CN112252486A - Steel structure connecting node - Google Patents
Steel structure connecting node Download PDFInfo
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- CN112252486A CN112252486A CN202011199911.3A CN202011199911A CN112252486A CN 112252486 A CN112252486 A CN 112252486A CN 202011199911 A CN202011199911 A CN 202011199911A CN 112252486 A CN112252486 A CN 112252486A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 93
- 239000010959 steel Substances 0.000 title claims abstract description 93
- 238000013016 damping Methods 0.000 claims abstract description 180
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005381 potential energy Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention relates to the technical field of structural engineering, in particular to a steel structure connecting node. The steel column is connected with the steel beam through the node base and the node top cover, and a shear bolt is arranged between the steel beam and the node top cover; damping cylinders are arranged in the node base and are movably hinged with the steel beam through connecting arms, and disc springs are arranged between every two adjacent damping cylinders and between each damping cylinder and the node base; the steel beam shakes left and right in the earthquake and drives the damping cylinder to move up and down, and the disc spring is stretched or compressed in the up and down movement process of the damping cylinder, so that the disc spring can be matched with the damping cylinder to consume earthquake energy. The steel structure connecting node provided by the invention forms triple energy consumption measures by mutual matching of the shear bolt, the damping cylinder and the disc spring, so that the shock resistance of the node is greatly improved while the connecting strength of the node is ensured, and the safety and reliability of a building are ensured.
Description
Technical Field
The invention relates to the technical field of structural engineering, in particular to a steel structure connecting node.
Background
The fabricated steel structure system is a building produced by fabricating house units or members in accordance with uniform and standardized building component specifications, and then transporting the building to a construction site for assembly in place. The method has the characteristics of light building weight, energy conservation, environmental protection, high construction speed, high industrialization degree and the like, and can solve the problems of low building industrialization level, low house construction labor productivity and the like in China. The beam-column connecting node is the most important node in the assembled steel structure system, and the seismic performance of the beam-column connecting node directly determines the seismic performance of the assembled steel structure building.
In the prior art, the anti-seismic performance of the connection node is improved by adopting various modes, for example, the application number is: 201710753176.8, the authorization notice number is: chinese patent CN 107675801B discloses an assembled steel beam-column connection node and a connection method thereof. The assembled steel structure beam-column connecting node is used for connecting a steel beam and a steel column, the end part of the steel beam is a connecting part, and a group of plate-shaped spring assemblies are respectively arranged in mounting grooves on two sides of the steel beam; concrete blocks formed by grouting are arranged in a grouting space between the grouting groove and the inner wall of the rectangular steel pipe; the transition connecting piece comprises a steel plate and a rectangular steel pipe, wherein the steel plate is fixed on the steel beam through a high-strength bolt, an inserting part is formed in the rectangular steel pipe, and the connecting part is inserted into the inserting part to form partial superposition; and anchor pulling holes are formed in the plate-shaped spring assembly, the partition plate and the steel column, and the two ends of the steel cable are fixed on the steel column and the steel beam after penetrating through the anchor pulling holes. Under the non-earthquake state, the node is in rigid connection, and under the earthquake state, movable flexible connection is formed, so that the problem of brittle fracture caused by the rigid node can be avoided.
In the prior art, the plate-shaped spring assembly and the steel cable are additionally arranged between the steel column and the steel beam so as to improve the seismic performance of the node, but the plate-shaped spring assembly has limited seismic energy consumed in strong earthquakes, and the steel cable is easy to pull out of the node in the damage of transverse waves of the earthquake, so that the improvement of the seismic performance of the node by the spring and the steel cable in the technical scheme is also very limited.
Disclosure of Invention
According to at least one defect in the prior art, the invention provides a steel structure connecting node, which aims to solve the problem that the existing steel structure connecting node is poor in shock resistance.
