A connecting frame device for displacement of large steel structure bridge and its use method

Abstract

The present invention discloses a connecting frame device for displacement of a large steel structure bridge and a method for using the same, comprising a connecting frame body for connecting sea and land side support frames, and a support structure arranged on the connecting frame body; the support structure comprises a plurality of connecting supports connected in sequence; a slide beam is arranged at the bottom of each connecting support, and a height adjustment structure is arranged on the slide beam; a fixed seat is arranged at both ends of the bottom of each connecting support, and a fixed plate is arranged between the fixed seats; the connecting frame device also comprises a slideway laid on the dock surface, and the number of the slideways matches the number of the connecting supports; the slide beam moves along the slideway. The present invention overcomes the problem of insufficient compressive stability of slender rods during displacement of large steel structure bridges.

Description

Technical Field

[0001] The invention relates to a large steel structure bridge displacement technology, and more specifically, to a connecting frame device for large steel structure bridge displacement and a use method thereof. Background Art

[0002] The main span of a large steel structure bridge generally weighs 10,000 tons. After the main span is manufactured at the manufacturing plant dock, it needs to be transported to the installation site by transport ship for installation. Since some installation sites do not have large floating cranes with a capacity of more than 10,000 tons for lifting, based on the installation height requirements of some large steel structure bridges, they need to be placed on a support frame about 20 meters above the ground for manufacturing in the production plant, and then slid onto the ship as a whole together with the support frame, and transported to the installation site for installation.

[0003] Please combine Figure 1 As shown, due to the high height of the support frame, in order to reduce the weight of the support frame and save costs, the support frame 200 below the main span 100 of a large steel structure bridge is generally not designed as an integral continuous structure, but is designed as a split structure, with only two sections of the support frame 200 set at the head and tail positions of the main span 100, and the total weight of the two sections of the support frame 200 is about 1,500 tons.

[0004] After the main span 100 is closed on the support frame 200, it is fixed to the top of the support frame 200, and then slid from the dock 300 to the transport ship 400 together with the support frame 200. The total weight of the main span 100 and the two sections of the support frame 200 is 12,000 tons. In the process of sliding from the dock 300 to the transport ship 400, in addition to the traction system, a pullback system is also set up to cope with sudden failures, so as to pull back in case of failure.

[0005] The maximum resistance of the main span 100 together with the two sections of the support frame 200 when sliding as a whole can reach 1,200 tons. Due to some docks and equipment reasons, some towing points of the traction and pullback systems are set on the sea-side support frame 200. During traction, the sea-side support frame 200 pulls the main span 100 and the land-side support frame 200 to slide forward together; during pullback, the sea-side support frame 200 pushes the main span 100 and the land-side support frame 200 to slide backward together. During the sliding process of the support frame 200, in order to prevent the structure of the large steel structure bridge itself and the local structure of the connection between the main span 100 and the top of the support frame 200 from being damaged, a lightweight connecting frame is required to be set between the two sections of the support frame 200 to connect them into a whole so that they can meet the tension and compression conditions at the same time. Summary of the invention

[0006] In view of the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a connecting frame device for the displacement of a large steel structure bridge and a method of using the same, which overcomes the problem of insufficient compressive stability of slender rods during the displacement of a large steel structure bridge.

[0007] To achieve the above object, the present invention adopts the following technical solution:

[0008] On the one hand, a connecting frame device for displacement of a large steel structure bridge comprises a connecting frame body for connecting sea and land side support frames, and a support structure arranged on the connecting frame body;

[0009] The support structure comprises a plurality of connection supports connected in sequence;

[0010] A slide beam is provided at the bottom of each connecting support, and a height adjustment structure is provided on the slide beam;

[0011] Both ends of the bottom of each of the connecting supports are provided with fixing seats, and a fixing plate is provided between the fixing seats;

[0012] The connecting frame device also includes a slideway laid on the dock surface, and the number of the slideways matches the number of the connecting supports;

[0013] The slide beam moves along the slideway.

[0014] Preferably, the number of the connecting supports is greater than or equal to 3.

[0015] Preferably, the connecting frame body includes longitudinal connecting tubes whose number matches the connecting supports.

[0016] Preferably, the connecting supports are connected via a transverse connecting pipe.

[0017] Preferably, a toggle plate is provided between the connecting support and the transverse connecting pipe.

