A prefabricated building steel structure connection node

Abstract

The present invention relates to the technical field of building steel structure, and in particular to a prefabricated building steel structure connection node, comprising a steel column, wherein the steel column is provided with a support arm, wherein two steel beams are placed on the support arm, and a damping component and a rotating mechanism are provided between the two steel beams, wherein the damping component is a circular liquid capsule, wherein two first fan-shaped openings are symmetrically provided in the circumference of the circular liquid capsule, and the two first fan-shaped openings separate the interior of the damping component into a first chamber and a second chamber, wherein a damping hole is provided between the first chamber and the second chamber, and wherein a damping fluid is provided inside the damping component, and the damping fluid flows between the first chamber and the second chamber through the damping hole; in an initial state, the first chamber and the second chamber are both inclined; and the rotating mechanism can push the damping component to rotate a certain angle according to the temperature of the damping fluid in the damping component, so that the damping of the damping component remains unchanged as the temperature of the damping fluid changes.

Description

Technical Field

[0001] The invention relates to the technical field of building steel structures, and in particular to a prefabricated building steel structure connection node. Background Art

[0002] Building steel structure is a building that uses building steel to form a load-bearing structure. Steel structure buildings are often assembled through beam-column node connections. For example, two adjacent I-beams are connected by bolts to form a beam and then fixed to the column. In order to improve the seismic performance, a damper is usually installed between two I-beams. However, since the temperature of the damping fluid in the damper is easily affected by the external temperature, and the temperature of the damping fluid will also change after being squeezed multiple times, the temperature change will change the viscosity of the damping fluid, and then change the damping effect of the damper, affecting the seismic reliability of the building structure. Summary of the invention

[0003] Based on this, it is necessary to provide a prefabricated building steel structure connection node to address the technical problem that the current building steel structure has inconsistent seismic performance at different room temperatures.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A prefabricated building steel structure connection node comprises a steel column, wherein the steel column is provided with a support arm, wherein the support arm is used to place the ends of two steel beams, the end faces of the two steel beams are fixedly connected by bolts, and a damping assembly and a rotating mechanism are provided between the two steel beams, wherein the damping assembly is a circular liquid capsule, wherein the axis of the circular liquid capsule extends in the horizontal direction, and two first fan-shaped openings are symmetrically provided on the circumference of the circular liquid capsule, wherein the two first fan-shaped openings separate the interior of the damping assembly into a first chamber and a second chamber, wherein the volumes of the first chamber and the second chamber are equal, and a damping hole is provided between the first chamber and the second chamber, wherein a damping fluid is provided inside the damping assembly, and when the upper side or the lower side of the damping assembly is squeezed by the steel beam, the damping fluid flows between the first chamber and the second chamber through the damping hole; in the initial state, the first chamber and the second chamber are both inclined; and the rotating mechanism can push the damping assembly to rotate a certain angle according to the temperature of the damping fluid in the damping assembly, so that the damping of the damping assembly remains unchanged as the temperature of the damping fluid changes.

[0006] Furthermore, the rotating mechanism is provided with two groups, an upper group and a lower group, each rotating mechanism is fixedly arranged on the end face of a steel beam and is located on the periphery of the damping assembly; each rotating mechanism comprises an arc-shaped telescopic tube; the two arc-shaped telescopic tubes are symmetrically arranged about the center of the damping assembly, a baffle is fixedly arranged on one side wall of each of the first fan-shaped openings, the two baffles are symmetrically arranged on the damping assembly, and the end of the arc-shaped telescopic tube is engaged with the baffle.

[0007] Furthermore, in the initial state, the angle between the baffle and the horizontal plane is 30°, and the maximum rotation angle of the baffle is 30°.

[0008] Furthermore, the rotating mechanism also includes a fixed block, which is fixed on the end surface of the steel beam. A temperature sensor is provided on the fixed block, and the temperature sensor is used to detect the temperature of the surface of the damping component.

[0009] Furthermore, a hydraulic cylinder is provided on the steel beam, and the hydraulic cylinder is connected with the interior of the arc-shaped telescopic tube through a hydraulic circuit, and the hydraulic cylinder drives the arc-shaped telescopic tube to extend and retract.

[0010] Furthermore, two second fan-shaped openings are symmetrically provided on the circumference of the damping assembly, each of the second fan-shaped openings is located in the middle position between two adjacent first fan-shaped openings, and an annular spring is provided inside the second fan-shaped opening, which has a tendency to keep the second fan-shaped opening open.

