Transverse limiting device for bridge jacking construction

Abstract

The utility model discloses a transverse limiting device for bridge jacking construction, which relates to the technical field of bridge jacking and comprises a limiting device support, connecting beams and a limiting column, the limiting device support is connected with the connecting beams through connecting bolts, the connecting beams are connected through connecting bolts, and the limiting device support is connected with the limiting column through connecting bolts. The transverse limiting device is in close contact with the bridge support through the connecting beam, so that the transverse limiting device is prevented from moving in the bridge direction; through contact between the limiting device support and the side face of the bridge pier, movement in the transverse bridge direction is prevented, and full-assembly type construction of the transverse limiting device for bridge jacking construction can be achieved; self-anchoring can be achieved by means of the bridge pier, and the foundation does not need to be treated; and after construction is completed, dismantling can be conveniently carried out, and reutilization is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge jacking, in particular to a transverse limiting device used for bridge jacking construction. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Bridge lifting and reconstruction construction refers to the construction method of lifting and reconstructing the structure of an existing bridge. Usually, this method will set up a support structure under the bridge, and then lift the bridge's superstructure (bridge deck, beams, etc.) in sections to the designed height, and then fix it on the original piers or newly built support structures to finally complete the lifting and reconstruction of the bridge.

[0004] Through bridge jacking and reconstruction construction, the goals of increasing the traffic height, improving the bridge's bearing capacity, extending its service life and adapting to new traffic requirements can be achieved.

[0005] With the continuous improvement of transportation infrastructure, the reconstruction and construction of bridges through jacking technology is becoming more and more promising: First, the advancement of urbanization requires higher, more stable and safer traffic bridges, and jacking reconstruction provides an effective way to upgrade and reconstruct existing bridges. Secondly, there are a large number of old bridges in many areas, which need to be reconstructed to meet the needs of modern transportation, and jacking reconstruction is an economical and efficient solution. Most importantly, jacking reconstruction not only saves resources and reduces construction costs, but also reduces the impact on the surrounding environment, which is in line with the concept of green environmental protection. Therefore, bridge jacking reconstruction construction has broad prospects in the fields of urban construction and transportation improvement.

[0006] The main reason for setting limit devices in bridge jacking reconstruction construction is to ensure the safety and accuracy of the construction process. The limit device can effectively control the jacking height, prevent over-limit jacking from causing structural deformation or tilt, and avoid possible accidents. At the same time, the limit device can also ensure the accurate positioning of each jacking unit, ensuring the stability and balance of the entire bridge during the jacking process.

[0007] In the bridge lifting reconstruction construction, it is usually necessary to set limit devices in both the transverse and longitudinal directions. Among them, the transverse limit device is mainly used to control the transverse displacement of the bridge. During the bridge lifting process, the transverse limit device can ensure the stability of the overall horizontal position of the bridge. Prevent the bridge from tilting or shifting in the transverse direction, and ensure the accuracy and safety of the construction.

[0008] At present, the various parts of the transverse limit device in jacking construction need to be assembled separately, which is time-consuming and laborious, and are mostly connected by welding, resulting in slow installation speed and difficulty in dismantling after the construction is completed. Utility Model Content

[0009] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a transverse limiter for bridge jacking construction, which can achieve rapid installation and disassembly, improve construction efficiency, and solve the problems of cumbersome installation and complex construction of traditional limiters.

[0010] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions:

[0011] The utility model provides a transverse limit device for bridge jacking construction, comprising: four groups of limit device supports, limit columns and connecting beams with the same structure, the limit device supports are formed by vertically welding a horizontal connecting plate and a vertical connecting plate; the limit column is vertically connected to the top surface of the horizontal connecting plate; the connecting beam is connected and fixed to two groups of limit device supports on the same side of the transverse direction of the pier by bolt connection; a support truss is welded to the bottom surface of the horizontal connecting plate, and the horizontal connecting plate and the vertical connecting plate are both provided with a first bolt hole; the vertical connecting plate is bolted to the connecting beam.

