A high-strength building beam-column connection node

Abstract

The present invention relates to the field of building steel structures, and in particular to a high-strength building beam-column connection node, which is used to connect a crossbeam and two beams and columns. The crossbeam includes a first crossbeam, a second crossbeam, a first rotating rod and a second rotating rod, and a spacing is provided between the first crossbeam and the second crossbeam; the two ends of the first rotating rod are respectively rotatably connected to the first crossbeam and the second crossbeam, and the two ends of the second rotating rod are respectively rotatably connected to the first crossbeam and a second crossbeam. Through the matching arrangement of the first rotating rod and the second rotating rod with the first crossbeam and the second crossbeam respectively, the first rotating rod, the second rotating rod, the first crossbeam and the second crossbeam constitute a four-bar linkage mechanism, when and only when the first crossbeam is deformed by pressure from above, the length in the horizontal direction is shortened, and the first rotating rod and the second rotating rod corresponding to the two ends of the first crossbeam are respectively rotated around their rotation axes on the second crossbeam, to compensate for the shortened length of the first crossbeam in the horizontal direction, and reduce the tension on the beam and column after the first crossbeam is deformed.

Description

Technical Field

[0001] The invention relates to the field of building steel structures, in particular to a high-strength building beam-column connection node. Background Art

[0002] Steel structure connection components refer to the carriers that connect steel structure components or parts to each other. Prefabricated steel structure buildings and prefabricated steel structure bridges are mostly made of steel structure connection components assembled on site, which is more efficient than traditional cast-in-place concrete structures.

[0003] At present, there are three ways to connect steel structure beams and columns to beams, namely full welding, full bolting, and bolt-welding hybrid connection. Each of the three methods has its own advantages and disadvantages, but when the beam is subjected to downward pressure, the bending of the beam shortens its horizontal length, which in turn pulls the beam inward, causing the beam to bend and deform. The existing technology uses bolt connections to create rotating connection points to adapt to the bending of the beam to a small extent, but in the case of large deformation of the beam such as earthquakes, the beam will still bend and deform inward, posing a huge safety hazard. Summary of the invention

[0004] Based on this, it is necessary to provide a high-strength building beam-column connection node to address the problem that the current large deformation of the beam will affect the structural strength of the beam-column.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A high-strength building beam-column connection node is used to connect a crossbeam and two beams, the two beams are arranged on a first plane, and the two beams are arranged in sequence from left to right on the first plane, the first plane is vertically arranged, the crossbeam is arranged between the two beams, the crossbeam includes a first crossbeam, a second crossbeam and a connection mechanism, the first crossbeam is horizontally arranged on the first plane, two second crossbeams are provided, and are respectively provided on the two beams, the first crossbeam is located between the two second crossbeams, and a spacing is provided between the first crossbeam and the second crossbeam; two connection mechanisms are provided, the two connection mechanisms are symmetrically arranged about the first crossbeam on the first plane, and each connection mechanism includes a first crossbeam, a second crossbeam and a connection mechanism. A rotating rod, a second rotating rod and a reset member, wherein two ends of the first rotating rod are rotatably connected to the first beam and the second beam respectively, and two ends of the second rotating rod are rotatably connected to the first beam and the second beam respectively, and the rotation axes of the first rotating rod and the second rotating rod are respectively perpendicular to the first plane; in an initial state, one end of the first rotating rod rotatably connected to the first beam is higher than one end of the first rotating rod rotatably connected to the second beam, and one end of the second rotating rod rotatably connected to the first beam is higher than one end of the second rotating rod rotatably connected to the second beam; the reset member is arranged on the first beam and the second beam, and is used to provide a buffering force and a reset force for the first beam after being subjected to pressure.

[0007] Preferably, the second rotating rod is located below the first rotating rod, and the angle between the first rotating rod and the horizontal plane is greater than the angle between the second rotating rod and the horizontal plane.

[0008] Preferably, there are two reset members in each connecting mechanism, each reset member includes a fixed part and an elastic part, there are two fixed parts, the two fixed parts are respectively arranged on the first beam and the second beam, the elastic part is arranged between the two fixed parts, and the elastic part is fixedly connected to the two fixed parts respectively.