The steel structure connecting node adopts the following technical scheme:
the steel column is vertically arranged, the steel beam is horizontally arranged, a node base is fixedly arranged on the left side of the steel column, a node top cover is fixedly arranged on the left side of the node base, and the left end of the steel beam is inserted into the right end of the node top cover and is fixedly connected with the node top cover through a vertically arranged shear bolt;
a vertically extending piston shaft is fixedly arranged in the node base, two damping cylinders are arranged on the piston shaft at intervals, damping liquid is filled in the damping cylinders, the damping cylinders are movably hinged with the steel beam through connecting arms, so that the steel beam shakes left and right after the shear bolts are sheared, and the connecting arms drive the damping cylinders to move up and down;
disc springs are arranged between two adjacent damping cylinders and between the damping cylinders and the node base, and the disc springs are compressed or stretched in the up-and-down movement process of the damping cylinders so as to convert seismic energy into elastic potential energy of the disc springs;
a piston part is arranged in the damping cylinder, the piston part comprises a groove plate and a plurality of damping fins, the groove plate is fixedly connected with the piston shaft, and the plurality of damping fins are uniformly distributed along the circumferential direction of the groove plate; the groove plate is provided with an inner ring body, an outer ring body and a connecting strip located between the inner ring body and the outer ring body, the upper surface of the outer ring body is provided with a sliding groove, the lower surface of each damping sheet is provided with a first sliding key, each damping sheet is slidably mounted inside the sliding groove through the first sliding key, each damping sheet seals the space between the inner ring body and the outer ring body, and a gap is formed between every two adjacent damping sheets to form a damping hole.
Optionally, the piston member further comprises a curtain plate positioned above the channel plate and rotatably mounted to the channel plate, the damper blade being positioned between the channel plate and the curtain plate;
the curtain plate comprises an inner ring body, an outer ring body and spoke plates, the spoke plates are uniformly distributed between the inner ring body and the outer ring body along the circumferential direction of the curtain plate, the number of the spoke plates is the same as that of the damping pieces, the upper surface of each spoke plate is provided with a long circular hole which is communicated up and down, the upper surface of each damping piece is provided with a second sliding key, and the second sliding keys are slidably arranged in the long circular holes;
the damping cylinder is provided with a first inner rifling and a second inner rifling, the first inner rifling and the second inner rifling are symmetrically arranged relative to the upper central plane and the lower central plane of the damping cylinder, the curtain plate is arranged at the joint of the first inner rifling and the second inner rifling, and the curtain plate is driven to rotate by the first inner rifling or the second inner rifling when the damping cylinder moves up and down, so that the damping plate is driven to slide in the sliding groove while rotating, and the damping plate is opened or closed to change the size of the damping hole.
Optionally, the piston member further comprises a guard plate;
the outside circumference edge of outer circle body has the bellied ring of downward protrusion, and outer circle body is in the inboard of ring, and the backplate is located the below of outer circle body, and backplate and ring fixed connection to clamp the recess board between curtain board and backplate.
Optionally, the damping sheet has an upper surface, a lower surface, and a peripheral wall surface connecting the upper surface and the lower surface, the peripheral wall surface includes an arc surface, two first vertical planes, two second vertical planes, and a third vertical plane, the arc surface is disposed coaxially with the inner ring body, the third vertical plane is disposed radially outside the arc surface, and the third vertical plane is perpendicular to the radial direction of the inner ring body; when the damping pieces are closed, the arc surfaces of two adjacent damping pieces are connected with each other to form a circle, and meanwhile, the first vertical planes of the two adjacent damping pieces are attached to each other, so that the second vertical planes of the two adjacent damping pieces are intersected to form an avoidance notch;
the second sliding key is positioned on the upper surface of the damping fin and is positioned on the symmetrical plane of the two second vertical planes; the first sliding key is positioned on the lower surface of the damping sheet and positioned at the included angle between the second vertical plane and the third vertical plane.
