CN115324233B - Double-arc soft steel wall toe and swing energy dissipation CLT-rectangular steel sleeve combined shear wall - Google Patents

Double-arc soft steel wall toe and swing energy dissipation CLT-rectangular steel sleeve combined shear wall Download PDF

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Publication number
CN115324233B
CN115324233B CN202210874562.3A CN202210874562A CN115324233B CN 115324233 B CN115324233 B CN 115324233B CN 202210874562 A CN202210874562 A CN 202210874562A CN 115324233 B CN115324233 B CN 115324233B
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China
Prior art keywords
energy consumption
wall
arc
assembly
shear wall
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CN115324233A (en
Inventor
翁维素
潘本卿
赵明坤
乔春蕾
邵志新
刘晓东
杜建婷
郭隆乾
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Hebei University of Architecture
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Hebei University of Architecture
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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
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
    • E04B2/60—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members
    • 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
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
    • 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
    • E04H9/022—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising laminated structures of alternating elastomeric and rigid layers
    • 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
    • E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
    • 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

Abstract

The invention discloses a double-arc soft steel wall toe and swing energy consumption CLT-rectangular steel sleeve combined shear wall which comprises a shear wall and frame beams, wherein assembling parts are formed at two feet at the bottom of the shear wall, wall toe energy consumption components are arranged between the assembling parts and the frame beams, shear connectors for connecting the two components are arranged between the bottom of the shear wall and the frame beams, and the wall toe energy consumption components are three-level energy consumption components. The invention has simple structure, easy processing, factory production and field installation; the energy consumption and shock absorption mechanism is clear, the bending energy consumption and the pulling, shearing, pressing and shearing energy consumption independently work, and the bending energy consumption and the pulling, shearing, pressing and shearing energy consumption are matched with each other to form a complete energy consumption system; the energy consumption forms are various, and the friction energy consumption, the metal plastic deformation energy consumption, the elastic deformation energy consumption and the viscous damping energy consumption are orderly combined to form a complete energy consumption system; the damage of the structural main body is concentrated on the toe of the wall, so that the damage deformation of the structural main body is effectively avoided, only the energy-consuming components are required to be replaced after earthquake, the wall and the non-energy-consuming components are basically undamaged, and the repair cost is greatly reduced.

Description

Double-arc soft steel wall toe and swing energy dissipation CLT-rectangular steel sleeve combined shear wall
Technical Field
The invention belongs to the technical field of earthquake-resistant and shock-absorbing of civil engineering structures, and particularly relates to a double-arc-shaped mild steel wall toe and swing energy consumption CLT-rectangular steel sleeve combined shear wall.
Background
Most of traditional shear wall manufacturing materials adopt a concrete or steel plate and concrete combined form, and the traditional shear wall manufacturing materials are gradually eliminated by people due to heavy self weight, complicated construction process, serious pollution and other reasons. Wood is widely used abroad as a traditional building material, and through multi-layer solid wood sawn timber or composite board orthogonal assembly, an orthogonal laminated wood (CLT) formed by pressing a structural adhesive is widely applied to building structures in recent years, and research by a large number of students at home and abroad proves that the orthogonal laminated wood has excellent characteristics in bearing capacity requirements, dead weight, thermal efficiency, fireproof requirements, green environmental protection and the like compared with other types of wood composite boards, so that the application of the orthogonal laminated wood and the combination form of the orthogonal laminated wood and other materials in shear walls has great potential.
Shock hazard and experimental studies indicate that: the shear wall structure is damaged at the bottom of the structure with the least adverse stress, and the damage and repair difficulty is high, and the repair cost is high. The replaceable parts are arranged at the severely damaged parts such as the corners of the walls, and the parts are used for dissipating earthquake energy to protect the main body part of the structure, so that the main body part of the structure is replaced in time after earthquake, the structure function is recovered as soon as possible, and the repair difficulty and cost are reduced. The existing dampers are various in types, but have the problems of single energy consumption mechanism, insufficient energy consumption efficiency, high manufacturing cost, no change of damping force along with the increase of displacement and the like, so that the structural rigidity, the construction cost and the protection force of a structural main body part are affected.
Disclosure of Invention
The invention provides a double-arc soft steel wall toe and swing energy consumption CLT-rectangular steel sleeve combined shear wall for solving the problems existing in the prior art.
The technical scheme of the invention is as follows: the utility model provides a double arc mild steel wall toe and sways energy dissipation CLT-rectangle steel bushing composite shear wall, includes shear force wall, frame roof beam, shear force wall bottom both feet department forms assembly portion, be provided with wall toe power consumption subassembly between assembly portion and the frame roof beam, be provided with the shear force connecting piece of connecting the two between shear force wall bottom and the frame roof beam, wall toe power consumption subassembly is tertiary power consumption subassembly.
The shear force connecting piece includes the bottom plate, be provided with two risers on the bottom plate, riser enclose and close and form the mounting groove, the mounting groove cover is in the shear force wall lower part, the bottom plate of shear force connecting piece links to each other with the frame roof beam.
The wall toe energy dissipation assembly comprises a lower connecting assembly positioned at the lower part, and the lower connecting assembly is connected with the frame beam.
The lower part coupling assembling includes the rectangle connecting block, rectangle connecting block both sides outer wall department is provided with the wedge connecting block, the wedge connecting block links to each other with the arc steel sheet, the upper end and the middle part coupling assembling of arc steel sheet link to each other.
