Quick-release leveling structure for variable-height bridge incremental launching construction and construction system

Abstract

The utility model relates to a height-variable bridge incremental launching construction quick-release leveling structure and a construction system, the height-variable bridge incremental launching construction quick-release leveling structure comprises two top plates which stretch across a splicing seam of a steel box girder and are detachably connected with the bottom of the steel box girder, and two bottom plates which are arranged on the top of a walking type jack and are arranged on the left side and the right side of the steel box girder; the structure comprises a top plate and a bottom plate, and further comprises a plurality of stiffening plates arranged between the top plate and the bottom plate and webs penetrating through the stiffening plates, and further comprises an L-shaped bottom support fixing the bottom plate and at least one stiffening plate and an inclined support connecting the bottom support and the stiffening plates, and the structure stretches across a splicing seam of a steel box girder and is detachably connected with a steel box girder bolt. And the construction flexibility and efficiency are obviously improved.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to the technical field of a quick-disassembly and leveling structure for jacking construction of a variable-height bridge and a construction system. Background Art

[0002] In the field of bridge construction, the jacking method is widely used as an effective construction technology for the construction of uniform cross-section bridges. However, when encountering complex terrain and the need for varying bridge heights, traditional leveling structures are not efficient enough.

[0003] For example, Chinese patent CN215714693U discloses a leveling structure for jacking of variable-section bridges, which uses an I-beam to fix the lower end surface of the leveling unit and connect all the leveling units together to reduce the design weight of the leveling structure and provide a leveling structure with strong anti-deformation ability.

[0004] However, this type of leveling structure also has the problem of taking a long time to install and dismantle, which not only increases construction costs but may also delay the construction period.

[0005] This has prompted us to find a faster and more convenient solution to improve construction efficiency and reduce unnecessary waste of resources, which has become an urgent need. Utility Model Content

[0006] The utility model is aimed at this problem and proposes a quick-disassembly leveling structure and construction system for variable-height bridge jacking construction, aiming to provide an innovative design that can significantly improve construction flexibility and efficiency.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A quick-disassembly leveling structure for jacking construction of a variable-height bridge comprises a top plate spanning the joint of a steel box girder and detachably connected to the bottom of the steel box girder, and a bottom plate disposed on top of a walking jack. The top plate and the bottom plate are each two plates, disposed on the left and right sides of the steel box girder.

[0009] Also included are a plurality of stiffening plates disposed between the top plate and the bottom plate and a web passing through the stiffening plates;

[0010] It also includes an L-shaped bottom support for fixing the bottom plate and at least one stiffening plate, and an oblique support for connecting the bottom support and the stiffening plate.

[0011] Compared with the existing technology, this case provides horizontal support and diagonal support force through the vertical support structure of the stiffening plate and web between the top plate and the bottom plate, the bottom support across the left and right sides, and two V-shaped diagonal supports. This structure spans the joint of the steel box girder and is detachably connected to the steel box girder with bolts, which significantly improves construction flexibility and efficiency.

[0012] In a preferred embodiment, the stiffening plate fixed to the bottom plate by the L-shaped bottom support is a stiffening plate without a joint or an end.

[0013] In a preferred embodiment, the stiffening plate includes an outer stiffening plate and an inner stiffening plate inside thereof, and the oblique support is connected to the inner stiffening plate.

[0014] In a preferred embodiment, the steel box girder and the top plate are detachably connected at the front and rear end stiffening plates, and the detachable connection is a bolt connection.

[0015] A variable height bridge jacking construction system comprises a plurality of variable height bridge jacking construction quick-disassembly and leveling structures as described above which are connected in series.

[0016] In a preferred embodiment, the gap between the quick-disassembly leveling structures for the variable-height bridge jacking construction is 1 to 3 cm.

[0017] In some embodiments, it also includes a slide beam and a walking jack arranged in sequence upward from the upper end of the pier load-bearing beam to the variable height bridge jacking construction quick-disassembly leveling structure.

[0018] In some embodiments, it also includes a leveling structure dismantling structure arranged on one side of the jacking construction direction of the slideway beam, which is used to dismantle the quick-disassembly leveling structure of the variable height bridge jacking construction after it passes the last supporting pier.

