A space grid structure member connecting device

Abstract

A kind of space grid structure rod connecting device, can realize the axial telescopic deformation of rod, insulate temperature transfer, effectively reduce the temperature effect of space grid structure, simultaneously, the connection can be easily disassembled, repeatedly assembled.It is to cut off the rod from the middle part, respectively weld end plate at the cutting place, place rubber pad between two end plates, set a sealing plate outside one side end plate, place rubber pad between sealing plate and end plate, end plate, rubber pad and sealing plate are all circular and reserve the same specification, same number of standard round holes, hole wall is smooth and flat, then sequentially penetrate end plate, rubber pad and sealing plate by bolt, connect each component into a whole, finally fixed by nut tightening.After nut is unscrewed, take out bolt, replace rubber pad, can insert original bolt again, tighten original nut.

Description

Technical Field

[0001] This utility model relates to a spatial grid structure rod connection device, and more particularly to a spatial grid structure rod connection device that can realize axial expansion and contraction deformation of rods, isolate temperature transmission, and be easily disassembled. Background Technology

[0002] Spatial grid structures are widely used in large public buildings, such as stadiums, gymnasiums, exhibition halls, airports, and train stations. These buildings typically have large floor plans. After completion, they are subject to temperature effects such as solar temperature differences and seasonal temperature differences. Seasonal temperature differences are characterized by slow, uniform, and overall temperature variation. Solar temperature differences, on the other hand, are influenced by many factors, including building materials, solar radiation, ambient wind speed, building shape, and shading from the surrounding environment. They are characterized by short duration, rapid changes, and uneven distribution. If abnormal temperature differences occur in a part of the building, it can lead to excessive stress concentration in the local structure, affecting the overall structural safety.

[0003] Spatial grid structures typically use steel pipes as members. Due to the high thermal conductivity of steel, spatial grid structures are quite sensitive to temperature changes, especially outdoor, complex, and large-scale spatial grid structures. Because of the thermal expansion and contraction properties of steel, structural members elongate during heating and contract during cooling. Temperature is transferred along the members, and the deformation of different members gradually accumulates. When this deformation is constrained at the supports of the spatial grid structure, thermal stress is generated in the overall structure, resulting in horizontal thrust at the supports. This temperature effect becomes increasingly pronounced as the building's planar dimensions increase.

[0004] For complex spatial grid structures with large planar dimensions, it is extremely difficult to accurately simulate the temperature field of the overall structure under sunlight or seasonal changes and analyze its temperature effects during the engineering design phase. Only after the project is completed and real-time monitoring of the temperature field around the clock can the true distribution pattern of temperature effects be obtained. Therefore, during the engineering design phase, there is no reliable basis for judging whether the temperature effect values ​​are reasonable, which will inevitably lead to uncertainty in the design results and pose potential risks to the safety of the building structure.

[0005] Therefore, it is urgent and significant to reduce the temperature effects of spatial grid structures through technical means. Summary of the Invention