Optionally, the inner wall of the inner ring body is uniformly provided with stop keys matched with the piston shaft along the circumferential direction of the inner ring body, and the groove plate is fixedly connected with the piston shaft through the stop keys; sliding blocks are uniformly distributed on the outer wall of the outer ring body along the circumferential direction of the outer ring body and are positioned at the connecting part of the first inner rifling and the second inner rifling so as to drive the curtain plate to rotate when the damping cylinder moves up and down.
Optionally, the two ends of each piston shaft are provided with square shaft heads, the right sides of the square shaft heads are provided with positioning blocks, the node top covers extrude the positioning blocks, and then the positioning blocks extrude the square shaft heads so as to fix the square shaft heads inside the node base.
Optionally, a sealing ring is arranged on the inner circumferential surface of the upper end part and the lower end part of each damping cylinder.
Optionally, the node base and the node top cover are fixedly connected with the steel column through a first connecting bolt.
Optionally, the left end of girder steel is equipped with the fixed plate, and the fixed plate passes through second connecting bolt and girder steel fixed connection.
Optionally, the right side of each damping cylinder is provided with a first connecting seat, the left end face of the fixing plate is provided with a second connecting seat corresponding to the first connecting seat, and two ends of each connecting arm are movably hinged to the corresponding first connecting seat and the corresponding second connecting seat through hinge shafts respectively.
The invention has the beneficial effects that: according to the steel structure connecting node, the steel beam is connected with the steel column through the node base and the node top cover, the shear bolts are arranged between the steel beam and the node top cover, the damping cylinders connected with the steel beam are arranged inside the node base, the disc springs are arranged between the adjacent damping cylinders and between the damping cylinders and the node base, and the shear bolts, the damping cylinders and the disc springs are matched with each other to form triple energy consumption measures. The damping cylinder is movably hinged with the steel beam through the connecting arm, and the connecting arm is matched with the shear bolt, so that the brittle collapse of a building can not be caused after the shear bolt is sheared in a strong earthquake, and the safety of the building is further ensured.
The piston part comprises a groove plate, a curtain plate and a damping sheet positioned between the groove plate and the curtain plate, the damping cylinder moves up and down to drive the curtain plate to rotate and drive the damping sheet to slide along the groove plate, and then the damping sheet is opened or closed, so that the size of a damping hole is changed, and the energy in the earthquake is consumed to the maximum extent according to the intensity of the earthquake.
The steel structure connection node is convenient to install and can be replaced and repaired after being damaged in small and medium earthquakes.
Drawings
In order to illustrate more clearly the embodiments of the invention or the solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained by those skilled in the art without inventive exercise from these drawings, it being understood that these drawings are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of a steel structure connection node according to the present invention;
FIG. 2 is a schematic structural view of the damping cylinder of the present invention mounted on a node base;
FIG. 3 is a schematic structural view of a node cover according to the present invention;
FIG. 4 is a right side view of FIG. 3;
FIG. 5 is an enlarged view of a portion A of FIG. 1;
FIG. 6 is a schematic structural view of the piston damping plate of the present invention in a closed state;
FIG. 7 is a perspective cross-sectional view of FIG. 6;
FIG. 8 is a schematic structural view of the piston damping plate of the present invention in an open state;
FIG. 9 is a schematic view of the deployment of the damping cylinder of the present invention;
FIG. 10 is a schematic view of a groove plate according to the present invention;
FIG. 11 is a perspective cross-sectional structural view of FIG. 10;
FIG. 12 is a schematic view of the construction of a curtain panel of the present invention;
FIG. 13 is a perspective cross-sectional view of FIG. 12;
FIG. 14 is a front view of the damping plate of the present invention;
FIG. 15 is a top view of FIG. 14;
FIG. 16 is a perspective view of the damping plate of the present invention.