[0019] In some embodiments, the leveling structure dismantling structure is provided in each steel box girder section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a cross-sectional diagram of the quick-dismantle leveling structure and steel box girder in this case;

[0021] Figure 2 This is a schematic diagram of the front and rear installation of the quick-disassembly leveling structure in this case;

[0022] Figure 3 This is a schematic diagram of the assembly of the quick-disassembly leveling structure and steel box girder in this case;

[0023] Figure 4 This is a schematic diagram of the front and rear structure of the quick-disassembly leveling structure in this case;

[0024] Figure 5 、 Figure 6 、 Figure 7 This is a schematic diagram demonstrating the dismantling of the leveling structure of the variable height bridge jacking construction system in this case;

[0025] Figure 8 yes Figure 5 A partial enlarged schematic diagram of point A in the middle. DETAILED DESCRIPTION

[0026] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0027] Please refer to Figures 1 to 4 In this case, a quick-disassembly leveling structure 1 for jacking construction of a variable-height bridge includes a top plate 100 detachably connected to the bottom of a steel box girder 2, spanning a joint 21. The steel box girder 2 can be assembled into steel box girder segments, forming joints 21 between them. During jacking construction, the assembled steel box girder segments are pushed. This is a well-established technical method in the industry and will not be described in detail.

[0028] It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in this description refer to directions in the accompanying drawings, while the terms "bottom," "top," "inside," and "outside" refer to directions toward or away from the geometric center of a specific component, respectively. In particular, the front-to-back direction refers to the direction in which the steel box girder segments are pushed during jacking construction, with the forward direction being the forward direction and the reverse direction being the backward direction.

[0029] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0030] Please continue to refer to Figures 1 to 4 Furthermore, it also includes a bottom plate 200 installed on the top of the walking jack 3. Here, pads 4 are installed on both sides of the walking jack 3. This is a common structure for jacking construction and will not be described in detail. In this case, the top plate 100 and the bottom plate 200 are respectively two, installed at corresponding positions on the left and right sides of the steel box girder 1.

[0031] Furthermore, it also includes a plurality of stiffening plates 300 disposed between the top plate 100 and the bottom plate 200 and a web 400 passing through the stiffening plates 300. Preferably, the stiffening plates 300 include an outer stiffening plate 310 and an inner stiffening plate 320 disposed therein, and the web 400 is disposed between the inner stiffening plate 320 and the outer stiffening plate 310.

[0032] In a preferred embodiment, the steel box girder 2 and the top plate 100 are detachably connected at the front and rear end stiffening plates 300, and the detachable connection is a bolt connection.

[0033] Furthermore, the system further includes an L-shaped bottom support 500 for fixing the bottom plate 200 and at least one stiffening plate 300, and an inclined support 600 for connecting the bottom support 500 and the stiffening plate 300. Specifically, the stiffening plate 300 fixed to the bottom plate 200 by the L-shaped bottom support 500 is a stiffening plate 300 that is not at the joint 21 or at the end.

[0034] Furthermore, the oblique supports 600 are connected to the inner plate 320. At this time, the two oblique supports 600 will present a V-shaped stable support structure.

[0035] In this way, this case provides horizontal support and diagonal support force through the vertical support structure of the stiffening plate 300 and the web 400 between the top plate 100 and the bottom plate 200, and the bottom support 500 across the left and right sides and the two V-shaped diagonal supports 600, and this structure spans the joint 21 of the steel box girder 2 and is detachably connected to the steel box girder 2 with bolts, thereby significantly improving construction flexibility and efficiency.

[0036] Please refer to Figure 2 and Figures 5 to 8 In some embodiments employing the variable-height bridge jacking construction quick-disassembly leveling structure 1 described above, a variable-height bridge jacking construction system includes a plurality of the variable-height bridge jacking construction quick-disassembly leveling structures 1 described above connected in series. Preferably, the gaps between the variable-height bridge jacking construction quick-disassembly leveling structures 1 are 1 to 3 cm.

[0037] Furthermore, it also includes a slide beam 6 and a walking jack 3 which are sequentially arranged upward from the upper end of the pier load-bearing beam 5 to the quick-disassembly leveling structure for the side-height bridge jacking construction.

