CN115387465A - Cold-formed thin-wall steel-wood combined energy dissipation node and installation method thereof - Google Patents
Cold-formed thin-wall steel-wood combined energy dissipation node and installation method thereof Download PDFInfo
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- CN115387465A CN115387465A CN202211081755.XA CN202211081755A CN115387465A CN 115387465 A CN115387465 A CN 115387465A CN 202211081755 A CN202211081755 A CN 202211081755A CN 115387465 A CN115387465 A CN 115387465A
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- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000009434 installation Methods 0.000 title claims abstract description 7
- 238000005265 energy consumption Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 109
- 239000010959 steel Substances 0.000 claims description 109
- 238000005452 bending Methods 0.000 claims description 36
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 239000002131 composite material Substances 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 9
- 241001330002 Bambuseae Species 0.000 claims description 9
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 9
- 239000011425 bamboo Substances 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 description 5
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
-
- 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
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
-
- 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
- E04B1/62—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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/292—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being wood and metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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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
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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
- E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
-
- 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
- E04H9/0237—Structural braces with damping devices
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Abstract
The invention discloses a cold-formed thin-wall steel-wood combined energy dissipation node and an installation method thereof. The invention has the advantages of stable node stress, good overall performance, good energy consumption capability, simple structure, prefabricated parts in factory and convenient field installation.
Description
Technical Field
The invention relates to a beam column node technology, in particular to a cold-formed thin-wall section steel-wood combined energy dissipation node and an installation method thereof.
Background
The cold-formed thin-walled steel structure has the characteristics of small thickness, light weight, high strength and good anti-seismic performance, the wood structure has good heat insulation performance and strength-weight ratio far higher than that of steel and concrete, the construction period is short, the cost is low, and the cold-formed thin-walled steel-wood combination can combine the advantageous characteristics of the steel and the concrete to ensure that the steel and the concrete work cooperatively. However, when extreme loads occur, the building structure may cause damage to the whole structure locally. The beam-column joint connection is used as a key part of a steel structure, and the beam and the column are connected into a whole, so that external loads such as gravity, wind load and the like can be effectively transmitted; under the action of a strong earthquake, the beam end and the node area generate plastic deformation to form a plastic hinge, so that the earthquake energy can be effectively absorbed and dissipated, the connection performance of the beam-column node can directly influence the overall behavior of the frame structure under the action of load, and the reasonable design becomes an important link of the structural design.
The node forms commonly seen in steel structure buildings in recent years are as follows: inner partition plate type, outer ring plate type, split bolt type, outer sleeve plate type and the like. Experiments and theoretical researches show that no matter the reinforced node or the weakened node is adopted, the improved nodes can achieve the purpose that the plastic hinge at the node moves outwards when strong shock occurs, and brittle failure caused by premature cracks of the node is avoided. The beam column node at the present stage has the following technical problems: the beam-column joint is difficult to construct, easy to crack and difficult to repair after buckling damage.
Disclosure of Invention
The invention aims to: in order to overcome the defects of the prior art, the invention aims to provide the cold-formed thin-wall section steel-wood combined energy dissipation node which is stable in node stress, good in overall performance, good in energy dissipation capacity, simple in structure, capable of being prefabricated in factories and convenient to install on site.
The technical scheme is as follows: the invention discloses a cold-formed thin-wall section steel-wood combined energy dissipation node which comprises an upper-layer column, a lower-layer column, a cross beam, a wood joint, a steel corner piece, an energy dissipation support and splicing pieces, wherein the upper part and the lower part of the wood joint are respectively embedded into the upper-layer column and the lower-layer column, the end part of the cross beam is embedded into one side wall in the middle of the wood joint, one corner edge of the steel corner piece is fixedly connected with the top of the cross beam, the other corner edge of the steel corner piece is fixedly connected with the upper-layer column and the wood joint, one corner edge of the energy dissipation support is fixedly connected with the bottom of the cross beam, the other corner edge of the energy dissipation support is fixedly connected with the lower-layer column and the wood joint, and the splicing pieces are symmetrically distributed on two sides of the connecting end of the cross beam and the wood joint and are connected with the cross beam, the wood joint and the energy dissipation support.
Preferably, the middle of the upper-layer column and the lower-layer column is a cold-bending thin-wall steel pipe, the periphery of the upper-layer column and the lower-layer column is concrete, the outer side of the concrete is coated with FRP composite materials, the upper portion and the lower portion of the wood joint are respectively embedded into the cold-bending thin-wall steel pipes of the upper-layer column and the lower-layer column, and the lower portion of the upper-layer column and the upper portion of the lower-layer column are respectively provided with reserved bolt holes for being connected with the wood joint.
Preferably, the cross beam is an I-shaped combined beam formed by a wood beam and a cold-bending thin-wall steel beam, the wood beam is a rectangular cross-section beam, the cold-bending thin-wall steel beam is an I-shaped beam formed by splicing two U-shaped cold-bending thin-wall steel beams, the wood beam is fixedly connected with the upper flange of the cold-bending thin-wall steel beam to form an upper flange of the cross beam, a reserved bolt hole is formed in the end part of the upper flange of the cross beam and used for being connected with a steel corner piece, and pre-holes are formed in the lower flange and the web plate of the cold-bending thin-wall steel beam and used for being connected with a splicing piece; the cold-formed thin-walled steel beam is slightly longer than the wood beam, and the excessive part is embedded into the wood joint.
