Steel-concrete composite beam lifting station and assembly and disassembly method thereof

Abstract

The present invention relates to a steel-concrete composite beam lifting station, comprising two rows of steel pipe piles arranged on both sides of a bridge to be constructed, each row of the steel pipe piles comprising at least two parallel steel pipe piles, each of the steel pipe piles being perpendicular to the ground where the bridge to be constructed is located; a plurality of lifting devices, with one lifting device being provided on each of the steel pipe piles; two rows of main trusses, each row of main trusses being hoisted by the lifting devices to a corresponding row of the steel pipe piles, the main trusses being located above the bridge deck of the bridge to be constructed; and a gantry hoist, comprising a hanger and a mobile hanger, the hanger being horizontally arranged on the two rows of main trusses, the longitudinal direction of the hanger being perpendicular to the longitudinal direction of the main trusses, the mobile hanger being movably arranged on the hanger and being movable on the hanger along the longitudinal direction of the hanger.

Description

Technical Field

[0001] The invention relates to a steel-concrete composite beam lifting station and an installation method thereof. Background Art

[0002] The steel-concrete composite beams used in bridge decks are usually composed of steel beam stages and bridge decks. Conventional steel beams use hollow-web trough beams, and the bridge decks are solid concrete slabs. The weight of the steel beams can reach 19,000 tons, and the weight of the bridge deck can reach 100 tons. Moreover, the span of the bridge deck is large, so under normal circumstances, it is difficult to implement it using conventional cranes. Summary of the Invention

[0003] The object of the present invention is to provide a steel-concrete composite beam lifting station which is simple in structure and easy to implement.

[0004] In order to achieve the above object, the present invention provides the following technical solutions: a steel-concrete composite beam lifting station, comprising

[0005] Two rows of steel pipe piles are arranged on both sides of the bridge being constructed, each row of the steel pipe piles includes at least two parallel steel pipe piles, and each of the steel pipe piles is perpendicular to the ground where the bridge is constructed;

[0006] A plurality of lifting devices, each of the steel pipe piles is provided with a lifting device;

[0007] Two rows of main trusses, each row of main trusses is hoisted by the lifting device to a corresponding row of the steel pipe piles, the main trusses being located above the bridge deck of the bridge being constructed; and

[0008] The gantry hoist comprises a hanger and a movable hanger, wherein the hanger is horizontally arranged on two rows of main trusses, the longitudinal direction of the hanger is perpendicular to the longitudinal direction of the main trusses, and the movable hanger is movably arranged on the hanger and can be moved on the hanger along the longitudinal direction of the hanger.

[0009] Furthermore, each of the steel pipe piles is connected to the main truss through a distribution beam, and each of the steel pipe piles includes a first frame and a second frame arranged opposite to each other. The main truss can move between the first frame and the second frame along the height direction of the steel pipe pile, and the distribution beam has a first position relative to the main truss in which the distribution beam is not connected to the steel pipe pile and a second position in which the distribution beam is connected to the steel pipe pile; when the distribution beam moves with the main truss to the preset installation position of the steel pipe pile, the distribution beam rotates relative to the truss section to change from the first position to the second position.

[0010] Furthermore, each row of the main trusses is formed by splicing together multiple truss segments, each truss segment is fixed between two adjacent steel pipe piles, and the distribution beam is provided between each truss segment and each steel pipe pile.

[0011] Furthermore, the distribution beam abuts against the bottom of the main truss. When in the first position, the distribution beam is suspended below the main truss via a steel wire rope.

[0012] Furthermore, the distribution beam can rotate relative to the main truss to move from a first position to a second position.

[0013] Furthermore, the steel-concrete composite beam lifting station also includes connecting beams arranged horizontally on the two rows of main trusses.

[0014] The present invention also relates to a method for assembling and disassembling a steel-concrete composite beam lifting station, comprising:

[0015] S1: Laying two rows of steel pipe piles on both sides of the bridge to be constructed, each row of steel pipe piles including at least two parallel steel pipe piles, each of the steel pipe piles being perpendicular to the ground where the bridge is located;

[0016] S2: Install a lifting device on each of the steel pipe piles,

[0017] S3: Assembling two rows of main trusses and gantry spreaders: Splice two rows of main trusses between two rows of steel pipe piles, where each row of trusses consists of multiple truss segments. Install a gantry spreader on the two rows of main trusses, where the gantry spreader includes a hanger installed between the two rows of main trusses and a mobile spreader installed on the hanger. The mobile spreader is movable on the hanger. A distribution beam is provided on the main trusses.