The top and the bottom of arc steel sheet form the engaging lug, be provided with oblong bolt through-hole in the engaging lug, be provided with the friction sleeve in the oblong bolt through-hole, be provided with the bolt that passes wedge connecting block and connect in the friction sleeve.
The inner wall of the oblong bolt through hole and the bolt rod are uniformly coated with friction paint, and friction among the bolt, the friction sleeve and the oblong bolt through hole is small in vibration energy consumption.
The top and bottom of the arc-shaped steel plate are thicker than the middle of the arc-shaped steel plate, and the deformation of the arc-shaped steel plate is medium-vibration energy consumption.
The middle connecting assembly comprises a second connecting plate, a bending energy consumption assembly is arranged at the upper end of the second connecting plate, an upper connecting assembly is arranged at the upper end of the bending energy consumption assembly, and the upper connecting assembly is connected with the shear wall.
And a middle energy consumption component is arranged between the arc-shaped steel plates, and energy consumption is performed under the action of large earthquake.
The middle energy consumption component comprises an oil cylinder, a telescopic piston rod is arranged in the oil cylinder, the piston rod penetrates through the arc-shaped steel plate, and viscous damping energy consumption and friction energy consumption are formed in the oil cylinder.
The beneficial effects of the invention are as follows:
according to the invention, the wall toe with staged energy consumption is arranged at the weak part of the bottom corner of the shear wall, and under the action of small shock or wind load, the friction sleeve, the high-strength bolt and the oblong bolt through hole are contacted with each other to generate friction energy consumption; under the middle vibration effect, along with the increase of the vertical displacement of the structure, the two arc-section steel plates enter a plastic deformation stage from an elastic stage to yield and consume energy under the action of tensile shearing or compressive shearing, the low yield point steel has lower yield strength, and the fatigue performance is good under the action of reciprocating load, so that the double arc-section steel plates enter a yield state before other components, and the energy consumption effect is obvious; under the action of large earthquake, along with the increase of the vertical displacement of the structure, the deformation of the double-arc-section energy-consumption steel plate outside or inside the transverse plane is further increased, and the arc-shaped stop blocks on two sides of the arc-section steel plate are touched, so that the vertical displacement is converted into the energy consumption of the middle energy-consumption support system along the transverse tension and compression.
The wall toe has simple structure, is easy to design and process, can be produced in factories and can be installed on site; the energy consumption and shock absorption mechanism is clear, the bending energy consumption and the pulling, shearing, pressing and shearing energy consumption independently work, and the bending energy consumption and the pulling, shearing, pressing and shearing energy consumption are matched with each other to form a complete energy consumption system; the energy consumption forms are various, and the friction energy consumption, the metal plastic deformation energy consumption, the elastic deformation energy consumption and the viscous damping energy consumption are orderly combined to form a complete energy consumption system; the damage of the structural main body is concentrated on the toe of the wall, so that the damage deformation of the structural main body is effectively avoided, only the energy-consuming components are required to be replaced after earthquake, the wall and the non-energy-consuming components are basically undamaged, and the repair cost is greatly reduced.
The novel wall body formed by combining the CLT-rectangular steel sleeves has larger lateral rigidity and bearing capacity, greatly reduces the dead weight, remarkably enhances the thermodynamic efficiency, and is environment-friendly and pollution-free.
According to the invention, under the action of external load, the bottom shearing connecting piece can enable the wall body to have larger shearing resistance and simultaneously rotate at different degrees on the surface, and the load acting on the wall body is transferred to bottom corners on two sides, so that a multi-stage energy consumption mechanism is realized, and the wall body swings but is not damaged.
Drawings
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic representation of a three-dimensional connection of the present invention;
FIG. 3 is a schematic diagram of the connection of the arc-shaped mild steel energy consuming assembly of the invention;
FIG. 4 is a schematic illustration of the connection of the lower connection assembly of the present invention;
FIG. 5 is a schematic diagram of the connection of the middle energy consuming components of the present invention;
FIG. 6 is a schematic diagram of the assembly of the middle energy consuming assembly of the present invention;
FIG. 7 is a schematic diagram of the connection of the bending energy consuming assembly of the present invention;
FIG. 8 is a schematic view of the connection of the upper connection assembly of the present invention;
FIG. 9 is a schematic illustration of a portion of the middle energy consuming assembly of the present invention shown in phantom;
FIG. 10 is a schematic illustration of another portion of the central energy consuming assembly of the present invention shown in phantom;
FIG. 11 is a schematic illustration of the attachment of a drum stop in the present invention;
FIG. 12 is a schematic view of the connection of shear walls according to the present invention;
FIG. 13 is a schematic layout of wood screw through holes in the present invention;