[0006] To fundamentally reduce the temperature effects of solar radiation or seasonal temperature changes on spatial grid structures, this invention provides a connecting device for spatial grid structure members. Rubber pads are added to the member connections, fully utilizing the excellent insulation, heat insulation, and easy expansion and contraction properties of rubber. This connecting device has the same load-bearing capacity as the original members, can release the axial deformation of the members under temperature influence, and isolate temperature transmission, thereby reducing the temperature effects on the spatial grid structure, mitigating the adverse effects of temperature under various conditions, greatly simplifying the analysis methods for the temperature effects of complex spatial grid structures, effectively reducing engineering construction costs, and improving the safety of building structures. Furthermore, once the rubber pads age or corrode, the connecting device is easy to disassemble and reassemble, facilitating the replacement of the rubber pads.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: a connecting device is constructed in the middle part of the rods between nodes of a spatial grid structure. This device is composed of steel plates, rubber pads, and bolts. It involves cutting a rod of the spatial grid structure into two rods at the middle, welding end plates to the cut points of the two rods using bevel welds, placing a rubber pad between the two end plates, and setting a sealing plate on the outside of one end plate. A rubber pad is also placed between the sealing plate and the end plate. Both the end plate and the sealing plate are made of steel plates. The sealing plate and the rods, as well as the rubber pads and the rods, are not fixed. The end plates, rubber pads, and sealing plates are all circular and have pre-drilled standard circular holes of the same specification and number. The hole walls are smooth and flat. Bolts are then inserted sequentially through the circular holes of the end plates, rubber pads, and sealing plates to connect the components into a whole. Finally, nuts are tightened to secure the connection. The principle behind this connecting device's ability to reduce the temperature effects of a spatial grid structure is as follows: When the temperature of a member increases, it undergoes elongation deformation. At this time, the rubber pad between the two end plates is compressed, thus offsetting the elongation deformation. Conversely, when the temperature of a member decreases, it undergoes contraction deformation. The rubber pad between the end plate and the sealing plate is compressed, thus offsetting the contraction deformation. Therefore, regardless of whether the member experiences temperature increases or decreases, the compression deformation of the rubber pad prevents the gradual accumulation of deformation. Simultaneously, the rubber pad isolates the temperature transfer between members, fundamentally reducing the temperature effects of the spatial grid structure. The specific disassembly procedure for this connecting device is as follows: temporarily fix the two members at the connection point, loosen the nut, remove the bolt, replace the rubber pad, reinsert the original bolt, and tighten the original nut.

[0008] The beneficial effects of this utility model are that it can effectively reduce the temperature effect of spatial grid structures and simplify the design and analysis process of spatial grid structures without changing the existing design methods and stress characteristics of spatial grid structures. It can be achieved using only easily processed steel plates, rubber pads, and bolts. Once the rubber pads age or corrode, they can be easily disassembled and replaced, thereby reducing engineering construction costs, improving the safety of building structures, and further promoting the development and application of spatial grid structures. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0010] Figure 1 This is a structural diagram of the rod connection of this utility model.

[0011] Figure 2 yes Figure 1 Section II.

[0012] In the diagram, 1. rod, 2. rod, 3. end plate, 4. end plate, 5. rubber pad, 6. rubber pad, 7. sealing plate, 8. bolt, 9. nut. Detailed Implementation

[0013] The construction and installation process of this utility model is as follows: In Figure 1 First, end plates (3) and (4) are welded to rods (1) and (2) respectively using bevel welds. A rubber pad (5) is placed between end plates (3) and (4). A rubber pad (6) is first put on rod (2), and then a sealing plate (7) is put on. Bolts (8) are inserted into the reserved round holes of end plates (3), rubber pads (5), end plates (4), rubber pads (6), and sealing plates (7) in sequence. Then, nuts (9) are screwed onto bolts (8) and tightened to fix them. When rod (1) or rod (2) elongates due to temperature rise, rubber pad (5) is compressed and deformed. When rod (1) or rod (2) shrinks due to temperature drop, rubber pad (6) is compressed and deformed. The temperature transfer between rod (1) and rod (2) is isolated by rubber pad (5). The procedure for replacing the rubber gasket is as follows: unscrew the nut (9) from the bolt (8), pull out the bolt (8), replace the rubber gasket (5) and the rubber gasket (6), then insert the bolt (8) into the reserved holes of the end plate (3), the rubber gasket (5), the end plate (4), the rubber gasket (6), and the sealing plate (7) in sequence, and then screw the nut (9) onto the bolt (8) and tighten it to fix it.

[0014] Figure 2 In the middle, the bolts (8) are evenly arranged around the end plate (3), and the bolts (8) pass through the reserved round holes of the end plate (3), rubber pad (5), end plate (4), rubber pad (6), and sealing plate (7) in sequence.

Claims

1. A spatial grid structure rod connection device, wherein bolts are used to connect the components into a whole, and the bolts pass through the end plate, rubber pad, and sealing plate, characterized in that: The bolts are inserted into the reserved round holes of the end plate, rubber pad, end plate, rubber pad, and sealing plate in sequence, and then tightened with nuts to secure them.

2. The rod connection device according to claim 1, characterized in that: The pre-drilled holes in the end plate, rubber pad, and sealing plate are standard round holes with smooth and flat walls.

3. The rod connection device according to claim 1, characterized in that: After the bolt is unscrewed, it can be screwed back in and reused.

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