[0012] Furthermore, the connecting beam includes a first connecting base plate and a first side plate arranged in the length direction of the first connecting base plate, and a second side plate arranged in the width direction of the first connecting base plate. The first side plate and the second side plate are vertically welded to the first connecting base plate to form an open box-type structure, and a second bolt hole is arranged on the first side plate, and a third bolt hole is arranged on the second side plate.

[0013] Furthermore, the first side plate is in contact with the bridge support to fix and limit the position of the connecting beam.

[0014] Furthermore, the second side plate is bolted to the second side plate of other connecting beams to achieve splicing between the connecting beams or is bolted to the vertical connecting plate of the limit device support.

[0015] Furthermore, the overall length of the connecting beams after splicing is consistent with the width of the pier.

[0016] Furthermore, the support truss is a right-angled triangle, one right-angled side of the support truss is welded to the bottom surface of the horizontal connecting plate, and the other right-angled side is in close contact with the bridge pier.

[0017] Furthermore, the support truss is perpendicular to the center lines of the horizontal connecting plates and the vertical connecting plates.

[0018] Furthermore, the lateral limiting device is connected to limiting columns arranged on the same side of the pier along the bridge direction through threaded rods.

[0019] Furthermore, the limiting column is composed of an I-shaped steel column and a second connecting base plate, the steel column is perpendicular to the second connecting base plate, and the second connecting base plate is provided with a fourth bolt hole connected to the horizontal connecting plate.

[0020] Furthermore, the web of the steel column is provided with a fourth bolt hole connected to the threaded rod.

[0021] The beneficial effects of the embodiments of the present utility model are as follows:

[0022] The transverse limit device in the utility model is in close contact with the side of the pier through the support trusses of the limit device supports on both sides of the pier to limit the displacement of the transverse limit device in the transverse direction of the bridge, and then cooperates with the limit column to limit the transverse displacement of the bridge deck in the transverse direction of the bridge; the limit columns adjacent to each other on the same side along the bridge direction are connected into a whole through the threaded rod and the third bolt hole on the web of the steel column to limit the displacement of the transverse limit device in the transverse direction of the bridge. The device is self-anchored with the help of the pier, does not need to be connected to the foundation, occupies a small construction site, and does not need to be treated as a foundation; all are connected by bolts, and after the bridge jacking construction process is completed, the transverse limit device can be easily disassembled and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] Figure 1 It is a schematic diagram of a lateral limiting device according to an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of a support and a connecting beam of a position limiting device according to an embodiment of the utility model;

[0026] Figure 3 It is a schematic structural diagram of a limiting column in an embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the installation process of the lateral limiting device of the embodiment of the utility model;

[0028] In the figure: 1, bridge pier; 11, bridge support; 2, bridge deck; 21, bridge deck expansion joint; 3, transverse limit device; 31, limit device support; 311, support truss; 312, vertical connecting plate; 313, horizontal connecting plate; 314, first bolt hole; 32, connecting beam; 321, first connecting base plate; 322, first side plate; 323, second bolt hole; 324, second side plate; 325, third bolt hole; 33, limit column; 331, steel column; 332, fourth bolt hole; 333, second connecting base plate; 334, threaded rod; 34, connecting bolt.

[0029] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0030] As introduced in the background technology, existing bridge lateral limit devices are usually fixed on the bridge piers to control the lateral displacement of the bridge within a certain range. Although this limiting method can have a certain limiting effect on the bridge, the installation tightness of the lateral limit device is low and the installation construction is relatively cumbersome.

[0031] In order to solve the above technical problems, the utility model proposes a transverse limiter for bridge jacking construction, which realizes self-anchoring with the help of bridge piers, and realizes rapid installation and disassembly through a threaded connection structure, thereby improving construction efficiency and solving the problems of cumbersome installation and complex construction of traditional limiters.

[0032] like Figure 1-Figure 4 As shown, one embodiment of the utility model records a transverse limit device for bridge jacking construction, including: four groups of limit device supports 31, limit columns 33 and connecting beams 32 with the same structure connected by connecting bolts 34.

