Long-distance integral sliding device for bridge construction and sliding method of long-distance integral sliding device

Abstract

The invention provides a long-distance integral sliding device for bridge construction, comprising a sliding platform on which a sliding rail is fixedly arranged; the sliding shoes are arranged in the movement direction of a truss of the bridge, every two adjacent sliding shoes in the movement direction are connected through deformed steel bars, the bottom of each sliding shoe is provided with a limiting disc, each limiting disc comprises a positioning block capable of moving upwards, and when the positioning blocks move to the limiting position, the positioning blocks can abut against the flanges of the sliding rails; the sliding platform is provided with a plurality of reserved fixing positions in the length direction, the jack is detachably connected with the reserved fixing positions, and the sliding shoes are connected with the jack through steel strands. The mode that the positioning blocks are arranged on the two sides of the sliding shoes is adopted, so that the sliding shoes and the sliding rails are fixed in the stopping process of the bridge truss, and accidents caused by deviation of the spliced bridge truss in the subsequent connecting process of the bridge truss and the completed truss are prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a long-distance integral sliding device and a sliding method thereof for bridge construction. Background Art

[0002] During the construction of large bridges, some bridges are built with steel truss structures. Existing steel truss bridges usually pre-assemble the truss structure at one end of the bridge, and then move the truss to the predetermined position by sliding. However, since the truss structure is heavy and the distance to be moved is long, during the dragging and sliding process, the sliding shoes under the truss are prone to problems such as uncoordinated movement, "slipping" during startup, and running off track and jamming, resulting in uneven movement between the trusses of the main truss, and even lateral deviation, thereby sharply increasing the construction risk. Summary of the invention

[0003] In view of this, the present invention aims to provide a long-distance integral sliding device and a sliding method thereof for bridge construction, so as to improve the safety of the truss during movement.

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

[0005] A long-distance integral sliding device for bridge construction, comprising

[0006] A sliding platform, on which a slide rail is fixed;

[0007] A plurality of sliding shoes are arranged along the movement direction of the bridge truss, and each two adjacent sliding shoes along the movement direction are connected by threaded steel bars, and a limiting plate is arranged at the bottom of each sliding shoe, and the limiting plate includes a positioning block that can move upward, and when the positioning block moves to the limit position, the positioning block can be tightly pressed against the flange of the slide rail;

[0008] The sliding platform is provided with a plurality of reserved fixing positions along the length direction, and the jack is detachably connected to each of the reserved fixing positions, and the sliding shoe is connected to the jack via a steel strand.

[0009] Furthermore, the limit plate also includes a limit platform extending outward from the bottom of the sliding shoe, a screw rod passes through the limit platform, and the positioning block is fixedly connected to the bottom end of the screw rod, a nut is screwed to the top end of the screw rod, and the bottom end surface of the nut can be against the limit platform.

[0010] Furthermore, a transverse limiting slide rail is provided at the bottom of the slide shoe, which includes a guide rail longitudinal beam arranged along the movement direction of the slide shoe, and the guide rail longitudinal beam can be against the sliding platform.

[0011] Furthermore, the transverse limiting slide rail also includes a connecting transverse rib, and the guide rail longitudinal beam is fixedly connected to the slide shoe via the connecting transverse rib.

[0012] Furthermore, an anchor capable of anchoring the steel strand or threaded steel is provided in the sliding shoe.

[0013] Furthermore, the jack is fixed on the reaction seat, a reserved hole is opened on the reserved fixing position, and the reaction seat and the reserved hole are detachably connected by bolts.