In the figure: 1. a steel column; 2. a steel beam; 3. a node base; 31. a base bolt hole; 32. a first connecting bolt; 33. positioning blocks; 34. a square shaft head; 35. a piston shaft; 36. a disc spring; 37. a damping cylinder; 371. a first internal rifling; 372. a second internal rifling; 38. a first connecting seat; 39. hinging a shaft; 310. a connecting arm; 311. a second connecting seat; 312. a shear bolt; 313. a fixing plate; 314. a seal ring; 315. a second connecting bolt; 4. a node top cover; 41. a top cover bolt hole; 42. an interface bolt hole; 43. a square interface; 44. a cover plate; 45. a limiting plate; 5. a piston member; 51. a groove plate; 511. a chute; 512. a connecting strip; 513. an inner ring body; 514. a stop key; 515. an outer ring body; 52. a curtain panel; 521. a spoke plate; 522. a long round hole; 523. an inner ring body; 524. screw holes; 525. a slider; 526. an outer ring body; 527. a loop; 53. a damping fin; 531. a first slide key; 532. a second slide key; 533. a circular arc surface; 534. a first vertical plane; 535. a second vertical plane; 536. a third vertical plane; 54. and (4) protecting the plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 16, the steel structure connection node of the present invention includes a vertically disposed steel column 1 and a horizontally disposed steel beam 2, wherein a node base 3 is fixedly disposed on a left side of the steel column 1, and a node top cover 4 is fixedly disposed on a left side of the node base 3. Node top cap 4 includes two apron 44 of vertical setting, and two apron 44 extend right and are equipped with two limiting plates 45, and the right-hand member that two limiting plates 45 slope set up and two limiting plates 45 is close to each other, and the right-hand member extension of two limiting plates 45 is equipped with square interface 43, and square interface 43 level sets up, and link up about the inner space of square interface 43. The left end cartridge of girder steel 2 is inside square interface 43 right-hand member, all has the interface bolt hole 42 of vertical setting on the upper panel of square interface 43 and the lower panel, is provided with shear bolt 312 in the interface bolt hole 42, and girder steel 2 passes through shear bolt 312 and square interface 43 fixed connection, and then through node base 3 and steel column 1 fixed connection.
The open mounting groove of right-hand member has been seted up at the middle part of node base 3, the mounting groove is inside to be fixed with two vertical piston shafts 35 that extend side by side along the fore-and-aft direction, equal interval is provided with two damping cylinders 37 about on every piston shaft 35, damping fluid is filled to damping cylinder 37's inside, the right side of every damping cylinder 37 passes through linking arm 310 swing joint with the left end of girder steel 2, linking arm 310 is located between two limiting plates 45, and corresponding linking arm 310 and limiting plate 45 parallel arrangement. When an earthquake occurs, the shear bolt 312 is firstly sheared by transverse earthquake waves, the steel beam 2 shakes left and right and moves left and right in the square interface 43, and then the damping cylinder 37 is driven to move up and down through the connecting arm 310 so as to consume energy in the earthquake.
Disc springs 36 are arranged between two adjacent damping cylinders 37 and between the damping cylinders 37 and the node base 3, the disc springs 36 can restore the damping cylinders 37 after the damping cylinders 37 deviate from the central position, and meanwhile, the disc springs 36 can be compressed or stretched by the up-and-down movement of the damping cylinders 37 to convert seismic energy into the elastic potential energy of the disc springs 36, so that the disc springs 36 can be matched with the damping cylinders 37 to further consume the seismic energy.
The damping cylinder 37 has a first inner rifling 371 and a second inner rifling 372, the first inner rifling 371 and the second inner rifling 372 are helical, and the first inner rifling 371 and the second inner rifling 372 are arranged symmetrically with respect to the upper and lower center planes of the damping cylinder 37.
A piston part 5 is arranged inside the damping cylinder 37, and the piston part 5 comprises a groove plate 51, a curtain plate 52 and a plurality of damping fins 53; the groove plate 51 is fixedly connected with the piston shaft 35, the curtain plate 52 is rotatably arranged above the groove plate 51, the curtain plate 52 is arranged at the joint of the first inner rifling 371 and the second inner rifling 372, the damping fins 53 are positioned between the groove plate 51 and the curtain plate 52, and the damping fins 53 are uniformly distributed along the circumferential direction of the groove plate 51.
