure is arranged above the pile foundation support structure, and the bridge deck support structure is arranged on the middle of its transverse section to serve as a passage, and the bridge deck or steel box girder sliding tracks are arranged on both sides of its transverse section. The dual-purpose trestle support system of the present application adjusts the position of the main support structures such as steel pipe piles and Bailey load-bearing beams, so that the support system can meet the force requirements when used as a trestle and the force requirements when used as a steel box girder sliding bracket, thereby achieving the purpose of structural sharing, without the need to set up additional steel box girder sliding brackets, so as to save engineering volume and construction costs.

Description

Technical Field

[0001] The present application relates to the field of bridge construction equipment, and in particular to a dual-purpose trestle support structure. Background Art

[0002] A trestle is a frame structure consisting of a beam-slab system set on piles or piers. It is mainly used to carry pipelines, pedestrians, belt conveyors or general transport vehicles, etc. It is a temporary bridge facility built for transporting materials, equipment and personnel.

[0003] When the upper structure of the water bridge is designed as a steel box girder and the waters are not navigable, most of the time, the steel box girder installation and construction is carried out by on-site loose assembly or erection of steel box girder assembly brackets. The erected steel box girder brackets are generally designed separately from the pier. The brackets generally adopt a steel pipe pile + Bailey + steel structure. First, the projection position of the steel box girder is laid out, and according to its projection position, the steel pipe piles are vibrated with a pile hammer, and then the steel load-bearing beam is installed at the top of the steel pipe pile, and then the Bailey group is laid, and then the distribution beam and sliding track are installed. After the steel box girder is processed, it is hoisted to the sliding track, slid to the bottom of the projection, and finally hoisted and installed by the bridge deck crane.

[0004] At present, the steel box girder sliding support and the trestle are designed to be separated, and the trestle is not fully utilized. It is necessary to re-invest materials, machinery and manpower in the construction of the sliding support, which requires large construction investment, high cost and long construction period. Summary of the invention

[0005] The purpose of the present application is to provide a double-channel trestle support structure that integrates the trestle and the steel box girder sliding bracket into an integrated structure, which can reduce the construction workload and save costs.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A dual-purpose trestle support system includes a pile foundation support structure and a bridge deck support structure, wherein the pile foundation support structures are arranged in multiple groups along the bridge direction, and the bridge deck support structure is arranged above the pile foundation support structures. The bridge deck support structure is located in the middle of its transverse section and a trestle bridge deck is arranged on the middle of its transverse section to serve as a passage, and trestle bridge decks or steel box girder sliding tracks are arranged on both sides of its transverse section.

[0008] It is further arranged that each group of the pile foundation supporting structures comprises two steel pipe piles arranged along the transverse direction of the bridge, and a pile top bearing beam extending along the transverse direction of the bridge is arranged above the two steel pipe piles.

[0009] It is further provided that each group of the pile foundation supporting structures also includes a flat link extending in the transverse direction and connecting the two steel pipe piles.

[0010] It is further configured that a pile foundation diagonal brace is provided between the flat joint and the pile top load-bearing beam.

[0011] It is further arranged that the bridge deck supporting structure includes Bailey load-bearing beams and distribution beams, a group of Bailey load-bearing beams are arranged on each end side along the length direction of the pile top load-bearing beams, each group of Bailey beams extends along the longitudinal direction of the bridge, and the distribution beams are extended along the transverse direction of the bridge and are erected on the two groups of Bailey load-bearing beams.

[0012] It is further arranged that the steel pipe pile is located in the projection directly below the Bailey load-bearing beam.

[0013] It is further configured that a diagonal brace is provided between each group of the Bailey load-bearing beams and the pile top load-bearing beams, the diagonal brace extends obliquely downward from the top of the Bailey load-bearing beams to the pile top load-bearing beams, and each group of the Bailey load-bearing beams is provided with the diagonal brace on both sides along its length direction.

[0014] It is further arranged that a supporting truss is arranged between the two groups of the Bailey load-bearing beams, and the supporting truss is used under the trestle bridge deck laid in the middle of the transverse section of the bridge supporting structure.

[0015] It is further arranged that: when the bridge deck supporting structure is provided with the steel box girder sliding tracks on both sides along the transverse direction of the bridge, the steel box girder sliding tracks are provided above the distribution beam corresponding to the Bailey load-bearing beam.

[0016] It is further configured that the steel box girder sliding track includes a track load-bearing beam extending along the bridge direction and a track slide plate arranged on the track load-bearing beam.