FIG. 14 is a schematic view of a high strength bolt of the present invention;
FIG. 15 is a schematic view of a shear connector according to the present invention;
wherein:
0 wall toe
1 arc mild steel power consumption assembly 2 lower part connecting assembly
3 middle connecting component 4 middle energy consumption component
5 bending energy consumption assembly 6 upper connecting assembly
7 shear wall 8 shear connector
9 frame beam
1.1 arc-shaped Steel plate 1.1.1 straight section
1.1.2 arc segment 1.1.3 connecting ear
1.1.4 oblong bolt through hole 1.1.5 Friction sleeve
1.1.6 Friction coating 1.1.7 square connecting Via
2.1 first connecting plate 2.2 rectangular connecting Block
2.3 wedge-shaped connecting block 2.4 bolt through hole A
2.5 high strength bolt A2.7 high strength bolt B
2.8 bolt through hole B
3.1 second connecting plate
4.11 Cylinder 4.12 piston rod
4.13 piston 4.14 inner Chamber
4.15 first Cavity 4.16 second Cavity
4.17 reflow Chamber 4.18 first reflow holes
4.19 second reflow hole 4.20 sealing rubber ring
4.21 buffer rubber block 4.22 oil filling hole
4.23 baffle 4.24 end seal plate A
4.25 end seal plates B4.26 viscous damping medium
4.27 connecting rod 4.28 arc baffle
4.29 separation barrel 4.31 Drum stop
4.32 friction plate 4.33 high-strength bolt D
4.34 connecting block 4.35 bending spring
4.36 positioning groove 4.37 limit stop A
4.38 Limit stop B4.39 smooth rubber ring
5.1 bending energy consumption plate
6.1 third connecting plate 6.2 end plates
6.3 bolt through hole C6.4 high strength bolt C
7.1 orthogonal laminated wood 7.2 steel sleeve
7.3 Wood screw 7.4 Wood screw through hole
7.5 Right-angle folded steel plate
8.1 floor 8.2 risers
8.3 long arc bolt through holes.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples:
as shown in fig. 1 to 15, a double-arc soft steel wall toe and swing energy consumption CLT-rectangular steel sleeve combined shear wall comprises a shear wall 7 and frame beams 9, wherein assembling parts are formed at two feet at the bottom of the shear wall 7, a wall toe energy consumption component is arranged between the assembling parts and the frame beams 9, a shear connector 8 for connecting the two components is arranged between the bottom of the shear wall 7 and the frame beams 9, and the wall toe energy consumption component is a three-stage energy consumption component.
The shear connector 8 comprises a bottom plate, two vertical plates are arranged on the bottom plate, the bottom plate and the vertical plates are enclosed to form an installation groove, the installation groove is sleeved on the lower portion of the shear wall 7, and the bottom plate of the shear connector 8 is connected with the frame beam 9.
The wall toe energy consuming assembly comprises a lower connection assembly 2 located at a lower part, the lower connection assembly 2 being connected to a frame beam 9.
The lower connecting assembly 2 comprises rectangular connecting blocks 2.2, wedge-shaped connecting blocks 2.3 are arranged at the outer walls of two sides of the rectangular connecting blocks 2.2, the wedge-shaped connecting blocks 2.3 are connected with the arc-shaped steel plates 1.1, and the upper ends of the arc-shaped steel plates 1.1 are connected with the middle connecting assembly 3.
The top and the bottom of arc steel sheet 1.1 form engaging lug 1.1.3, be provided with oblong bolt through-hole 1.1.4 in the engaging lug 1.1.3, be provided with friction sleeve 1.1.5 in the oblong bolt through-hole 1.1.4, be provided with in the friction sleeve 1.1.5 and pass wedge connecting block 2.3 and connect the bolt.
The inner wall of the oblong bolt through hole 1.1.4 and the bolt rod are uniformly coated with friction paint 1.1.6, and friction among the bolt, the friction sleeve 1.1.5 and the oblong bolt through hole 1.1.4 is small vibration energy consumption.
The top and bottom of the arc-shaped steel plate 1.1 are thicker than the middle of the arc-shaped steel plate 1.1, and the deformation of the arc-shaped steel plate 1.1 is medium vibration energy consumption.
The middle connecting component 3 comprises a second connecting plate 3.1, a bending energy consumption component 5 is arranged at the upper end of the second connecting plate 3.1, an upper connecting component 6 is arranged at the upper end of the bending energy consumption component 5, and the upper connecting component 6 is connected with a shear wall 7.
And a middle energy consumption component 4 is arranged between the arc-shaped steel plates 1.1, and energy consumption is carried out under the action of large earthquake.
The middle energy consumption component 4 comprises an oil cylinder 4.11, a telescopic piston rod 4.12 is arranged in the oil cylinder 4.11, the piston rod 4.12 penetrates through the arc-shaped steel plate 1.1, and viscous damping energy consumption and friction energy consumption are formed in the oil cylinder 4.11.
Specifically, at arc mild steel power consumption subassembly 1 part, arc mild steel power consumption subassembly 1 includes two relative arc steel sheet 1.1, arc steel sheet 1.1 upper end lower extreme forms straight section portion 1.1.1, forms arc section portion 1.1.2 between two straight section portion 1.1.1, straight section portion 1.1 processing forms engaging lug 1.1.3, engaging lug 1.1.3 is a plurality of equidistant equipartitions, form oblong bolt through-hole 1.1.4 in engaging lug 1.1.3, be provided with the friction sleeve 1.1.5 that carries out the friction power consumption in oblong bolt through-hole 1.1.4, oblong bolt through-hole 1.1.4 inner wall and bolt B2.8 evenly scribble friction coating 1.1.6, the mutual contact between high strength bolt B2.8, friction sleeve 1.1.5 and oblong bolt through-hole 1.1.4 and the energy consumption of producing frictional resistance.
Specifically, a square connecting through hole 1.1.7 is formed in the arc section 1.1.2, and the square connecting through hole 1.1.7 is used for installing the middle energy consumption component 4.
The middle energy consumption components 4 between the arc sections 1.1.2 are one group or two groups.