[0009] Preferably, the elastic part is made of spring steel sheet, the middle part of the spring steel sheet is arched in the direction away from the first beam and the second beam, the arched part of the spring steel sheet is divided into a large end and a small end, the large end is located above the small end, and the line connecting the large end and the small end extends along the length extension direction of the projection of the gap between the first beam and the second beam on the first plane.

[0010] Preferably, the first rotating rod includes a first section, a second section and a first sleeve, one end of the first section is rotatably connected to the second beam, one end of the second section is rotatably connected to the first beam, the first sleeve is sleeved on the first section and the second section, the circumferential surfaces of the first section and the second section are respectively provided with external threads with opposite rotation directions, the interior of the first sleeve is provided with an internal thread compatible with the first section and the second section, and the first sleeve is threadedly connected to the first section and the second section; the second rotating rod has the same structural features as the first rotating rod.

[0011] Preferably, a viscous damper is provided between the first crossbeam and the second crossbeam, two ends of the viscous damper are rotatably connected to the first crossbeam and the second crossbeam respectively, and a rotation axis of the viscous damper is perpendicular to the first plane.

[0012] Preferably, a plurality of viscous dampers are provided, and the plurality of viscous dampers are distributed in sequence in the extending direction of the line between the first rotating rod and the second rotating rod.

[0013] Preferably, the plurality of viscous dampers are arranged obliquely compared to the first rotating rod and the second rotating rod.

[0014] Preferably, the projection of the first crossbeam on the first plane is an isosceles trapezoid, and the upper base of the isosceles trapezoid is located below its lower base, and the two surfaces of the second crossbeam and the first crossbeam that are close to each other are parallel to each other, and in an initial state, the first rotating rod is located above a perpendicular line from a rotation axis of the first rotating rod on the second crossbeam to an end face of the first crossbeam, and the second rotating rod is located above a perpendicular line from a rotation axis of the second rotating rod on the second crossbeam to an end face of the first crossbeam.

[0015] Preferably, the connection mechanism further comprises an angle steel, wherein the angle steel is provided with two sides, wherein one side is connected to the beam-column bolts, and the other side is connected to the second beam bolts.

[0016] The beneficial effects of the present invention are as follows: through the coordinated arrangement of the first crossbeam and the second crossbeam, the first crossbeam can move relative to the second crossbeam, that is, the first crossbeam can move relative to the beam column, and a reset member is provided. When the first crossbeam moves relative to the beam column under pressure, the reset member can buffer the movement of the first crossbeam, reduce the deformation of the first crossbeam, and provide a restoring force for the first crossbeam, so that the first crossbeam can be used multiple times; through the coordinated arrangement of the first rotating rod and the second rotating rod with the first crossbeam and the second crossbeam respectively, the first rotating rod, the second rotating rod, the first crossbeam and the second crossbeam constitute a four-bar linkage mechanism, and at the same time, when and only when the first crossbeam is subjected to pressure from above, the first crossbeam is deformed, the length in the horizontal direction is shortened, the two ends of the first crossbeam approach each other, and the first rotating rod and the second rotating rod corresponding to the two ends of the first crossbeam respectively rotate around their rotation axes on the second crossbeam to compensate for the shortened length of the first crossbeam in the horizontal direction, and reduce the pulling force on the beam column after the first crossbeam is deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a high-strength building beam-column connection node provided by an embodiment of the present invention;

[0018] Figure 2 A front view of a high-strength building beam-column connection node provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of the cooperation between a first rotating rod and a second rotating rod of a high-strength building beam-column connection node provided by an embodiment of the present invention;

[0020] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0021] Figure 5 A local state diagram of a first crossbeam of a high-strength building beam-column connection node after being compressed provided by an embodiment of the present invention;

[0022] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0023] Figure 7 A schematic structural diagram of a first rotating rod of a high-strength building beam-column connection node provided by an embodiment of the present invention.

[0024] Among them: 100, beam column; 201, first crossbeam; 202, second crossbeam; 203, first rotating rod; 204, second rotating rod; 205, reset member; 2031, first section; 2032, second section; 2033, first sleeve; 206, viscous damper; 207, angle steel. DETAILED DESCRIPTION

[0025] 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.

[0026] 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 the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship 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.