[0017] Compared with the prior art, the solution of this application has the following advantages:

[0018] The dual-purpose trestle support structure of the present application optimizes the structure of the trestle originally used for vehicle travel, so that the trestle and the steel box girder sliding bracket are combined into one. When constructing the lower structure of the bridge, the dual-purpose trestle support system can be used as a trestle support. At this time, the trestle serves as a transportation channel for vehicles to travel. After the construction of the lower structure of the bridge is completed, the trestle bridge decks on both sides of the transverse section of the trestle can be removed, leaving only the middle driving channel, and steel box girder sliding tracks are installed on both sides for the sliding transportation of the steel box girder. The dual-purpose trestle support system of the present application adjusts the position of the main supporting structures such as steel pipe piles and Bailey load-bearing beams, so that the support system can meet the force requirements when used as a trestle and the force requirements when used as a steel box girder sliding bracket, thereby achieving the purpose of structural sharing, without the need to set up additional steel box girder sliding brackets, so as to save engineering volume and construction costs.

[0019] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of the dual-purpose trestle support system of the present application used for a trestle;

[0022] Figure 2 This is a schematic structural diagram of the dual-purpose trestle support system used for the steel box girder sliding support of the present application.

[0023] In the figure, 1. pile foundation supporting structure; 11. steel pipe pile; 12. pile top load-bearing beam; 13. flat joint; 14. pile foundation diagonal brace; 2. bridge deck supporting structure; 21. Bailey load-bearing frame; 22. distribution beam; 23. diagonal brace; 24. supporting truss; 3. trestle bridge deck; 4. guardrail; 5. steel box girder sliding track; 51. track load-bearing beam; 52. track slide plate. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0025] See also Figure 1 and Figure 2 This application aims to solve the problem that the existing steel box girder sliding support and trestles are designed separately, resulting in the failure to fully utilize the trestles. This application provides a dual-purpose trestle support system, which designs the steel trestles under the bridge and focuses on the layout of various structures in the support system, so that the reinforced parts of the support system are under the projection of the longitudinal partition or web of the steel box girder, which can realize the transportation of the steel box girder, thereby achieving the purpose of sharing the trestles and sliding supports to save engineering workload.

[0026] The dual-purpose trestle support system includes a pile foundation support structure 1 and a bridge deck support structure 2, wherein the pile foundation support structure 1 is provided in multiple groups along the bridge direction, the bridge deck support structure 2 is provided above the multiple pile foundation support structures 1, and the trestle bridge deck 3 is laid on the bridge deck support structure 2. The trestle bridge deck 3 provided in the middle of the transverse section of the bridge deck support structure 2 can be used as a driving channel for vehicles to travel, and the two sides of the transverse section of the bridge deck support structure 2 can be provided with the trestle bridge deck 3 or the steel box girder sliding track.

[0027] When trestle bridge panels 3 are set on both sides of the bridge deck supporting structure 2, they can be used as pedestrian walkways. At this time, the dual-purpose trestle support system is used as the supporting structure of the trestle; when the construction of the bridge substructure is completed, the trestle bridge panels 3 used as pedestrian walkways on both sides of the bridge deck supporting structure 2 can be removed, and only the trestle bridge panels 3 in the middle position are retained as a vehicle passage. At the same time, the steel box girder sliding tracks are set on both sides of the bridge deck supporting structure 2 for the sliding of the steel box girder.

[0028] It should be noted that the pier support system of the present application can realize the sharing of sliding supports for the pier and steel box girder. Therefore, the sliding installation and construction of the steel box girder needs to be considered during the pier design stage. The cross-sectional dimensions of the pier are determined based on the web spacing of the steel box girder and the length of the pier. The reinforced stress points of the pile foundation support structure 1 and the bridge deck support structure 2 are located below the projection of the steel box girder web or the total partition.

[0029] Specifically, the pile foundation supporting structure 1 is arranged in multiple groups along the longitudinal direction of the bridge, and each group of the pile foundation supporting structure 1 includes two steel pipe piles 11 arranged along the transverse direction of the bridge, and a pile top load-bearing beam 12 extending along the transverse direction of the bridge is arranged above the two steel pipe piles 11 to connect the two steel pipe piles 11, and the pile top load-bearing beam 12 is fixed to the steel pipe piles 11 by welding with ear plates.

[0030] Furthermore, each group of the pile foundation supporting structure 1 also includes a flat joint 13 extending along the transverse direction and connecting the two steel pipe piles 11. The flat joint 13 can connect the two steel pipe piles 11 to form a whole. A pile foundation diagonal brace 2314 is provided between the flat joint 13 and the pile top load-bearing beam 12. The pile foundation diagonal brace 2314 is obliquely supported between the pile top load-bearing beam 12 and the flat joint 13. The setting of the pile foundation diagonal brace 2314 can effectively increase the stiffness and seismic resistance of the pile foundation supporting structure 1.