[0018] S4: using a lifting device to synchronously lift the two rows of main trusses and the gantry spreader until the distribution beam moves with the main trusses to the preset installation position of the steel pipe piles, and moving the distribution beam so that the distribution beam is docked with the corresponding steel pipe piles.

[0019] Furthermore, the step S2 includes in detail:

[0020] Place distribution beams at corresponding positions on the ground where the steel pipe piles are located;

[0021] Multiple truss sections and gantry hangers are assembled into an integrated structure at the corresponding positions of the two rows of steel pipe piles;

[0022] Lift each row of main trusses a certain distance relative to the ground;

[0023] Use wire ropes to hang the distribution beam under the truss.

[0024] Furthermore, the step S3 includes in detail:

[0025] Using a lifting device to synchronously lift the two rows of main trusses until the distribution beam moves along with the main trusses to the preset installation position of the steel pipe piles;

[0026] Rotate the distribution beam 90 degrees relative to the main truss so that the distribution beam can dock with the corresponding steel pipe pile.

[0027] Furthermore, the disassembly and assembly method includes:

[0028] Temporary piers were set up on the bridge deck as support points for the removal of the overhead crane beam after lowering. The overhead crane beam was moved to the top of the bridge deck piers, and the gantry crane was lowered to the bottom of the main truss of the beam lifting station. The middle part of the temporary piers above the bridge deck was cut off. A temporary support point was formed between the pipe piles on the outside of the temporary piers at the same height as the bridge deck as the main truss was lowered to the rear end of the bridge deck.

[0029] Lower the main truss and gantry crane to the bridge deck; fill the gap between the temporary piers and the gantry crane with steel plates;

[0030] Remove the lifting device and cut the steel pipe piles to the same height as the bridge deck; hoist the car onto the bridge; remove a section of the main truss on the bridge deck;

[0031] The truck crane drove into the gaps between the main trusses; dismantled the gantry crane; removed the overhead crane beams section by section; continued to dismantle the remaining main trusses on the bridge deck; and dismantled the temporary piers and remaining steel pipe piles.

[0032] The beneficial effects of the present invention are: the steel-concrete composite beam lifting station has a simple structure and can be directly assembled and disassembled on the construction site. The use of the steel-concrete composite beam lifting station improves work efficiency and is particularly suitable for the construction of large bridges (such as elevated bridges). Moreover, the steel-concrete composite beam lifting station has low geological requirements and wide adaptability.

[0033] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a front view of a steel-concrete composite beam lifting station shown in one embodiment of the present invention;

[0035] Figure 2 for Figure 1 A side view of the steel-concrete composite beam lifting station is shown;

[0036] Figure 3 for Figure 1 A top view of the steel-concrete composite beam lifting station is shown;

[0037] Figure 4 Schematic diagram of the main truss and gantry crane being assembled and lifted by the lifting device;

[0038] Figure 5Schematic diagram of the main truss and gantry crane as they pass under the lifting device and reach the bridge deck. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0040] See Figures 1 to 3 Combined with Figure 4 A preferred embodiment of the present invention shows a steel-concrete composite beam lifting station comprising: two rows of steel pipe piles 10, a plurality of lifting devices 50 (such as Figure 4 As shown, two rows of main trusses 20 and a gantry crane 30 are installed. Two rows of steel pipe piles 10 are located on either side of the bridge being constructed. Each row of steel pipe piles 10 includes at least two parallel steel pipe piles 11, each of which is perpendicular to the ground where the bridge is being constructed. A lifting device 50 is installed on each steel pipe pile 11. Each row of main trusses 20 is hoisted onto the corresponding row of steel pipe piles 10 by the lifting device 50. The main trusses 20 are positioned above the bridge deck (not shown) of the bridge being constructed. The gantry hoist 30 includes a hanger 31 and a mobile hanger 32. The hanger 31 is horizontally arranged on two rows of main trusses 20. The longitudinal direction of the hanger 31 is perpendicular to the longitudinal direction of the main trusses 20. The mobile hanger 32 is movably arranged on the hanger 31 and can move on the hanger 31 along the longitudinal direction of the hanger 31. The connection method between the hanger 31 and the mobile hanger 32 is: a slide rail 33 is provided on the hanger 31, and a mobile seat 34 cooperating with the slide rail 33 is provided on the mobile hanger 32, and the mobile seat 34 is driven by a driving device 35 to move on the slide rail 33 along the longitudinal direction of the hanger 31.