[0018] Preferably, the height adjustment structure is an oblique wedge of wood.

[0019] Preferably, the slide is fixed to the dock surface via a horse board.

[0020] Preferably, baffles are provided on both sides of the top surface of the slideway.

[0021] Preferably, the length of the connecting frame body is between 55 meters and 57 meters, and the width is between 29 meters and 31 meters.

[0022] On the other hand, a method for using a connecting frame device for displacement of a large steel structure bridge comprises the following steps:

[0023] 1) Before preparing for sliding, the slideway in the connecting frame device for displacement of the large steel structure bridge is laid on the dock surface, and the dock surface and the slideway are fixed with the horse plate;

[0024] 2) The sea-side support frame and the land-side support frame are removed, and the weight of the sea-side support frame, the land-side support frame and the main span is transferred to the slideway;

[0025] 3) arranging the slide beam on the slideway, and adjusting the center line of the slide beam to coincide with the center line of the slideway;

[0026] 4) Install the connection support, add the height adjustment structure between the connection support and the skateboard beam, and adjust the bottom surface height of the connection support to be level with the bottom surfaces of the sea-side support frame and the land-side support frame;

[0027] 5) Lofting the actual gap between the connecting support and the skateboard beam, installing the fixing seat and the fixing plate to form the support structure;

[0028] 6) Install the connecting frame body, and align the ends of the connecting frame with the internal ribs of the structural member by using brackets;

[0029] 7) After installation, the sea-side support frame pulls or pushes the land-side support frame through the connecting frame device to slide along the slideway.

[0030] The connecting frame device for displacement of a large steel structure bridge and the use method thereof provided by the present invention also have the following beneficial effects:

[0031] 1) When the main span of a bridge weighing more than 10,000 tons is elevated and slid by a support frame, the support frame does not need to be made into an integral part. It is only necessary to set two independent support frames for the large span, and then use the sea-side and land-side connecting frames to connect them, so that the main span of the bridge and the support frame can be elevated and slid onto the ship as a whole, saving a lot of support frame manufacturing costs;

[0032] 2) The sea and land side connection frames are easy to install and dismantle. They only need to be installed a few days before the main span of the bridge slides, and can be quickly dismantled after being put on board. They do not need to be installed when the main span is made. This reduces the occupation of dock and ship space resources and the blockage of site passages by the connection frames, facilitates the entry and exit of personnel and equipment, and minimizes its impact on construction;

[0033] 3) The sea and land side connecting frames are used to connect the bottom of the support frame into a whole, and the tension and pressure during the sliding process are converted into the internal force of the connecting frame structure, avoiding damage to the main span structure of the bridge and the local structure of the connection with the upper part of the support frame, thus protecting the product well;

[0034] 4) With the sea and land side connection frames, the main span of the bridge and the support frame can be pulled forward when sliding onto the ship as a whole, and can be pulled back in case of failure, which greatly increases the safety of the main span of the bridge and the support frame during the overall sliding onto the ship;

[0035] 5) The structure of the connecting frame has been optimized to the greatest extent, using only straight pipes and plug-in plates, which facilitates on-site construction and guarantees the integrity of the materials to the greatest extent, so that it can be reused in other projects to the greatest extent after the project is completed;

[0036] 6) A connection support is designed at the weakest middle part of the connection frame, and the method of the present invention is adopted to constrain its displacement in all directions, thereby greatly improving the axial compressive capacity of the connection frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the main span of the existing bridge being elevated and slid onto the ship as a whole;

[0038] Figure 2 It is a schematic diagram of the on-site arrangement of the connecting frame device of the present invention;

[0039] Figure 3 is a schematic top view of the connecting frame device of the present invention;

[0040] Figure 4 yes Figure 3 Schematic diagram of the A direction;

[0041] Figure 5 yes Figure 4 Schematic diagram of the B direction. DETAILED DESCRIPTION

[0042] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0043] Please combine Figures 3 to 5 As shown, a connecting frame device for displacement of a large steel structure bridge provided by the present invention comprises a connecting frame body 3 for connecting sea and land side support frames 1 and 2, and a support structure 4 installed on the connecting frame body 3.

[0044] The support structure 4 includes a plurality of three connection supports 6 which are connected in sequence through transverse connection pipes 5, and the connection direction between the connection supports 6 and the transverse connection pipes 5 is perpendicular to the direction from the dock 300 to the transport ship.