Specifically, the lower connecting component 2 comprises a first connecting plate 2.1, a rectangular connecting block 2.2 is arranged at the upper end of the first connecting plate 2.1, and the rectangular connecting block 2.2 is used as a connecting foundation of the arc section 1.1.2.
A plurality of equally spaced wedge-shaped connecting blocks 2.3 are arranged on two outer walls of the rectangular connecting blocks 2.2, and the number of the connecting lugs 1.1.3 is three correspondingly, the number of the wedge-shaped connecting blocks 2.3 is six, and the wedge-shaped connecting blocks 2.3 are two by two in a group.
The first connecting plate 2.1 is provided with a bolt through hole A2.4, and the high-strength bolt A2.5 is used for fixing the frame beam 9 through the bolt through hole A2.4.
The wedge-shaped connecting block 2.3 is internally provided with a bolt through hole B2.8, the bolt through hole B2.8 is internally provided with a high-strength bolt B2.7, and the high-strength bolt B2.7 is further fixed between the arc-shaped soft steel energy consumption component 1 and the lower connecting component 2 through a friction sleeve 1.1.5.
Specifically, the middle connecting component 3 is partially, the middle connecting component 3 includes the second connecting plate 3.1, the second connecting plate 3.1 is similar with the first connecting plate 2.1, and the middle connecting component 3 has both realized that the top of arc section 1.1.2 is fixed, and the middle connecting component 3 is fixed crooked power consumption subassembly 5 simultaneously.
Specifically, the bending energy dissipation assembly 5 comprises a bending energy dissipation plate 5.1, the bending energy dissipation plate 5.1 is a plurality of parallel bending energy dissipation plates, and an elliptical hole is formed in the middle of the bending energy dissipation plate 5.1.
Specifically, the upper connecting component 6 is partially connected, and the upper connecting component 6 comprises a third connecting plate 6.1, wherein the lower end of the third connecting plate 6.1 is connected with the upper end of the bending energy dissipation plate 5.1.
The upper end of the third connecting plate 6.1 is provided with two end plates 6.2, bolt through holes C6.3 are formed in the end plates 6.2, high-strength bolts C6.4 are arranged in the bolt through holes C6.3, and the high-strength bolts C6.4 are used for being fixed with the shear wall 7.
Specifically, the middle energy consumption component 4 comprises an oil cylinder 4.11, a sliding piston rod 4.12 is arranged in the oil cylinder 4.11, viscous damping energy consumption is formed at the tail part of the piston rod 4.12, and friction energy consumption is formed at the outer wall of the piston rod 4.12.
Specifically, the tail of the piston rod 4.12 is provided with a piston 4.13, and the piston 4.13 slides in the inner cavity 4.14, so as to drive the piston rod 4.12 to slide.
The inner cavity 4.14 is divided into a first cavity 4.15 and a second cavity 4.16 by the piston 4.13, the piston rod 4.12 is positioned in the first cavity 4.15, a backflow cavity 4.17 is formed between the outer wall of the inner cavity 4.14 and the inner wall of the oil cylinder 4.11, and a first backflow hole 4.18 positioned at the first cavity 4.15 and a second backflow hole 4.19 positioned at the second cavity 4.16 are formed in the inner cavity 4.14.
And a sealing rubber ring 4.20 for sealing and sliding is arranged on the outer wall of the piston 4.13.
A buffer rubber block 4.21 is arranged in the inner cavity 4.14, and the buffer rubber block 4.21 performs limit buffer on the piston 4.13.
An oil filling hole 4.22 is arranged in the oil cylinder 4.11, and the oil filling hole 4.22 is used for filling damping medium.
A baffle 4.23 is arranged in the oil cylinder 4.11, and the baffle 4.23 divides the oil cylinder 4.11 into two cavities, wherein one cavity is used for viscous damping energy consumption, and the other cavity is used for friction energy consumption.
The two ends of the oil cylinder 4.11 are respectively provided with an end sealing plate A4.24 and an end sealing plate B4.25, the end sealing plate A4.24 is used for the passage of the piston rod 4.12, a viscous damping medium 4.26 is contained in a cavity where the end sealing plate B4.25 is located, a connecting rod 4.27 is arranged at the outer wall of the end sealing plate B4.25, and the connecting rod 4.27 corresponds to the piston rod 4.12.
Two arc-shaped baffles 4.28 are arranged in the connecting rod 4.27 and the piston rod 4.12, and the arc section part 1.1.2 is clamped by the two arc-shaped baffles 4.28.
The inner cavity 4.14 is the inner cavity of the separating cylinder 4.29, and two ends of the separating cylinder 4.29 are connected with the end sealing plates B4.25 and the baffle plates 4.23.
The inner side wall of the oil cylinder 4.11 is provided with a drum-shaped stop block 4.31, and the drum-shaped stop block 4.31 is used for friction energy consumption.
The outer wall of the piston rod 4.12 is provided with a friction plate 4.32, the friction plate 4.32 is in an inclined spring-pressing shape, and the friction plate 4.32 is in contact with the drum-shaped stop block 4.31 to consume energy along with the movement of the piston rod 4.12 driven by the arc section 1.1.2.
The outer wall of the piston rod 4.12 is provided with a connecting block 4.34, a high-strength bolt D4.33 is arranged between the connecting blocks 4.34, a through hole is formed in the friction plate 4.32, and the high-strength bolt D4.33 penetrates through the through hole.
The back of the friction plate 4.32 is provided with a bending spring 4.35, and the other end of the bending spring 4.35 is connected with the outer wall of the piston rod 4.12.
