A substation steel frame support

Abstract

The present invention discloses a substation steel frame support provided by an embodiment of the present invention, which is used to solve the problem in the prior art that large-span substation steel frames will generate temperature stress, increasing the possibility of fracture or deformation and causing safety accidents. It includes: The substation steel frame support is a left-right symmetric structure. Above the chevron column, a chevron column top plate is connected. Above the chevron column top plate, two circular tube columns are arranged. Above the circular tube columns, a circular tube column top plate is connected. A guide rail is arranged on the circular tube column top plate. The two circular tube columns are respectively connected to a beam joint plate. A guide groove is arranged below the end of the beam joint plate. The beam joint plate and the circular tube column top plate are slidably connected through the cooperation of the guide rail and the guide groove. The beneficial effects include: When there is thermal expansion and contraction due to temperature change, both the tuning fork column and the sliding connection can eliminate temperature stress; improve the safety and reliability of the frame, reduce the accident probability, and have great economic and social benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of power engineering structures, and particularly to a substation steel frame support. Background Art

[0002] Refer to Figure 1 As shown, the substation steel frame is composed of multiple frame nodes. Each frame node includes adjacent herringbone columns and the beam steel connecting between them. Its longitudinal or transverse length is very long, mostly exceeding 100 meters. This structure will expand and contract with temperature changes. Ordinary substation steel frame columns and steel frame beams are generally connected by bolts. When the temperature changes greatly and the expansion and contraction are restricted, large temperature stresses will be generated in the end frame columns and frame beams. For such large buildings that exceed the length of the temperature section specified in the steel structure design code, if no expansion and contraction treatment is carried out, or there is no safe and effective method for the temperature expansion joint node, the temperature stress cannot be completely released, and the large-span substation steel frame may break or be severely deformed, thus triggering serious safety accidents. Summary of the Invention

[0003] Embodiments of the present invention provide a substation steel frame support to solve the problem in the prior art that large-span substation steel frames will generate temperature stresses, increasing the possibility of fracture or deformation and triggering safety accidents.

[0004] Embodiments of the present invention provide a substation steel frame support as follows:

[0005] A substation steel frame support includes: herringbone columns, herringbone column top plates, circular tube columns, and circular tube column top plates; the substation steel frame support is a left-right symmetric structure. The herringbone column top plate is connected above the herringbone column. Two circular tube columns are arranged above the herringbone column top plate. The circular tube column top plate is connected above the circular tube columns. A guide rail is arranged on the circular tube column top plate. Each of the two circular tube columns is connected to a beam node plate. A guide groove is arranged below the end of the beam node plate. The beam node plate and the circular tube column top plate are slidably connected through the cooperation of the guide rail and the guide groove.

[0006] Preferably, limit bolts are arranged at both ends of the guide groove of the beam node plate to limit the sliding range of the guide groove on the guide rail.

[0007] Preferably, the guide rail arranged on the circular tube column top plate is a dovetail block guide rail, the guide groove arranged below the end of the beam node plate is a dovetail guide groove, and the sliding track of the beam node plate is on the straight line formed by connecting the centers of the top surfaces of the two circular tube columns.

[0008] Preferably, a vertical stiffening plate is arranged in the middle of the top end of the herringbone column. The substation steel frame support is symmetric with respect to the vertical stiffening plate, and a plurality of axial stiffening plates are evenly arranged on the surface of the top end of the herringbone column.

[0009] Preferably, a number of stiffening plates for the circular tube column are evenly arranged at the lower end of the circular tube column. The stiffening plates for the circular tube column are arranged perpendicular to the top plate of the herringbone column, welded to the top plate of the herringbone column on one side and welded to the surface of the circular tube column axially on the other side.

[0010] Preferably, a top plate stiffening plate connected to the circular tube column is arranged below the top plate of the circular tube column.

[0011] The beneficial effects of the present invention include: when thermal expansion and contraction occur due to temperature changes, a part of the temperature stress is eliminated through the sliding fit between the guide rail on the tuning fork column and the guide groove of the beam joint plate. When sliding to the limit position, the temperature stress is continuously eliminated through the tuning fork column within the same bay, without generating excessive bending stress on the lower herringbone column below, nor transmitting this stress to other adjacent bays; the application of this kind of substation steel frame support can improve the safety and reliability of the frame, reduce the accident probability, and has great economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of a substation steel frame in the prior art;

[0013] Figure 2 is a schematic structural diagram of the substation steel frame in the embodiment of the present invention

[0014] Figure 3 is a schematic structural diagram of the substation steel frame support in the embodiment of the present invention;