The groove plate 51 comprises an inner ring body 513, an outer ring body 515 and connecting strips 512, the connecting strips 512 are uniformly distributed between the inner ring body 513 and the outer ring body 515 along the circumferential direction of the groove plate 51, the inner ring body 513 and the outer ring body 515 are integrally connected by the connecting strips 512, a sliding groove 511 is formed in the upper surface of the outer ring body 515, the sliding groove 511 is arranged to be of a polygonal structure according to the number of the damping fins 53, a first sliding key 531 is arranged on the lower surface of each damping fin 53, each damping fin 53 is slidably mounted inside the corresponding sliding groove 511 through the corresponding first sliding key 531, each damping fin 53 blocks a space between the inner ring body 513 and the outer ring body 515, and a gap is formed between every two adjacent damping fins 53 to.
The curtain plate 52 comprises an inner ring body 523, an outer ring body 526 and spoke plates 521, wherein the spoke plates 521 are uniformly distributed between the inner ring body 523 and the outer ring body 526 along the circumferential direction of the curtain plate 52, the spoke plates 521 integrally connect the inner ring body 523 and the outer ring body 526, the spoke plates 521 are rotatably and obliquely arranged relative to the outer wall of the inner ring body 523, namely, a connecting line between the outer ends of the spoke plates 521 and the center of the inner ring body 523 and the spoke plates 521 are intersected at the outer ends of the spoke plates 521, the number of the spoke plates 521 is the same as that of the damping sheets 53, the upper surface of each spoke plate 521 is provided with an elongated hole 522 which penetrates up and down, the upper surface of each damping sheet 53 is provided with a second sliding key 532, the second sliding keys 532 are slidably arranged in the elongated holes 522, and the damping sheets 53 are movably connected with the curtain plate 52 through the matching of the second sliding keys 532 and the elongated holes 522. When the damping cylinder 37 moves up and down, the curtain plate 52 is driven to rotate by the first inner rifling 371 or the second inner rifling 372, so that the curtain plate 52 rotates and simultaneously drives the damping fins 53 to slide along the sliding grooves 511, and further the damping fins 53 open or close to change the size of the damping holes, so as to obtain different damping forces.
As shown in fig. 15 and 16, the damper 53 has an upper surface, a lower surface, and a peripheral wall surface connecting the upper surface and the lower surface, the peripheral wall surface includes one arc surface 533, two first vertical planes 534, two second vertical planes 535, and one third vertical plane 536, the arc surface 533 is disposed coaxially with the inner ring 513, the third vertical plane 536 is disposed radially outside the arc surface 533, and the third vertical plane 536 is perpendicular to the radial direction of the inner ring 513; one ends of the two first vertical planes 534 close to the center of the inner ring 513 are respectively connected with two ends of the arc surface 533, the other ends of the two first vertical planes 534 are far away from each other and are respectively connected with two ends of the third vertical plane 536 through a second vertical plane 535, when the damping fins 53 are closed, the arc surfaces 533 of the two adjacent damping fins 53 are mutually connected to enclose a circle, and meanwhile, the first vertical planes 534 of the two adjacent damping fins 53 are mutually attached, so that the second vertical planes 535 of the two adjacent damping fins 53 are intersected to form an avoiding notch; so that the damping fins 53 are opened from each other while sliding in the sliding slots 511.
The second sliding key 532 is located on the upper surface of the damper 53, and the second sliding key 532 is located on the symmetrical plane of the two second vertical planes 535; the first sliding key 531 is located on the lower surface of the damper 53, and the first sliding key 531 is located at the corner between the second vertical plane 535 and the third vertical plane 536 so that the damper 53 has a sufficient sliding distance when sliding in the sliding slot 511.
