Arch springing device for shed type truss sliding construction and sliding construction method

Abstract

The invention discloses an arch foot device for shed type truss sliding construction and a sliding construction method, belongs to the technical field of truss sliding construction, and solves the problem that an existing arch foot support is not suitable for sliding construction. The device specifically comprises an arch foot support, the top of the arch foot support supports a truss structure, and the bottom of the arch foot support is detachably connected to a sliding insert panel; the bottom of the sliding embedded plate is slidably connected with a sliding rail which is fixed in the concrete foundation. In the sliding construction method, in the sliding construction stage of the truss structure, the sliding panel moves along the sliding rail to drive the arch foot support and the truss structure to slide; a spherical hinge support is not used in the sliding construction stage, and the structural stability is relatively high; and after the sliding construction is finished, the sliding panel and the sliding rail can be directly detached and the spherical hinge support can be replaced after the truss structure is supported by the jack, so that the construction efficiency is high. After the spherical hinge support is replaced, the arch foot support can be applied to the normal use stage of the truss structure, the structure does not need to be modified too much, and construction is efficient, convenient and fast.

Description

Technical Field

[0001] This invention relates to the field of truss sliding construction technology, and in particular to an arch foot device and sliding construction method for shed truss sliding construction. Background Technology

[0002] Sliding construction technology is a construction method that uses traction or jacking devices to slide large structures or components along a pre-set track to the designed position. It is a new technology suitable for constructing large-span structures in confined spaces. Arch foot supports, as supporting components, are installed on both sides of the truss steel structure and transmit vertical and horizontal forces from the superstructure downwards through members, ensuring the stress performance and overall stability of the truss structure.

[0003] During the sliding construction phase, a sliding device is installed at the bottom of the arch foot support. This device is slidably connected to the sliding rails, allowing the truss structure to be pushed and slid to the designated area via the rails. After the sliding construction is completed, the sliding device and rails at the bottom of the arch foot support need to be removed, allowing the truss steel structure to rest on the concrete foundation.

[0004] In existing technologies, the bottom of truss structures uses ordinary arch foot supports, which are directly welded with sliding shoes. After the sliding work is completed and the sliding rails and temporary support devices are removed, the welded connection between the sliding shoes and the truss must be cut. Therefore, existing technologies lack arch foot supports specifically designed for sliding construction. Ordinary arch foot supports are unsuitable for sliding construction, causing inconvenience to the construction of truss structures, and improvements are necessary. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an arch foot device and a sliding construction method for shed truss sliding construction, solving the problem that existing arch foot supports are not suitable for sliding construction.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An arch foot device for sliding construction of a truss structure includes an arch foot support, the top of which supports the truss structure, and the bottom of which is detachably connected to a sliding panel; the bottom of the sliding panel is slidably connected to a slide rail, and the bottom of the slide rail is fixed in a concrete foundation.

[0007] In this design, during the sliding construction phase, the sliding panel moves along the guide rail, causing the arch foot support and the truss structure to slide. The arch foot support is used during the sliding construction phase, instead of a ball joint support, resulting in relatively high structural stability. After the sliding construction is completed, the sliding panel and guide rail can be directly disassembled after the truss structure is supported by jacks, leading to high construction efficiency. After replacing the ball joint support, the arch foot support can be used during the normal service phase of the truss structure without requiring extensive structural modifications, making construction convenient.

[0008] Furthermore, the arch foot support includes a hemispherical steel plate and a supporting base plate; the top of the hemispherical steel plate is welded with chords and web members of a truss structure; the bottom of the hemispherical steel plate is fixedly connected to the supporting base plate; the bottom of the supporting base plate is supported on a sliding plate.

[0009] In this design, the hemispherical steel plate can improve the load-bearing capacity of the truss structure, and the hemispherical shape can distribute the weight of the truss structure, making it easier to weld the chords and web members to the side of the hemispherical steel plate.

[0010] Furthermore, the interior of the hemispherical steel plate is provided with four internal reinforcing ribs, which are welded together in a cross shape, with the included angle between two adjacent internal reinforcing ribs being 90°. Multiple outer reinforcing ribs are welded between the outer wall of the hemispherical steel plate and the top of the supporting base plate, and these ribs are distributed circumferentially along the outer wall of the hemispherical steel plate.