[0045] A slide beam 7 is disposed at the bottom of each connecting support 6 , and a height adjustment structure 8 is provided on the slide beam 7 . In this embodiment, the height adjustment structure 8 is made of an inclined wedge.

[0046] Both ends of the bottom of each connecting support 6 are provided with fixing seats 9 , and a fixing plate 10 is provided in the middle of the fixing seats 9 .

[0047] The connecting frame device of the present invention also includes a slideway 11 laid on the surface of the dock 300 and fixed by a horse plate 12. The number of the slideways 11 is adapted to the number of the connecting supports 6, and the number of the slideways 11 and the number of the connecting supports 6 are greater than or equal to 3.

[0048] The slide beam 7 moves along its corresponding slideway 11 .

[0049] Baffles 13 are installed on both sides of the top surface of each slideway 11 to prevent the slide beam 7 from deviating from the slideway 11 when sliding.

[0050] The connecting frame body 3 includes longitudinal connecting tubes whose number matches the connecting supports 6, and the connecting supports 6 are sleeved on the corresponding longitudinal connecting tubes.

[0051] The connection strength between the connecting support 6 and the transverse connecting pipe 5 is increased by adding a bracket 14.

[0052] Please combine Figure 2 As shown, the principle of the connection frame device of the present invention is: during the sliding process, the connection frame device 600 of the present invention is set between the sea and land side support frames 1 and 2. During the sliding process, the traction (tension or pressure) acting on the sea side support frame 1 is transmitted to the land side support frame 2 through the connection frame device 600 of the present invention, pulling the land side support frame 2 forward or pushing the land side support frame 2 backward. The length of the connection frame device of the present invention is 55.7 meters, the width is 30 meters, and the maximum sliding resistance is 1200 tons. The following measures are taken for the weakest part of the connection frame body 3 on the connection frame device of the present invention that is squeezed and deformed:

[0053] 1) A support structure 4 with a certain deadweight is arranged at the maximum extrusion deformation position in the middle of the connecting frame body 3. The support structure 4 can not only prevent the connecting frame body 3 from being displaced and deformed upward when being extruded by its deadweight, but also play a transfer role, conveniently connecting with each longitudinal connecting pipe and transverse connecting pipe 5, thereby reducing the difficulty of on-site installation of each pipe fitting;

[0054] 2) A slide beam 7 is provided below the connecting support 6 in the support structure 4, and the height adjustment structure 8 (oblique wedge wood) on the slide beam 7 is used to adjust the bottom surface height of the connecting support 6 and support the connecting support 6. The connecting support 6 can slide on the slideway 11 through the slide beam 7, and the slideway 11 is fixed on the dock 300, which can effectively prevent the connecting frame body 3 from being displaced and deformed downward when being squeezed;

[0055] 3) The front and rear ends of the connecting support 6 are provided with a fixing seat 9, and a fixing plate 10 is provided in the middle, forming a rigid whole with the slide beam 7 below. The slideway 11 is fixed on the dock 300 with a horse board 12, and baffles 13 are provided on both sides of the slideway 11. During the sliding process, the baffles 13 can effectively restrict the horizontal displacement of the slide beam 7 forming a whole with the connecting support 6;

[0056] 4) The connecting support 6 has a certain length and is connected to the two sets of transverse connecting pipes 5 at the head and tail, which can keep the force of the connecting support 6 stable during the sliding process so that it does not deflect, and at the same time eliminates the need for inclined pipes in the connecting frame body 3, reducing the difficulty of on-site construction.

[0057] Through the above design, the connection support 6 is effectively constrained from displacement in all directions, which greatly enhances the axial compressive strength of the connection frame device of the present invention, saves construction costs, greatly reduces the investment in labor, equipment and materials, and has high economic value.