When the earthquake amplitude is too large, the steel beam 2 moves rightwards, the two damping cylinders 37 on the same piston shaft 35 are driven to move oppositely, the damping cylinders 37 move oppositely and simultaneously drive the curtain plate 52 to rotate, so that the damping fins 53 are gradually closed, damping holes are gradually reduced in the closing process of the damping fins 53, the flow rate of damping liquid in the damping cylinders 37 is gradually reduced, the damping force of the damping cylinders 37 is gradually increased, the earthquake consumption capacity is enhanced, until the stroke of the damping cylinders 37 reaches the limit, the damping fins 53 are completely closed, the damping force received by the damping cylinders 37 is maximum, and the earthquake energy can be consumed to the maximum extent. After the stroke of the damping cylinder 37 reaches the limit, the damping cylinder is reset under the reset force of the disc spring 36 and gradually returns to the middle position, the damping sheet 53 is gradually opened under the drive of the curtain plate 52, the damping hole is gradually enlarged, and the damping force of the damping cylinder 37 is gradually reduced. When the steel beam 2 moves leftwards, the damping cylinder 37 on the same piston shaft 35 is driven to move in the opposite direction, at this time, the damping sheet 53 is driven by the curtain plate 52 to gradually close again, so that the damping force of the damping cylinder 37 is gradually increased, and the earthquake energy is consumed, so as to reciprocate. The damping cylinder 37 adaptively changes the size of the damping hole along with the intensity of the earthquake, namely, the more the damping cylinder 37 deviates from the central position, the larger the damping is received, the earthquake energy is consumed to the maximum extent, the safety of the connection node is ensured, and the earthquake-resistant performance of the building is further improved.
Stop keys 514 matched with the piston shaft 35 are uniformly distributed on the inner wall of the inner ring body 513 along the circumferential direction of the inner ring body 513, and the groove plate 51 is fixedly connected with the piston shaft 35 through the stop keys 514.
Sliding blocks 525 are uniformly distributed on the outer wall of the outer ring body 526 along the circumferential direction of the outer ring body 526, and the sliding blocks 525 are positioned at the joint of the first inner rifling 371 and the second inner rifling 372, so that the curtain plate 52 is driven to rotate when the damping cylinder 37 moves up and down.
Both ends of every piston shaft 35 all are provided with square spindle nose 34, have seted up corresponding spindle nose spacing groove on the last confining surface and the lower confining surface of the mounting groove of node base 3, and the right-hand member of spindle nose spacing groove is uncovered, and square spindle nose 34 is located spindle nose spacing inslot, and the right-hand member of square spindle nose 34 is equipped with locating piece 33, and apron 44 extrudees locating piece 33, and then makes locating piece 33 extrude square spindle nose 34 to fix square spindle nose 34 in spindle nose spacing inslot portion.
Each damping cylinder 37 is provided with a sealing ring 314, and the sealing ring 314 is located on the circumferential surface of the damping cylinder 37 matched with the piston shaft 35 to ensure that the damping cylinder 37 is reliably sealed in the operation process.
The node base 3 is provided with a base bolt hole 31, the cover plate 44 is provided with a top cover bolt hole 41 corresponding to the base bolt hole 31, the steel column 1 is provided with a through hole corresponding to the base bolt hole 31 and the top cover bolt hole 41, and the first connecting bolt 32 penetrates through the corresponding base bolt hole 31, the top cover bolt hole 41 and the through hole so as to fixedly connect the node base 3 and the node top cover 4 with the steel column 1. The left end of girder steel 2 is equipped with fixed plate 313, and fixed plate 313 passes through second connecting bolt 315 and girder steel 2 fixed connection. The connection node is convenient to assemble by adopting a bolt connection mode, and can be replaced and repaired after medium and small earthquakes.