[0011] In this design, four inner reinforcing ribs support the hemispherical steel plate, increasing its support strength; an outer reinforcing rib is welded between the hemispherical steel plate and the supporting base plate to prevent local buckling of the supporting base plate.

[0012] Furthermore, stiffening ribs are welded to both sides of the chord and web members, and the bottom of the stiffening ribs is connected to a hemispherical steel plate.

[0013] In this design, stiffening ribs enhance the connection strength between the chords and web members and the hemispherical steel plate.

[0014] Furthermore, the sliding panel includes a support panel, the top of which has a groove, and the bottom of the support base plate is embedded in the groove at the top of the support panel; ribs are welded to both sides of the support panel; two triangular limiting plates are arranged opposite each other at the bottom of the support panel, and arc-shaped sliding blocks are connected to the opposite surfaces of the two triangular limiting plates. The bottom of the support plate is slidably mounted on the slide rail, and two triangular limiting plates are located on both sides of the slide rail. Two sliding blocks are slidably connected to both sides of the web of the slide rail.

[0015] In this design, the rib plate ensures sufficient strength for the connection between the triangular limiting plate and the support plate; the triangular limiting plate and the sliding block are slidably mounted on both sides of the rail web, supporting the horizontal sliding of the arch foot support.

[0016] Furthermore, the concrete foundation is in the shape of a transposed trapezoid, with the upper base of the trapezoid facing the interior of the truss structure. The bottom of the slide rail is welded with a support base plate, which is embedded in the concrete foundation.

[0017] In this design, the concrete foundation is a transposed trapezoid, which is beneficial for the transmission of internal forces in the truss structure and increases the lateral resistance of the truss structure.

[0018] Furthermore, an L-shaped support side stop is welded to the side of the hemispherical steel plate near the truss structure; the bottom of the support side stop abuts against the side of the concrete foundation facing the truss structure.

[0019] In this scheme, a support side stop is set on one side of the hemispherical steel plate, and the support side stop forms a limit between the concrete foundation to prevent the arch foot support from horizontal displacement during unloading.

[0020] Secondly, based on the arch foot device for sliding construction of a truss provided in the first aspect, the present invention provides a sliding construction method for sliding construction of a truss, comprising the following steps: Step S1: Weld the unloading bracket onto the arch foot support; Step S2: Use a jack to lift the unloading bracket. After lifting, remove the sliding plate and slide rail, place the ball joint support at the bottom of the arch foot support, and retract the jack. Step S3: Weld the ball hinge support and the arch foot support together to form a whole, and the construction is completed.

[0021] In this scheme, the truss structure is pushed and slid to the designated area by sliding rails. After the sliding construction is completed, the truss structure is unloaded by jacks. After unloading, the sliding plate and sliding rail at the bottom of the arch foot support are removed, and the sliding device at the bottom of the arch foot support is replaced with a ball joint support. The arch foot support, ball joint support and concrete foundation are connected to form a whole, and the construction of the truss structure is completed. The truss structure then enters the normal use stage.

[0022] Further, step S1 includes the following steps: Step S101: Remove the slide rails on both sides of the arch foot support; Step S102: Weld two unloading brackets on both sides of the hemispherical steel plate of the arch foot support along the direction of the slide rail; Step S103: Set leveling blocks on the concrete foundation, with the leveling blocks located directly below the unloading bracket; Step S104: Set up the jack on the leveling block.

[0023] Further, step S2 includes the following steps: Step S201: Use jacks to lift the arch foot support at the unloading bracket position. When lifting, each arch foot support of the truss structure is raised synchronously. Step S202: After lifting to the set height, remove the sliding panel; Step S203: Place the ball hinge support at the designated position below the arch foot support; Step S204: Retract the jacks until each arch foot support of the truss structure is stably supported on the ball joint support.

[0024] The beneficial effects of this invention are: The arch foot device for sliding construction of shed trusses provided by this invention can be applied to the sliding construction stage of shed steel structure workshops; after the sliding construction is completed, the sliding plate and slide rail are unloaded and the ball joint support is replaced, and the replaced arch foot support can be used in the normal use stage; it realizes the universality of the sliding construction stage and the normal use stage, without making too many modifications to the structure, and the construction is convenient.