[0014] Based on the above-mentioned long-distance integral sliding device for bridge construction, the present application also provides a long-distance integral sliding method for bridge construction, comprising:

[0015] S1: Install multiple sliding shoes at the initial end of the sliding platform so that the sliding shoes can move along the slide rails on the sliding platform, connect the multiple sliding shoes into a whole through threaded steel bars, install the jack at the reserved fixing position closest to the initial end, and connect the sliding shoes to the ejection part of the jack through steel strands;

[0016] S2: Assembling the first section of the bridge truss on the sliding shoe;

[0017] S3: Start the jack to drag the sliding shoe, driving the first section of the bridge truss to move toward the end of the sliding platform until the initial end of the sliding platform vacates the splicing space for the next section of the bridge truss;

[0018] S4: Install a new sliding shoe in the splicing space and connect the new sliding shoe with the sliding shoe under the previous bridge truss; then assemble the next bridge truss on the new sliding shoe;

[0019] S5: Remove the jack and install it in the next reserved fixed space along the movement direction of the sliding shoe, so that the jack can drag the bridge truss to move;

[0020] S6: Repeat S3-S5 until the bridge truss is assembled.

[0021] Furthermore, step S3 also includes step S31, after dragging the sliding shoe to the initial end of the sliding platform to free up the splicing space, moving the positioning block so that it is tightly against the flange of the sliding rail.

[0022] Furthermore, in step S5, it also includes controlling the positioning block to separate from the slide rail, and then the jack drags the bridge truss to move.

[0023] Compared with the prior art, the long-distance integral sliding device and sliding method for bridge construction described in the present invention have the following advantages:

[0024] The present invention adopts a method of arranging positioning blocks on both sides of the sliding shoe, so that the sliding shoe and the sliding rail are fixed during the stopping process of the bridge truss, thereby preventing the subsequent bridge truss from being connected with the previously completed truss, which causes the bridge truss to deviate after splicing and causes accidents;

[0025] The lateral limit rail is used to guide the sliding shoe to avoid deviation during the movement of the sliding shoe and cause safety accidents.

[0026] By using a mobile jack to drag the truss in sections multiple times, the effective length of the steel strand between the jack and the truss can be shortened, making the force transmission more stable and avoiding the vibration of the steel strand from affecting the movement of the truss. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 Provide a schematic diagram of the overall structure of the bridge truss construction;

[0029] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0030] Figure 3 This is the schematic diagram of the truss after translation;

[0031] Figure 4 It is a schematic diagram of the end face of the sliding shoe;

[0032] Figure 5 A side view of the sliding shoe.

[0033] Description of reference numerals:

[0034] 1-sliding platform; 11-slide rail; 12-reserved fixing position; 121-reserved hole; 13-joining space; 2-slide shoe; 21-anchor; 22-limit plate; 221-limit platform; 222-nut; 223-positioning block; 224-screw; 23-lateral limit slide rail; 231-guide rail longitudinal beam; 232-transverse rib; 3-truss; 4-jack; 41-reaction seat; 5-steel strand; 6-threaded steel bar. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] The long-distance integral sliding device for bridge construction described in the present invention comprises a sliding platform 1, on which a sliding rail 11 is fixedly arranged. In the present embodiment, the sliding platform 1 is a concrete structure or a temporarily arranged frame erected on a bridge pier or a floating ship on the water surface. The sliding rail 11 is fixedly arranged on the concrete structure or the frame, and a plurality of sliding rails 11 can be arranged as needed; a plurality of sliding shoes 2 are arranged along the movement direction of the bridge truss 3, and the sliding shoes 2 are arranged on the sliding rail 11. Each adjacent two sliding shoes 2 along the movement direction are connected by threaded steel bars 6 respectively, and a limiting plate 22 is respectively arranged at the bottom of each sliding shoe 2. The limiting plate 22 comprises a positioning block 223 that can move upward, and when the positioning block 223 moves to the limit position, the positioning block 223 can be tightly against the flange of the sliding rail 11. In the present embodiment, each sliding shoe 2 is respectively provided with a positioning plate 223. An anchor hole or anchor 21 is provided for anchoring the steel strand 5. The specific anchoring method between the threaded steel 6 or the steel strand 5 and the anchor 21 is the existing technology and will not be repeated here. The limit plate 22 includes a limit platform 221 extending outward from the bottom of the sliding shoe 2, a screw rod 224 passes through the limit platform 221, and the positioning block 223 is fixedly connected to the bottom end of the screw rod 224, and a nut 222 is screwed on the top end of the screw rod 224. The bottom end face of the nut 222 can abut against the limit platform 221, and when the nut 222 rotates, the screw rod 224 can move in the vertical direction, so that the positioning block 223 can move upward or downward, and when the positioning block 223 moves upward to the extreme position, the positioning block 223 can be tightly abutted against the flange of the slide rail 11, so that the position of the sliding shoe 2 is fixed to prevent the sliding shoe 2 from slipping without the action of external force.