[0027] 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.

[0028] like Figures 1 to 7As shown, an embodiment of the present invention provides a high-strength building beam-column connection node, which is used to connect a crossbeam and two beams 100. The two beams 100 are arranged on a first plane, and the two beams 100 are arranged in sequence from left to right on the first plane. The first plane is vertically arranged, and the crossbeam is arranged between the two beams 100. The crossbeam includes a first crossbeam 201, a second crossbeam 202 and a connection mechanism. The first crossbeam 201 is horizontally arranged on the first plane. Two second crossbeams 202 are provided, which are respectively arranged on the two beams 100. The first crossbeam 201 is located between the two second crossbeams 202, and a spacing is provided between the first crossbeam 201 and the second crossbeam 202; there are two connection mechanisms, which are symmetrically arranged about the first crossbeam 201 on the first plane, and each connection mechanism includes a first rotating rod 203, The second rotating rod 204 and the reset member 205, the two ends of the first rotating rod 203 are rotatably connected to the first beam 201 and the second beam 202 respectively, the two ends of the second rotating rod 204 are rotatably connected to the first beam 201 and the second beam 202 respectively, and the rotation axes of the first rotating rod 203 and the second rotating rod 204 are respectively perpendicular to the first plane; in the initial state, the end of the first rotating rod 203 rotatably connected to the first beam 201 is higher than the end of the first rotating rod 203 rotatably connected to the second beam 202, and the end of the second rotating rod 204 rotatably connected to the first beam 201 is higher than the end of the second rotating rod 204 rotatably connected to the second beam 202; the reset member 205 is arranged on the first beam 201 and the second beam 202, and is used to provide a buffering force and a reset force for the first beam 201 after being subjected to pressure.

[0029] Through the coordinated arrangement of the first crossbeam 201 and the second crossbeam 202, the first crossbeam 201 can move relative to the second crossbeam 202, that is, the first crossbeam 201 can move relative to the beam column 100, and a reset member 205 is provided. When the first crossbeam 201 moves relative to the beam column 100 under pressure, the reset member 205 can buffer the movement of the first crossbeam 201, reduce the deformation of the first crossbeam 201, and provide a restoring force for the first crossbeam 201, so that the first crossbeam 201 can be used multiple times; the first rotating rod 203 and the second rotating rod 204 are respectively connected to the first crossbeam 201 and the second crossbeam 202, and the reset member 205 can be used to reduce the deformation of the first crossbeam 201 and provide a restoring force for the first crossbeam 201, so that the first crossbeam 201 can be used multiple times; 202, the first rotating rod 203, the second rotating rod 204, the first beam 201 and the second beam 202 form a four-bar linkage. At the same time, when and only when the first beam 201 is subjected to pressure from above, the first beam 201 is deformed, the length in the horizontal direction is shortened, the two ends of the first beam 201 approach each other, and the first rotating rod 203 and the second rotating rod 204 corresponding to the two ends of the first beam 201 respectively rotate around their rotation axes on the second beam 202, compensating for the shortened length of the first beam 201 in the horizontal direction, and reducing the tension generated on the beam column 100 after the first beam 201 is deformed.

[0030] In this embodiment, the second rotating rod 204 is located below the first rotating rod 203, and the angle between the first rotating rod 203 and the horizontal plane is greater than the angle between the second rotating rod 204 and the horizontal plane. After the first crossbeam 201 is compressed, the first rotating rod 203 and the second rotating rod 204 will rotate around their respective rotation axes on the second crossbeam 202. Before crossing the horizontal plane and before the first crossbeam 201 undergoes irreversible deformation, the first rotating rod 203 and the second rotating rod 204 will exert a force on the second crossbeam 202 to move away from the second crossbeam. The thrust of the first crossbeam 201 is achieved by the coordinated setting of the angles between the first rotating rod 203 and the second rotating rod 204 and the horizontal plane. The second rotating rod 204 crosses the horizontal plane earlier than the first rotating rod 203. At this time, the thrust exerted by the second rotating rod 204 on the second crossbeam 202 away from the first crossbeam 201 is converted into a pulling force for the second crossbeam 202 to approach the first crossbeam 201, thereby offsetting the thrust exerted by the first rotating rod 203 on the second crossbeam 202, so that the beam column 100 is not easily deformed.