[0058] The present invention also provides a method for using a connecting frame device for displacement of a large steel structure bridge, comprising the following steps:

[0059] 1) Before the sliding, three slideways 11 of the connecting frame device 600 for the displacement of the large steel structure bridge were laid on the pier 300, and the pier 300 surface and the slideway 11 were fixed with a horse board 12;

[0060] 2) The sea side support frame 1 and the land side support frame 2 are removed, and the weight of the sea side support frame 1, the land side support frame 2 and the main span is transferred to the slideway 11;

[0061] 3) Arrange the slide beam 7 on the slideway 11 at the bottom of the connecting support 6, and adjust the center line of the slide beam 7 to coincide with the center line of the slideway 11;

[0062] 4) Install the connecting support 6, add a height adjustment structure 8 (oblique wedge wood) between the connecting support 6 and the skateboard beam 7, and adjust the bottom surface height of the connecting support 6 to be level with the bottom surfaces of the sea-side support frame 1 and the land-side support frame 2;

[0063] 5) According to the actual gap between the connecting support 6 and the skateboard beam 7, the fixing seat 9 and the fixing plate 10 are installed to form a support structure so that the connecting support 6 and the skateboard beam 7 form a rigid whole;

[0064] 6) Install the connecting frame body 3 and the transverse connecting pipe 5, and use the bracket 14 at the ends to align the ribs with the internal ribs of the structural parts;

[0065] 7) After installation, the sea-side support frame 1 pulls or pushes the land-side support frame 2 to slide along the slideway 11 through the connecting frame device 600 .

[0066] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A connecting frame device for displacement of a large steel structure bridge, characterized in that: It includes a connecting frame body for connecting the sea side support frame and the land side support frame, and a support structure arranged on the connecting frame body; The support structure comprises a plurality of connection supports connected in sequence; A slide beam is provided at the bottom of each connecting support, and a height adjustment structure is provided on the slide beam; Both ends of the bottom of each of the connecting supports are provided with fixing seats, and a fixing plate is provided between the fixing seats; The connecting frame device also includes a slideway laid on the dock surface, and the number of the slideways matches the number of the connecting supports; The slide beam moves along the slideway, A sliding plate beam is arranged below the connecting support in the support structure, and the bottom surface height of the connecting support is adjusted and supported by the height adjustment structure on the sliding plate beam; the connecting support slides on the slideway through the sliding plate beam, and the slideway is fixed on the dock; A fixed seat is arranged at the head and tail of the connecting support, and a fixed plate is arranged in the middle, which forms a rigid whole with the skateboard beam below it; The slide is fixed on the dock surface through a horse plate; baffles are arranged on both sides of the top surface of the slide.

2. The connecting frame device for displacement of a large steel structure bridge according to claim 1 is characterized in that: The number of the connecting supports is greater than or equal to 3.

3. The connecting frame device for displacement of a large steel structure bridge according to claim 2 is characterized in that: The connecting frame body includes longitudinal connecting pipes whose number matches the connecting supports.

4. The connecting frame device for displacement of a large steel structure bridge according to claim 2 is characterized in that: The connecting supports are connected via a transverse connecting pipe.

5. The connecting frame device for displacement of a large steel structure bridge according to claim 4 is characterized in that: A toggle plate is provided between the connecting support and the transverse connecting pipe.

6. The connecting frame device for displacement of a large steel structure bridge according to claim 1, characterized in that: The height adjustment structure is an oblique wedge wooden block.

7. The connecting frame device for displacement of a large steel structure bridge according to claim 1 is characterized in that: The length of the connecting frame body is between 55 meters and 57 meters, and the width is between 29 meters and 31 meters.

8. A method for using a connecting frame device for displacement of a large steel structure bridge, characterized in that: The following steps are involved: 1) Before preparing for sliding, the slideway in the connecting frame device for displacement of a large steel structure bridge as described in any one of claims 1 to 7 is laid on the dock surface, and the dock surface and the slideway are fixed with the horse plate; 2) The sea-side support frame and the land-side support frame are removed, and the weight of the sea-side support frame, the land-side support frame and the main span is transferred to the slideway; 3) arranging the slide beam on the slideway, and adjusting the center line of the slide beam to coincide with the center line of the slideway; 4) Installing the connecting support, adding the height adjustment structure between the connecting support and the skateboard beam, and adjusting the bottom surface height of the connecting support to be level with the bottom surfaces of the sea-side support frame and the land-side support frame; 5) Lofting the actual gap between the connecting support and the skateboard beam, installing the fixing seat and the fixing plate to form the support structure; 6) Install the connecting frame body, and align the ends of the connecting frame with the internal ribs of the structural member by using brackets; 7) After installation, the sea-side support frame pulls or pushes the land-side support frame through the connecting frame device to slide along the slideway.

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