CN112982823B - Post-earthquake function recoverable coupling beam with bending shear split control energy consumption mechanism - Google Patents
Post-earthquake function recoverable coupling beam with bending shear split control energy consumption mechanism Download PDFInfo
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- 238000005859 coupling reaction Methods 0.000 title claims abstract description 49
- 238000005452 bending Methods 0.000 title claims abstract description 38
- 238000005265 energy consumption Methods 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 title claims abstract description 34
- 238000004873 anchoring Methods 0.000 claims abstract description 62
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 30
- 230000006870 function Effects 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims description 16
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000010008 shearing Methods 0.000 description 16
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
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- 230000008439 repair process Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
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- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/388—Separate connecting 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
- E04B1/38—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
- 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
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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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Abstract
The invention discloses a post-earthquake function recoverable coupling beam with a bending shear split control energy consumption mechanism, which comprises: the shear wall is characterized in that the first elastic connecting beam, the second elastic connecting beam, the connecting bolt and the anchoring piece are connected, one end of the first elastic connecting beam and one end of the second elastic connecting beam are connected with each other through the connecting slot and the inserting lug in an inserting mode and are connected through the connecting bolt, the contact surfaces of the connecting slot and the inserting lug are friction surfaces, the other ends of the first elastic connecting beam and the second elastic connecting beam are respectively anchored on a shear wall limb through a shape memory alloy lengthened screw rod and the anchoring piece, a reversed V-shaped shear-resistant inserting key is arranged on the shear wall limb, and the shape of the other end surface of the first elastic connecting beam and the shape of the other end surface of the second elastic connecting beam are reversed V-shaped inserting surfaces matched with the reversed V-shaped shear-resistant inserting key. When an earthquake occurs, the first elastic connecting beam and the second elastic connecting beam shear and stagger up and down to drive the friction surface to consume energy, the end part of the connecting beam rotates with the wall limb to drive the shape memory alloy lengthening screw to generate plastic deformation to participate in energy consumption, and the using function can be quickly recovered after the earthquake occurs.
Description
Technical Field
The invention relates to the technical field of structural shock absorption, in particular to a post-earthquake function recoverable connecting beam with a bending shear split control energy consumption mechanism.
Background
Shear wall structures are widely applied to high-rise buildings with good anti-seismic performance, and holes are often formed in the middle of the shear wall according to the requirements of functions and ductility to form the connected shear wall. Actual earthquake damage shows that damage to the building is often concentrated on the connecting beams of the shear wall, and when the connecting beams are completely damaged, the damage to the building further extends to the wall limbs of the shear wall. However, the repair of the coupling beams and the shear wall limbs of the traditional structure is relatively difficult, the repair cost is high, and the recovery of the using function of the building after the earthquake is not facilitated.
Therefore, the students can carry out a series of damping designs on the connecting beam, and the damping designs can be mainly classified into two types: one is a shearing energy consumption type connecting beam, the damper is driven to consume energy by utilizing the mid-span shearing deformation of the connecting beam, but the scheme does not fully utilize the bending deformation of the connecting beam; the other is a bending energy-consumption type connecting beam, the damper is driven to consume energy by utilizing the rotational deformation of the end part of the connecting beam and the wall limb, but the shearing deformation of the connecting beam is not fully utilized in the scheme; more importantly, the two energy-consuming connecting beams can recover the service function after the earthquake damage by replacing a new damper, and have high repairing cost and long repairing time.
Therefore, how to provide a post-earthquake function recoverable connecting beam with a bending shear splitting energy consumption control mechanism is a problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a post-earthquake function recoverable connecting beam with a bending-shearing separately-controlled energy consumption mechanism, so as to solve the problems that the connecting beam in the prior art cannot fully utilize bending and shearing deformation mechanisms to consume energy and is difficult to repair after an earthquake.
