Building steel structure with good anti-seismic effect

Abstract

The building steel structure with the good anti-seismic effect comprises a vertical steel frame, a notch is formed in the front face of the vertical steel frame, a transverse steel frame is slidably connected to the notch in an inserted mode, and damping supports used for dispersing seismic force at connecting joints between the vertical steel frame and the transverse steel frame are welded to the top wall and the bottom wall of the notch correspondingly; the clear distance between the two shock absorption supports is consistent with the height of the transverse steel frame, a blocking and protecting assembly used for limiting in front of the transverse steel frame when the transverse steel frame is inserted between the two shock absorption supports is installed on the front face of the vertical steel frame, and each shock absorption support comprises a Z-shaped steel plate with the width consistent with the depth of a notch; and a plurality of spring structures for enhancing deformation force are mounted on the Z-shaped steel plate. The Z-shaped steel plates with the spring structures are arranged on the upper portion and the lower portion of the connecting joint of the transverse steel frame and the vertical steel frame, the inherent frequency of the structure can be adjusted, the inherent frequency of the structure can be better matched with or avoid the frequency of seismic waves, and therefore the dynamic response of the structure is optimized.

Description

Technical Field

[0001] The invention relates to the technical field of steel structures, in particular to a building steel structure with good earthquake resistance effect. Background Art

[0002] Steel structures are widely used in high-rise buildings, large public facilities and industrial plants due to their high strength, light weight, fast construction speed and high recyclability. Steel structures usually include columns used to support the vertical load of the building and transfer the load to the foundation, horizontal braces used to connect and strengthen the structure laterally and provide additional stability and rigidity, and other related structures.

[0003] In the prior art, steel structures are usually assembled by bolting or welding during installation, which lacks certain deformation capacity. During an earthquake, the structure requires some elastic deformation to absorb and release energy, but rigid connections may lead to stress concentration and easily cause cracks or fractures. Summary of the invention

[0004] In view of the deficiencies of the prior art, an object of the present invention is to provide a building steel structure with good earthquake resistance to solve the problem of insufficient earthquake resistance at the connection nodes of some existing building steel structures mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a building steel structure with good earthquake resistance, comprising a vertical steel frame, a notch is provided on the front of the vertical steel frame, a transverse steel frame is slidably inserted in the notch, a shock-absorbing bracket for dispersing the seismic force at the connection node between the vertical steel frame and the transverse steel frame is welded on the top wall and the bottom wall of the notch, and the net spacing between the two shock-absorbing brackets is consistent with the height of the transverse steel frame, and a guard assembly is installed on the front of the vertical steel frame for limiting the position in front of the transverse steel frame when the transverse steel frame is inserted between the two shock-absorbing brackets;

[0006] The shock-absorbing bracket comprises a Z-shaped steel plate whose width is consistent with the depth of the notch, and a plurality of spring structures for enhancing the deformation force are installed on the Z-shaped steel plate.

[0007] Preferably, the Z-shaped steel plate is composed of an inclined plate and a flat plate installed on the top and bottom of the inclined plate;

[0008] Both sides of the inclined panel are provided with protruding strips, and the spring structure is connected between the protruding strips and the flat panel. Both sides of the inclined panel are provided with inner grooves for expanding the plane area of ​​the protruding strips.

[0009] Preferably, a limit frame located above the slot is welded to the front of the vertical steel frame, and a connecting steel bar is also welded to the front of the vertical steel frame, and the top surface of the connecting steel bar is at the same height as the bottom wall of the slot, and high-strength bolts for fixing the guard assembly are detachably connected to the bottom of the connecting steel bar.

[0010] Preferably, the guard assembly includes an L-shaped baffle plate slidably inserted in the gap between the vertical steel frame and the limiting frame, and an extension plate connected to the high-strength bolts is integrally installed at the bottom of the L-shaped baffle plate.