Preferably, the upper part and the lower part of the wood joint are respectively provided with a pre-opening hole which is respectively used for being connected with the upper-layer column and the lower-layer column, the middle part of the wood joint is provided with a pre-opening groove and a middle pre-opening hole, the pre-opening groove is used for being embedded into the end part of the cold-bending thin-wall steel beam, and the middle pre-opening hole is used for being connected with the splicing piece.
Preferably, the steel corner piece includes diaphragm, riser and connects the triangle rib between diaphragm and riser, and diaphragm and riser all are equipped with the preformed hole, are connected with the lateral wall of crossbeam top and upper prop respectively.
Preferably, the energy dissipation support comprises two force rods, an arch rod, two energy dissipation rods and two lug plates, one end parts of the two force rods and one end part of the energy dissipation rod are fixedly connected through the lug plates, the other end parts of the two force rods are respectively connected with the two ends of the arch rod through the lug plates, the other end parts of the energy dissipation rods are connected with the arch rod, and the energy dissipation rods are located between the two force rods; one of the two force rods is fixedly connected with the bottom of the cross beam and the splicing piece through the ear plates at the two ends of the two force rods, and the other two force rod is fixedly connected with the lower-layer column and the wood joint through the ear plates at the end part of the two force rods.
Preferably, the arch-shaped rod adopts a combined structure of a bamboo board and a steel board, and the periphery of the bamboo board is provided with a layer of steel board for protection; the lug plates are provided with reserved bolt holes and are used for being connected with the bottom of the cross beam, the splicing pieces, the lower-layer columns and the wood joints;
preferably, the energy consumption rod is connected with the arch rod through a hinge, and comprises a belleville spring, a tension and compression stop block, a hydraulic rod, a guide cylinder, a connecting rod and a damper, wherein one end of the belleville spring is sequentially connected with the tension and compression stop block, the damper and the connecting rod, and the other end of the belleville spring is sequentially connected with the tension and compression stop block, the hydraulic rod and the connecting rod; the butterfly spring, the pulling and pressing stop block, the hydraulic rod and the damper are all located in the guide cylinder, and the connecting rods at the two ends and the connecting ends of the hydraulic rod and the damper are located in the guide cylinder.
Preferably, the damper comprises a connecting plate, a first spring, a second spring, a first piston, a second piston, steel plates, a first friction plate, a second friction plate, friction rings, a piston rod, U-shaped mild steel, a stop block and a sleeve, wherein the connecting plate and the stop block are respectively fixed at the top end and the bottom end inside the sleeve; one end of the piston rod is arranged between the two steel plates, the other end of the piston rod extends out of the sleeve, and a friction ring is arranged on the contact surface of the piston rod and the two steel plates.
The invention discloses a method for installing cold-formed thin-wall section steel-wood combined energy dissipation nodes, which comprises the following steps of:
s1, respectively embedding the upper part and the lower part of a wood joint into the lower part of an upper-layer column and the upper part of a lower-layer column, and fixedly connecting the lower-layer column and the wood joint through split bolts;
s2, embedding the end part of the beam into a pre-groove in the middle of the wood joint;
s3, clamping the steel corner piece into the corner point where the upper-layer column and the cross beam are connected, fixedly connecting one corner edge of the steel corner piece with the upper-layer column and the wood joint through a split bolt, and fixedly connecting the other corner edge with the top of the cross beam through a bolt;
s4, symmetrically distributing the two splicing pieces on two sides of the connecting end of the beam and the wood joint; the splicing piece is fixedly connected with the wood joint and the beam web plate through bolts;
s5, clamping the energy dissipation support into the corner point where the lower-layer column and the cross beam are connected, fixedly connecting one corner edge of the energy dissipation support with the lower-layer column and the wood joint through bolts, and connecting the other corner edge with the bottom of the cross beam and the splicing piece through bolts.
Has the advantages that: compared with the prior art, the invention has the remarkable technical effects that: the node stress can be stable through the reinforcement of the steel angle piece, the splicing piece and the energy dissipation support arranged between the beam columns, all the components are tightly connected and are buckled with each other in a ring mode, the overall performance is good, the energy dissipation capacity is good due to the design and the matching of the energy dissipation rod and the arch-shaped rod in the energy dissipation support, the structure is simple, the problem that the beam hinges are damaged easily due to the fact that the traditional cold-bending thin-wall steel beam column connection node is used is solved, all the components can be prefabricated in a factory, and the site installation is convenient.
