A method for lateral sliding construction of circular curved steel beams

Abstract

This invention provides a method for the lateral sliding construction of a circular curved steel beam, characterized by the following steps: S10: Erecting a sliding support frame, and setting four sliding beams on top of the sliding support frame, arranged laterally relative to the bridge; S20: Sequentially installing a stop block, a horizontal pushing jack, and a sliding shoe on each sliding beam; S30: Installing supports and lifting jacks on the top of the piers; S40: Hoisting the steel beam onto the four sliding shoes; S50: Using the horizontal pushing jacks to push the sliding shoes, moving the steel beam forward to a position directly above the four piers; S60: Using the lifting jacks to lift the steel beam, dismantling the sliding support frame, allowing the steel beam to rest on the supports on the pier tops, adjusting the steel beam elevation, and completing the steel beam erection. The lateral sliding construction method for circular curved steel beams described in this invention has a wide range of applications, suitable not only for the construction of circular arc steel beams with different radii of curvature, but also for the construction of S-shaped curved steel beams.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction, and in particular relates to a method for lateral sliding construction of circular curved steel beams. Background Technology

[0002] Due to the constraints of complex sites and natural conditions during bridge construction, steel beams may not be able to be erected using conventional methods, leading to the widespread application of the sliding construction method. However, conventional sliding construction methods suffer from drawbacks such as long setup times for sliding supports and cumbersome procedures, potentially resulting in high construction costs and extended construction periods. Furthermore, there is currently very little practical guidance available for the sliding construction of large-scale curved steel beams. Therefore, how to efficiently and safely perform lateral sliding construction of curved steel beams has become a pressing issue for those skilled in the art. Summary of the Invention

[0003] In view of this, the present invention aims to propose a method for lateral sliding construction of curved steel beams, so as to achieve safe and effective lateral sliding construction of curved steel beams.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] A method for constructing a circular curved steel beam by lateral sliding includes the following steps:

[0006] S10: Based on the existing construction platform at the location of the four steel beam piers to be erected, a sliding support is set on the top of the sliding support. There are four sliding beams, and their arrangement is transverse relative to the bridge.

[0007] The four sliding beams are arranged in two pairs, with two sliding beams in one pair corresponding to the two piers on the ramp side of the four bridge piers. The other pair has two sliding beams that are also parallel to each other, corresponding to the two piers on the other side of the bridge.

[0008] S20: Each slide beam is sequentially equipped with a stop block, a horizontal push jack, and a sliding shoe. The stop block is fixed to the slide beam, the horizontal push jack is fixed to the stop block, and the sliding shoe is connected to the pushing end of the horizontal push jack.

[0009] S30: Install supports and lifting jacks on the top of each of the bridge piers;

[0010] S40: Hoist the steel beam onto the four sliding shoes;

[0011] S50: The horizontal push jack action pushes the sliding shoe to move the steel beam forward along the slide beam to the position directly above the four piers;

[0012] S60: The lifting jacks on the top of the pier lift the steel beam, remove the sliding support, and the lifting jacks lower the steel beam onto the support on the top of the pier. The elevation of the steel beam is adjusted to complete the erection of the steel beam.

[0013] Furthermore, the slide beam spans the top of the pier and is supported by supports on the top of the pier.

[0014] Furthermore, the bridge piers are equipped with pads.

[0015] Furthermore, the sliding support is supported and fixed by temporary piles and permanent piles formed by bridge piers at corresponding locations.

[0016] Compared with existing technologies, the lateral sliding construction method for circular curve steel beams described in this invention has the following advantages:

[0017] (1) The transverse sliding construction scheme of circular curve steel beams has a wide range of applications. It is not only applicable to the construction of circular arc steel beams with different curvature radii, but also applicable to the construction of S-shaped curve steel beams.

[0018] (2) Selecting an existing support location as the sliding fulcrum eliminates the need to find a new fulcrum, saving time on calculation and reinforcement of the new fulcrum and improving work efficiency.

[0019] (3) The sliding support is composed of temporary piles and permanent piles, which makes the most of the existing structure and saves material usage.

[0020] (4) The conventional steel beam sliding scheme has only two sliding tracks, while the circular curve steel beam transverse sliding construction scheme has four sliding tracks, which is convenient to arrange and adaptable to the erection of curved steel beams.

[0021] (5) During the sliding process, the lateral sliding thrust is an internal force. Blocks are set on the sliding beam and the sliding shoes are pushed by the horizontal push jack. The entire sliding support has no horizontal force, making the construction process safer. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 This is a schematic diagram of the steel beam sliding in the lateral sliding construction method for circular curve steel beams described in this embodiment of the invention;

[0024] Figure 2 This is a top view of the sliding support arrangement in the transverse sliding construction method for circular curved steel beams according to an embodiment of the present invention;

[0025] Figure 3This is a structural diagram of the steel beam erection in the transverse sliding construction method for circular curve steel beams described in an embodiment of the present invention;

[0026] Figure 4 This is a diagram showing the arrangement of sliding shoes in the transverse sliding construction method for circular curved steel beams according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-FP9 pier; 2-ZP10 pier; 3-floating crane; 4-ZP11 pier; 5-sliding support; 6-sliding beam; 7-steel beam; 8-horizontal push jack; 9-sliding shoe; 10-pad plate; 11-stop block. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] This embodiment takes the erection of steel beams 7 on two ZP10 piers 2 and two ZP11 piers 4 of the main line ramp during bridge construction as an example. The two ZP10 piers 2 are located on one side of the ramp, and the two ZP11 piers 4 are located on the other side of the ramp.