[0011] Furthermore, a first V-shaped member is provided inside the first fan-shaped opening, and a second V-shaped member is provided inside the second fan-shaped opening. The first V-shaped member can open or contract the first fan-shaped opening, and the second V-shaped member can open or close the second fan-shaped opening. The distance between the first V-shaped member and the center of the damping assembly is smaller than the distance between the second V-shaped member and the center of the damping assembly.

[0012] Furthermore, a fixed shaft is provided at the center of the damping assembly, the damping hole corresponds to the fixed shaft, a sealing sleeve is provided on the fixed shaft, and the sealing sleeve prevents the damping fluid from contacting the fixed shaft.

[0013] Furthermore, fixed plates are fixed to both ends of the fixed shaft, and the fixed plates are fixedly connected to the steel beam.

[0014] Furthermore, the steel beams, steel columns and support arms are all I-beams.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a prefabricated building steel structure connection node, and the rotating mechanism can push the damping component to rotate a certain angle according to the temperature of the damping fluid in the damping component, so that the damping of the damping component remains unchanged as the temperature of the damping fluid changes. In this way, no matter how the temperature of the damping fluid changes due to the outdoor temperature, the damping of the damping component can be kept unchanged, thereby improving the stability of the building cylinder structure and improving the seismic reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a connection node of a prefabricated building steel structure provided by an embodiment of the present invention;

[0018] Figure 2 An exploded view of a connection node of a prefabricated building steel structure provided by an embodiment of the present invention;

[0019] Figure 3 A side view of a connection node of a prefabricated building steel structure provided by an embodiment of the present invention;

[0020] Figure 4 for Figure 3 Middle AA section view;

[0021] Figure 5 for Figure 4 Another state diagram of ;

[0022] Figure 6 for Figure 4 A magnified view of the structure at B in the middle;

[0023] Figure 7 for Figure 5 Enlarged view of the structure at point C in the middle.

[0024] in:

[0025] 100, steel column; 101, support arm; 103, gasket; 200, steel beam; 201, end face; 202, fixing block; 203, bolt; 204, hydraulic cylinder; 205, arc-shaped telescopic tube; 300, damping assembly; 301, first chamber; 302, second chamber; 303, first V-shaped member; 304, second V-shaped member; 305, annular spring; 306, fixed shaft; 307, baffle; 308, fixing plate; 309, damping hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is 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 a limitation to the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figures 1 to 7 As shown, an embodiment of the present invention provides an assembled building steel structure connection node, including a steel column 100, a support arm 101 is provided on the steel column 100, a gasket 103 is placed on the support arm 101, the end portions of two steel beams 200 are placed on the gasket 103, the end faces 201 of the two steel beams 200 are fixedly connected by bolts 203, and a damping component 300 and a rotating mechanism are provided between the two steel beams 200, the damping component 300 is a circular liquid capsule, the axis of the circular liquid capsule extends in the horizontal direction, and two first fan-shaped openings are symmetrically provided in the circumference of the circular liquid capsule, and the two first fan-shaped openings divide the interior of the damping component 300 into a first chamber 301 and a first chamber 302. The first chamber 301 and the second chamber 302 have the same volume. A damping hole 309 is provided between the first chamber 301 and the second chamber 302. A damping fluid is provided inside the damping assembly 300. When the upper or lower side of the damping assembly 300 is squeezed by the steel beam 200, the damping fluid flows between the first chamber 301 and the second chamber 302 through the damping hole 309. In the initial state, the first chamber 301 and the second chamber 302 are both inclined. The rotating mechanism can push the damping assembly 300 to rotate a certain angle according to the temperature of the damping fluid in the damping assembly 300, so that the damping of the damping assembly 300 remains unchanged as the temperature of the damping fluid changes. The damping assembly 300 is made of rubber material. When the steel beam 200 vibrates up and down, the steel beam 200 generates a large pressure on the damping assembly 300, which causes the damping assembly 300 to deform and promotes the flow of the damping fluid.