Drawings
FIG. 1 is a schematic structural view of a cold-formed thin-walled steel-wood composite energy-consuming node according to the present invention;
FIG. 2 is a schematic view of an upper column structure of the cold-formed thin-walled steel-wood combined energy dissipation node of the present invention;
FIG. 3 is a schematic view of a lower-layer column structure of the cold-formed thin-walled steel-wood combined energy dissipation node of the present invention;
FIG. 4 is a schematic diagram of a beam structure of a cold-formed thin-walled steel-wood combined energy dissipation node according to the present invention;
FIG. 5 is a cross-beam view of a cold-formed thin-walled steel-wood composite energy dissipating node of the present invention, wherein (a) is a side view and (b) is a front view;
FIG. 6 is a schematic view of a wood joint structure of a cold-formed thin-walled steel-wood combined energy-dissipating node according to the present invention;
FIG. 7 is an elevation view of a wood joint of the cold-formed thin-walled steel-wood composite energy dissipating node of the present invention;
FIG. 8 is a schematic structural view of a steel corner member of the cold-formed thin-walled steel-wood combined energy dissipation node of the present invention;
FIG. 9 is a schematic view of an energy dissipation brace structure of a cold-formed thin-walled steel-wood combined energy dissipation node according to the present invention;
FIG. 10 is a front view of the arch bar of the cold-formed thin-walled steel-wood composite energy dissipating node of the present invention before bending;
FIG. 11 is a schematic cross-sectional view of energy dissipating bars of the cold-formed thin-walled steel-wood composite energy dissipating node of the present invention;
FIG. 12 is a schematic view of the connection of the internal ear seats of the energy dissipation rods of the cold-formed thin-walled steel-wood combined energy dissipation node according to the present invention;
FIG. 13 is a schematic cross-sectional view of a damper of a cold-formed thin-walled steel-wood composite energy dissipating node according to the present invention;
FIG. 14 is a schematic structural diagram of a splicing member of the cold-formed thin-walled steel-wood combined energy dissipation node of the present invention.
In the figure: an upper-layer column 1, a cold-bending thin-wall steel pipe 1-1, 1-2 parts of concrete, 1-3 parts of FRP (fiber reinforced Plastic) composite material, 1-4 parts of first reserved bolt holes, 2-1 parts of lower-layer columns, 2-1 parts of second reserved bolt holes, 2-2 parts of third reserved bolt holes, 3-1 parts of cross beams, 3-1 parts of wood beams, 3-1 parts of fourth reserved bolt holes, 3-2 parts of cold-bending thin-walled steel beams, 3-2 parts of self-tapping screws, 3-2 parts of lower flange pre-opening holes, 3-2 parts of web pre-opening holes, 3-3 parts of structural gluing surfaces, 4-1 parts of wood joints, 4-1 parts of upper pre-opening holes, 4-2 parts of pre-grooves, 4-3 parts of middle pre-opening holes, 4-4 parts of lower pre-opening holes, 4-5 parts of fifth reserved bolt holes, 5 parts of steel corners, 5-1 parts of transverse plates, 5-1 parts of transverse plate pre-opening holes, 5-1a parts of vertical plates, 5-2 parts of vertical plates the device comprises a vertical plate pre-opening hole 5-2a, a triangular rib 5-3, an energy dissipation support 6, a secondary force rod 6-1, an arch rod 6-2, a bamboo plate 6-2-1, a steel plate 6-2, an energy dissipation rod 6-3, a belleville spring 6-3a, a spring washer 6-3b, a tension and compression stop 6-3c, a hydraulic rod 6-3d, a guide cylinder 6-3e, a connecting rod 6-3f, an ear seat 6-3g, a damper 6-3h, a connecting plate 6-3h-a, a first spring 6-3h-b1, a second spring 6-3h-b2, a first piston 6-3h-c1, a second piston 6-3h-c2, a steel plate 6-3h-d, a first friction plate 6-3h-e1, a second friction plate 6-3h-e2, a first friction plate 6-3h-e2 and a second friction plate, 6-3h-f of a friction ring, 6-3h-g of a piston rod, 6-3h-h of U-shaped mild steel, 6-3h-i of a stop block, 6-3h-j of a sleeve, 6-3h-k of an ear seat, 6-4 of an ear plate, 6-4a of a sixth reserved bolt hole, a splicing piece 7, 7-1 of an upper reserved bolt hole, 7-2 of a middle reserved bolt hole, 7-3 of a left reserved bolt hole, 7-4 of a lower reserved bolt hole, 8 of a bolt and 9 of a split bolt.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the cold-formed thin-wall section steel-wood combined energy dissipation node comprises an upper-layer column 1, a lower-layer column 2, a cross beam 3, a wood joint 4, a steel corner piece 5, an energy dissipation support 6 and splicing pieces 7, wherein the upper part and the lower part of the wood joint 4 are respectively connected with the upper-layer column 1 and the lower-layer column 2, the end part of the cross beam 3 is embedded into the wood joint 4, the steel corner piece 5 is connected with the top part of the cross beam 3 through a bolt 8 and is connected with the upper-layer column 1 through a split bolt 9, the energy dissipation support 6 is connected with the bottom part of the cross beam 3 and the lower-layer column 2, and the splicing pieces 7 are symmetrically distributed on two sides of the cross beam 3 and are connected with the cross beam 3 and the wood joint 4 through bolts 8.