[0041] In this embodiment, to enhance the strength of the entire steel-concrete composite beam lifting station, the steel-concrete composite beam lifting station further includes a connecting beam 40 disposed transversely between the two rows of main trusses 20. In this embodiment, the lifting device 50 is a jack; however, other lifting devices 50 may be used in other embodiments.

[0042] In this embodiment, each of the steel pipe piles 11 is connected to the main truss 20 through a distribution beam (not numbered), and each of the steel pipe piles 11 includes a first frame 12 and a second frame 13 arranged opposite to each other. The main truss 20 can move between the first frame 12 and the second frame 13 along the height direction of the steel pipe pile 11. The distribution beam has a first position (not shown) relative to the main truss 20 so that the distribution beam is not connected to the steel pipe pile 11 and a second position (not numbered) so that the distribution beam is connected to the steel pipe pile 11; when the distribution beam moves with the main truss 20 to the preset installation position ( Figure 4 (The position indicated by arrow A is lower than the position of jack 50. In conventional configurations, jack 50 is typically located on top of steel pipe pile 11.) The distribution beam rotates relative to the truss segment to transition from the first position to the second position. Specifically, each row of main trusses 20 is composed of multiple truss segments (unnumbered). Each truss segment is secured between two adjacent steel pipe piles 11, with the distribution beam positioned between each truss segment and each steel pipe pile 11. The distribution beam is against the bottom of the main truss 20. Of course, in actual use, the distribution beam can also be set above or on the side of the main truss 20. However, by setting the distribution beam below the main truss 20, the distribution beam directly bears the force of the main truss 20. Compared with "setting the distribution beam above the main truss 20", "setting the distribution beam below the main truss 20" does not need to consider the force problem, and the distribution beam and the main truss 20 can be connected by simple fasteners or steel wire ropes, or the two can be not connected. Instead, when the distribution beam is in the second position, the distribution beam is connected to the steel pipe pile 11 and the main truss 20 is connected to the steel pipe pile 11 respectively. Moreover, no matter whether the distribution beam is directly connected to the main truss 20 or the distribution beam and the main truss 20 are connected to the steel pipe pile respectively, the connection method only needs to limit the movement of the main truss 20 relative to the steel pipe pile along the longitudinal direction of the main truss 20.

[0043] It should be noted that, in the first position, the distribution beam is suspended below the main truss 20 by a steel wire rope (not shown). Of course, in other embodiments, the distribution beam can be connected to the bottom of the main truss 20 by other structures. In addition, in this embodiment, the distribution beam can be rotated relative to the main truss 20 to move from the first position to the second position. In other embodiments, the distribution beam can be connected to the main truss 20 by a pull-type connection, etc. In actual work, the main truss 20 and the gantry hoist 30 are usually installed into an integrated structure first, and then the jack 50 lifts both to the specified position of the steel pipe pile 11 (such as Figure 4 Finally, remove the jack 50 and the steel pipe pile 11 above the A position (the final effect is as follows Figure 1 shown).

[0044] The materials and characteristics of the steel pipe piles 11, main trusses 20, distribution beams, jacks 50, and gantry cranes 30 are selected according to actual needs. The steel pipe piles 11 can be of two different types, which are divided into the main load-bearing structure and the auxiliary structure. The main load-bearing structure has better load-bearing performance than the auxiliary structure. The main truss 20 can adopt a triangular main truss 20 structure. The two adjacent truss sections are connected by high-strength bolts. The upper and lower chords of the triangular main truss 20 can be made of Q345 steel, and the middle reinforcement rods and webs are made of Q235 steel. The main truss is a spatial truss structure as a whole. In order to ensure the overall stability of the lifting station, it is adopted. The steel pipe connects and fixes two adjacent truss sections.

[0045] The assembly and disassembly methods of the above-mentioned steel-concrete composite beam lifting station include an installation method and a disassembly method.