[0015] Figure 4 is Figure 3 a sectional view taken along the A-A position in

[0016] Figure 5 is Figure 3 a sectional view taken along the B-B position in

[0017] Figure 6 is a side view of the top plate of the circular tube column and the guide rail in the embodiment of the present invention;

[0018] Figure 7 is a top view of the top plate of the circular tube column and the guide rail in the embodiment of the present invention;

[0019] Figure 8 is a partial structural schematic diagram of the beam joint plate in the embodiment of the present invention;

[0020] Figure 9 is Figure 8 a sectional view taken along the C-C position in

[0021] Figure 10 is Figure 8 a sectional view taken along the D-D position in DETAILED DESCRIPTION OF THE INVENTION

[0022] In order to provide a solution for realizing a substation steel frame support that can effectively eliminate temperature stress, has a reasonable structure and high safety, the embodiment of the present invention provides a substation steel frame support. The preferred embodiments of the present invention will be described below with reference to the accompanying drawings of the specification.

[0023] Referring to Figure 2 As shown, for the substation steel frame constituted by the support in the embodiment of the present invention, beam node plates are arranged at both ends of the frame beam, and a tuning fork column is used for support above the herringbone column support. The tuning fork column is slidably connected to the beam node plate; specifically referring to Figures 3 - 10 As shown, the embodiment of the present invention provides a substation steel frame support, including: herringbone column 1, herringbone column top plate 2, circular tube column 3 and circular tube column top plate 4; the substation steel frame support is a left-right symmetric structure. The herringbone column 1 is connected to the herringbone column top plate 2 above, two circular tube columns 3 are arranged above the herringbone column top plate 2, the circular tube columns 3 are connected to the circular tube column top plate 4 above, a guide rail 5 is arranged on the circular tube column top plate 4, each of the two circular tube columns 3 is connected to a beam node plate 6, a guide groove 7 is arranged below the end of the beam node plate 6, and the beam node plate 6 and the circular tube column top plate 4 are slidably connected through the cooperation of the guide rail 5 and the guide groove 7.

[0024] Specifically, in the prior art, the herringbone column 1 is directly used as the support of the beam node plate 6. In the present invention, a tuning fork column formed by two circular tube columns 3 is used as the support of the beam node plate 6 on the herringbone column top plate 2. Some existing sliding supports still adopt the past support structure, and after the temperature expansion and contraction reach the limit deformation, it is easy to generate a large bending stress on the construction column; however, the tuning fork column can further absorb the temperature expansion and contraction stress when the temperature expansion and contraction deformation of the frame beam reaches the limit deformation during the temperature expansion and contraction process, and avoid generating a large bending stress on the herringbone column 1 below.

[0025] A circular tube column top plate 4 is arranged above the two circular tube columns 3 of the tuning fork column, a guide rail 5 is arranged on the circular tube column top plate 4, a guide groove 7 is arranged below the end of the beam node plate 6. The guide rail 5 arranged on the circular tube column top plate 4 is a dovetail block guide rail 5, the guide groove 7 arranged below the end of the beam node plate 6 is a dovetail guide groove 7, and the sliding track of the beam node plate 6 is on the straight line formed by connecting the centers of the top surfaces of the two circular tube columns 3. Each of the two circular tube columns 3 of the tuning fork column is connected to a beam node plate 6, and a sliding support is arranged for each bay, which can completely absorb the temperature stress in one bay of the frame by the frame beam and the tuning fork column in this bay and will not transfer it to other bays; the guide groove 7 is directly above the dovetail block guide rail 5, and is supported by the tuning fork column, with a reasonable and safe structure, and the sliding part will not be bent due to gravity deformation.

[0026] Limit bolts 12 are provided at both ends of the guide groove 7 of the beam gusset plate 6 to limit the sliding range of the guide groove 7 on the guide rail 5. And it also limits the separation of the guide groove 7 from the guide rail 5, that is, it limits the separation of the beam gusset plate 6 from the tuning fork column. Specifically, a groove is opened at the end of the beam gusset plate 6, the end of the beam gusset plate 6 is used to install the guide groove 7 on the guide rail 5, and a set of limit bolts 12 is installed at the end of the beam gusset plate 6 and perpendicular to the plane of the beam gusset plate 6 to limit the separation of the beam gusset plate 6 from the tuning fork column. Another set of limit bolts 12 is installed on the side of the guide groove 7 away from the end of the beam gusset plate 6 according to the sliding range of the beam gusset plate 6 on the tuning fork column;

[0027] A vertical stiffening plate 8 is provided in the middle of the top of the chevron column 1. The substation steel frame support is symmetric with respect to the vertical stiffening plate 8. A number of axial stiffening plates 9 are evenly arranged on the surface of the top of the chevron column 1. A number of circular tube column stiffening plates 10 are evenly arranged at the lower end of the circular tube column 3. The circular tube column stiffening plates 10 are arranged perpendicular to the chevron column top plate 2, welded to the chevron column top plate 2 on one side and welded to the surface of the circular tube column 3 axially on the other side. A top plate stiffening plate 11 connected to the circular tube column 3 is provided below the circular tube column top plate 4.