[0033] like Figure 1 As shown, after the bridge deck 2 is hingedly installed on the bridge pier 1, a bridge deck expansion joint 21 is arranged between the two bridge decks 1. The bridge deck expansion joint 21 is used to adjust the displacement and connection between the superstructures caused by vehicle loads and bridge construction materials.

[0034] like Figure 2 As shown, the limit device support 31 is welded by a horizontal connecting plate 313 whose spatial position is parallel to the horizontal plane and a vertical connecting plate 312 whose spatial position is perpendicular to the horizontal plane; the horizontal connecting plate 313 is perpendicular to the horizontal center line of the vertical connecting plate 312, and the horizontal connecting plate 313 and the vertical connecting plate 312 are both provided with a first bolt hole 314; the bottom surface of the horizontal connecting plate 313 is welded with a support truss 311.

[0035] The connecting beam 32 is an open box-type structure, which is welded by a first connecting bottom plate 321 and a first side plate 322 arranged in the length direction of the first connecting bottom plate 321, and a second side plate 324 arranged in the width direction of the first connecting bottom plate 321. The first side plate 322 and the second side plate 324 are both perpendicular to the first connecting bottom plate 321, and a second bolt hole 323 is processed on the first side plate 322; and a third bolt hole 325 is processed on the second side plate 324.

[0036] like Figure 4 As shown, the first side plate 322 contacts the bridge support 11 to fix the position of the connecting beam 32. The second side plate 324 is connected to the second side plates 324 of other connecting beams 32 by bolts to achieve the splicing of the connecting beams 32, so that the overall length of the spliced ​​connecting beams 32 is consistent with the width of the pier 1. The second side plates 324 at both ends of the spliced ​​connecting beams 32 are bolted to the vertical connecting plates 312 of the limiting device support 31.

[0037] Specifically, the first side plate 322 contacts the bridge support 11 to prevent the spliced ​​connecting beam 32 from moving along the bridge direction and plays a fixing role.

[0038] like Figure 2 As shown, the support truss 311 is a right triangle, one right-angled side of the support truss 311 is welded to the bottom surface of the horizontal connecting plate 313 , and the other right-angled side is in close contact with the bridge pier 1 .

[0039] Specifically, the support truss 311 is perpendicular to the symmetric center line of the horizontal connecting plate 313 and the vertical connecting plate 312 of the limiting device support 31 .

[0040] like Figure 1 and Figure 3 As shown, the limiting column 33 is connected via a threaded rod 334 on the same side along the bridge.

[0041] The limiting column 33 is composed of an I-shaped steel column 331 and a second connecting base plate 333. The steel column 331 is perpendicular to the second connecting base plate 333. The second connecting base plate 333 is provided with a fourth bolt hole 332 connected to the horizontal connecting plate 313. The web of the steel column 331 is provided with a fourth bolt hole 332 connected to the threaded rod 334.

[0042] Specifically, the first bolt hole 314 , the second bolt hole 323 , the third bolt hole 325 and the fourth bolt hole 332 have the same specifications.

[0043] Specifically, the support trusses 311 welded on the limit device supports 31 on both sides of the pier 1 are in close contact with the side surfaces of the pier 1, thereby limiting the transverse displacement of the lateral limit device 3 on the pier 1, and then cooperating with the limit column 33 to limit the transverse displacement of the bridge deck 2; the limit columns 33 adjacent to the same side of the pier 1 along the bridge direction are connected into a whole through the threaded rod 334 and the fourth bolt hole 332 set on the web of the steel column 331, so as to limit the transverse displacement of the lateral limit device 3 on the pier 1 along the bridge direction.

[0044] like Figure 4 As shown, the specific installation process of the lateral limiting device 3 is as follows:

[0045] In the first step, the connection beam 32 is spliced ​​on the ground by connecting bolts 34 so that the overall length of the spliced ​​connection beam 32 is consistent with the width of the pier 1.