[0046] Please combine Figures 1 to 4 , the installation method includes:

[0047] S1: Lay two rows of steel pipe piles 10 on both sides of the bridge to be constructed, each row of the steel pipe piles 10 includes at least two parallel steel pipe piles 11, and each of the steel pipe piles 11 is perpendicular to the ground where the bridge is constructed;

[0048] S2: Installing a lifting device 50 on each of the steel pipe piles 11;

[0049] S3: Assembling two rows of main trusses 20 and gantry spreaders 30: Splicing two rows of main trusses 20 between two rows of steel pipe piles 10, each row of trusses consisting of multiple truss segments, installing a gantry spreader 30 on the two rows of main trusses 20, the gantry spreader 30 including a hanger 31 installed between the two rows of main trusses 20 and a mobile spreader 32 installed on the hanger 31, the mobile spreader 32 being movable on the hanger 31, and a distribution beam being provided on the main trusses 20;

[0050] S4: The two rows of main trusses 20 and the gantry hanger 30 are synchronously lifted using the lifting device 50 until the distribution beam moves with the main trusses 20 to the preset installation position of the steel pipe piles, and the distribution beam is moved so as to dock with the corresponding steel pipe piles 11 .

[0051] Please combine Figures 1 to 3 and Figure 5 , the disassembly methods include:

[0052] A temporary buttress 70 is set up on the bridge deck 60 as a fulcrum for the removal of the overhead crane beam after lowering. The overhead crane beam is moved to the top of the buttress on the bridge deck 60, and the gantry crane 30 is lowered to the bottom of the main truss 20 of the beam lifting station. The middle part of the temporary buttress 70 above the bridge deck 60 is cut off. A temporary support point is formed between the pipe piles on the outside of the temporary buttress 70 at the same height as the bridge deck 60 plate as the main truss 20 is lowered to the rear end of the bridge deck 60.

[0053] Lower the main truss 20 and the gantry crane 30 to the bridge deck 60; fill the gap between the temporary pier 70 of the bridge deck 60 and the gantry crane 30 with steel plates;

[0054] Remove the lifting device 50 and cut the steel pipe pile 11 to the same height as the bridge deck 60; hoist the car onto the bridge; remove the main truss 20 on the bridge deck 60;

[0055] The truck crane drives into the main trusses 20 through the gaps; removes the gantry crane 30; removes the overhead crane beams section by section; continues to remove the remaining main trusses 20 on the bridge deck 60; and removes the temporary piers 70 and the remaining steel pipe piles 11.

[0056] In this embodiment, step S2 includes in detail:

[0057] Place a distribution beam at the corresponding position on the ground where the steel pipe pile 11 is located;

[0058] At the corresponding positions of the two rows of steel pipe piles 10, multiple truss sections and gantry hangers 30 are assembled into an integrated structure;

[0059] Each row of main trusses 20 is hoisted a certain distance relative to the ground;

[0060] Use wire ropes to hang the distribution beam under the truss.

[0061] In this embodiment, step S3 includes in detail:

[0062] The two rows of main trusses 20 are synchronously lifted using a lifting device 50 until the distribution beam moves with the main trusses 20 to the preset installation position of the steel pipe piles;

[0063] The distribution beam is rotated 90 degrees relative to the main truss 20 so that the distribution beam is docked with the corresponding steel pipe pile 11 .

[0064] In summary, the steel-concrete composite beam lifting station of the present invention has a simple structure and can be directly assembled and disassembled on the construction site. The use of the steel-concrete composite beam lifting station improves work efficiency and is particularly suitable for the construction of large bridges (such as elevated bridges). Furthermore, the steel-concrete composite beam lifting station has low geological requirements and wide adaptability.

