CN213626808U - Telescopic bearing steel beam lateral supporting structure - Google Patents
Telescopic bearing steel beam lateral supporting structure Download PDFInfo
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- CN213626808U CN213626808U CN202021759739.8U CN202021759739U CN213626808U CN 213626808 U CN213626808 U CN 213626808U CN 202021759739 U CN202021759739 U CN 202021759739U CN 213626808 U CN213626808 U CN 213626808U
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- steel beam
- bearing steel
- connecting rod
- lateral
- rigid support
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Abstract
The utility model relates to a steel construction to a retractable bearing girder steel side direction bearing structure is disclosed, and it includes the bearing girder steel, the bearing girder steel is connected with rigid support piece through the side direction link assembly that is connected with the speed lock attenuator, thereby allows the tie point of side direction link assembly and bearing girder steel with relative skew takes place between the tie point between side direction link assembly and the rigid support piece, side direction link assembly includes first round pin axle node, first connecting rod, speed lock attenuator, second connecting rod and the second round pin axle node that the order is connected. The utility model discloses a speed lock type attenuator forms the side direction bearing structure of a telescopic girder steel, is particularly suitable for the situation of the component of thermal energy can take place for operating condition for rigid support piece, and side direction link assembly is connected the half of the corresponding maximum expansion of one end should be biased with the bearing girder steel when the installation under this situation.
Description
Technical Field
The utility model relates to a steel construction, especially a side direction bearing structure of telescopic bearing girder steel.
Background
The large-span load-bearing steel beam is easy to generate lateral bending and torsion instability along the weak axis direction when bearing large transverse load and axial load, as shown in fig. 1 and 2. According to GB50017-2017, bending moment and axial force borne by a bending member and lateral unsupported length of the member
In inverse proportion, the greater the unsupported length, the more difficult it is to ensure the overall stability of the structural member, so a piece of support truss is usually arranged laterally of the beam, as shown in fig. 3, to reduce the lateral free length of the beam and improve the stable bearing capacity.
In the prior art, a lateral support structure is a rigid structure, and a rigid member is adopted as a lateral support member and is rigidly connected with a supported bearing steel beam.
In certain field environments, the lateral direction of the load-bearing steel beams leaves insufficient space for the placement of the support trusses for economic or space-saving reasons. For example, after a boiler column net of a certain power plant is compressed, the vicinity of a bearing steel beam is occupied by boiler equipment and pipelines, in order to ensure that the strength design meets the national standard requirements, the lateral support is directly rooted on the boiler equipment, and the lateral support is provided for the bearing steel beam by utilizing the rigidity of the boiler equipment. However, if the traditional rigid support is adopted, a great additional internal force is generated due to the expansion of the boiler equipment, and even the equipment or the steel structure is damaged in severe cases, so that a two-in-one approach needs to be found.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved in order to overcome the problem that the lateral support that current rigid connection mode formed the bearing girder steel is unsuitable for providing the rigid support piece that the lateral support is the component that can take place thermal expansion, the utility model aims to provide a retractable bearing girder steel lateral support structure, its allow the tie point of lateral connecting rod subassembly and bearing girder steel with relative skew takes place between the tie point between lateral connecting rod subassembly and the rigid support piece, the overall stability design difficulty of bearing girder steel is solved under the limited condition in place or space.
The utility model provides a technical scheme that its technical problem adopted is: retractable bearing steel beam lateral bracing structure, including the bearing steel beam, the bearing steel beam is connected with rigid support through the side direction link assembly that is connected with the speed lock attenuator to allow the relative skew takes place between the tie point of side direction link assembly and bearing steel beam and the tie point of side direction link assembly and rigid support.
When the rigid supporting piece is a component which can thermally expand in a working state, the expansion can be absorbed by applying the scheme, the internal stress is reduced, and the stability of the structure is kept.
In particular applications of the invention, the rigid support may be a rigid support that is part of a boiler plant.
For convenient equipment and location, lateral connecting rod subassembly includes first round pin axle node, first connecting rod, speed lock attenuator, second connecting rod and the second round pin axle node of connecting in proper order.
Setting the maximum horizontal expansion of the rigid support member in the hot state toΔLWhen the connecting rod assembly is installed, the connecting end of the lateral connecting rod assembly and the bearing steel beam is offset by 0.5ΔL(ii) a The maximum vertical expansion of the rigid support member in the hot state is set asΔhWhen the connecting rod assembly is installed, the connecting end of the lateral connecting rod assembly and the bearing steel beam is offset by 0.5Δh。
According to the size of the allowable unsupported length under a specific stress condition, the bearing steel beam and the rigid support can be connected with each other through more than two lateral connecting rod assemblies.