Specifically, both sides of the drum stopper 4.31 are provided with friction plates 4.32 inclined toward them.
Specifically, a set of friction plates 4.32 are provided at each of the four side walls of the piston rod 4.12.
A detent 4.36 is formed at the outer wall of the piston rod 4.12 to facilitate the mounting of the bending spring 4.35.
The outer wall of the piston rod 4.12 is provided with a limit stop A4.37 and a limit stop B4.38, and the limit stop A4.37 and the limit stop B4.38 are used for limiting.
A smooth rubber ring 4.39 is arranged between the end sealing plate A4.24 and the piston rod 4.12.
Yet another embodiment
A double-arc soft steel wall toe and swing energy dissipation CLT-rectangular steel sleeve combined shear wall comprises a double-arc soft steel energy dissipation assembly 1, a lower connection assembly 2, a middle connection assembly 3, a middle energy dissipation support assembly 4, a bending energy dissipation assembly 5, an upper connection assembly 6, a shear wall 7, a shear connector 8 and a frame beam 9.
The double-arc soft steel energy consumption assembly 1, the middle energy consumption supporting assembly 4 and the bending energy consumption assembly 5 are connected and fixed through the middle connecting assembly 3 to form the energy consumption assembly together, and are connected and fixed with the frame beam 9 through the lower connecting assembly 2, are connected and fixed with the shear wall 7 through the upper connecting assembly 6, and meanwhile the shear wall 7 is connected and fixed through the shear connecting piece 8 and the frame beam 9.
The double-arc mild steel energy consumption assembly 1 comprises two identical and symmetrically distributed arc-shaped steel plates 1.1, wherein the arc-shaped steel plates 1.1 are formed by bending and processing a whole steel plate, and the material of the double-arc mild steel energy consumption assembly can be but is not limited to low yield point steels such as BLY100, BLY160, BLY225 and the like, and is divided into a straight section part 1.1.1 and an arc section part 1.1.2, and the joint of the straight section part 1.1.1 at two ends and the arc section part 1.1.2 at the middle part is subjected to smooth transition treatment; the thickness of each part of the straight section steel plate is consistent, a plurality of connecting lugs 1.1.3 are cut longitudinally, oblong bolt through holes 1.1.4 are formed in the connecting lugs, friction sleeves 1.1.5 which are matched with the oblong bolt through holes 1.1.4 are inserted into the holes, the aperture profile is larger than the diameter of the high-strength bolt B2.8, but not larger than the profile of the oblong bolt through holes 1.1.4, and the friction sleeves are made of friction metals such as red copper and the like; the inner wall of the oblong bolt through hole 1.1.4 and the screw of the high-strength bolt 22.8 are uniformly coated with friction paint 1.1.6, the high-strength bolt 22.8, the friction sleeve 1.1.5 and the oblong bolt through hole 1.1.4 are sequentially nested and combined from inside to outside, when the external structure bears small shock or wind load, the friction sleeve 1.1.5 is driven by the high-strength bolt 22.8, and in the oblong bolt through hole 1.1.4, the three are contacted with each other, so that friction energy consumption is generated, namely the energy consumption in the first stage.
The thickness of the two ends of the steel plate of the arc section 1.1.2 is maximum, the thicknesses of the two ends gradually decrease from the two ends to the middle, the thickness of the 1/2 position of the total height of the arc section 1.1.2 is minimum, the maximum thickness of the arc section 1.1.2 is not larger than the thickness of the steel plate of the straight section 1.1.1, and the minimum thickness is not smaller than 1/3 of the thickness of the straight section 1.1.1.
Square connecting through holes 1.1.7 are formed in the middle of the steel plate with the arc section 1.1.2; under the action of medium vibration, the two arc sections 1.1.2 steel plates enter a plastic deformation stage from an elastic stage to yield and consume energy under the action of tension and shear or compression and the low yield point steel has lower yield strength and good fatigue performance under the action of reciprocating load, so that the double arc section steel plates enter a yield state before other components, and the energy consumption effect is obvious, namely the energy consumption of the second stage.
The lower connecting component 2 comprises a first connecting plate 2.1, a rectangular connecting block 2.2 and a wedge-shaped connecting block 2.3, wherein the first connecting plate is provided with a plurality of bolt through holes A2.4, and the lower connecting component 2 is connected with a frame beam 9 through high-strength bolts A2.5; the rectangular connecting blocks 2.2 are centrally positioned on the first connecting plate 2.1 in the longitudinal and transverse directions; a plurality of wedge-shaped connecting blocks 2.3 are symmetrically distributed on two sides of the rectangular connecting block 2.2, the number of the wedge-shaped connecting blocks is 2 times that of the connecting lugs 1.1.3, bolt through holes B2.7 are formed in each wedge-shaped connecting block 2.3 along the longitudinal direction, and the lower connecting assembly 2 and the double-arc-shaped soft steel energy consumption assembly 1 are connected through high-strength bolts B2.8.
The middle connecting assembly 3 comprises a second connecting plate 3.1, a rectangular connecting block 2.2 and a wedge-shaped connecting block 2.3, the area of the second connecting plate is not larger than that of the first connecting plate, the second connecting plate 3.1, the rectangular connecting block 2.2 and the wedge-shaped connecting block 2.3 in the assembly are vertically and symmetrically distributed with the first connecting plate 2.1, the rectangular connecting block 2.2 and the wedge-shaped connecting block 2.3 in the lower connecting assembly 2, and other structures are consistent with the lower connecting assembly 2; each wedge-shaped connecting block 2.3 is longitudinally provided with a bolt through hole B2.7, and the middle connecting component 3 and the double-arc-shaped mild steel energy consumption component 1 are connected through a high-strength bolt B2.8.