[0040] The sliding platform 1 is provided with a plurality of reserved fixing positions 12 along the length direction. In the present embodiment, each of the reserved fixings includes a plurality of reserved holes 121, and a reaction seat 41 can be screwed with the reserved hole 121 by bolts, so that the reaction seat 41 is detachably connected with the reserved fixing position 12. A jack 4 is fixedly arranged on the reaction seat 41, and the jack 4 is a tension through-hole jack 4. The jack 4 is fixed to the reserved fixing position 12 by the reaction seat 41. The steel strand 5 is fixedly connected with the tension through-hole jack 4. Those skilled in the art should know the specific structure and installation method of the reaction seat 41, which will not be described here. A transverse limiting slide rail 23 is provided at the bottom of the sliding shoe 2, which includes a guide rail longitudinal beam 231 arranged along the movement direction of the sliding shoe 2, and the guide rail longitudinal beam 231 can be against the sliding platform 1, and the transverse limiting slide rail 23 also includes a connecting transverse rib 232, and the guide rail longitudinal beam 231 is fixedly connected to the sliding shoe 2 by connecting the transverse rib 232. In this embodiment, each slide shoe 2 is provided with two transverse limiting rails 23, and the two transverse limiting rails 23 are respectively placed on both sides of the slide shoe 2, and the slide rail 11 is placed between the two transverse limiting rails 23 to prevent the slide shoe 2 and the slide rail 11 from offsetting.

[0041] Based on the above-mentioned long-distance integral sliding device for bridge construction, the present application also provides a long-distance integral sliding method for bridge construction, comprising:

[0042] S1: multiple sliding shoes 2 are installed at the initial end of the sliding platform 1, so that the sliding shoes 2 can move along the sliding rails 11 on the sliding platform 1, and the multiple sliding shoes 2 are connected into a whole through the threaded steel bar 6, and the jack 4 is installed on the reserved fixing position 12 closest to the initial end, and the sliding shoe 2 is connected to the ejection part of the jack 4 through the steel strand 5; the multiple sliding shoes 2 are connected into a whole, so that the upper surface of the multiple sliding shoes 2 can be used as a construction platform;

[0043] S2: Assembling the first section of the bridge truss 3 on the sliding shoe 2. In this embodiment, a crane is provided on the initial end of the sliding platform 1, and the relevant parts of the bridge truss 3 can be arranged on the construction platform of the sliding platform 1 by the crane;

[0044] S3: After the first section of the bridge truss 3 is completed, the jack 4 is started to drag the sliding shoe 2, driving the first section of the bridge truss 3 to move toward the rear end of the sliding platform 1, until the initial end of the sliding platform 1 vacates the splicing space 13 of the next section of the bridge truss 3;

[0045] S31: After the sliding shoe 2 is dragged to the initial end of the sliding platform 1 to free up the splicing space 13, the positioning block 223 is moved so that it is tightly against the flange of the sliding rail 11 to prevent the sliding shoe 2 under the first bridge truss 3 from being affected during the subsequent installation of the new sliding shoe 2;

[0046] S4: installing a new sliding shoe 2 in the splicing space 13, and connecting the new sliding shoe 2 with the sliding shoe 2 under the previous bridge truss 3; and then assembling the next bridge truss 3 on the new sliding shoe 2;

[0047] S5: Remove the jack 4 and install it in the next reserved fixed space along the movement direction of the sliding shoe 2; then separate the positioning block 223 of the sliding shoe 2 under the bridge truss 3 from the sliding rail 11, so that the jack 4 can drag the bridge truss 3 to move;

[0048] S6: Repeat S3-S5 until the bridge truss 3 is assembled. By moving the jack 4 multiple times, the distance between the jack 4 and the assembled bridge truss 3 is shorter each time, so that the force transmission on the steel strand 5 is more stable, and the stability of the movement of the sliding shoe 2 is improved. At the same time, the wind direction limiting slide rail 11 on the sliding shoe 2 is used to prevent the sliding shoe 2 from lateral deviation. The limiting plate 22 is used to prevent the sliding shoe 2 from being affected and displaced during multiple bridge truss 3 splicing processes, which affects the subsequent bridge truss 3 splicing and causes danger.