[0025] The sliding construction method of this invention improves the construction efficiency of truss structures during the sliding construction phase. Furthermore, since no ball joint supports are used during this phase, the structural stability is relatively high. Unloading is achieved using jacks during the disassembly of the sliding rails, and side stops are installed at the supports during the unloading phase. This ensures a high safety factor and high construction precision when replacing the ball joint supports. After replacing the ball joint supports, the arch foot supports, ball joint supports, and concrete foundation are connected to form a unified structure, completing the construction of the truss structure and allowing it to enter the normal service phase. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of an arch foot device for sliding construction of a shed truss according to the present invention; Figure 2 This is a schematic diagram of the arch foot support in this invention; Figure 3 for Figure 2 Cross-sectional view of section AA; Figure 4 This is a schematic diagram of the sliding panel in this invention; Figure 5 This is a schematic diagram of the structure in Example 2 where unloading brackets are installed on both sides of the arch foot support; Figure 6 This is a schematic diagram of the structure for disassembling the sliding panel and slide rail and installing the ball joint support in Example 2; Figure 7 This is a schematic diagram of the structure on the pre-spherical hinge support of the arch foot support in Example 2.

[0027] Figure label: 1. Arch foot support; 11. Hemispherical steel plate; 12. Support base plate; 13. Inner reinforcing rib plate; 14. Outer reinforcing rib plate; 15. Stiffening rib; 2. Sliding insert plate; 21. Support insert plate; 22. Rib plate; 23. Triangular limiting plate; 24. Sliding block; 3. Slide rail; 31. Support base plate; 4. Concrete foundation; 51. Chord member; 52. Web member; 6. Support side stop; 7. Unloading bracket; 8. Leveling pad; 9. Jack; 10. Ball joint support; Detailed Implementation The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Specific embodiments of the present invention are described below to facilitate understanding by those skilled in the art. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various modifications are obvious as long as they fall within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0028] Example 1 like Figure 1 As shown, this embodiment provides an arch foot device for the sliding construction of a truss structure. This arch foot device is specifically designed for the sliding and service stages of the truss structure and is suitable for the sliding construction of truss structures. Specifically, it includes: 1. Arch foot support, 2. Sliding plate, 3. Slide rail, and 4. Concrete foundation; The arch foot support 1 supports the truss structure at its top, and its bottom is detachably connected to the sliding plate 2. The bottom of the sliding plate 2 is slidably connected to the slide rail 3, which is fixed within the concrete foundation 4. During the sliding construction phase, the sliding plate 2 moves along the slide rail 3, causing the arch foot support 1 and the truss structure to slide. After the sliding construction is completed, the sliding plate 2 and slide rail 3 can be directly removed after the truss structure is supported by the jack 9, resulting in high construction efficiency. After replacing the ball joint support 10, the arch foot support 1 can be used in the normal service phase of the truss structure without requiring extensive structural modifications, making construction convenient.

[0029] like Figure 2 As shown, the arch foot support 1 includes a hemispherical steel plate 11 and a supporting base plate 12; the top of the hemispherical steel plate 11 is welded with the chord members 51 and web members 52 of the truss structure; the bottom of the hemispherical steel plate 11 is fixedly connected to the supporting base plate 12; the bottom of the supporting base plate 12 is supported on the sliding plate 2; the hemispherical steel plate 11 can improve the load-bearing capacity of the truss structure, and the hemispherical shape can distribute the gravity of the truss structure, which facilitates the welding of the chord members 51 and web members 52 to the side of the hemispherical steel plate 11.

[0030] like Figure 3 As shown, the interior of the hemispherical steel plate 11 is provided with four inner reinforcing ribs 13, which are welded together in a cross shape, with the included angle between two adjacent inner reinforcing ribs 13 being 90°; the four inner reinforcing ribs 13 support the hemispherical steel plate 11 and increase the support strength of the hemispherical steel plate 11.

[0031] Multiple outer reinforcing ribs 14 are welded between the outer wall of the hemispherical steel plate 11 and the top of the supporting base plate 12. The multiple outer reinforcing ribs 14 are distributed circumferentially along the outer wall of the hemispherical steel plate 11 to prevent local buckling of the supporting base plate 12.