[0031] Preferably, the size of the steel pipe pile 11 in this embodiment is The pile top load-bearing beam 12 is made of 2I63a I-beam, and the flat joint 13 is preferably made of The diagonal brace 23 is made of double-jointed 20a channel steel.

[0032] The bridge supporting structure is arranged above multiple groups of pile foundation supporting structures 1, and the bridge supporting structure includes Bailey load-bearing beams 21 and distribution beams 22. The Bailey load-bearing beams 21 are located at both ends of the transverse section of the bridge supporting structure, and each group of Bailey load-bearing beams extends along the longitudinal direction of the bridge. The distribution beams 22 are extended along the transverse direction of the bridge and are erected on two groups of Bailey load-bearing beams 21. Multiple distribution beams 22 are arranged along the longitudinal direction of the bridge, and the trestle bridge deck 3 is laid on multiple distribution beams 22.

[0033] Furthermore, a diagonal brace 23 is arranged between each group of the Bailey load-bearing beams 21 and the pile top load-bearing beam 12, and the diagonal brace 23 extends obliquely downward from the top of the Bailey load-bearing beam 21 to the pile top load-bearing beam 12 in a direction away from the Bailey load-bearing beam 21, and the diagonal brace 23 is arranged on both sides of the length direction of each group of the Bailey load-bearing beams 21. By arranging the diagonal braces 23 on both sides of the Bailey load-bearing beams 21, the structural strength of the Bailey load-bearing beams 21 can be further strengthened, and its bearing capacity can be improved.

[0034] At the same time, a support truss 24 is provided between the two groups of Bailey load-bearing beams 21. The support truss 24 is located below the trestle bridge deck 3 corresponding to the middle position of the trestle cross section used as the driving channel. The support truss 24 can further support the trestle bridge deck 3 at the driving channel to ensure that the trestle has a good bearing capacity and ensure the safety of the driving channel. In addition, the driving channel in this embodiment is a two-way driving channel.

[0035] When the trestle bridge decks 3 are laid on both sides of the transverse section of the bridge deck support structure 2, a pedestrian passage for pedestrians can be formed to facilitate the construction of the bridge substructure by workers. The positions where the trestle bridge decks 3 are laid on both sides of the transverse section of the bridge deck support structure 2 are located above the Bailey load-bearing frame, so that the Bailey load-bearing frame is used as the force-bearing basis of the pedestrian track to improve the structural bearing strength of the pedestrian passage. In addition, when the trestle bridge decks 3 are laid on both sides of the bridge deck support structure 2 to form a pedestrian passage, guardrails 4 can be set on both sides of the pedestrian passage to improve the construction safety of workers.

[0036] After the construction of the bridge substructure is completed, the trestle bridge deck 3 and guardrail 4 on both sides of the transverse section of the bridge deck supporting structure 2 can be removed, and only the trestle bridge deck 3 used as the driving passage can be retained. A steel box girder sliding track is installed at the position of the trestle bridge deck 3 originally laid as a pedestrian passage. The steel box girder sliding track includes a track load-bearing beam 51 extending along the bridge direction and a track slide 52 arranged on the track load-bearing beam 51, wherein the track load-bearing beam 51 is preferably made of 2I45a steel.

[0037] The steel box girder sliding track is arranged above the distribution beam 22 corresponding to the Bailey load-bearing weight, so that the Bailey load-bearing beam 21 group serves as the load-bearing structure of the steel box girder sliding track. Furthermore, the steel pipe pile 11 is located in the projection directly below the Bailey load-bearing beam 21, which can further enhance the load-bearing capacity of the Bailey load-bearing beam 21. That is, the present application can design the position arrangement of each component of the trestle support system according to the size of the steel box girder to be transported, and by making the Bailey load-bearing beam 21, steel pipe pile 11 and other reinforced parts under the projection of the longitudinal partition or web of the steel box girder, the trestle support system of the present application has the ability to transport steel box girders and meets the force requirements of steel box girder transportation.