[0049] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A long-distance integral sliding device for bridge construction, characterized in that: It includes a sliding platform, on which a sliding rail is fixed; A plurality of sliding shoes are arranged along the movement direction of the bridge truss, and each two adjacent sliding shoes along the movement direction are connected by threaded steel bars, and a limiting plate is arranged at the bottom of each sliding shoe, and the limiting plate includes a positioning block that can move upward, and when the positioning block moves to the limit position, the positioning block can be tightly pressed against the flange of the slide rail; The sliding platform is provided with a plurality of reserved fixing positions along the length direction, and the jack is detachably connected to each of the reserved fixing positions, and the sliding shoe is connected to the jack via a steel strand.

2. A long-distance integral sliding device for bridge construction according to claim 1, characterized in that: The limit plate also includes a limit platform extending outward from the bottom of the sliding shoe, a screw rod passes through the limit platform, and the positioning block is fixedly connected to the bottom end of the screw rod. A nut is screwed to the top end of the screw rod, and the bottom end surface of the nut can abut against the limit platform.

3. The long-distance integral sliding device for bridge construction according to claim 1, characterized in that: A transverse limiting slide rail is provided at the bottom of the slide shoe, which includes a guide rail longitudinal beam arranged along the movement direction of the slide shoe, and the guide rail longitudinal beam can be against the sliding platform.

4. A long-distance integral sliding device for bridge construction according to claim 3, characterized in that: The transverse limit slide rail also includes a connecting transverse rib, and the guide rail longitudinal beam is fixedly connected to the slide shoe via the connecting transverse rib.

5. The long-distance integral sliding device for bridge construction according to claim 1, characterized in that: Anchors capable of anchoring steel strands or threaded steel bars are arranged in the sliding shoes.

6. The long-distance integral sliding device for bridge construction according to claim 1, characterized in that: The jack is fixed on the reaction seat, a reserved hole is opened on the reserved fixing position, and the reaction seat and the reserved hole are detachably connected by bolts.

7. A method for long-distance integral sliding in bridge construction, characterized in that: include S1: Install multiple sliding shoes at the initial end of the sliding platform so that the sliding shoes can move along the slide rails on the sliding platform, connect the multiple sliding shoes into a whole through threaded steel bars, install the jack at the reserved fixing position closest to the initial end, and connect the sliding shoes to the ejection part of the jack through steel strands; S2: Assembling the first section of bridge truss on the sliding shoe; S3: Start the jack to drag the sliding shoe, driving the first section of the bridge truss to move toward the end of the sliding platform until the initial end of the sliding platform vacates the splicing space for the next section of the bridge truss; S4: Install a new sliding shoe in the splicing space and connect the new sliding shoe with the sliding shoe under the previous bridge truss; then assemble the next bridge truss on the new sliding shoe; S5: Remove the jack and install it in the next reserved fixed space along the movement direction of the sliding shoe, so that the jack can drag the bridge truss to move; S6: Repeat S3-S5 until the bridge truss is assembled.

8. The method for long-distance integral sliding in bridge construction according to claim 7, characterized in that: Step S3 also includes step S31, after dragging the sliding shoe to the initial end of the sliding platform to free up a splicing space, moving the positioning block so that it is tightly against the flange of the sliding rail.

9. A method for long-distance integral sliding in bridge construction according to claim 8, characterized in that: In step S5, it also includes controlling the positioning block to separate from the slide rail, and then the jack drags the bridge truss to move.

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