[0032] Both sides of the chord member 51 and the web member 52 are welded with stiffening ribs 15. The bottom of the stiffening ribs 15 is connected to the hemispherical steel plate 11. The stiffening ribs 15 can enhance the connection strength between the chord member 51 and the web member 52 and the hemispherical steel plate 11.

[0033] like Figure 4 As shown, the sliding plate 2 includes a support plate 21, a triangular limiting plate 23, and a sliding block 24. The top of the support plate 21 has a groove, and the bottom of the support base plate 12 is embedded in the groove at the top of the support plate 21. Ribs 22 are welded to both sides of the support plate 21, and the ribs 22 can ensure that the connection between the triangular limiting plate 23 and the support plate 21 has sufficient strength. Two triangular limiting plates 23 are arranged opposite each other at the bottom of the support plate 21, and arc-shaped sliding blocks 24 are connected to the opposite surfaces of the two triangular limiting plates 23. The bottom of the support plate 21 is slidably mounted on the slide rail 3, the two triangular limiting plates 23 are located on both sides of the slide rail 3, and the two sliding blocks 24 are slidably connected to both sides of the rail web of the slide rail 3, which can support the horizontal sliding of the arch foot support 1.

[0034] The concrete foundation 4 is shaped like a transposed trapezoid, with the upper base facing the interior of the truss structure. This design facilitates the transfer of internal forces within the truss structure and increases its lateral resistance. A support base plate 31 is welded to the bottom of the slide rail 3, and the support base plate 31 is embedded inside the concrete foundation 4.

[0035] An L-shaped support side stop 6 is welded to the side of the hemispherical steel plate 11 closest to the truss structure; the bottom of the support side stop 6 abuts against the side of the concrete foundation 4 facing the truss structure. The support side stop 6 and the concrete foundation 4 form a limiting relationship to prevent the arch foot support 1 from undergoing horizontal displacement during unloading.

[0036] Example 2 This embodiment, based on the arch foot device for sliding construction of a truss provided in Embodiment 1, provides a sliding construction method for sliding construction of a truss. In this sliding construction method, the truss structure is pushed and slid to a designated area via a sliding rail. After the sliding construction is completed, the truss structure is unloaded using jacks 9. After unloading, the sliding plate 2 and sliding rail 3 at the lower part of the arch foot support 1 are removed, and the sliding device at the lower part of the arch foot support 1 is replaced with a ball joint support 10. The arch foot support 1, the ball joint support 10, and the concrete foundation 4 are connected to form a whole, completing the construction of the truss structure, and the truss structure enters the normal use stage. The steps are as follows: Step S1: As Figure 5As shown, the unloading bracket 7 is welded onto the arch foot support 1; specifically including: Step S101: Remove the slide rails 3 on both sides of the arch foot support 1; Step S102: Weld two unloading brackets 7 on both sides of the hemispherical steel plate 11 of the arch foot support 1 along the direction of the slide rail 3; Step S103: Set leveling blocks 8 on the concrete foundation 4, with the leveling blocks 8 located directly below the unloading bracket 7; Step S104: Set the jack 9 on the leveling block 8.

[0037] Step S2: As Figure 6 As shown, the unloading bracket 7 is lifted using jack 9. After lifting, the sliding plate 2 and slide rail 3 are removed, the ball hinge support 10 is placed under the arch foot support 1, and the jack 9 is retracted. Specifically, this includes: Step S201: At the unloading bracket 7 position, use jack 9 to lift the arch foot support 1. When lifting, each arch foot support 1 of the truss structure is raised synchronously. Step S202: After lifting to the set height, remove the sliding panel 2; Step S203: Place the ball hinge support 10 at the designated position below the arch foot support 1; Step S204: Retract jack 9 until each arch foot support 1 of the truss structure is stably supported on the ball joint support 10.

[0038] Step S3: As Figure 7 As shown, the ball hinge support 10 and the arch foot support 1 are welded together as a whole, and the construction is completed.

[0039] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of the invention and should be understood as not limiting the scope of protection of the invention to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the technical teachings disclosed herein without departing from the spirit of the invention, and these modifications and combinations are still within the scope of protection of the invention.

Claims

1. An arch foot device for sliding construction of a shed truss, characterized in that: Includes an arch foot support (1), the top of which supports a truss structure, and the bottom of which is detachably connected to a sliding panel (2); the bottom of the sliding panel (2) is slidably connected to a slide rail (3), and the bottom of the slide rail (3) is fixed in a concrete foundation (4).