[0028] The construction method of the substation steel frame support provided by the embodiment of the present invention is specifically as follows:

[0029] Step 1: Shorten the chevron column 1 and add two circular tube columns 3 at the chevron column top plate 2 to form a tuning fork column;

[0030] Step 2: Set a guide rail 5 on the tuning fork column top plate. The guide of the guide rail 5 is on the connection line of the centers of the two circular tube column top plates 4;

[0031] Step 3: Set a guide groove 7 on the beam gusset plate 6 and install the guide rail 5 on the tuning fork column top plate into the guide groove 7 of the beam gusset plate 6;

[0032] Step 4: Install the limit bolts 12. Install a set of limit bolts 12 at the end of the beam gusset plate 6 and tighten them vertically on the beam gusset plate 6. The screw rod is used to limit the separation of the guide groove 7 from the guide rail 5. Install another set of limit bolts 12 on the side of the guide groove 7 away from the end of the beam gusset plate 6 and determine the distance between the two sets of limit bolts 12 according to the sliding range;

[0033] When the frame beam expands and contracts due to temperature effects, relative displacement occurs between the guide rail 5 and the guide groove 7. When the relative displacement between the guide rail 5 and the guide groove 7 is restricted by the limit bolts 12, the tuning fork column undergoes displacement. The two mechanisms jointly reduce the influence of temperature stress on the structural beam and the structural column, and try to eliminate the influence of temperature stress on the structural column.

[0034] In summary, the substation steel frame support in the present invention is used for the intermediate nodes in the substation steel frame and is used when there are beam gusset plates on both sides of the frame columns. For the side nodes, sliding can be achieved by setting guide rails and guide grooves at the upper end of the chevron columns, or the temperature stress can be eliminated only through the intermediate nodes. The structure is reasonable, not easily bent due to gravity during sliding, and the sliding effect is not affected. The temperature stress is eliminated by the tuning fork columns within the same bay. When the sliding limit is reached, excessive bending stress will not be generated on the lower chevron columns below. Applying this substation steel frame support can improve the safety and reliability of the frame, reduce the accident probability, and has great economic and social benefits.

[0035] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A substation steel frame support, characterized in that, Including: Herringbone columns, herringbone column top plates, circular tube columns and circular tube column top plates; The substation steel frame support is a left-right symmetric structure. The herringbone column is connected to the herringbone column top plate above. Two circular tube columns are arranged above the herringbone column top plate. The circular tube columns are connected to the circular tube column top plate above. A guide rail is arranged on the circular tube column top plate. The two circular tube columns are respectively connected to a beam joint plate. A guide groove is arranged below the end of the beam joint plate. The beam joint plate and the circular tube column top plate are slidably connected through the cooperation of the guide rail and the guide groove.

2. The substation steel frame support according to claim 1, characterized in that, Limit bolts are arranged at both ends of the guide groove of the beam joint plate to limit the sliding range of the guide groove on the guide rail.

3. The substation steel frame support according to claim 1, characterized in that, The guide rail arranged on the circular tube column top plate is a dovetail block guide rail. The guide groove arranged below the end of the beam joint plate is a dovetail guide groove. The sliding track of the beam joint plate is on the straight line formed by connecting the centers of the top surfaces of the two circular tube columns.

4. The substation steel framework support according to claim 1, wherein, A vertical stiffening plate is arranged in the middle of the top end of the herringbone column. The substation steel frame support is symmetric with respect to the vertical stiffening plate. A number of axial stiffening plates are evenly arranged on the surface of the top end of the herringbone column.

5. The substation steel frame support according to claim 1, wherein, A number of circular tube column stiffening plates are evenly arranged at the lower end of the circular tube column. The circular tube column stiffening plates are arranged perpendicular to the herringbone column top plate, welded to the herringbone column top plate on one side and welded to the surface of the circular tube column axially on the other side.

6. The substation steel framework support according to claim 1, characterized in that, A top plate stiffening plate connected to the circular tube column is arranged below the circular tube column top plate.

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