[0031] In this embodiment, there are two reset members 205 in each connecting mechanism, and the two reset members 205 are symmetrically arranged relative to the first beam 201, which can provide a good supporting effect on the first beam 201, and at the same time increase its buffering and shock-absorbing effect after the first beam 201 is deformed. Each reset member 205 includes a fixed part and an elastic part. There are two fixed parts, and the two fixed parts are respectively arranged on the first beam 201 and the second beam 202. The elastic part is arranged between the two fixed parts, and the elastic part is fixedly connected to the two fixed parts respectively. After the first beam 201 is deformed under pressure, the fixed part on the first beam 201 will move relative to the other fixed part, and the elastic part will be pulled and deformed, and at the same time a force is generated to prevent the fixed part from moving, thereby slowing down the movement of the first beam 201.

[0032] In this embodiment, a spring steel sheet is used as the elastic part, and the middle part of the spring steel sheet is arched in the direction away from the first beam 201 and the second beam 202. The arched part of the spring steel sheet is divided into a large end and a small end, and the large end is located above the small end. The line connecting the large end and the small end extends along the length extension direction of the projection of the gap between the first beam 201 and the second beam 202 on the first plane. When the first beam 201 is compressed and bent, the end of the first beam 201 close to the inner arc surface moves a lot in the horizontal direction, so the large end of the spring steel sheet can adapt to the stretching amount there. At the same time, the shape of the spring steel sheet can adapt to the misalignment of the first beam 201 and the second beam 202 on the first plane and cause a certain degree of twisting, thereby accumulating a certain amount of energy, and driving the first beam 201 to reset after the force applied to it disappears.

[0033] In this embodiment, the first rotating rod 203 includes a first section 2031, a second section 2032 and a first sleeve 2033. One end of the first section 2031 is rotatably connected to the second crossbeam 202, and one end of the second section 2032 is rotatably connected to the first crossbeam 201. The first sleeve 2033 is sleeved on the first section 2031 and the second section 2032. The circumferential surfaces of the first section 2031 and the second section 2032 are respectively provided with external threads with opposite rotation directions. The interior of the first sleeve 2033 is provided with an internal thread matched with the first section 2031 and the second section 2032. The first sleeve 2033 is threadedly connected to the first section 2031 and the second section 2032. When the first sleeve 2033 and the second section 2032 rotate, the end of the first section 2031 away from the second crossbeam 202 and the end of the second section 2032 away from the first crossbeam 201 move away from or approach each other. A handle is provided on the first sleeve 2033 for easy rotation. The rod 204 has the same structural features as the first rotating rod 203. The first rotating rod 203 includes a third section, a fourth section and a second sleeve. One end of the third section is rotatably connected to the second beam 202, and one end of the third section is rotatably connected to the first beam 201. The second sleeve is sleeved on the third section and the fourth section. The circumferential surfaces of the third section and the fourth section are respectively provided with external threads with opposite rotation directions. The interior of the second sleeve is provided with an internal thread matched with the third section and the fourth section. The second sleeve is threadedly connected to the third section and the fourth section. When the third section and the fourth section of the second sleeve rotate, the end of the third section away from the second beam 202 and the end of the fourth section away from the first beam 201 move away from or close to each other. After the second beam 202 is installed on the beam column 100, the angles between the first section 2031 and the third section and the horizontal plane can be adjusted by rotating the first sleeve 2033 and the second sleeve, and the pressure bearing value of the first beam 201 can be adjusted to make the first beam 201 in the best state.

[0034] In this embodiment, a viscous damper 206 is provided between the first beam 201 and the second beam 202. The two ends of the viscous damper 206 are rotatably connected to the first beam 201 and the second beam 202 respectively. The rotation axis of the viscous damper 206 is perpendicular to the first plane. After the first beam 201 moves relative to the second beam 202, the spacing between the first beam 201 and the second beam 202 changes, and the plurality of viscous dampers 206 are extended or shortened. When the length of the viscous damper 206 changes, the impact energy received by the first beam 201 can be absorbed. A plurality of viscous dampers 206 are provided, and the plurality of viscous dampers 206 are sequentially distributed in the extension direction of the line between the first rotating rod 203 and the second rotating rod 204. The plurality of viscous dampers 206 can absorb the impact energy received by the first beam 201 to a great extent. The multiple viscous dampers 206 are tilted compared to the first rotating rod 203 and the second rotating rod 204. When the first beam 201 is deformed, the expansion and contraction amount of the viscous dampers 206 parallel to the first rotating rod 203 and the second rotating rod 204 changes slightly and fails to absorb energy.

