Support node structure for bidirectional stress release of simply supported beam
By designing vertical and transverse oblong holes and angle steel support structures in the simply supported beam connection nodes, vertical and horizontal displacement is allowed, the problem of insufficient resistance to stress of existing nodes is solved, and the load-bearing capacity and installation convenience are improved. Connect to multiple displacement-affected platforms.
Patent Information
- Application Number
- CN202420282405.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-02-05
AI Technical Summary
The existing simply supported beam connecting nodes are affected by thermal expansion and contraction, wind loads and seismic loads, resulting in horizontal and vertical displacement of the node plates, causing the bolts to bear large shear forces and reduce the bearing capacity of the nodes.
Design a supporting node structure for bidirectional stress relief of simply supported beams. By setting the first node plate, the second node plate and the cross beam between the embedded plates of the pressure vessel cylinder wall, and using vertical oblong holes and transverse oblong holes Connect with bolts, add angle steel support, use double nuts to prevent loosening, optimize the shape of the bolt holes to allow vertical and horizontal displacement.
It effectively reduces the stress at the node, improves the bearing capacity of the node, simplifies the installation process, and is suitable for multiple platform simple-supported beam connections affected by displacement.
Smart Images
Figure CN222140295U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a support node structure for bidirectionally releasing stress of a simply supported beam, belonging to the technical field of steel structure buildings. Background Art
[0002] Pressure vessels are widely used in industrial projects. There are often maintenance platforms or connecting beams between the walls of pressure vessels. The connection methods of these components are as follows: Figure 1 Simply supported beam node connection method. Under the temperature stress of the pressure vessel, the connection nodes between the platform and the staircase will have vertical displacement; while wind load and seismic load will cause horizontal displacement. This will cause the stairs and platforms to be affected by irregular stress. The stiffness of the node itself is used to resist the stress, which seriously weakens the bearing capacity of the connection node. Measures must be taken to release the displacement.
[0003] Common simply supported beam connection nodes are as follows: Figure 1 As shown, the node includes a steel plate 3 and bolts 4. During installation, the steel plate 3 is welded to the embedded plate 1 of the pressure vessel wall, and the simply supported beam 2 and the steel plate 3 are connected by bolts 4, thereby completing the simply supported beam connection between the two pressure vessels. This connection method has the following problems: the pressure vessel will produce horizontal displacement due to thermal expansion and contraction, and wind loads and seismic loads will cause horizontal displacement. The node plates on both sides will also move in the horizontal and vertical directions, which will cause the bolts to be subjected to large shear forces and reduce the bearing capacity of the node.
[0004] Therefore, there is an urgent need in the art for a support node structure for bidirectional stress release of a simply supported beam. Summary of the invention
[0005] The utility model aims to solve the problem that the resistance of the simply supported beam connection nodes to stress in the prior art is insufficient.
[0006] In order to achieve the purpose of solving the above-mentioned problems, the technical solution adopted by the utility model is to provide a support node structure for bidirectional stress release of a simply supported beam, including a first node plate, a second node plate and a cross beam arranged between the embedded plates of the two pressure vessel walls, the two node plates and the cross beam are connected by bolts, and the bolt holes are vertical oblong holes and horizontal oblong holes.
[0007] Preferably, a pair of angle steels for support are welded between the embedded plate and the two node plates, one end of the angle steel is welded to the side surfaces of the two node plates, and the other end is welded to the lower surface of the beam.
[0008] Preferably, the bolt is an M20 common bolt, and the width of the vertical oblong hole and the horizontal oblong hole is 2 mm larger than the bolt diameter.
[0009] Preferably, the total length of the vertical oblong holes and the horizontal oblong holes is not more than twice the width.
[0010] Preferably, the distance between the edges of the vertical oblong holes and the horizontal oblong holes is not less than 40 mm.
[0011] Preferably, the bolts are secured with double nuts to prevent loosening.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1 Safety: Due to the increase in vertical and horizontal movable displacements of the node, the stress on the node object can be reduced by moving when it is under stress.
[0014] 2 Convenience: During processing, the round bolt hole can be changed into an oblong hole, which requires very little additional labor. The use of oblong holes reduces the difficulty of installation caused by installation errors, and placing two angle steel supports makes beam construction very convenient.
[0015] 3 Applicability: Applicable to all platform simply supported beam connections affected by displacement. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the existing simply supported beam support node;
[0017] Figure 2 Schematic diagram of the simply supported beam support node provided by the utility model
[0018] Figure numerals: 1. embedded plate; 2. cross beam; 3. first node plate; 4. second node plate; 5. vertical oblong hole; 6. horizontal oblong hole; 7. angle steel. DETAILED DESCRIPTION
[0019] In order to make the present invention more clearly understood, a preferred embodiment is described in detail with reference to the accompanying drawings as follows:
[0020] like Figure 2 As shown, the utility model provides a bidirectional release bearing node structure of a simply supported beam, which comprises a bearing angle steel 7, a bolt 4, a vertical oblong hole 5, and a transverse oblong hole 6. The angle steel 7 is welded to the embedded plate 1 and the node plate 3, and during installation, the first node plate 3 and the second node plate 4 are connected to the crossbeam 2 through the vertical oblong hole 5 and the transverse oblong hole 6 using the bolt 4.
[0021] The utility model optimizes the bolt holes at both ends of the beam into oblong holes, and reserves the vertical displacement and left-right displacement that may occur at the node. When the stress is released, the vertical and left-right displacement can be released at the node, which reduces the stress at the node and reduces the difficulty of installation. The utility model is a connection node form with good economy and safety.
[0022] The above is only a preferred embodiment of the utility model, and is not any formal or substantial limitation of the utility model. It should be pointed out that ordinary technicians in this technical field can make some improvements and supplements without departing from the utility model, and these improvements and supplements should also be regarded as the protection scope of the utility model. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the utility model, which are all equivalent embodiments of the utility model; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the utility model are still within the scope of the technical solution of the utility model.
Claims
1. A support node structure for bidirectional stress release of a simply supported beam. It is characterized in that It comprises a first node plate, a second node plate and a cross beam which are arranged between the embedded plates of two pressure vessel cylinder walls. The two node plates and the cross beam are connected by bolts, and the bolt holes are vertical oblong holes and horizontal oblong holes.
2. The support node structure for bidirectional stress release of a simply supported beam as claimed in claim 1, It is characterized in that A pair of angle steels for support are welded between the embedded plate and the two node plates, one end of the angle steel is welded to the side surfaces of the two node plates, and the other end is welded to the lower surface of the beam.
3. The support node structure for bidirectional stress release of a simply supported beam as claimed in claim 1, It is characterized in that The bolt is an M20 common bolt, and the width of the vertical oblong hole and the horizontal oblong hole is 2mm larger than the bolt diameter.
4. The support node structure for bidirectional stress release of a simply supported beam as claimed in claim 1, It is characterized in that The total length of the vertical oblong hole and the horizontal oblong hole is not more than twice the width.
5. The support node structure for bidirectional stress release of a simply supported beam as claimed in claim 1, It is characterized in that The distance between the vertical oblong holes and the horizontal oblong holes is not less than 40 mm.
6. The support node structure for bidirectional stress release of a simply supported beam as claimed in claim 1, It is characterized in that The bolts are prevented from loosening by using double nuts.