In order to achieve the purpose, the invention adopts the following technical scheme:
a post-seismic functional recoverable coupling beam with a bending shear split energy dissipation mechanism, the coupling beam anchored between two shear wall limbs, the coupling beam comprising:
a first elastic connecting beam, one end of which is provided with a connecting slot,
the connecting slot is connected with the second elastic connecting beam through a connecting bolt, the two side wall surfaces of the connecting slot are both first friction surfaces, the two side outer wall surfaces of the inserting lug are both second friction surfaces, and the first friction surfaces are in friction contact with the second friction surfaces;
the two anchoring parts are respectively anchored in the two shear wall limbs, and the other end of the first elastic connecting beam and the other end of the second elastic connecting beam are respectively fixed with the two anchoring parts through threaded connection through a shape memory alloy lengthened screw rod for transmitting bending moment;
the shear wall comprises a first elastic connecting beam, a second elastic connecting beam, a plurality of shear wall limbs, a plurality of shear wall connecting beams and a plurality of shear wall connecting plates, wherein the wall surfaces of the two shear wall limbs respectively in contact with the first elastic connecting beam and the second elastic connecting beam are provided with inverted V-shaped shear-resistant inserting keys for transferring shear force, the other end surface of the first elastic connecting beam and the other end surface of the second elastic connecting beam are both provided with inverted V-shaped inserting surfaces matched with the inverted V-shaped shear-resistant inserting keys, and the inverted V-shaped shear-resistant inserting keys are matched with the inverted V-shaped inserting surfaces for transferring the shear force.
According to the technical scheme, compared with the prior art, the invention discloses the connection beam with the post-earthquake function and the bending shear split control energy consumption mechanism, in an earthquake, one end of the first elastic connection beam and one end of the second elastic connection beam drive the first friction surface and the second friction surface to be in friction contact for energy consumption through the up-down shearing staggered movement of the insertion lug and the connection slot; and the other end of the first elastic connecting beam and the other end of the second elastic connecting beam respectively rotate and displace with the shear wall limb in the earthquake to drive the shape memory alloy lengthening screw to generate plastic deformation for energy consumption. The shearing force of the connecting beam is transmitted by matching the n-shaped shearing-resistant inserting key on the wall limb and the n-shaped inserting surface of the connecting beam, and the bending moment is transmitted by the shape memory alloy lengthening screw rod. The post-earthquake function recoverable connecting beam with the bending shear and separate energy consumption control mechanism can fully utilize the shearing and bending deformation of the connecting beam in an earthquake, adopts different energy consumption mechanisms aiming at the two deformations, and has the advantages of high energy consumption efficiency, obvious effect, clear force transmission path of the structure, clear mechanism and high reliability. In addition, the first elastic connecting beam, the second elastic connecting beam and the connecting bolt can form a shearing energy consumption mechanism, and the connecting bolt can be adjusted to release pretightening force after the earthquake so as to quickly recover the initial position between the first elastic connecting beam and the second elastic connecting beam; and the shape memory alloy lengthened screw rod can automatically reset the displacement of the connecting beam rotating around the shear wall limb after the earthquake. The two reset mechanisms can enable the connecting beam to reset quickly after the earthquake so as to recover the use function of the building, in addition, the two energy consumption mechanism structures are connected through bolts, if any one deformed energy consumption component is damaged or needs to be maintained, the quick replacement can be carried out by using less manpower, and the maintenance cost is greatly reduced.
Further, the angle theta of the convex part of the zigzag-shaped plugging surface1150-170 DEG, the angle theta of the concave part of the zigzag-shaped plugging surface2Is 90-120 degrees.
The beneficial effects that adopt above-mentioned technical scheme to produce are that, the setting of several font inserted surfaces can guarantee that even beam end has good bending deformation to and the wall limb can transmit sufficient shear force to even beam, and the angle theta of the convex part of several font inserted surfaces1150-170 degrees, can ensure that the wall limb provides stable shearing-resisting bearing capacity for the connecting beam, and the angle theta of the concave part of the n-shaped splicing surface2The angle is 90-120 degrees, and the end part of the connecting beam can smoothly rotate around the n-shaped shear-resistant splicing key on the wall limb.
Further, all seted up first rectangular shape hole on connection slot's the both sides wall, the last correspondence of grafting lug has seted up second rectangular shape hole, connecting bolt passes first rectangular shape hole with second rectangular shape hole is used for with even roof beam of first elasticity and second elasticity are connected fixedly.
The beneficial effects that adopt above-mentioned technical scheme to produce are that, first rectangular hole and second rectangular hole alternate each other under connecting bolt's restraint, and the while is the rectangle with the help of connecting grafting and grafting lug contact edge, can realize parallel alternate movement under the condition that connecting bolt provides enough pretightning force, have guaranteed the shear deformation mechanism between first elasticity even roof beam and the second elasticity even roof beam promptly, have guaranteed again that even roof beam provides necessary bearing function for the structure.
Furthermore, a first weight-reducing through groove is formed in the first elastic connecting beam, and a second weight-reducing through groove is formed in the second elastic connecting beam.