[0011] Preferably, the front and back sides of the transverse steel frame are provided with engaging grooves, and the front and rear engaging grooves are arranged in a staggered manner;

[0012] The clear distance between two adjacent engaging grooves is at least equal to the width of the groove.

[0013] Preferably, both sides of the L-shaped baffle are integrally connected with side plates with the same height as the horizontal steel frame, upper pressure plates are installed on the top of the two side plates, and two vertical steel bars for inserting into the fitting grooves are installed on the bottom of the upper pressure plate, and the two vertical steel bars are staggered front to back.

[0014] Preferably, a guide bar is installed on the front of the lower Z-shaped steel plate to guide the transverse steel frame to be accurately inserted between the upper and lower shock-absorbing brackets;

[0015] The guide strip is inclined at an angle of no more than 30° from the back to the front.

[0016] Preferably, a reinforcement structure with a height greater than the height of the slot is installed on the back of the vertical steel frame, and the reinforcement structure is coaxial with the midpoint of the slot.

[0017] By means of the above technical solution, the present invention provides a building steel structure with good earthquake resistance, which has at least the following beneficial effects:

[0018] 1. The present invention adds Z-shaped steel plates above and below the connection nodes of the horizontal steel frame and the vertical steel frame, which can absorb part of the seismic energy through deformation, reduce the energy transmitted to other parts of the structure, and thus reduce structural damage. In addition, combined with the application of the spring structure in the Z-shaped steel plate, the natural frequency of the structure can be adjusted to better match or avoid the frequency of the seismic wave, thereby optimizing the dynamic response of the structure.

[0019] 2. In the present invention, the horizontal steel frame and the vertical steel frame are in a combined state of interlocking and plugging, and are fixed in position by means of a guard assembly, which improves the stability and rigidity of the assembly structure between the two while effectively reducing the difficulty and time consumption of assembling the two.

[0020] 3. The present invention embeds the transverse steel frame into the groove in the vertical steel frame, and then slides the L-shaped baffle downward to block the front of the transverse steel frame, which can effectively prevent the transverse steel frame from sliding forward. In addition, the extension plate and the connecting steel bar are locked with high-strength bolts to increase the stability of the L-shaped baffle when it is fixed. Moreover, since the L-shaped baffle and the extension plate hang downward under the support of their own gravity, even if the high-strength bolts fall, the limiting and protective effects on the front of the transverse steel frame can be guaranteed.

[0021] 4. When the L-shaped baffle slides downward to block the front side of the notch, the vertical steel bar can be driven to move downward accordingly and synchronously engaged in the engaging groove at the corresponding position on the horizontal steel frame, thereby effectively preventing the horizontal steel frame from moving horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the split structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the installation structure of the vertical steel frame and the reinforcement structure of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the vertical steel frame and the notch of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the guard assembly of the present invention;

[0028] Figure 6 It is a schematic structural diagram of the shock-absorbing bracket of the present invention.

[0029] In the figure:

[0030] 1. Vertical steel frame; 101. Notch; 102. Limiting frame; 103. Connecting steel bar; 1031. High-strength bolts; 104. Reinforcement structure;

[0031] 2. Transverse steel frame; 201. Fitting groove;

[0032] 3. Shock-absorbing bracket; 301. Z-shaped steel plate; 3011. Protruding strip; 3012. Inner groove; 302. Spring structure;

[0033] 4. Guard assembly; 401. L-shaped baffle; 402. Extension plate; 403. Side plate; 404. Upper pressure plate; 405. Vertical steel bar;

[0034] 5. Guide strip. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] Embodiment 1