The middle energy dissipation support assembly 4 comprises an oil cylinder 4.11 and a piston rod 4.12, wherein the piston rod 4.12 is inserted from one end of the oil cylinder 4.11, and a connecting rod 4.27 at the other end is connected with an end sealing plate B4.25; the piston 4.13 positioned at the tail end of the piston rod 4.12 is nested in the separation cylinder 4.29, the airtight space in the separation cylinder 4.29, namely the inner cavity 4.14 is divided into a first cavity 4.15 and a second cavity 4.16, the annular airtight space between the outer wall of the separation cylinder 4.29 and the inner wall of the oil cylinder 4.11 is a backflow cavity 4.17, a first backflow hole 4.18 and a second backflow hole 4.19 are formed at two ends of the separation cylinder 4.29, sealing rubber rings 4.20 are arranged at the parts of the piston 4.13, which are in contact with the inner wall of the separation cylinder and the baffle 4.23, of the piston rod 4.12, so that viscous damping medium 4.26 is prevented from overflowing, a buffer rubber block 4.21 is arranged at the inner wall of the end part B4.25 corresponding to the piston 4.13, the impact force of the piston 4.13 is prevented from being excessively large in the movement process, an oil filling hole 4.22 is reserved at the end part B4.25, so that the inner cavity 4.14 and the backflow cavity 4.17 are ensured to be filled with viscous damping medium 4.26, such as liquid silicone oil.
The four inner walls in the middle of the oil cylinder 4.11 are respectively welded with a drum-shaped stop block 4.31, two sides of the drum-shaped stop block 4.31 are provided with inclined friction plates 4.32, the inclined lower ends of the friction plates 4.32 are fixedly arranged on the piston rod 4.12 through the hinged connection of a high-strength bolt D4.33 and a connecting block 4.34, a plurality of groups of bending springs 4.35 are arranged right below the friction plates 4.32, two ends of each bending spring 4.35 are fixedly connected on the piston rod 4.12 and below the friction plates 4.32 through positioning grooves 4.36, the bending springs 4.35 are arc springs which are processed through special processes and have certain initial rigidity and recovery deformation capacity, the arc springs are made of SMA alloy, the surfaces of the drum-shaped stop block 4.31 and the two friction plates 4.32 are in a certain initial distance in the transverse direction and the vertical direction, and one surface of the friction plates 4.32, which are contacted with the drum-shaped stop block 4.31, are covered with a friction layer, and the arc springs are made of metal sheets with high friction coefficients.
In the transverse direction, a limit stop a4.37 and a limit stop B4.38 are arranged on the outer sides of the two friction plates 4.32, the two limit stops do not affect the rotation of the friction plates 4.32 to the horizontal position, the clearance between the limit stop a4.37 and the end sealing plates a4.34 is a, the clearance between the limit stop B4.38 and the baffle plate 4.23 is B, the clearance between the piston 4.13 and the buffer rubber block 4.21 is c, the clearance between the piston 4.13 and the baffle plate 4.23 is d, and the length e of the friction plates 4.32 in the transverse direction is a=b=c=d < e.
Under the action of large earthquake, along with the increase of the vertical displacement of the structure, the deformation of the double-arc-section energy consumption steel plate along the transverse direction is further increased, the arc-shaped stop blocks 4.28 on the two sides of the arc-section steel plate are touched, the vertical displacement is converted into the energy consumption of the middle energy consumption support assembly 4 along the transverse direction, and the energy consumption of the third stage is realized.
In the process, larger external force is firstly transmitted to the piston 4.13 along the piston rod 4.12 at a faster speed, the piston 4.13 is driven to move in the inner cavity 4.14 to squeeze the viscous damping medium 4.26, so that the viscous damping medium is forced to enter the backflow cavity 4.17 from the first cavity 4.15 or the second cavity 4.16 through the first backflow hole 4.18 or the second backflow hole 4.19, thereby generating throttling damping, dissipating seismic energy, and simultaneously, the viscous damping medium 4.26 newly entering the backflow cavity 4.17 is further squeezed to squeeze the medium in the original backflow cavity, so that the viscous damping medium enters the second cavity 4.16 or the first cavity 4.15 from the backflow cavity 4.17 through the second backflow hole 4.19 or the first backflow hole 4.18, the friction force between the viscous damping medium and the cavity wall is increased, and the energy consumption capacity is improved.
Meanwhile, after the piston rod 4.12 moves for a certain distance, the friction plate 4.32 is driven to contact with the drum-shaped stop block 4.31 to form linear friction, and in the moving process, the friction plate 4.32 rotates along the fixed axis of the high-strength bolt D4.33, so that the bending spring 4.35 is driven to provide an action counter force along the bending direction of the bending spring, and the energy consumption capacity is further improved.