The right side of each damping cylinder 37 is provided with a first connecting seat 38, the left end surface of the fixing plate 313 is provided with a second connecting seat 311 corresponding to the first connecting seat 38, and both ends of each connecting arm 310 are movably hinged with the corresponding first connecting seat 38 and the second connecting seat 311 through hinge shafts 39 respectively.
With the above embodiment, the use principle and the working process of the present invention are as follows:
in the normal state, the piston member 5 is located in the middle of the damping cylinder 37, the damping fin 53 is in the open state, i.e. the damping hole is largest, and the damping force generated by the damping cylinder 37 is smallest.
When an earthquake occurs, the steel beam 2 tends to shake left and right due to transverse earthquake waves, the shear force is formed on the shear bolt 312 by the transverse force generated by the left and right shaking tendency of the steel beam 2, the shear bolt 312 begins to deform gradually under the action of the shear force, the earthquake energy is consumed, when the shaking amplitude is increased until the shear bolt 312 is sheared, the steel beam 2 begins to shake left and right, and the connecting arm 310 drives the damping cylinder 37 to move up and down.
The piston member 5 in the damping cylinder 37 will start to work due to the up-and-down movement of the damping cylinder 37, wherein the groove plate 51 ensures the piston member 5 not to displace through the cooperation of the stop key 514 and the piston shaft 35, the curtain plate 52 starts to rotate through the cooperation of the sliding block 525 and the spiral inner bore line of the damping cylinder 37, and drives the damping fins 53 to slide along the groove plate 51, so as to open or close the adjacent damping fins 53, thereby changing the size of the damping hole and consuming the energy in the earthquake to the maximum extent. In the process of up-and-down movement of the damping cylinder 37, the disc spring 36 plays a role in resetting the damping cylinder 37 after the damping cylinder 37 deviates from the central position, and meanwhile, the up-and-down movement of the damping cylinder 37 compresses the disc spring 36, so that the disc spring 36 can cooperate with the damping cylinder 37 to consume seismic energy.
The shear bolt 312, the damping cylinder 37 and the disc spring 36 are mutually matched to form triple energy consumption measures, so that the joint connection strength is ensured, and the shock resistance of the joint is greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a steel construction connected node, includes the steel column of vertical setting and the girder steel of level setting, its characterized in that: a node base is fixedly arranged on the left side of the steel column, a node top cover is fixedly arranged on the left side of the node base, and the left end of the steel beam is inserted into the right end of the node top cover and is fixedly connected with the node top cover through a vertically arranged shear bolt;
a vertically extending piston shaft is fixedly arranged in the node base, two damping cylinders are arranged on the piston shaft at intervals, damping liquid is filled in the damping cylinders, the damping cylinders are movably hinged with the steel beam through connecting arms, so that the steel beam shakes left and right after the shear bolts are sheared, and the connecting arms drive the damping cylinders to move up and down;
disc springs are arranged between two adjacent damping cylinders and between the damping cylinders and the node base, and the disc springs are compressed or stretched in the up-and-down movement process of the damping cylinders so as to convert seismic energy into elastic potential energy of the disc springs;
a piston part is arranged in the damping cylinder, the piston part comprises a groove plate and a plurality of damping fins, the groove plate is fixedly connected with the piston shaft, and the plurality of damping fins are uniformly distributed along the circumferential direction of the groove plate; the groove plate is provided with an inner ring body, an outer ring body and a connecting strip located between the inner ring body and the outer ring body, the upper surface of the outer ring body is provided with a sliding groove, the lower surface of each damping sheet is provided with a first sliding key, each damping sheet is slidably mounted inside the sliding groove through the first sliding key, each damping sheet seals the space between the inner ring body and the outer ring body, and a gap is formed between every two adjacent damping sheets to form a damping hole.