[0038] When constructing the dual-purpose trestle support system of this application, it is necessary to first formulate the cross-sectional dimensions of the trestle according to the web spacing of the steel box beam and the length of the trestle, so that the main load-bearing structures such as the steel pipe piles 11 and Bailey load-bearing beams 21 of the support system are located below the projection of the steel box beam webs or longitudinal diaphragms, and then the steel pipe piles 11 are vibrated by using a standing pile hammer with reference to the design drawings of the trestle, and the top-mouthed pile top load-bearing beams 12 are installed on the tops of the two steel pipe piles 11 upward along the same transverse bridge to complete the construction of the pile foundation support structure 1. Next, the Bailey load-bearing beams 21 and the distribution beams 22 are installed above the completed pile top load-bearing beams 12, and the trestle bridge deck 3 is laid and the trestle bridge deck system structure is installed.

[0039] After the construction of the bridge tower is completed, the trestle bridge deck 3 and guardrail 4 used as a pedestrian passage on the trestle can be removed, and the steel box girder sliding track can be installed there. The steel box girder sub-processing area slides to the bottom of the projection of the corresponding segment through the steel box girder sliding track, and the bridge crane is used for lifting and installation.

[0040] In summary, the present application optimizes the structure of the trestle originally used for vehicle travel so that the trestle and the steel box girder sliding bracket are integrated. When constructing the lower structure of the bridge, the dual-purpose trestle support system can be used as a trestle support, and the trestle is used as a transportation channel for vehicles to travel. After the construction of the lower structure of the bridge is completed, the trestle bridge decks 3 on both sides of the transverse section of the trestle can be removed, leaving only the middle driving channel, and steel box girder sliding tracks are installed on both sides for the sliding transportation of the steel box girder. The main supporting structures such as the steel pipe piles 11 and Bailey load-bearing beams 21 of the dual-purpose trestle support system of the present application are adjusted in position so that the support system can meet the force requirements when used as a trestle and the force requirements when used as a steel box girder sliding bracket, thereby achieving the purpose of structural sharing, without the need to set up a steel box girder sliding bracket separately, so as to save engineering volume and construction costs.

[0041] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A dual-purpose trestle support structure, characterized in that: It comprises a pile foundation support structure and a bridge deck support structure, wherein the pile foundation support structure is provided in a plurality of groups along the longitudinal direction of the bridge, and the bridge deck support structure is provided above the pile foundation support structure, and each group of the pile foundation support structure comprises two steel pipe piles provided along the transverse direction of the bridge, and a pile top bearing beam extending along the transverse direction of the bridge is provided above the two steel pipe piles, and the bridge deck support structure comprises a Bailey bearing beam and a distribution beam, and each group of the Bailey bearing beams is provided along the two end sides of the length direction of the pile top bearing beam, and each group of the Bailey bearing beams extends along the longitudinal direction of the bridge, and the distribution beam is extended and erected on the two groups of the Bailey bearing beams along the transverse direction of the bridge, and a trestle bridge deck is provided on the middle part of the transverse section of the bridge deck support structure for use as a passage, and trestle bridge decks or steel box beam sliding tracks are provided on both sides of the transverse section; When trestle bridge panels are laid on both sides of the transverse section of the bridge deck supporting structure, the trestle bridge panels are laid on both sides of the transverse section of the bridge deck supporting structure to form a pedestrian passage for pedestrians to pass through, and the positions where the trestle bridge panels are laid on both sides of the transverse section of the bridge deck supporting structure are located above the Bailey load-bearing frame; when the bridge deck supporting structure is provided with the steel box girder sliding track on both sides along the transverse direction of the bridge, the steel box girder sliding track is arranged above the distribution beam corresponding to the Bailey load-bearing beam, and the steel box girder sliding track includes a track load-bearing beam extending along the bridge direction and a track slide plate arranged on the track load-bearing beam.

2. The dual-purpose trestle support structure according to claim 1 is characterized in that: Each group of the pile foundation supporting structures also includes a flat link extending in the transverse direction and connecting two of the steel pipe piles.

3. The dual-purpose trestle support structure according to claim 2 is characterized in that: A pile foundation diagonal brace is provided between the flat joint and the pile top load-bearing beam.

4. The dual-purpose trestle support structure according to claim 1 is characterized in that: The steel pipe pile is located in the projection directly below the Bailey load-bearing beam.

5. The dual-purpose trestle support structure according to claim 1 is characterized in that: An oblique brace is provided between each group of the Bailey load-bearing beams and the pile-top load-bearing beams. The oblique brace extends obliquely downward from the top of the Bailey load-bearing beams to the pile-top load-bearing beams, and each group of the Bailey load-bearing beams is provided with the oblique brace on both sides along its length direction.

6. The dual-purpose trestle support structure according to claim 1 is characterized in that: A supporting truss is arranged between the two groups of Bailey load-bearing beams, and the supporting truss is used under the trestle bridge deck laid in the middle of the transverse section of the bridge supporting structure.

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