As shown in fig. 1-3 and fig. 6-7, a cold-formed thin-walled steel tube 1-1 is arranged between an upper-layer column 1 and a lower-layer column 2, concrete 1-2 is arranged on the periphery, an frp composite material 1-3 is coated on the outer side of the concrete 1-2, first reserved bolt holes 1-4 and second reserved bolt holes 2-1 are respectively arranged at the joints of the upper-layer column 1 and the lower-layer column 2 and a wood joint 4, the first reserved bolt holes 1-4 of the upper-layer column 1 correspond to pre-opened holes 4-1 at the upper part of the wood joint 4 so as to be connected with the pre-opened holes 4-1 at the lower part of the wood joint 4 through split bolts 9, and the second reserved bolt holes 2-1 of the lower-layer column 2 correspond to pre-opened holes 4-4 at the lower part of the wood joint 4 so as to be connected with the pre-opened holes 4 through the split bolts 9; and a third reserved bolt hole 2-2 is formed in the joint of the lower part of the lower-layer column 2 and the energy-consuming support 6.
As shown in fig. 4-5 and fig. 8-10, the cross beam 3 is a composite beam composed of a wood beam 3-1 and a cold-bending thin-wall steel beam 3-2, the wood beam 3-1 is a rectangular section beam, the cold-bending thin-wall steel beam 3-2 is formed by splicing two U-shaped cold-bending thin-wall steel beams through self-tapping screws 3-2a, a structural adhesive surface 3-3 is arranged between the wood beam 3-1 and the cold-bending thin-wall steel beam 3-2, the end part of the cross beam 3 is provided with reserved bolt holes (namely the wood beam 3-1 and the fourth reserved bolt hole 3-1a of the upper flange of the cold-bending thin-wall steel beam 3-2), the fourth reserved bolt hole 3-1a of the upper flange of the wood beam 3-1 and the cold-formed thin-wall steel beam 3-2 corresponds to the transverse plate reserved hole 5-1a of the steel corner piece 5 so that the steel corner piece 5 is connected with the top of the cross beam 3 through the bolt 8, the lower flange reserved hole 3-2b and the web plate reserved hole 3-2c of the cold-formed thin-wall steel beam 3-2 correspond to the lower reserved bolt hole 7-4 and the middle reserved bolt hole 7-2 of the splicing piece 7 respectively so that the cross beam 3 is connected with the splicing piece 7 through the bolt 8, the cold-formed thin-wall steel beam 3-2 is slightly longer than the wood beam 3-1, the extra part is embedded into the pre-formed groove 4-2 of the wood joint 4, and the shape of the pre-formed groove 4-2 is the same as the shape of the cross section of the cold-formed thin-wall steel beam 3-2.
As shown in fig. 6 and 7, the upper pre-opening hole 4-1 of the wood joint corresponds to a first reserved bolt hole 1-4 of the upper-layer column 1, the lower pre-opening hole 4-4 of the wood joint corresponds to a second reserved bolt hole 2-1 of the lower-layer column 2, the middle pre-opening hole 4-3 of the wood joint corresponds to a left reserved bolt hole 7-3 of the splicing piece 7, a fifth reserved bolt hole 4-5 is arranged at the joint of the lower part of the wood joint 4 and the energy dissipation support 6, a groove 4-2 is pre-opened at the intersection position of the wood joint 4 and the cold-bending thin-wall steel beam 3-2, and the size of a hidden groove (the pre-opened groove 4-2) is slightly larger than the thickness of the cold-bending thin-wall steel beam 3-2, so that the cold-bending thin-wall steel beam 3-2 can be conveniently embedded into the wood joint 4.
As shown in figure 8, the steel corner piece 5 comprises a transverse plate 5-1, a vertical plate 5-2 and a triangular rib 5-3 which are connected by welding, the transverse plate 5-1 and the vertical plate 5-2 are both provided with reserved holes, the transverse plate reserved hole 5-1a corresponds to a fourth reserved bolt hole 3-1a of the upper flange of a wood beam 3-1 and a cold-bending thin-wall steel beam 3-2 and is connected by a bolt, the vertical plate reserved hole 5-2a corresponds to a first reserved bolt hole 1-4 of an upper-layer column 1 and is connected by a split bolt 9,
as shown in fig. 9, the energy-consuming brace 6 comprises a two-force rod 6-1, an arch-shaped rod 6-2, an energy-consuming rod 6-3 and an ear plate 6-4, the arch-shaped rod 6-2 adopts a bamboo plate and steel plate combined structure, the two-force rod 6-1 is connected with the lower-layer column 2 and the cold-bending thin-wall steel beam 3-2 through the ear plate 6-4 and a bolt, the ear plate 6-4 is provided with a sixth reserved bolt hole 6-4a, the sixth reserved bolt holes 6-4a of the two upper ear plates 6-4 correspond to the lower reserved bolt holes 7-4 of the splicing piece 7 and the lower flange pre-opening 3-2b of the cold-bending thin-wall steel beam 3-2, so that the ear plates 6-4 are connected with the beam 3 and the splicing piece 7; a sixth reserved bolt hole 6-4a of one lug plate 6-4 at the lower part corresponds to the third reserved bolt hole 2-2 of the lower-layer column 2, so that the lug plate 6-4 is connected with the lower-layer column and the wood joint; one end of each of two-force rods 6-1 is in butt joint through an ear plate 6-4 to form two corner edges of an energy dissipation support 6, the other end of each of the two-force rods 6-1 is connected with two ends of an arch-shaped rod 6-2 through the ear plate 6-4, one end of each of the energy dissipation rods 6-3 is connected with a corner point of the butt joint of the two-force rods 6-1, the other end of each of the energy dissipation rods 6-3 is connected with the arch-shaped rod 6-2, the energy dissipation rods 6-3 are connected with the arch-shaped rods 6-2 through hinges, and each of the energy dissipation rods 6-3 is composed of a belleville spring 6-3a, a spring washer 6-3b, a tension and compression stop 6-3c, a hydraulic rod 6-3d, a guide cylinder 6-3e, a connecting rod 6-3f, an ear seat 6-3g and a damper 6-3 h.