[0037] The connection nodes between the vertical columns and the horizontal structures in the building steel structure are usually welded. Once the welded connection fails, it may cause the instability of the entire structure, because the welded nodes usually do not have enough redundancy to withstand additional deformation or load; in addition, in an earthquake, the structure needs some elastic deformation to absorb and release energy, but rigid connections may cause stress concentration and easily cause cracks or fractures. In order to effectively solve this problem, such as Figure 1-Figure 6As shown, this embodiment proposes a building steel structure with good earthquake resistance, which has a vertical steel frame 1, a notch 101 is provided on the front of the vertical steel frame 1, a transverse steel frame 2 is slidably inserted into the notch 101, and the thickness of the transverse steel frame 2 is consistent with the depth of the notch 101, so after the transverse steel frame 2 is inserted into the notch 101, the front of the transverse steel frame 2 is in the same vertical plane as the front of the vertical steel frame 1. The shock-absorbing bracket 3 welded on the top and bottom walls of the notch 101 is used to disperse the seismic force at the connection node between the vertical steel frame 1 and the transverse steel frame 2, and the net spacing between the two shock-absorbing brackets 3 is consistent with the height of the transverse steel frame 2, so that the transverse steel frame 2 can be combined with the vertical steel frame 1 more closely. The front of the vertical steel frame 1 is equipped with a guard assembly 4 for limiting the position in front of the horizontal steel frame 2 when the horizontal steel frame 2 is inserted between the two shock-absorbing brackets 3. The shock-absorbing bracket 3 includes a Z-shaped steel plate 301 with a width consistent with the depth of the slot 101, and a plurality of spring structures 302 for enhancing the deformation force are installed on the Z-shaped steel plate 301. In practical applications, the slot 101 is exposed by pushing the guard assembly 4 upward, and then the horizontal steel frame 2 is embedded between the two shock-absorbing brackets 3 in the slot 101, and then the guard assembly 4 is pushed downward and fixedly connected to the vertical steel frame 1 to protect the front side of the slot 101, thereby effectively preventing the horizontal steel frame 2 from sliding forward after being matched with the vertical steel frame 1. Among them, the Z-shaped steel plate 301 is added at the upper and lower parts of the connection node between the horizontal steel frame 2 and the vertical steel frame 1, which has a certain energy absorption capacity. Under the action of an earthquake, the Z-shaped steel plate 301 can absorb part of the earthquake energy through deformation, reduce the energy transmitted to other parts of the structure, and thus reduce the damage to the structure. In addition, since the Z-shaped steel plate 301 is composed of an inclined plate and a flat plate installed at the top and bottom of the inclined plate, by adding a plurality of spring structures 302 in the gap between the inclined plate and the flat plate, the connection between the two is not so rigid, thereby allowing the structure to have a certain deformation capacity under the action of load, which helps to reduce the stress concentration caused by the load, and at the same time allows the structure to have a larger deformation range under the load, thereby improving the toughness of the structure. The coordinated application of the spring structure 302 and the Z-shaped steel plate 301 can adjust the natural frequency of the structure to better match or avoid the frequency of the seismic wave, thereby optimizing the dynamic response of the structure. This can reduce the resonance phenomenon of the building in the earthquake and reduce the damage caused by the vibration.

[0038] Specifically, protruding strips 3011 are installed on both sides of the inclined panel, and the spring structure 302 is connected between the protruding strips 3011 and the flat panel, and inner grooves 3012 are opened on both sides of the inclined panel for expanding the plane area of ​​the protruding strips 3011. By using the protruding strips 3011 and the inner grooves 3012, the plane area of ​​the spring structure 302 installed on the inclined panel is expanded, thereby increasing the stability of the spring structure 302 during welding and application.

[0039] Among them, the horizontal steel frame 2 and the vertical steel frame 1 are in a combined state of interlocking and plugging, and are limited and fixed by the guard assembly 4, so as to improve the stability and rigidity of the assembly structure between the two while effectively reducing the difficulty and time consumption of assembly between the two. In addition, according to actual needs on site, the horizontal steel frame 2 can be flexibly adjusted left and right between the two shock-absorbing brackets 3 in the groove 101.