[0030] In one embodiment, the rotating mechanism is provided with two groups, one above the other, each rotating mechanism is fixedly arranged on the end face 201 of a steel beam 200 and is located at the periphery of the damping assembly 300; each rotating mechanism comprises an arc-shaped telescopic tube 205; two arc-shaped telescopic tubes 205 are symmetrically arranged about the center of the damping assembly 300, and a baffle 307 is fixedly arranged on one side wall of each of the first fan-shaped openings, and two baffles 307 are symmetrically arranged on the damping assembly 300, one of which is arranged in contact with the first chamber 301, and the other is arranged in contact with the second chamber 302; the end of the arc-shaped telescopic tube 205 is stopped and matched with the baffle 307. In this way, the two rotating mechanisms can drive the damping assembly 300 to rotate in the same direction. The baffle 307 extends from the outer peripheral surface of the damping assembly 300, so that it is convenient to contact the end of the arc-shaped telescopic tube 205. The arc-shaped telescopic tube 205 comprises an inner tube and an outer tube, and the inner tube and the outer tube are integrally formed. The end of the inner tube extends into the interior of the outer tube to realize the contraction of the arc-shaped telescopic tube 205 , and the end of the inner tube gradually extends out from the interior of the outer tube to realize the extension of the arc-shaped telescopic tube 205 .

[0031] In one embodiment, in the initial state, the angle between the baffle 307 and the horizontal plane is 30°, and the maximum rotation angle of the baffle 307 is 30°. One of the baffles 307 is located at the lower left position of the damping assembly 300, and the other baffle 307 is located at the upper right position of the damping assembly 300. After the baffles 307 rotate to the maximum rotation angle, the two baffles 307 are both in a horizontal state, so that the first chamber 301 and the second chamber 302 are in an upper and lower position, the first chamber 301 corresponds to the upper half of the steel beam 200, and the second chamber 302 corresponds to the lower half of the steel beam 200.

[0032] In one embodiment, the rotating mechanism further includes a fixed block 202, the fixed block 202 is fixed on the end surface 201 of the steel beam 200, and a temperature sensor is provided on the fixed block 202, and the temperature sensor is used to detect the surface temperature of the damping assembly 300. The surface temperature of the damping assembly 300 is proportional to the temperature of the damping fluid inside the damping assembly 300, so that the higher the temperature of the damping fluid, the higher the surface temperature of the damping assembly 300.

[0033] In one embodiment, a hydraulic cylinder 204 is provided on the steel beam 200, and the hydraulic cylinder 204 is connected to the interior of the arc-shaped telescopic tube 205 through a hydraulic circuit. A controller is provided to control the extension and retraction of the hydraulic cylinder 204 according to the temperature detected by the temperature sensor, and the hydraulic cylinder 204 drives the arc-shaped telescopic tube 205 to extend and retract.

[0034] In one embodiment, the hydraulic cylinder 204 and the temperature sensor may not be provided, and a heat conducting sheet is provided on the fixed block 202, and an expansion gas is provided inside the arc-shaped telescopic tube 205, one end of the heat conducting sheet is provided in contact with the side of the damping assembly 300, and the other end is provided in contact with the end of the arc-shaped telescopic tube 205, so that when the surface temperature of the damping assembly 300 increases, the expansion gas inside the arc-shaped telescopic tube 205 expands and the arc-shaped telescopic tube 205 is extended. The expansion gas is air.

[0035] In one embodiment, two second fan-shaped openings are symmetrically provided on the circumference of the damping assembly 300, each of which is located at the middle position between two adjacent first fan-shaped openings, and an annular spring 305 is provided inside the second fan-shaped opening, and the annular spring 305 has a tendency to keep the second fan-shaped opening open. The second fan-shaped opening is provided so that the deformation of the damping assembly 300 is concentrated there, reducing the deformation of other positions of the damping assembly 300.

[0036] In other embodiments, a plurality of second fan-shaped openings may be provided.

[0037] In one embodiment, a first V-shaped member 303 is disposed inside the first fan-shaped opening, and a second V-shaped member 304 is disposed inside the second fan-shaped opening. The first V-shaped member 303 can open or contract the first fan-shaped opening, and the second V-shaped member 304 can open or close the second fan-shaped opening. The distance between the first V-shaped member 303 and the center of the damping assembly 300 is smaller than the distance between the second V-shaped member 304 and the center of the damping assembly 300. In this way, the influence of the second fan-shaped opening on the flow of the damping fluid is minimized.

[0038] In one embodiment, a fixed shaft 306 is disposed at the center of the damping assembly 300 , the damping hole 309 corresponds to the fixed shaft 306 , and a sealing sleeve is disposed on the fixed shaft 306 , which prevents the damping fluid from contacting the fixed shaft 306 .