According to the specific stress of the bearing steel beam, when the axis of the bearing steel beam is horizontally arranged, the lateral connecting rod assemblies are approximately arranged on the same horizontal plane.
According to the specific stress of the bearing steel beam, when the axis of the bearing steel beam is vertically arranged, the lateral connecting rod assemblies are approximately arranged on the same vertical plane.
The utility model has the advantages that: adopt speed lock type attenuator to replace traditional rigid support, form the side direction bearing structure of a telescopic girder steel, both solved the side direction support problem of bearing girder steel, can absorb the inflation of the rigid support spare that provides the side direction support again, avoid the inflation to be hindered and cause the influence to equipment or steel construction.
Drawings
Figure 1 is a schematic view of a load-bearing steel beam bearing a lateral load.
Figure 2 is a schematic view of a load-bearing steel beam bearing an axial load.
Figure 3 is a schematic view of a load-bearing steel beam with a lateral support truss.
Fig. 4 is a schematic view of a lateral support assembly used in an embodiment of the present invention.
Figure 5 is a horizontal mounting diagram of a lateral support structure of a load bearing steel beam in an embodiment of the invention.
Figure 6 is the embodiment of the utility model discloses a vertical installation sketch of lateral support structure of bearing steel roof beam.
Labeled as: 1-a load-bearing steel beam, 2-a lateral support truss, 3-a lateral support assembly, 4-a rigid support, 301-a first pin joint, 302-a first link, 303-a velocity lock damper, 304-a second link, 305-a second pin joint.
N in fig. 2 and 6 indicates the acting force, and the arrows in fig. 1, 2, and 6 indicate the direction of the acting force or the direction in which the rigid support member is displaced due to thermal expansion.
H in fig. 6 represents the maximum central elevation of the rigid support member therein in the hot state.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 4, 5 and 6, the utility model discloses a retractable bearing steel beam side direction bearing structure includes bearing steel beam 1, and bearing steel beam 1 is connected with rigid support piece 4 through the side direction link assembly 3 that is connected with speed lock attenuator 303 to the permission side direction link assembly 3 with bearing steel beam 1's the tie point with relative skew takes place between side direction link assembly 3 and rigid support piece 4's the tie point.
Example (b):
as shown in fig. 4, 5 and 6, in a certain power plant, in order to solve the difficulty of the overall stable design of the load-bearing steel beam in the case of a limited site or space, boiler equipment or a steel structure is used as a rigid support part 4 to provide lateral support for the bearing steel beam 1, and because the boiler equipment or the steel structure can generate thermal expansion in the working state, if the connecting rod is directly and rigidly connected with the bearing steel beam 1, the thermal expansion can be prevented to damage boiler equipment or a steel structure, so that the two connecting rods are mutually connected through at least one telescopic lateral connecting rod assembly 3, the lateral connecting rod assembly 3 comprises a first pin joint 301, a first connecting rod 302, a speed lock damper 303, a second connecting rod 304 and a second pin joint 305 which are sequentially connected, the connecting point of the lateral connecting rod assembly 3 and the rigid supporting part 4 is the first pin joint 301, and the connecting point of the lateral connecting rod assembly 3 and the bearing steel beam 1 is the second pin joint 305. Due to the nature of speed lock damper 303, this support structure allows for the relative offset between the two aforementioned attachment points, i.e., first pin node 301 and second pin node 305.
The speed lock damper 303 has sensitivity to speed, when the stretching or compressing speed of the first connecting rod 302 and the second connecting rod 304 is low, the damper does not inhibit the movement trend of the connecting rods, and does not generate additional acting force, so that when the boiler is started to gradually rise in temperature and expand and the boiler is stopped to slowly reduce the temperature, the damper can compensate expansion displacement, does not generate additional expansion force, and does not influence the operation of equipment; when the stretching or compressing speed of the first and second connecting rods 302 and 304 is higher than a certain critical value, the damper is locked to form a rigid member like the connecting rod, and cannot be extended or shortened, and at the moment, the rigid member like the connecting rod is formed, so that when the bearing steel beam 1 is laterally unstable or is subjected to horizontal force of equipment due to an earthquake, effective lateral support can be provided by the characteristics of the rigid member, and the instability of the bearing steel beam 1 is restrained.