2. The arch foot device for sliding construction of a shed truss according to claim 1, characterized in that: The arch foot support (1) includes a hemispherical steel plate (11) and a supporting base plate (12); the top of the hemispherical steel plate (11) is welded with the chord (51) and web member (52) of the truss structure; the bottom of the hemispherical steel plate (11) is fixedly connected to the supporting base plate (12); the bottom of the supporting base plate (12) is supported on the sliding panel (2).

3. The arch foot device for sliding construction of a shed truss according to claim 2, characterized in that: The hemispherical steel plate (11) is provided with four inner reinforcing ribs (13), which are welded together in a cross shape, and the included angle between two adjacent inner reinforcing ribs (13) is 90°. Multiple outer reinforcing ribs (14) are welded between the outer wall of the hemispherical steel plate (11) and the top of the supporting base plate (12), and the multiple outer reinforcing ribs (14) are distributed circumferentially along the outer wall of the hemispherical steel plate (11).

4. The arch foot device for sliding construction of a shed truss according to claim 3, characterized in that: Both sides of the chord (51) and the web member (52) are welded with stiffening ribs (15), and the bottom of the stiffening ribs (15) is connected to the hemispherical steel plate (11).

5. The arch foot device for sliding construction of a shed truss according to claim 2, characterized in that: The sliding panel (2) includes a support panel (21), the top of which has a groove, and the bottom of the support base plate (12) is embedded in the groove at the top of the support panel (21); ribs (22) are welded to both sides of the support panel (21); two triangular limiting plates (23) are arranged opposite each other at the bottom of the support panel (21), and arc-shaped sliding blocks (24) are connected to the opposite surfaces of the two triangular limiting plates (23). The bottom of the support plate (21) is slidably mounted on the slide rail (3), the two triangular limiting plates (23) are located on both sides of the slide rail (3), and the two sliding blocks (24) are slidably connected to both sides of the rail web of the slide rail (3).

6. The arch foot device for sliding construction of a shed truss according to claim 2, characterized in that: The concrete foundation (4) is in the shape of a transposed trapezoid, with the upper base of the trapezoid facing the interior of the truss structure; The bottom of the slide rail (3) is welded with a support base plate (31), which is embedded inside the concrete foundation (4).

7. The arch foot device for sliding construction of a shed truss according to claim 6, characterized in that: The hemispherical steel plate (11) is welded with an L-shaped support side block (6) on the side near the truss structure; the bottom of the support side block (6) abuts against the side of the concrete foundation (4) facing the truss structure.

8. A sliding construction method for an arch foot device used in the sliding construction of a truss structure according to any one of claims 1 to 7, characterized in that, Includes the following steps: Step S1: Weld the unloading bracket (7) onto the arch foot support (1); Step S2: Use jack (9) to lift the unloading bracket (7), remove the sliding plate (2) and slide rail (3) after lifting, place the ball joint support (10) at the bottom of the arch foot support (1), and retract the jack (9). Step S3: Weld the ball joint support (10) and the arch foot support (1) into a whole, and the construction is completed.

9. The sliding construction method for the arch foot device used in the sliding construction of a truss structure according to claim 8, characterized in that, Step S1 includes the following steps: Step S101: Remove the slide rails (3) on both sides of the arch foot support (1); Step S102: Weld two unloading brackets (7) on both sides of the hemispherical steel plate (11) of the arch foot support (1) along the direction of the slide rail (3). Step S103: Set a leveling pad (8) on the concrete foundation (4), the leveling pad being located directly below the unloading bracket (7); Step S104: Set a jack (9) on the leveling pad (8).

10. The sliding construction method for the arch foot device used in the sliding construction of a truss structure according to claim 9, characterized in that, Step S2 includes the following steps: Step S201: At the unloading bracket (7) position, the jack (9) is used to lift the arch foot support (1), and each of the arch foot supports (1) of the truss structure is lifted synchronously during the lifting. Step S202: After lifting to the set height, remove the sliding panel (2); Step S203: Place the ball joint support (10) at the designated position below the arch foot support (1); Step S204: Retract the jack (9) until each arch foot support (1) of the truss structure is stably supported on the ball joint support (10).

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