[0031] A method for constructing a circular curved steel beam by lateral sliding includes the following steps:

[0032] S10: A sliding support frame 5 is erected based on the existing construction platform at the locations of the two ZP10 piers 2 and the two ZP11 piers 4. Four sliding beams 6 are installed on top of the sliding support frame 5, arranged laterally relative to the main line ramp erection direction. Figure 2 , Figure 3 As shown;

[0033] The four sliding beams 6 are arranged in two pairs, forming two groups. In one group, the two sliding beams 6 are arranged side by side and correspond one-to-one with piers ZP10 2 and ZP11 4 located on the ramp side of the four bridge piers, with each of the two sliding beams 6 located to the right of the corresponding pier. In the other group, the two sliding beams 6 are arranged side by side and correspond one-to-one with piers ZP10 2 and ZP11 4 located on the other side of the bridge, with the sliding beams 6 in this other group located to the right of the corresponding pier.

[0034] In this embodiment, the sliding support 5 is composed of permanent piles and temporary piles. The permanent piles include ZP10 pier 2, ZP11 pier 4 and FP9 pier 1, which is adjacent to ZP10 pier 2 and is located outside the main line ramp outside the F ramp steel beam construction. The temporary piles are temporary pile foundations, thereby maximizing the use of the existing structure and saving material usage.

[0035] S20: Each slide beam 6 is sequentially equipped with a stop block 11, a horizontal push jack 8, and a slide shoe 9, such as Figure 4As shown, the stop block 11 is fixed to the slide beam 6, the horizontal push jack 8 is fixed to the stop block 11, and the sliding shoe 9 is connected to the pushing end of the horizontal push jack 8; when the horizontal push jack 8 pushes the steel beam 7 to move, the entire sliding support 5 is free from horizontal force, making the construction process safer.

[0036] S30: Install supports and lifting jacks on the tops of the two ZP10 piers 2 and the two ZP11 piers 4 respectively (not shown in the figure);

[0037] S40: Use the floating crane 3 to lift the steel beam 7 onto the four sliding shoes 9. At this time, the steel beam 7 is supported by the four sliding shoes 9. Figure 3 As shown;

[0038] S50: The horizontal push jack 8 moves, pushing the sliding shoe 9 to move the steel beam 7 forward along the sliding beam 6 until the steel beam 7 moves from the right side of the pier to a position directly above the piers, namely the two ZP10 piers 2 and the two ZP11 piers 4. At this time, the steel beam 7 is supported by these four piers. Figure 1 As shown;

[0039] S60: The lifting jack on the top of the pier lifts the steel beam 7, causing the steel beam 7 to detach from the sliding shoe 9. The sliding support is removed, and the lifting jack push rod retracts to lower the steel beam 7 onto the support on the top of the pier. The elevation of the steel beam is adjusted, and the steel beam erection is completed.

[0040] In this invention, the slide beam 6 spans the top of the bridge pier and is supported by the supports on the top of the pier. It utilizes the existing structure for construction, thereby improving the construction speed and reducing costs.

[0041] In this invention, the tops of the bridge piers, namely the tops of the two ZP10 piers 2 and the two ZP11 piers 4, are provided with pads 10.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for constructing a circular curved steel beam by lateral sliding, characterized in that: Includes the following steps: S10: Based on the existing construction platform at the location of the four steel beam piers to be erected, a sliding support is set on the top of the sliding support. There are four sliding beams, and their arrangement is transverse relative to the bridge. The four sliding beams are arranged in two pairs, with two sliding beams in one pair corresponding to the two piers on the ramp side of the four bridge piers. The other pair has two sliding beams that are also parallel to each other, corresponding to the two piers on the other side of the bridge. S20: Each slide beam is sequentially equipped with a stop block, a horizontal push jack, and a sliding shoe. The stop block is fixed to the slide beam, the horizontal push jack is fixed to the stop block, and the sliding shoe is connected to the pushing end of the horizontal push jack. S30: Install supports and lifting jacks on the top of each of the bridge piers; S40: Hoist the steel beam onto the four sliding shoes; S50: The horizontal push jack action pushes the sliding shoe to move the steel beam forward along the slide beam to the position directly above the four piers; S60: The lifting jacks on the top of the pier lift the steel beam, remove the sliding support, and the lifting jacks lower the steel beam onto the support on the top of the pier. The elevation of the steel beam is adjusted to complete the erection of the steel beam.

2. The method for constructing a circular curved steel beam by lateral sliding according to claim 1, characterized in that: The slide beam spans the top of the pier and is supported by supports on the top of the pier.

3. The method for constructing a circular curved steel beam by lateral sliding according to claim 1, characterized in that: The bridge piers are equipped with pads.

4. The method for constructing a circular curved steel beam by lateral sliding according to claim 1, characterized in that: The sliding support is supported and fixed by temporary piles and permanent piles formed by bridge piers at corresponding locations.

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