[0039] In one embodiment, fixing plates 308 are fixed to both ends of the fixing shaft 306 , and the fixing plates 308 are fixedly connected to the steel beam 200 .

[0040] In one embodiment, the steel beam 200 , the steel column 100 and the support arm 101 are all I-beams.

[0041] In combination with the above embodiments, the use principle and working process of the embodiments of the present invention are as follows:

[0042] As the steel beam 200 reciprocates up and down, the damping assembly 300 is squeezed to make the damping fluid inside flow between the first chamber 301 and the second chamber 302, so that the temperature of the damping fluid gradually increases. Under the influence of the room temperature environment, the temperature of the damping fluid will also change with the room temperature. The nature of the damping fluid is that the increase in temperature will cause the viscosity of the damping fluid to decrease, thereby reducing the friction resistance inside it, and then reducing the damping effect of the mechanical device; while the decrease in temperature will cause the viscosity of the damping fluid to increase, increase the friction resistance inside it, and thus increase the damping effect of the mechanical device.

[0043] In the initial state, if Figure 6 As shown, the angle between the two baffles 307 and the horizontal plane is 30°, the baffle 307 in contact with the first chamber 301 is located at the lower left position, and the baffle 307 in contact with the second chamber 302 is located at the upper right position. At this time, when the steel beam 200 swings up and down, the end surface 201 of the steel beam 200 will alternately squeeze the upper and lower parts of the damping assembly 300, and then squeeze a part of the first chamber 301 and a part of the second chamber 302 respectively, so that the damping fluid flows in the up and down direction. Since the first fan-shaped opening is inclined, the resistance to the damping fluid in the first chamber 301 and the second chamber 302 is small, so the damping effect is small.

[0044] When the temperature sensor detects that the temperature of the surface of the damping assembly 300 has increased, it indicates that the temperature of the internal damping fluid has increased. The temperature increase of the damping fluid may be caused by room temperature, or it may be caused by friction during the reciprocating flow of the damping fluid. During the up and down vibration of the steel beam 200, if the steel beam 200 vibrates upward and squeezes the upper part of the damping assembly 300, the upper part of the damping assembly 300 remains stationary, and the hydraulic oil cylinder 204 of the two rotating mechanisms is controlled to inject hydraulic oil into the arc-shaped telescopic tube 205, so that the two arc-shaped telescopic tubes 205 push the baffle 307 to rotate clockwise around the fixed axis 306 respectively. At this time, the arc-shaped telescopic tube 205 on the upper right cannot be extended due to pressure, so that it maintains a power storage state, and the baffle 205 on the upper right remains stationary. The arc-shaped telescopic tube 205 on the lower left causes the baffle 307 on the lower left to rotate to a state gradually approaching the horizontal state, and then the baffle 307 pushes the damping assembly 300, so that the contacting part thereof is compressed and deformed. When the steel beam 200 no longer squeezes the upper part of the damping assembly 300, the compressed and deformed part recovers to close the second fan-shaped opening at the top, and the annular spring 305 inside it contracts and accumulates force. Then, the annular spring 305 pushes the second fan-shaped opening to open under its own elastic force, and at the same time, the arc-shaped telescopic tube 205 at the top is released. Under the joint action of the annular spring 305 and the arc-shaped telescopic tube 205 at the top, the rest of the upper part of the damping assembly 300 continues to rotate clockwise. At this time, when the steel beam 200 vibrates downward and squeezes the lower part of the damping assembly 300, the lower part of the damping assembly 300 remains stationary, and the arc-shaped telescopic tube 205 at the lower left cannot be extended due to pressure, and it remains in a force-accumulating state, and the baffle 205 at the lower left remains stationary. The upper right rotating mechanism pushes the arc-shaped telescopic tube 205 to squeeze the upper right baffle 307, so that the upper right baffle 307 gradually approaches the horizontal state, and then the baffle 307 pushes the damping assembly 300, so that the contacted part is compressed and deformed. When the steel beam 200 no longer squeezes the lower half of the damping assembly 300, the compressed and deformed part is restored. First, the lower second fan-shaped opening is closed, and the annular spring 305 inside it contracts and accumulates force. Then the annular spring 305 pushes the second fan-shaped opening to open under its own elastic force, and at the same time, the lower arc-shaped telescopic tube 205 is released. Under the joint action of the annular spring 305 and the lower arc-shaped telescopic tube 205, the rest of the lower half of the damping assembly 300 continues to rotate clockwise. In the process of the steel beam 200 constantly reciprocating up and down, the two rotating mechanisms alternately rotate the upper and lower parts of the damping assembly 300 clockwise, thereby realizing the overall clockwise rotation of the damping assembly 300, and the two baffles 307 gradually approach the horizontal state.