As shown in figure 10, the arch bar 6-2 is formed by combining a bamboo board 6-2-1 and a steel board 6-2-2, the periphery of four side surfaces of the bamboo board 6-2-1 is provided with a layer of steel board 6-2-2 as protection, and the arch bar is bent along one long side of the bamboo board 6-2-1 to form an arch shape during manufacturing.
As shown in fig. 11 and 12, the energy consumption rod 6-3 is composed of a belleville spring 6-3a, a spring washer 6-3b, a tension and compression stop 6-3c, a hydraulic rod 6-3d, a guide cylinder 6-3e, a connecting rod 6-3f, an ear seat 6-3g and a damper 6-3h, one end of the belleville spring 6-3a is sequentially connected with the tension and compression stop 6-3c, the damper 6-3h and the connecting rod 6-3f, and the other end is sequentially connected with the tension and compression stop 6-3c, the hydraulic rod 6-3d and the connecting rod 6-3f; the belleville springs 6-3a, the tension and compression stop blocks 6-3c, the hydraulic rods 6-3d and the dampers 6-3h are all located in the guide cylinders 6-3e, and connecting rods 6-3f at two ends, the connecting ends of the hydraulic rods 6-3d and the dampers 6-3h are located in the guide cylinders 6-3 e.
Two ends of the belleville spring 6-3a are fixedly arranged on the tension and compression stop block through a spring washer 6-3 b. The connecting rod 6-3f, the tension and compression stop block 6-3c, the damper 6-3h and the hydraulic rod 6-3d are connected through an ear seat 6-3g and a bolt, the ear seat 6-3g is provided with a reserved bolt hole, and the ear seat is connected to the connecting rod 6-3f and the tension and compression stop block 6-3c through a bolt.
As shown in figure 13, the damper 6-3h consists of a connecting plate 6-3h-a, a first spring 6-3h-b1, a second spring 6-3h-b2, a first piston 6-3h-c1, a second piston 6-3h-c2, a steel plate 6-3h-d, a first friction plate 6-3h-e1, a second friction plate 6-3h-e2, a friction ring 6-3h-f, a piston rod 6-3h-g, U-shaped mild steel 6-3h-h, a stop block 6-3h-i, a sleeve 6-3h-j and an ear seat 6-3 h-k. The connecting plate 6-3h-a and the stop dog 6-3h-i are respectively fixed at the top end and the bottom end in the sleeve, the two steel plates 6-3h-d are arranged in the sleeve in parallel, the two ends of the steel plates are respectively fixedly connected with the connecting plate 6-3h-a and the stop dog 6-3h-i, the first piston 6-3h-c1 is sleeved on the two steel plates 6-3h-d and is positioned below the connecting plate 6-3h-a, the first piston 6-3h-c1 is connected with the connecting plate 6-3h-a through the first spring 6-3h-b1, a plurality of first springs 6-3h-b1 can be arranged, the lower end of the first piston 6-3h-c1 is sequentially provided with a first friction plate 6-3h-e1, a second piston 6-3h-c2, U-shaped mild steel 6-3h-h and a second friction plate 6-3h-e2, the number of the first friction plate 6-3h-e1, the number of the second piston 6-3h-c2, the number of the U-shaped mild steel 6-3h-h and the number of the second friction plate 6-3h-e2 are two, the two friction plates are symmetrically arranged between the two steel plates 6-3h-d and the inner wall of the sleeve 6-3h-j, and the second friction plate 6-3h-e2 and the stop block 6-3h-i are connected through a second spring 6-3h-b 2; one end of the piston rod 6-3h-g is arranged between the two steel plates 6-3h-d, the other end of the piston rod extends out of the sleeve 6-3h-j, a friction ring 6-3h-f is sleeved on the contact surface of the piston rod 6-3h-g and the two steel plates 6-3h-d, the friction ring 6-3h-f can also be connected to the piston rod 6-3h-g through a connecting piece, and the ear seat 6-3h-k is fixedly connected to the top of the sleeve 6-3 h-j.