The bending energy consumption assembly 5 comprises a plurality of bending energy consumption plates 5.1, the number of which is determined according to actual working conditions, and the bending energy consumption assembly is made of a low yield point steel plate; the bending energy consumption plate 5.1 is in the shape of a rectangular plate, a complete elliptic block is dug in the middle of the rectangular plate, two arc blocks are dug at two ends of the rectangular plate, the arc blocks are connected with the upper third connecting plate 6.1 and the lower second connecting plate 3.1 through welding, and the welding mode is full penetration welding with K-shaped openings; in the whole structure stress process, the horizontal force of external load acting on the shear wall 7 is transmitted downwards along the wall, wherein bending damage generated by bending action on the bottoms of the two side walls is borne by the bending energy consumption components, so that the damage to the main structure body is avoided.
The upper connection assembly 6 comprises a third connection plate 6.1 of the same size as the first connection plate 2.1; two rectangular vertical end plates 6.2 are longitudinally connected on the third connecting plate 6.1 by welding, two rows of bolt through holes C6.3 are formed in the end plates, the upper row and the lower row are arranged in a staggered mode, and the upper connecting assembly 6 and the shear wall 7 are connected through high-strength bolts C6.4.
The shear wall 7 comprises an orthogonal glued wood abbreviated CLT7.1, a steel sleeve 7.2 and a wood screw 7.3; the orthogonal glued wood 7.1 is formed by vertically and orthogonally assembling three or more solid wood sawn timber or structural composite boards, and the boards are pressed by adopting structural adhesives; the steel sleeve 7.2 is formed by bending a whole steel plate through impact, and the steel sleeve is made of materials such as Q235, Q345 and the like, has a rectangular cross section, and forms a closed rectangular cavity through welding joints, wherein the rectangular cavity accommodates the CLT7.1; wood screw through holes 7.4 are respectively formed in the front and the back of the rectangular steel sleeve 7.2, the pore sizes are the same, and the positions are staggered in an interlaced manner and distributed in a quincuncial manner; the front and the back of the CLT7.1 are respectively provided with a non-penetrating wood screw hole with the same position and aperture as the rectangular steel sleeve 7.2, and the depth of the hole is 1/3 of the thickness of the CLT7.1; the CLT7.1, the steel sleeve 7.2 and the wood screws 7.3 jointly form a shear wall 7; after the bottom corners at two sides of the shear wall 7 are removed, respectively repair-welding right-angle folded steel plates 7.5, and wall toes 0 are arranged at the bottom corners at two sides of the shear wall 7.
The frame beam 9 is a common H-shaped steel or a steel beam welded into an H-shaped section by common steel, and the width of a section flange is not smaller than the width of the shearing connecting piece bottom plate 8.1; the upper flange of the frame beam 9 is provided with bolt through holes A2.4 corresponding to the shearing connector bottom plate 8.1 and the lower connecting component first connecting plate 2.1 respectively.
According to the invention, the wall toe with staged energy consumption is arranged at the weak part of the bottom corner of the shear wall, and under the action of small shock or wind load, the friction sleeve, the high-strength bolt and the oblong bolt through hole are contacted with each other to generate friction energy consumption; under the middle vibration effect, along with the increase of the vertical displacement of the structure, the two arc-section steel plates enter a plastic deformation stage from an elastic stage to yield and consume energy under the action of tensile shearing or compressive shearing, the low yield point steel has lower yield strength, and the fatigue performance is good under the action of reciprocating load, so that the double arc-section steel plates enter a yield state before other components, and the energy consumption effect is obvious; under the action of large earthquake, along with the increase of the vertical displacement of the structure, the deformation of the double-arc-section energy-consumption steel plate outside or inside the transverse plane is further increased, and the arc-shaped stop blocks on two sides of the arc-section steel plate are touched, so that the vertical displacement is converted into the energy consumption of the middle energy-consumption support system along the transverse tension and compression.
The wall toe has simple structure, is easy to design and process, can be produced in factories and can be installed on site; the energy consumption and shock absorption mechanism is clear, the bending energy consumption and the pulling, shearing, pressing and shearing energy consumption independently work, and the bending energy consumption and the pulling, shearing, pressing and shearing energy consumption are matched with each other to form a complete energy consumption system; the energy consumption forms are various, and the friction energy consumption, the metal plastic deformation energy consumption, the elastic deformation energy consumption and the viscous damping energy consumption are orderly combined to form a complete energy consumption system; the damage of the structural main body is concentrated on the toe of the wall, so that the damage deformation of the structural main body is effectively avoided, only the energy-consuming components are required to be replaced after earthquake, the wall and the non-energy-consuming components are basically undamaged, and the repair cost is greatly reduced.
The novel wall body formed by combining the CLT-rectangular steel sleeves has larger lateral rigidity and bearing capacity, greatly reduces the dead weight, remarkably enhances the thermodynamic efficiency, and is environment-friendly and pollution-free.
According to the invention, under the action of external load, the bottom shearing connecting piece can enable the wall body to have larger shearing resistance and simultaneously rotate at different degrees on the surface, and the load acting on the wall body is transferred to bottom corners on two sides, so that a multi-stage energy consumption mechanism is realized, and the wall body swings but is not damaged.