2. The steel structure connection node of claim 1, wherein: the piston piece further comprises a curtain plate, the curtain plate is located above the groove plate and is rotatably mounted on the groove plate, and the damping sheet is located between the groove plate and the curtain plate;
the curtain plate comprises an inner ring body, an outer ring body and spoke plates, the spoke plates are uniformly distributed between the inner ring body and the outer ring body along the circumferential direction of the curtain plate, the number of the spoke plates is the same as that of the damping pieces, the upper surface of each spoke plate is provided with a long circular hole which is communicated up and down, the upper surface of each damping piece is provided with a second sliding key, and the second sliding keys are slidably arranged in the long circular holes;
the damping cylinder is provided with a first inner rifling and a second inner rifling, the first inner rifling and the second inner rifling are symmetrically arranged relative to the upper central plane and the lower central plane of the damping cylinder, the curtain plate is arranged at the joint of the first inner rifling and the second inner rifling, and the curtain plate is driven to rotate by the first inner rifling or the second inner rifling when the damping cylinder moves up and down, so that the damping plate is driven to slide in the sliding groove while rotating, and the damping plate is opened or closed to change the size of the damping hole.
3. A steel structural connection node according to claim 2, wherein: the piston member further includes a guard plate;
the outside circumference edge of outer circle body has the bellied ring of downward protrusion, and outer circle body is in the inboard of ring, and the backplate is located the below of outer circle body, and backplate and ring fixed connection to clamp the recess board between curtain board and backplate.
4. A steel structural connection node according to claim 2, wherein: the damping sheet is provided with an upper surface, a lower surface and a peripheral wall surface connecting the upper surface and the lower surface, the peripheral wall surface comprises an arc surface, two first vertical planes, two second vertical planes and a third vertical plane, the arc surface and the inner ring body are coaxially arranged, the third vertical plane is arranged on the radial outer side of the arc surface, and the third vertical plane is perpendicular to the radial direction of the inner ring body; when the damping pieces are closed, the arc surfaces of two adjacent damping pieces are connected with each other to form a circle, and meanwhile, the first vertical planes of the two adjacent damping pieces are attached to each other, so that the second vertical planes of the two adjacent damping pieces are intersected to form an avoidance notch;
the second sliding key is positioned on the upper surface of the damping fin and is positioned on the symmetrical plane of the two second vertical planes; the first sliding key is positioned on the lower surface of the damping sheet and positioned at the included angle between the second vertical plane and the third vertical plane.
5. A steel structural connection node according to claim 2, wherein: the inner wall of the inner ring body is uniformly provided with stop keys matched with the piston shaft along the circumferential direction of the inner ring body, and the groove plate is fixedly connected with the piston shaft through the stop keys; sliding blocks are uniformly distributed on the outer wall of the outer ring body along the circumferential direction of the outer ring body and are positioned at the connecting part of the first inner rifling and the second inner rifling so as to drive the curtain plate to rotate when the damping cylinder moves up and down.
6. The steel structure connection node of claim 1, wherein: the two ends of each piston shaft are provided with square shaft heads, the right sides of the square shaft heads are provided with positioning blocks, and the node top covers extrude the positioning blocks, so that the positioning blocks extrude the square shaft heads to fix the square shaft heads inside the node base.
7. The steel structure connection node of claim 1, wherein: and sealing rings are arranged on the inner peripheral surfaces of the upper end part and the lower end part of each damping cylinder.
8. The steel structure connection node of claim 1, wherein: the node base and the node top cover are fixedly connected with the steel column through first connecting bolts.
9. The steel structure connection node of claim 1, wherein: the left end of girder steel is equipped with the fixed plate, and the fixed plate passes through second connecting bolt and girder steel fixed connection.
10. The steel structure connection node of claim 1, wherein: the right side of every damping cylinder all is equipped with first connecting seat, and the left end face of fixed plate is equipped with the second connecting seat corresponding with first connecting seat, and the both ends of every linking arm are respectively through articulated shaft and corresponding first connecting seat and second connecting seat activity hinge joint.
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| CN116025070A (en) * | 2023-03-29 | 2023-04-28 | 北京清大原点建筑设计有限公司新乡分公司 | Adjustable assembled building connection node |
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