The U-shaped mild steel 6-3h-h is connected with the piston 6-3h-c and the friction plate 6-3h-e through bolts, and the friction ring 6-3h-f with a proper inner diameter is selected to be sleeved on the piston rod 6-3 h-g.
As shown in fig. 14, the splicing members 7 are symmetrically distributed on two sides of the cross beam 3 and connected with the cross beam 3 and the wooden joint 4 through bolts 8, the upper reserved bolt holes 7-1 correspond to the pre-opened holes of the upper flange of the cold-bending thin-walled steel beam 3-2 through bolts, the lower reserved bolt holes 7-4 correspond to the pre-opened holes 3-2b of the lower flange of the cold-bending thin-walled steel beam 3-2 and the sixth reserved bolt holes 6-4a of the two ear plates 6-4 on the upper part of the energy dissipation brace 6, the left reserved bolt holes 7-3 correspond to the pre-opened holes 4-3 in the middle of the wooden joint, and the middle reserved bolt holes 7-2 correspond to the pre-opened holes 3-2c of the web plate of the cold-bending thin-walled steel beam 3-2, so that the splicing members 7 are connected with the cross beam 3, the wooden joint 4, the steel angle member 5 and the energy dissipation brace 6.
The cold-formed thin-walled steel-wood combined energy dissipation node is stable in stress, good in overall performance, good in energy dissipation capability and simple in structure, and each part can be prefabricated in a factory and is convenient to install on site.
The invention discloses a method for installing cold-formed thin-wall section steel-wood combined energy dissipation nodes, which comprises the following steps of:
the method comprises the following steps: respectively embedding the upper part and the lower part of a wood joint 4 into the lower part of an upper-layer column 1 and the upper part of a lower-layer column 2, and enabling a first reserved bolt hole 1-4 of the upper-layer column 1 to correspond to a pre-opened hole 4-1 in the upper part of the wood joint 4; the second reserved bolt hole 2-1 of the lower-layer column 2 corresponds to the lower pre-opened hole 4-4 of the wood joint 4, and the lower-layer column 2 and the wood joint 4 are fixedly connected through a split bolt 9;
step two: the cross beam 3 is connected with the wood joint 4, and the part of the cold-bending thin-wall steel beam 3-2 which is more than the wood beam 3-1 is embedded into a pre-groove 4-2 in the middle of the wood joint 4;
step three: clamping a steel corner piece 5 into a corner point where an upper-layer column 1 and a cross beam 3 are connected, wherein a pre-opened hole 5-2a on a vertical plate 5-2 of the steel corner piece 5 corresponds to a first reserved bolt hole 1-4 of the upper-layer column 1, the vertical plate 5-2 of the steel corner piece 5 is fixedly connected with the upper-layer column 1 and a wood joint 4 through a split bolt 9, and a pre-opened hole 5-1a on a transverse plate 5-1 of the steel corner piece 5 corresponds to a wood beam 3-1 and a third reserved bolt hole 3-1a of an upper flange of a cold-bending thin-wall steel beam 3-2;
step four: the two splicing pieces 7 are distributed on two sides of the connecting end of the cross beam 3 and the wood joint 4 in a weighing mode, the upper reserved bolt holes 7-1 of the splicing pieces 7 correspond to the third reserved bolt holes 3-1a of the upper flange of the wood beam 3-1 and the cold-bending thin-wall steel beam 3-2, the left reserved bolt holes 7-3 correspond to the middle pre-opened hole 4-3 of the wood joint, the middle reserved bolt holes 7-2 correspond to the pre-opened hole 3-2c of the web of the cold-bending thin-wall steel beam 3-2, the lower reserved bolt holes 7-4 correspond to the pre-opened hole 3-2b of the lower flange of the cold-bending thin-wall steel beam 3-2, then the upper portion of the splicing pieces 7 are fixedly connected with the upper flange of the cross beam 3 and the transverse plate 5-1 of the steel corner piece 5 through bolts 8, the middle of the splicing pieces 7 are fixedly connected with the web of the cold-bending thin-wall steel beam 3-2 through the bolts 8, and the left sides of the splicing pieces 7 are fixedly connected with the wood joint 4 through the bolts 8;
step five: the energy dissipation support 6 is clamped into the corner point where the lower-layer column 2 and the cross beam 3 are connected, the energy dissipation support 6 is located at the bottom of the cross beam and comprises a two-force rod 6-1, an arch-shaped rod 6-2, energy dissipation rods 6-3 and ear plates 6-4, the two-force rod 6-1 is connected with the lower-layer column 2 and the cold-bending thin-wall steel beam 3-2 through the ear plates 6-4 and bolts, the fourth reserved bolt holes 6-4a of the two upper ear plates 6-4 correspond to the lower flange pre-opening holes 3-2b of the cold-bending thin-wall steel beam 3-2 and the lower reserved bolt holes 7-4 of the splicing piece 7, and the energy dissipation support 6 is fixedly connected with the cold-bending thin-wall steel beam 3-2 and the splicing piece 7 through the bolts 8; the pre-opening hole of one ear plate 6-4 at the lower part corresponds to the pre-opening hole of the lower-layer column and the wood joint and is fixedly connected with the lower-layer column 2 and the wood joint 4 through split bolts 9.