[0038] In some embodiments, a leveling structure dismantling structure 7 is further included, which is arranged on one side of the jacking construction direction of the slideway beam 6 and is used to dismantle the quick-disassembly leveling structure 1 for jacking construction of a variable-height bridge after it passes the last supporting pier. Specifically, one leveling structure dismantling structure 7 is provided in each steel box beam section.

[0039] Figures 5 to 7 This is a schematic diagram for demolition of the leveling structure, where T1 to T5 represent steel box girder sections. For ease of description, the following uses T1 section as an example. Figure 5 When the T3 section leaves the walking jack 3 of pier No. 10 and the T4 section leaves the walking jack 3 of pier No. 9, the partial dismantling of the quick-disassembly leveling structure 1 for the jacking construction of the corresponding height-adjustable bridge can begin.

[0040] like Figure 6 After the jacking process has cleared the walking jack 3 at pier 12, the T2 section has cleared the walking jack 3 at pier 11, and the T5 section has cleared the walking jack 8 at pier 11, the quick-disassembly leveling structure 1 for the jacking construction of the corresponding height-adjusted bridge will begin to be dismantled. Simultaneously, the T3 and T4 sections can also continue to be dismantled.

[0041] After all beam sections are pushed into place, the variable height bridge pushing construction quick-dismantle leveling structure 1 except for the location of the walking jack 3 equipment, and the leveling structure at the location of the walking jack 3 equipment is dismantled in conjunction with the beam dropping construction.

[0042] As mentioned above, this case protects a quick-disassembly leveling structure and construction system for the jacking construction of a variable-height bridge. All technical solutions that are identical or similar to those in this case should be deemed to fall within the scope of protection of this case.

Claims

1. A quick-disassembly leveling structure for jacking construction of variable-height bridges, characterized in that: It comprises a top plate (100) spanning a joint seam (21) of a steel box girder (2) and detachably connected to the bottom of the steel box girder (2), and a bottom plate (200) arranged on the top of a walking jack (3), wherein two top plates (100) and two bottom plates (200) are provided, respectively, and are arranged on the left and right sides of the steel box girder (2); It also includes a plurality of stiffening plates (300) disposed between the top plate (100) and the bottom plate (200) and a web (400) passing through the stiffening plates (300); It also includes an L-shaped bottom support (500) for fixing the bottom plate (200) and at least one stiffening plate (300), and an oblique support (600) for connecting the bottom support (500) and the stiffening plate (300).

2. A quick-disassembly leveling structure for jacking construction of a variable-height bridge according to claim 1, characterized in that: The stiffening plate (300) fixed to the bottom plate (200) through the L-shaped bottom support (500) is a stiffening plate (300) without a joint (21) or an end portion.

3. A quick-disassembly leveling structure for jacking construction of a variable-height bridge according to claim 1, characterized in that: The stiffening plate (300) comprises an outer stiffening plate (310) and an inner stiffening plate (320) located inside the outer stiffening plate, and the oblique support (600) is connected to the inner stiffening plate (320).

4. A quick-disassembly leveling structure for jacking construction of a variable-height bridge according to claim 1, characterized in that: The steel box beam (2) and the top plate (100) are detachably connected at the front and rear end stiffening plates (300), and the detachable connection is a bolt connection.

5. A variable height bridge jacking construction system, characterized in that: It comprises a plurality of quick-disassembly leveling structures (1) for jacking construction of a variable-height bridge as described in any one of claims 1 to 4, which are connected in series.

6. The variable height bridge jacking construction system according to claim 5, characterized in that: The gap between the variable height bridge jacking construction quick-disassembly leveling structures (1) is 1 to 3 cm.

7. The variable height bridge jacking construction system according to claim 6, characterized in that: It also includes a slideway beam (6) and a walking jack (3) arranged upward in sequence from the upper end of the pier load-bearing beam (5) to the variable-height bridge jacking construction quick-disassembly leveling structure (1).

8. The variable height bridge jacking construction system according to claim 7, characterized in that: It also includes a leveling structure dismantling structure (7) arranged on one side of the jacking construction direction of the slideway beam (6) for dismantling the quick-dismantling leveling structure (1) for jacking construction of the variable height bridge after it passes the last supporting pier.

9. The variable height bridge jacking construction system according to claim 8, characterized in that: The leveling structure removal structure (7) is respectively provided on each steel box beam section.

Images