[0035] In this embodiment, the projection of the first crossbeam 201 on the first plane is an isosceles trapezoid, and the upper base of the isosceles trapezoid is located below its lower base, and the two surfaces of the second crossbeam 202 and the first crossbeam 201 that are close to each other are parallel to each other. After the connection mechanism fails, the second crossbeam 202 can still support the first crossbeam 201 through the inclined surface; in the initial state, the first rotating rod 203 is located above the perpendicular line from the rotation axis of the first rotating rod 203 on the second crossbeam 202 to the end face of the first crossbeam 201, and the second rotating rod 204 is located at the second rotating rod 204 From the rotation axis on the second beam 202 to the vertical line of the end face of the first beam 201, after the length of the first beam 201 in the horizontal direction is shortened due to pressure, the distance between the first beam 201 and the second beam 202 is shortened, and the rotation of the first rotating rod 203 and the second rotating rod 204 can compensate for the shortened length of the first beam 201. Before the first rotating rod 203 and the second rotating rod 204 are perpendicular to the end face of the first beam 201, the first rotating rod 203 and the second rotating rod 204 apply a thrust to the second beam 202 away from the first beam 201.

[0036] In this embodiment, the connecting mechanism also includes an angle steel 207, which has two sides, one of which is bolted to the beam column 100, and the other is bolted to the second cross beam 202. The angle steel 207 not only ensures the connection strength between the second cross beam 202 and the beam column 100, but also enables the second cross beam 202 to have a smaller range of motion relative to the beam column 100, further reducing the probability of deformation of the beam column 100.

[0037] The working principle and working method of a high-strength building beam-column connection node provided in this embodiment are as follows:

[0038] First, the angle steel 207 is installed on the beam column 100 by bolts. When the angle steel 207 is installed on the two beam columns 100, the two second beams 202 are then installed on the corresponding angle steel 207 of the beam column 100 by bolts. Then the first sleeve 2033 and the second sleeve are rotated. The rotation of the first sleeve 2033 drives the first section 2031 and the second section 2032 to move away from or closer to each other, and the rotation of the second sleeve drives the third section and the fourth section to move away from or closer to each other. Then the distance between the first beam 201 and the second beam 202 is adjusted. At the same time, the angle between the first rotating rod 203 and the second rotating rod 204 and the end face of the first beam 201 can be adjusted so that the first rotating rod 203 and the second rotating rod 204 are in a suitable position; then the reset member 205 is installed on the first beam 201 and the second beam 202 by bolts, and the large end of the spring steel sheet is located above its small end.

[0039] When the first crossbeam 201 is subjected to pressure from above, the first crossbeam 201 undergoes elastic deformation to be concave downward. At this time, the two ends of the first crossbeam 201 are tilted upward relative to the middle part and approach the middle part. When the length of the first crossbeam 201 in the horizontal direction is shortened, the first crossbeam 201 pulls the first rotating rod 203 and the second rotating rod 204 to rotate around their respective rotation axes on the second crossbeam 202 to compensate for the length lost in the horizontal direction of the first crossbeam 201. Due to the rotation of the first rotating rod 203 and the second rotating rod 204, the first crossbeam 201 and the second crossbeam 202 are 2 changes, the viscous damper 206 starts to expand and contract, absorbing the impact energy of the first beam 201; at the same time, the first beam 201 is fixed by the reset member 205 to pull its elastic part to deform, and the deformation of the elastic part accumulates to a certain amount of energy. When the impact on the first beam 201 disappears and the deformation of the first beam 201 is within the range of its own elastic deformation, the first beam 201 moves in the opposite direction under the action of the energy accumulated in the elastic part and the first beam 201 itself, driving the first rotating rod 203, the second rotating rod 204 and the viscous damper 206 to reset.