Claims (10)
1. The utility model provides a thin-walled cold-formed steel-wood combination power consumption node, characterized in that, including upper strata post (1), lower floor's post (2), crossbeam (3), wooden joint (4), steel corner fitting (5), power consumption support (6) and splice (7), upper portion and lower part of wooden joint (4) imbed upper strata post (1) and lower floor's post (2) respectively, a lateral wall at crossbeam (3) tip embedding wooden joint (4) middle part, a corner limit and crossbeam (3) top fixed connection of steel corner fitting (5), another corner limit and upper strata post (1) and wooden joint (4) fixed connection, a corner limit and crossbeam (3) bottom fixed connection of power consumption support (6), another corner limit and lower floor's post (2) and wooden joint (4) fixed connection, splice (7) are the symmetrical both sides of connecting end at crossbeam (3) and wooden joint, and be connected with crossbeam (3), wooden joint (4) and power consumption support (6).
2. The cold-formed thin-walled steel-wood combined energy dissipation node as claimed in claim 1, wherein the middle of the upper-layer column (1) and the lower-layer column (2) are both cold-formed thin-walled steel pipes (1-1), the periphery of the upper-layer column and the lower-layer column is concrete (1-2), the outer side of the concrete (1-2) is coated with FRP composite materials (1-3), the upper portion and the lower portion of the wood joint (4) are respectively embedded into the cold-formed thin-walled steel pipes (1-1) of the upper-layer column (1) and the lower-layer column (2), and the lower portion of the upper-layer column (1) and the upper portion of the lower-layer column (2) are both provided with reserved bolt holes for connection with the wood joint (4).
3. The cold-formed thin-wall section steel-wood combined energy consumption node is characterized in that the cross beam (3) is an I-shaped combined beam formed by a wood beam (3-1) and a cold-formed thin-wall section steel beam (3-2), the wood beam (3-1) is a rectangular section beam, the cold-formed thin-wall section steel beam (3-2) is an I-shaped beam formed by splicing two U-shaped cold-formed thin-wall section steel beams, the wood beam (3-1) is fixedly connected with the upper flange of the cold-formed thin-wall section steel beam (3-2) to form the upper flange of the cross beam (3), the end part of the upper flange of the cross beam (3) is provided with a reserved bolt hole and is used for being connected with the steel corner piece (5), and the lower flange and the web plate of the cold-formed thin-wall section steel beam (3-2) are provided with pre-opened holes and are used for being connected with the energy consumption support (6) and the splicing piece (7); the cold-bending thin-wall steel beam (3-2) is slightly longer than the wood beam (3-1), and the extra part is embedded into the wood joint (4).
4. The cold-formed thin-walled steel-wood combined energy dissipation node as claimed in claim 1, wherein pre-open holes are formed in the upper portion and the lower portion of the wood joint (4) and are respectively used for being connected with the upper-layer column (1) and the lower-layer column (2), a pre-open groove (4-2) and a middle pre-open hole (4-3) are formed in the middle of the wood joint (4), the pre-open groove (4-2) is used for being embedded into the end portion of the cold-formed thin-walled steel beam (3-2), and the middle pre-open hole is used for being connected with the splicing piece (7).
5. The cold-formed thin-walled steel-wood combined energy dissipation node as recited in claim 1, wherein the steel corner fitting (5) comprises a transverse plate (5-1), a vertical plate (5-2) and a triangular rib (5-3) connected between the transverse plate (5-1) and the vertical plate (5-2), and the transverse plate (5-1) and the vertical plate (5-2) are provided with reserved holes respectively connected with the upper flange of the transverse beam (3) and the side wall of the upper column (1).
6. The cold-formed thin-walled steel-wood combined energy dissipation node as claimed in claim 1, wherein the energy dissipation brace (6) comprises two force rods (6-1), an arch rod (6-2), two energy dissipation rods (6-3) and two lug plates (6-4), one end parts of the two force rods (6-1) and one end part of the energy dissipation rod (6-3) are fixedly connected through the lug plates (6-4), the other end parts of the two force rods (6-1) are respectively connected with the two end parts of the arch rod (6-2) through the lug plates (6-4), the other end parts of the energy dissipation rods (6-3) are connected with the arch rod (6-2), and the energy dissipation rods (6-3) are located between the two force rods (6-1); one two-force rod (6-1) is fixedly connected with the lower flange of the beam (3) and the splicing piece (7) through the lug plates (6-4) at the two ends of the two-force rod, and the other two-force rod (6-1) is fixedly connected with the lower-layer column (2) and the wooden joint (4) through the lug plates (6-4) at the end parts of the two-force rod.
7. The cold-formed thin-walled steel-wood combined energy dissipation node as claimed in claim 6, wherein the arch bar (6-2) adopts a combined structure of bamboo plates and steel plates, and the periphery of the bamboo plates is protected by a layer of steel plates; the ear plates (6-4) are provided with reserved bolt holes (6-4 a) for being connected with the bottoms of the cross beams (3), the splicing pieces (7), the lower-layer columns (2) and the wood connectors (4).