[0045] After the rotation of the damping assembly 300, since the two first fan-shaped openings are close to a horizontal state, the damping fluid in the first chamber 301 and the second chamber 302 encounters greater resistance when flowing up and down, which reduces the speed of the damping fluid flowing up and down, thereby increasing the damping effect of the damping fluid. The increased damping is offset by the reduced damping of the damping fluid due to the decrease in viscosity, so that the damping effect of the damping assembly 300 remains unchanged, thereby improving the seismic reliability of the steel building structure.

Claims

1. A prefabricated building steel structure connection node, characterized in that: The invention comprises a steel column, on which a support arm is provided, and the support arm is used to place the ends of two steel beams, the end faces of the two steel beams are fixedly connected by bolts, and a damping assembly and a rotating mechanism are provided between the two steel beams, the damping assembly is a circular liquid capsule, the axis of the circular liquid capsule extends in the horizontal direction, and two first fan-shaped openings are symmetrically provided in the circumference of the circular liquid capsule, and the two first fan-shaped openings divide the interior of the damping assembly into a first chamber and a second chamber, the volumes of the first chamber and the second chamber are equal, a damping hole is provided between the first chamber and the second chamber, and a damping fluid is provided inside the damping assembly, and when the upper side or the lower side of the damping assembly is squeezed by the steel beam, the damping fluid flows between the first chamber and the second chamber through the damping hole; in the initial state, the first chamber and the second chamber are both inclined; the rotating mechanism can push the damping assembly to rotate a certain angle according to the temperature of the damping fluid in the damping assembly, so that the damping assembly The damping of the component remains unchanged as the temperature of the damping fluid changes. The rotating mechanism is provided with two upper and lower groups, each of which is fixedly arranged on the end face of a steel beam and located on the periphery of the damping assembly; each of the rotating mechanisms includes an arc-shaped telescopic tube; the two arc-shaped telescopic tubes are symmetrically arranged about the center of the damping assembly, and a baffle is fixedly arranged on one side wall of each of the first fan-shaped openings, and the two baffles are symmetrically arranged on the damping assembly, and the end of the arc-shaped telescopic tube is matched with the baffle to stop. In the initial state, the angle between each of the baffles and the horizontal plane is 30°, and the maximum rotation angle of the baffle is 30°. The rotating mechanism also includes a fixed block, which is fixed on the end face of the steel beam, and a temperature sensor is provided on the fixed block. The temperature sensor is used to detect the temperature of the surface of the damping assembly. A hydraulic cylinder is provided on the steel beam, and the hydraulic cylinder is connected to the inside of the arc-shaped telescopic tube through a hydraulic circuit, and the hydraulic cylinder drives the arc-shaped telescopic tube to extend and retract.

2. The prefabricated building steel structure connection node according to claim 1, characterized in that: The damping assembly is also symmetrically provided with two second fan-shaped openings in the circumferential direction, each of the second fan-shaped openings is located in the middle position between two adjacent first fan-shaped openings, and an annular spring is provided inside the second fan-shaped opening, and the annular spring has a tendency to keep the second fan-shaped opening open.

3. The prefabricated building steel structure connection node according to claim 2, characterized in that: A first V-shaped member is provided inside the first fan-shaped opening, and a second V-shaped member is provided inside the second fan-shaped opening. The first V-shaped member can open or contract the first fan-shaped opening, and the second V-shaped member can open or close the second fan-shaped opening. The distance between the first V-shaped member and the center of the damping assembly is smaller than the distance between the second V-shaped member and the center of the damping assembly.

4. The prefabricated building steel structure connection node according to claim 3, characterized in that: A fixed shaft is arranged at the center of the damping assembly, the damping hole corresponds to the fixed shaft, a sealing sleeve is arranged on the fixed shaft, and the sealing sleeve prevents the damping fluid from contacting the fixed shaft.

5. The prefabricated building steel structure connection node according to claim 4, characterized in that: Fixed plates are fixed at both ends of the fixed shaft, and the fixed plates are fixedly connected to the steel beam.

6. The prefabricated building steel structure connection node according to claim 1, characterized in that: The steel beams, steel columns and support arms are all I-beams.

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