[0040] Embodiment 2

[0041] In conventional applications, the guard assembly 4 is bolted to the front of the notch 101 of the vertical steel frame 1, thereby providing a limit and protection function for the front side of the transverse steel frame 2 that is inserted and plugged into the notch 101. However, if the bolts are not firmly installed, in actual applications, if the bolts fall off, the guard assembly 4 will fall straight down, thereby affecting the limit and protection effect on the transverse steel frame 2. Figure 1-Figure 5 As shown, in order to effectively solve this problem, a limit frame 102 located above the slot 101 is welded on the front side of the vertical steel frame 1, and a connecting steel bar 103 is also welded on the front side of the vertical steel frame 1, and the top surface of the connecting steel bar 103 is at the same height as the bottom wall of the slot 101, and a high-strength bolt 1031 for fixing the guard assembly 4 is detachably connected to the bottom of the connecting steel bar 103, and the guard assembly 4 includes an L-shaped baffle plate 401 which is slidably inserted in the gap between the vertical steel frame 1 and the limit frame 102, and an extension plate 402 connected to the high-strength bolt 1031 is integrally installed at the bottom of the L-shaped baffle plate 401. By pushing the L-shaped baffle plate 401 upward along the limiting frame 102, the bottom of the extension plate 402 is slightly higher than the bottom of the upper shock-absorbing bracket 3, and then the transverse steel frame 2 is inserted between the upper and lower shock-absorbing brackets 3 in the slot 101, and the L-shaped baffle plate 401 is slid downward to block the front of the transverse steel frame 2 to prevent the transverse steel frame 2 from sliding forward, and the extension plate 402 and the connecting steel bar 103 are locked with high-strength bolts 1031 to increase the stability of the protection of the L-shaped baffle plate 401. When the high-strength bolt 1031 falls, the L-shaped baffle plate 401 and the extension plate 402 are still blocked on the front of the transverse steel frame 2 under the support of their own gravity, thereby effectively improving safety.

[0042] Embodiment 3

[0043] In the second embodiment, the transverse steel frame 2 inserted between the two shock-absorbing brackets 3 in the notch 101 may slide horizontally to the left and right, thereby affecting the stability and safety of its assembly with the vertical steel frame 1. Figure 2 , Figure 3 and Figure 5As shown, in order to effectively solve this problem, engaging grooves 201 are opened on the front and back sides of the transverse steel frame 2, and the front and rear engaging grooves 201 are staggered, and the net spacing between two adjacent engaging grooves 201 is at least equal to the width of the notch 101, and both sides of the L-shaped baffle 401 are integrally connected with side plates 403 with the same height as the transverse steel frame 2, and upper pressure plates 404 are installed on the top of the two side plates 403, and two vertical steel bars 405 for being inserted into the engaging grooves 201 are installed on the bottom of the upper pressure plate 404, and the two vertical steel bars 405 are staggered front to back. By inserting the transverse steel frame 2 into the slot 101 and adjusting the engaging groove 201 on the transverse steel frame 2 to the corresponding position, when the L-shaped baffle plate 401 is pushed downward to cover the front of the transverse steel frame 2, the vertical steel bar 405 can be driven to move downward accordingly and synchronously engage with the engaging groove 201 at the corresponding position on the transverse steel frame 2, thereby effectively preventing the transverse steel frame 2 from moving horizontally.

[0044] Embodiment 4

[0045] like Figure 2 As shown, a guide bar 5 for guiding the transverse steel frame 2 to be accurately inserted between the upper and lower shock-absorbing brackets 3 is installed on the front of a Z-shaped steel plate 301 at the bottom, and the guide bar 5 is inclined at an angle of no more than 30° from the back to the front. When the transverse steel bar 2 is inserted between the upper and lower shock-absorbing brackets 3, the bottom of the transverse steel frame 2 is first placed on the top surface of the guide bar 5, and then the top surface of the guide bar 5 is pushed from front to back to guide the transverse steel frame 2 to be accurately inserted between the upper and lower shock-absorbing brackets 3, so that friction is reduced during the insertion process, thereby improving the convenience and accuracy of assembly.