8. The cold-formed thin-walled steel-wood combined energy dissipation node as claimed in claim 6, wherein the energy dissipation rods (6-3) and the arch-shaped rods (6-2) are connected through hinges, the energy dissipation rods (6-3) comprise belleville springs (6-3 a), tension and compression stoppers (6-3 c), hydraulic rods (6-3 d), guide cylinders (6-3 e), connecting rods (6-3 f) and dampers (6-3 h), one end of each belleville spring (6-3 a) is sequentially connected with the tension and compression stoppers (6-3 c), the dampers (6-3 h) and the connecting rods (6-3 f), and the other end of each belleville spring (6-3 a) is sequentially connected with the tension and compression stoppers (6-3 c), the hydraulic rods (6-3 d) and the connecting rods (6-3 f); the belleville springs (6-3 a), the tension and compression stop blocks (6-3 c), the hydraulic rods (6-3 d) and the dampers (6-3 h) are all located in the guide cylinders (6-3 e), and the connecting rods (6-3 f) at the two ends, the hydraulic rods (6-3 d) and the dampers (6-3 h) are located in the guide cylinders (6-3 e).
9. The cold-formed thin-walled steel-wood combined energy dissipation node as claimed in claim 6, wherein the damper (6-3 h) comprises a connecting plate (6-3 h-a), a first spring (6-3 h-b 1), a second spring (6-3 h-b 2), a first piston (6-3 h-c 1), a second piston (6-3 h-c 2), a steel plate (6-3 h-d), a first friction plate (6-3 h-e 1), a second friction plate (6-3 h-e 2), a friction ring (6-3 h-f), a piston rod (6-3 h-g), U-shaped soft steel (6-3 h-h), a stop block (6-3 h-i) and a sleeve (6-3 h-j), a connecting plate (6-3 h-a) and a stop block (6-3 h-i) are respectively fixed at the top end and the bottom end inside the sleeve, two steel plates (6-3 h-d) are arranged in the sleeve in parallel, two ends of the steel plates are respectively fixedly connected with the connecting plate (6-3 h-a) and the stop block (6-3 h-i), a first piston (6-3 h-c 1) is sleeved on the two steel plates (6-3 h-d) and is positioned below the connecting plate (6-3 h-a), and a first spring is arranged between the first piston (6-3 h-c 1) and the connecting plate (6-3 h-a) (6-3 h-b 1), the lower end of the first piston (6-3 h-c 1) is sequentially provided with a first friction plate (6-3 h-e 1), a second piston (6-3 h-c 2), U-shaped mild steel (6-3 h-h) and a second friction plate (6-3 h-e 2), the number of the first friction plate (6-3 h-e 1), the number of the second piston (6-3 h-c 2), the number of the U-shaped mild steel (6-3 h-h) and the number of the second friction plate (6-3 h-e 2) are two, the first friction plate (6-3 h-e 1), the second piston (6-3 h-c 2), the number of the U-shaped mild steel (6-3 h-h) and the number of the second friction plate (6-3 h-e 2) are symmetrically arranged between the two steel plates (6-3 h-d) and the inner wall of the sleeve (6-3 h-j), and the second friction plate (6-3 h-e 2) and the stop dog (6-3 h-i) are connected through a second spring (6-3 h-b 2); one end of the piston rod (6-3 h-g) is arranged between the two steel plates (6-3 h-d), the other end of the piston rod extends out of the sleeve (6-3 h-j), and a friction ring (6-3 h-f) is arranged on the contact surface of the piston rod (6-3 h-g) and the two steel plates (6-3 h-d).
10. The installation method of the cold-formed thin-wall section steel-wood combined energy dissipation node is characterized by comprising the following steps of:
s1, respectively embedding the upper part and the lower part of a wood joint (4) into the lower part of an upper-layer column (1) and the upper part of a lower-layer column (2), and fixedly connecting the lower-layer column (2) and the wood joint (4) through a split bolt (9);
s2, embedding the end part of the cross beam (3) into a pre-groove (4-2) in the middle of the wood joint (4);
s3, clamping a steel corner piece (5) into the corner point where the upper-layer column (1) and the cross beam (3) are connected, fixedly connecting one corner edge of the steel corner piece (5) with the upper-layer column (1) and the wood joint (4) through a split bolt (9), and fixedly connecting the other corner edge with the top of the cross beam (3) through a bolt (8);
s4, symmetrically distributing the two splicing pieces (7) on two sides of the connecting end of the cross beam (3) and the wood joint (4); the splicing piece (7) is fixedly connected with the wood joint (4) and the web plate of the cross beam (3) through a bolt (8);
s5, the energy dissipation support (6) is clamped into the corner point where the lower-layer column (2) and the cross beam are connected, one corner edge of the energy dissipation support (6) is fixedly connected with the lower-layer column (2) and the wood joint (4) through bolts, and the other corner edge is connected with the bottom of the cross beam (3) and the splicing piece (7) through bolts.
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| CN115387465B (en) | 2023-09-22 |
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