As shown in FIG. 5, the maximum horizontal expansion of the rigid support member 4 in the hot state is set toΔL , When the connecting rod assembly is installed, the connecting end of the lateral connecting rod assembly 3 and the bearing steel beam 1 is offset by 0.5ΔL。
As shown in FIG. 6, the maximum vertical expansion of the rigid support member 4 in the hot state is set toΔhWhen the connecting rod component 3 is installed, the connecting end of the lateral connecting rod component 3 and the bearing steel beam 1 is offset by 0.5Δh。
Calculating the type of the required speed lock type damper 303, the section material selection of the rigid connecting rod and the structural size of the pin shaft support according to the lateral force required by the integral stability of the bearing steel beam 1, respectively and hingely connecting two ends of the speed lock type damper 303 with the rigid connecting rod and the pin shaft support, respectively and welding the pin shaft support with the boiler rigid beam or the bearing steel beam 1 serving as the rigid supporting part 4, and measuring the maximum horizontal expansion amount by the offset amount of the two supports during installationΔLAnd maximum vertical expansionΔhThe half of the total weight of the steel beam 1 can form a lateral supporting structure of the bearing steel beam.
The arrangement pitch of the lateral connecting-rod assemblies 3 is determined according to specific force calculation, and can be arranged in a row or a column.
Claims (10)
1. Retractable bearing steel beam lateral support structure, including bearing steel beam (1), characterized by: the bearing steel beam (1) is connected with the rigid support (4) through a lateral connecting rod assembly (3) connected with a speed lock damper (303), so that relative offset is allowed to occur between a connecting point of the lateral connecting rod assembly (3) and the bearing steel beam (1) and a connecting point of the lateral connecting rod assembly (3) and the rigid support (4).
2. The telescoping load-bearing steel beam lateral support structure of claim 1, wherein: the rigid support (4) is a component which can generate thermal expansion in the working state.
3. The telescoping load-bearing steel beam lateral support structure of claim 2, wherein: the rigid support (4) is a rigid support as an integral part of the boiler plant.
4. The telescoping load-bearing steel beam lateral support structure of claim 1, 2 or 3, wherein: the lateral connecting rod assembly (3) comprises a first pin joint (301), a first connecting rod (302), a speed lock damper (303), a second connecting rod (304) and a second pin joint (305) which are connected in sequence.
5. The telescoping load-bearing steel beam lateral support structure of claim 2 or 3, wherein: the maximum horizontal expansion of the rigid support (4) in the hot state is set asΔLWhen the connecting rod component is installed, the connecting end of the lateral connecting rod component (3) and the bearing steel beam (1) is offset by 0.5ΔL(ii) a The maximum vertical expansion of the rigid support (4) in the hot state is set asΔhWhen the connecting rod component is installed, the connecting end of the lateral connecting rod component (3) and the bearing steel beam (1) is offset by 0.5Δh。
6. The telescoping load-bearing steel beam lateral support structure of claim 2 or 3, wherein: the bearing steel beam (1) and the rigid support (4) are connected with each other through more than two lateral connecting rod assemblies (3).
7. The telescoping load-bearing steel beam lateral support structure of claim 6, wherein: the axis of the bearing steel beam (1) is horizontally arranged.
8. The telescoping load-bearing steel beam lateral support structure of claim 7, wherein: the lateral connecting rod assemblies (3) are arranged on the same horizontal plane.
9. The telescoping load-bearing steel beam lateral support structure of claim 6, wherein: the axis of the bearing steel beam (1) is vertically arranged.
10. The telescoping load-bearing steel beam lateral support structure of claim 9, wherein: the lateral connecting rod assemblies (3) are arranged on the same vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021759739.8U CN213626808U (en) | 2020-08-21 | 2020-08-21 | Telescopic bearing steel beam lateral supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021759739.8U CN213626808U (en) | 2020-08-21 | 2020-08-21 | Telescopic bearing steel beam lateral supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213626808U true CN213626808U (en) | 2021-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021759739.8U Active CN213626808U (en) | 2020-08-21 | 2020-08-21 | Telescopic bearing steel beam lateral supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213626808U (en) |
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2020
- 2020-08-21 CN CN202021759739.8U patent/CN213626808U/en active Active
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