[0046] Embodiment 5

[0047] like Figure 3 and Figure 4 As shown, a reinforcing structure 104 having a height greater than that of the slot 101 is installed on the back of the vertical steel frame 1, and the reinforcing structure 104 is coaxial with the midpoint of the slot 101. The reinforcing structure 104 is used to supplement the missing part of the vertical steel frame 1 due to the setting of the slot 101, and to strengthen the strength of the local area of ​​the vertical steel frame 1 located at the slot 101, so that the slot 101 area can better disperse stress when bearing load, reduce deformation and potential structural failure.

[0048] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A building steel structure with good earthquake resistance, comprising a vertical steel frame (1), Features: The front of the vertical steel frame (1) is provided with a notch (101), a transverse steel frame (2) is slidably inserted into the notch (101), a shock-absorbing bracket (3) for dispersing the seismic force at the connection node between the vertical steel frame (1) and the transverse steel frame (2) is welded on the top wall and the bottom wall of the notch (101), and the net spacing between the two shock-absorbing brackets (3) is consistent with the height of the transverse steel frame (2), and a guard assembly (4) for limiting the position in front of the transverse steel frame (2) when the transverse steel frame (2) is inserted between the two shock-absorbing brackets (3) is installed on the front of the vertical steel frame (1); The shock-absorbing bracket (3) comprises a Z-shaped steel plate (301) whose width is consistent with the depth of the notch (101), and a plurality of spring structures (302) for enhancing deformation force are installed on the Z-shaped steel plate (301).

2. A building steel structure with good earthquake resistance according to claim 1, Features: The Z-shaped steel plate (301) is composed of an inclined plate and flat plates installed on the top and bottom of the inclined plate; Both sides of the inclined panel are provided with protruding strips (3011), and the spring structure (302) is connected between the protruding strip (3011) and the flat panel. Both sides of the inclined panel are provided with inner grooves (3012) for expanding the plane area of ​​the protruding strip (3011).

3. A building steel structure with good earthquake resistance according to claim 1, Features: A limiting frame (102) located above the notch (101) is welded to the front of the vertical steel frame (1), and a connecting steel bar (103) is also welded to the front of the vertical steel frame (1), and the top surface of the connecting steel bar (103) is at the same height as the bottom wall of the notch (101), and a high-strength bolt (1031) for fixing the guard assembly (4) is detachably connected to the bottom of the connecting steel bar (103).

4. A building steel structure with good earthquake resistance according to claim 3, Features: The guard assembly (4) comprises an L-shaped guard plate (401) slidably inserted in the gap between the vertical steel frame (1) and the limiting frame (102), and an extension plate (402) connected to the high-strength bolts (1031) is integrally installed at the bottom of the L-shaped guard plate (401).

5. A building steel structure with good earthquake resistance according to claim 4, Features: The front and back sides of the transverse steel frame (2) are both provided with engaging grooves (201), and the front and rear engaging grooves (201) are arranged in a staggered manner; The net distance between two adjacent engaging grooves (201) is at least equal to the width of the notch (101).

6. A building steel structure with good earthquake resistance according to claim 5, Features: Both sides of the L-shaped baffle (401) are integrally connected with side plates (403) having the same height as the horizontal steel frame (2), and upper pressure plates (404) are installed on the top of the two side plates (403). The bottom of the upper pressure plate (404) is installed with two vertical steel bars (405) for being inserted into the engaging groove (201), and the two vertical steel bars (405) are arranged in a front-to-back staggered manner.

7. A building steel structure with good earthquake resistance according to claim 1, Features: A guide bar (5) is installed on the front side of the lower Z-shaped steel plate (301) for guiding the transverse steel frame (2) to be accurately inserted between the upper and lower shock-absorbing brackets (3); The guide strip (5) is inclined at an angle of no more than 30° from the back to the front.

8. A building steel structure with good earthquake resistance according to claim 1, Features: A reinforcing structure (104) having a height greater than that of the slot (101) is installed on the back of the vertical steel frame (1), and the reinforcing structure (104) is coaxial with the midpoint of the slot (101).

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