Claims (7)

1. Double-arc soft steel wall toe and swing energy dissipation CLT-rectangular steel sleeve combined shear wall comprises a shear wall (7) and a frame beam (9), and is characterized in that: an assembly part is formed at two feet at the bottom of the shear wall (7), a wall toe energy consumption assembly is arranged between the assembly part and the frame beam (9), a shear connector (8) for connecting the bottom of the shear wall (7) and the frame beam (9) is arranged between the bottom of the shear wall (7) and the frame beam, and the wall toe energy consumption assembly is a three-level energy consumption assembly;
the wall toe energy consumption assembly comprises a lower connecting assembly (2) positioned at the lower part, and the lower connecting assembly (2) is connected with a frame beam (9);
the lower connecting assembly (2) comprises a rectangular connecting block (2.2), wedge-shaped connecting blocks (2.3) are arranged on the outer walls of two sides of the rectangular connecting block (2.2), the wedge-shaped connecting blocks (2.3) are connected with an arc-shaped steel plate (1.1), and the upper end of the arc-shaped steel plate (1.1) is connected with the middle connecting assembly (3);
the top and the bottom of arc steel sheet (1.1) form engaging lug (1.1.3), be provided with oblong bolt through-hole (1.1.4) in engaging lug (1.1.3), be provided with friction sleeve (1.1.5) in oblong bolt through-hole (1.1.4), be provided with in friction sleeve (1.1.5) and pass the bolt that wedge connecting block (2.3) connected.
2. The double-arc-shaped mild steel wall toe and swing energy consumption CLT-rectangular steel sleeve combined shear wall according to claim 1, wherein: the shear connector (8) comprises a bottom plate, two vertical plates are arranged on the bottom plate, the bottom plate and the vertical plates are enclosed to form an installation groove, the installation groove is sleeved on the lower portion of the shear wall (7), and the bottom plate of the shear connector (8) is connected with the frame beam (9).
3. The double-arc-shaped mild steel wall toe and swing energy consumption CLT-rectangular steel sleeve combined shear wall according to claim 1, wherein: the inner wall of the oblong bolt through hole (1.1.4) and the bolt are uniformly coated with friction paint (1.1.6), and friction among the bolt, the friction sleeve (1.1.5) and the oblong bolt through hole (1.1.4) is small vibration energy consumption.
4. The double-arc-shaped mild steel wall toe and swing energy consumption CLT-rectangular steel sleeve combined shear wall according to claim 3, wherein: the top and the bottom of the arc-shaped steel plate (1.1) are thicker than the middle part of the arc-shaped steel plate (1.1), and the deformation of the arc-shaped steel plate (1.1) is medium vibration energy consumption.
5. The double-arc-shaped mild steel wall toe and swing energy consumption CLT-rectangular steel bushing composite shear wall according to claim 4, wherein: the middle connecting assembly (3) comprises a second connecting plate (3.1), a bending energy consumption assembly (5) is arranged at the upper end of the second connecting plate (3.1), an upper connecting assembly (6) is arranged at the upper end of the bending energy consumption assembly (5), and the upper connecting assembly (6) is connected with the shear wall (7).
6. The double-arc-shaped mild steel wall toe and swing energy consumption CLT-rectangular steel bushing combined shear wall according to claim 5, wherein: a middle energy consumption component (4) is arranged between the arc-shaped steel plates (1.1), and the middle energy consumption component (4) consumes energy under the action of large earthquake.
7. The double-arc-shaped mild steel wall toe and swing energy consumption CLT-rectangular steel bushing composite shear wall according to claim 6, wherein: the middle energy consumption assembly (4) comprises an oil cylinder (4.11), a telescopic piston rod (4.12) is arranged in the oil cylinder (4.11), the piston rod (4.12) penetrates through the arc-shaped steel plate (1.1), and viscous damping energy consumption and friction energy consumption are formed in the oil cylinder (4.11).
CN202210874562.3A 2022-07-25 2022-07-25 Double-arc soft steel wall toe and swing energy dissipation CLT-rectangular steel sleeve combined shear wall Active CN115324233B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072869A1 (en) * 1981-02-25 1983-03-02 TOYAMA, Jun Suspension device
JP2008025830A (en) * 2006-06-20 2008-02-07 Shimizu Corp Base isolation device
CN107190879A (en) * 2017-04-20 2017-09-22 同济大学 A kind of orthogonal laminated wood shear wall of the replaceable foundation of band
KR20180116898A (en) * 2017-04-18 2018-10-26 박상태 Beam Connecting Type Friction Damper and Earthquake-proof Method using thereof
CN208168023U (en) * 2018-03-20 2018-11-30 西安建筑科技大学 The replaceable combination energy consumption tension and compression type mild steel damper of one kind and steel plate shear force wall
CN209907638U (en) * 2018-12-28 2020-01-07 青海民族大学 Engineering damping device used under foundation differential settlement and earthquake coupling
CN112854509A (en) * 2021-01-11 2021-05-28 西安建筑科技大学 Arc mild steel energy dissipation damper with viscoelastic material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072869A1 (en) * 1981-02-25 1983-03-02 TOYAMA, Jun Suspension device
JP2008025830A (en) * 2006-06-20 2008-02-07 Shimizu Corp Base isolation device
KR20180116898A (en) * 2017-04-18 2018-10-26 박상태 Beam Connecting Type Friction Damper and Earthquake-proof Method using thereof
CN107190879A (en) * 2017-04-20 2017-09-22 同济大学 A kind of orthogonal laminated wood shear wall of the replaceable foundation of band
CN208168023U (en) * 2018-03-20 2018-11-30 西安建筑科技大学 The replaceable combination energy consumption tension and compression type mild steel damper of one kind and steel plate shear force wall
CN209907638U (en) * 2018-12-28 2020-01-07 青海民族大学 Engineering damping device used under foundation differential settlement and earthquake coupling
CN112854509A (en) * 2021-01-11 2021-05-28 西安建筑科技大学 Arc mild steel energy dissipation damper with viscoelastic material

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