[0046] In the second step, the assembled connecting beam 32 is hoisted to both sides of the top surface of the pier 1 in the transverse direction of the bridge, and then placed in the gap between the bridge deck 2 and the pier 1, and the first side plate 322 of the connecting beam 32 is in close contact with the bridge support 11.

[0047] The third step is to hoist the limit device support 31, align the vertical connecting plate 312 of the limit device support 31 with the second side plate 324 of the connecting beam 32, and then connect the limit device support 31 and the connecting beam 32 through the connecting bolts 34. Then, the limit device support 31 is also hoisted and installed on the other side of the connecting beam 32. After the installation is completed, the support trusses 311 of the limit device support 31 on both sides of the pier 1 should be in close contact with the side of the pier 1 to limit the displacement of the lateral limit device 3 in the transverse direction of the bridge.

[0048] The fourth step is to hoist the limiting column 33 so that the fourth bolt hole 332 of the limiting column 33 is aligned with the first bolt hole 314 on the horizontal connecting plate 313 on the limiting device support 31 and connect them by connecting bolts 34 .

[0049] The fifth step is to screw the threaded rod 334 into the fourth bolt hole 332 on the web of the steel column 331, connect the adjacent limiting columns 33 into a whole, so as to limit the displacement of the limiting device in the direction of the bridge, and complete the installation.

[0050] The above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A lateral limit device for bridge jacking construction, characterized in that: include: Four groups of limit device supports, limit columns and connecting beams with the same structure, the limit device supports are formed by vertically welding horizontal connecting plates and vertical connecting plates; the limit columns are vertically connected to the top surface of the horizontal connecting plates; the connecting beam is connected and fixed to two groups of limit device supports on the same side of the transverse direction of the pier by bolt connection; a support truss is welded to the bottom surface of the horizontal connecting plate, and the horizontal connecting plate and the vertical connecting plate are both provided with a first bolt hole; the vertical connecting plate is bolted to the connecting beam.

2. A lateral limit device for bridge jacking construction as claimed in claim 1, characterized in that: The connecting beam includes a first connecting base plate and a first side plate arranged in the length direction of the first connecting base plate, and a second side plate arranged in the width direction of the first connecting base plate. The first side plate and the second side plate are vertically welded to the first connecting base plate to form an open box-type structure. A second bolt hole is arranged on the first side plate, and a third bolt hole is arranged on the second side plate.

3. A lateral limiting device for bridge jacking construction as claimed in claim 2, characterized in that: The first side plate is in contact with the bridge support to fix and limit the position of the connecting beam.

4. A lateral limit device for bridge jacking construction as claimed in claim 2, characterized in that: The second side plate is bolted to the second side plate of other connecting beams to achieve the splicing between the connecting beams or is bolted to the vertical connecting plate of the limiting device support.

5. A lateral limit device for bridge jacking construction as claimed in claim 1, characterized in that: The overall length of the connecting beams after being spliced ​​is consistent with the width of the pier.

6. A lateral limit device for bridge jacking construction as claimed in claim 1, characterized in that: The support truss is a right-angled triangle, one right-angled side of the support truss is welded to the bottom surface of the horizontal connecting plate, and the other right-angled side is in close contact with the bridge pier.

7. A lateral limit device for bridge jacking construction as claimed in claim 1, characterized in that: The support truss is perpendicular to the center lines of the horizontal connecting plate and the vertical connecting plate.

8. A lateral limiting device for bridge jacking construction as claimed in claim 1, characterized in that: The lateral limiting device is connected with the limiting columns arranged on the same side of the pier along the bridge direction through threaded rods.

9. A lateral limit device for bridge jacking construction as claimed in claim 1, characterized in that: The limiting column is composed of an I-shaped steel column and a second connecting base plate. The steel column is perpendicular to the second connecting base plate, and the second connecting base plate is provided with a fourth bolt hole connected to the horizontal connecting plate.

10. A lateral limiting device for bridge jacking construction as claimed in claim 9, characterized in that: The web of the steel column is provided with a fourth bolt hole connected with the threaded rod.

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