[0040] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-strength building beam-column connection node, used to connect a crossbeam and two beams, the two beams are arranged on a first plane, and the two beams are arranged from left to right on the first plane, the first plane is vertically arranged, and the crossbeam is arranged between the two beams, characterized in that: The crossbeam comprises a first crossbeam, a second crossbeam and a connecting mechanism, the first crossbeam is horizontally arranged on a first plane, two second crossbeams are provided, which are respectively arranged on two beam columns, the first crossbeam is located between the two second crossbeams, and a spacing is provided between the first crossbeam and the second crossbeam; there are two connecting mechanisms, which are symmetrically arranged about the first crossbeam on the first plane, and each connecting mechanism comprises a first rotating rod, a second rotating rod and a reset member, two ends of the first rotating rod are rotatably connected to the first crossbeam and the second crossbeam respectively, and two ends of the second rotating rod are rotatably connected to the first crossbeam and the second crossbeam respectively, and the rotation axes of the first rotating rod and the second rotating rod are respectively perpendicular to the first plane; in an initial state, one end of the first rotating rod rotatably connected to the first crossbeam is higher than one end of the first rotating rod rotatably connected to the second crossbeam, and one end of the second rotating rod rotatably connected to the first crossbeam is higher than one end of the second rotating rod rotatably connected to the second crossbeam; the reset member is provided on the first crossbeam and the second crossbeam, and is used to provide a buffering force and a reset force for the first crossbeam after being subjected to pressure; The second rotating rod is located below the first rotating rod, and the angle between the first rotating rod and the horizontal plane is greater than the angle between the second rotating rod and the horizontal plane; There are two reset members in each connection mechanism, each reset member includes a fixed portion and an elastic portion, there are two fixed portions, the two fixed portions are respectively arranged on the first beam and the second beam, the elastic portion is arranged between the two fixed portions, and the elastic portion is respectively fixedly connected to the two fixed portions; The elastic part is made of a spring steel sheet, the middle part of the spring steel sheet is arched in a direction away from the first cross beam and the second cross beam, the arched part of the spring steel sheet is divided into a large end and a small end, the large end is located above the small end, and the connecting line of the large end and the small end extends along the length extension direction of the projection of the gap between the first cross beam and the second cross beam on the first plane; The first rotating rod comprises a first section, a second section and a first sleeve, one end of the first section is rotatably connected to the second crossbeam, one end of the second section is rotatably connected to the first crossbeam, the first sleeve is sleeved on the first section and the second section, the circumferential surfaces of the first section and the second section are respectively provided with external threads with opposite rotation directions, the interior of the first sleeve is provided with internal threads matching the first section and the second section, and the first sleeve is threadedly connected to the first section and the second section; the second rotating rod has the same structural features as the first rotating rod; The projection of the first crossbeam on the first plane is an isosceles trapezoid, and the upper base of the isosceles trapezoid is located below its lower base. The two surfaces of the second crossbeam and the first crossbeam that are close to each other are parallel to each other. In an initial state, the first rotating rod is located above a perpendicular line from the rotation axis of the first rotating rod on the second crossbeam to the end face of the first crossbeam, and the second rotating rod is located above a perpendicular line from the rotation axis of the second rotating rod on the second crossbeam to the end face of the first crossbeam.

2. A high-strength building beam-column connection node according to claim 1, characterized in that: A viscous damper is provided between the first crossbeam and the second crossbeam, two ends of the viscous damper are rotatably connected to the first crossbeam and the second crossbeam respectively, and a rotation axis of the viscous damper is perpendicular to the first plane.

3. A high-strength building beam-column connection node according to claim 2, characterized in that: A plurality of viscous dampers are provided, and the plurality of viscous dampers are sequentially distributed in the extending direction of the line between the first rotating rod and the second rotating rod.

4. A high-strength building beam-column connection node according to claim 3, characterized in that: The plurality of viscous dampers are arranged tilted relative to the first rotating rod and the second rotating rod.

5. The high-strength building beam-column connection node according to claim 1, characterized in that: The connecting mechanism also includes an angle steel, which is provided with two sides, one side of which is connected with the beam-column bolts, and the other side of which is connected with the second crossbeam bolts.

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