[0065] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A steel-concrete composite beam lifting station, characterized in that: The method comprises two rows of steel pipe piles arranged on both sides of the bridge being constructed, each row of the steel pipe piles comprising at least two parallel steel pipe piles, each of the steel pipe piles being perpendicular to the ground where the bridge being constructed is located; A plurality of lifting devices, each of the steel pipe piles is provided with a lifting device; Two rows of main trusses, each row of main trusses is hoisted by the lifting device to a corresponding row of the steel pipe piles, the main trusses being located above the bridge deck of the bridge being constructed; and The gantry spreader comprises a hanger and a movable spreader, wherein the hanger is horizontally arranged on the two rows of main trusses, the longitudinal direction of the hanger is perpendicular to the longitudinal direction of the main trusses, and the movable spreader is movably arranged on the hanger and can move on the hanger along the longitudinal direction of the hanger; Each of the steel pipe piles is connected to the main truss via a distribution beam, each of the steel pipe piles includes a first frame body and a second frame body disposed opposite to each other, the main truss can move between the first frame body and the second frame body along the height direction of the steel pipe pile, the distribution beam has a first position relative to the main truss in which the distribution beam is not connected to the steel pipe pile and a second position in which the distribution beam is connected to the steel pipe pile; when the distribution beam moves with the main truss to a preset installation position of the steel pipe pile, the distribution beam rotates relative to the truss section to change from the first position to the second position; The distribution beam abuts against the bottom of the main truss. When in the first position, the distribution beam is suspended below the main truss via a steel wire rope. The distribution beam is rotatable relative to the main truss to move from a first position to a second position.

2. The steel-concrete composite beam lifting station according to claim 1, characterized in that: Each row of the main trusses is formed by splicing together multiple truss segments, each truss segment is fixed between two adjacent steel pipe piles, and the distribution beam is provided between each truss segment and each steel pipe pile.

3. The steel-concrete composite beam lifting station according to claim 1, characterized in that: The steel-concrete composite beam lifting station also includes a connecting beam horizontally arranged on the two rows of main trusses.

4. A method for assembling and disassembling a steel-concrete composite beam lifting station, characterized in that: The disassembly and assembly method comprises: S1: Laying two rows of steel pipe piles on both sides of the bridge to be constructed, each row of steel pipe piles including at least two parallel steel pipe piles, each of the steel pipe piles being perpendicular to the ground where the bridge is located; S2: Install a lifting device on each of the steel pipe piles, S3: Assembling two rows of main trusses and gantry spreaders: Splice two rows of main trusses between two rows of steel pipe piles, where each row of trusses consists of multiple truss segments. Install a gantry spreader on the two rows of main trusses, where the gantry spreader includes a hanger installed between the two rows of main trusses and a mobile spreader installed on the hanger. The mobile spreader is movable on the hanger. A distribution beam is provided on the main trusses. S4: using a lifting device to synchronously lift the two rows of main trusses and the gantry spreader until the distribution beam moves with the main trusses to the preset installation position of the steel pipe piles, and moving the distribution beam so that the distribution beam is docked with the corresponding steel pipe piles; The step S2 includes in detail: Place distribution beams at corresponding positions on the ground where the steel pipe piles are located; Multiple truss sections and gantry hangers are assembled into an integrated structure at the corresponding positions of the two rows of steel pipe piles; Lift each row of main trusses a certain distance relative to the ground; Use wire ropes to hang the distribution beam below the truss; The step S3 includes in detail: Using a lifting device to synchronously lift the two rows of main trusses until the distribution beam moves along with the main trusses to the preset installation position of the steel pipe piles; Rotate the distribution beam 90 degrees relative to the main truss so that the distribution beam can dock with the corresponding steel pipe pile.

5. The method for assembling and disassembling a steel-concrete composite beam lifting station according to claim 4, characterized in that: The disassembly and assembly method comprises: Set up temporary piers on the bridge deck as the fulcrum for dismantling the overhead crane beam after lowering. Move the overhead crane beam to the top of the bridge deck piers, lower the gantry crane to the bottom of the main truss of the beam lifting station, and cut off the middle part of the temporary pier above the bridge deck. A temporary support point is formed between the pipe piles on the outer side of the temporary pier at the same height as the bridge deck as the main truss is lowered to the rear end of the bridge deck; Lower the main truss and gantry crane to the bridge deck; fill the gap between the temporary piers and the gantry crane with steel plates; Remove the lifting device and cut the steel pipe piles to the same height as the bridge deck; hoist the car onto the bridge; remove a section of the main truss on the bridge deck; The truck crane drove into the gaps between the main trusses; dismantled the gantry crane; removed the overhead crane beams section by section; continued to dismantle the remaining main trusses on the bridge deck; and dismantled the temporary piers and remaining steel pipe piles.

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