The beneficial effect that adopts above-mentioned technical scheme to produce is, reduces the structure dead weight of even roof beam.
Further, each of the anchors includes:
the shape of the n-shaped metal anchoring plate is matched with that of the n-shaped shear-resistant splicing key and is in contact with the n-shaped shear-resistant splicing key in a fitting manner;
the anchoring pipe is embedded in the shear wall limb, one end of the anchoring pipe is fixedly connected with one side of the n-shaped metal anchoring plate, screw rod penetrating holes are formed in the other end of the first elastic connecting beam and the other end of the second elastic connecting beam, and the shape memory alloy lengthened screw rod penetrates through the screw rod penetrating holes to be fixedly connected with the anchoring pipe in a screwed mode.
The beneficial effects that adopt above-mentioned technical scheme to produce are that, the n-shaped anchor board adopts the metal material, and its self tensile strength is better, and is not fragile to the n-shaped metal anchor board has retrained the anchor position of shear force wall limb, has improved the intensity at anchor position.
Furthermore, one side of the n-shaped metal anchoring plate is fixedly connected with a plurality of anchor bars which are pre-embedded in the shear wall limbs.
Further, a plurality of anti-pulling rings are fixed on the spacing sleeve on the wall of the anchoring pipe.
Further, an end anchoring key is fixed at the other end of the anchoring pipe.
The beneficial effects that adopt above-mentioned technical scheme to produce are that, the setting of anchor muscle, resistance to plucking ring and tip anchor key can improve the anchoring ability of anchor pipe, makes the anchor of even roof beam and shear force wall limb more firm, avoids even roof beam anchor part to appear sliding in the earthquake, improves the earthquake security of building.
Furthermore, the upper end and the lower end of the n-shaped metal anchoring plate respectively extend outwards to form an anchoring auxiliary plate, and the anchoring auxiliary plate is attached to the wall surface of the shear wall limb.
The beneficial effect that adopts above-mentioned technical scheme to produce is that, when even beam end rotates around shear force wall limb, the auxiliary plate of anchoring can provide stable bearing capacity, and in addition, the auxiliary plate of anchoring can increase the anchor area on the wall limb, improves the anchor ability of anchor member.
Further, the inner diameter of the anchoring pipe is 1.05 times of the diameter of the shape memory alloy lengthened screw rod, and the diameter of the screw rod through hole is 1.2 times of the diameter of the shape memory alloy lengthened screw rod.
The anchor pipe has the advantages that the inner diameter of the anchor pipe is 1.05 times of the diameter of the shape memory alloy lengthened screw rod, the bolt is possibly wrapped while the shape memory alloy lengthened screw rod is ensured to be smoothly installed, and the stability is improved; the diameter of the screw rod through hole is 1.2 times of the diameter of the shape memory alloy lengthened screw rod, so that the shape memory alloy lengthened screw rod can be ensured to be smoothly installed, and the friction between the shape memory alloy lengthened screw rod and the screw rod through hole, which is generated due to bending deformation, is reduced in an earthquake.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of an assembly structure of a post-earthquake function recoverable coupling beam with a bending shear split energy consumption control mechanism according to the present invention.
Fig. 2 is an exploded view of the coupling beam of fig. 1.
Fig. 3 is a schematic structural view of the first elastic coupling beam and the second elastic coupling beam which are connected through the connecting bolt.
Fig. 4 is a schematic structural diagram of the first elastic coupling beam.
Fig. 5 is a schematic structural view of the second elastic coupling beam.
Fig. 6 is a schematic structural diagram of a zigzag plugging surface.
Fig. 7 is a schematic view of the anchor anchored to a shear wall limb.
Fig. 8 is a schematic structural view of the anchor.
Fig. 9 is a schematic structural diagram of a n-shaped shear plug key on a shear wall limb.
FIG. 10 is a schematic structural view of the shape memory alloy extended screw.
Figure 11 is a schematic view of the coupling beam when applied to a core cylinder wall limb.
In the figure: 1-connecting beam, 101-inverted V-shaped inserting surface, 102-screw through hole, 11-first elastic connecting beam, 111-connecting slot, 1111-first friction surface, 1112-first elongated hole, 112-first lightening through groove, 12-second elastic connecting beam, 121-inserting lug, 1211-second friction surface, 1212-second elongated hole, 122-second lightening through groove, 13-connecting bolt, 14-anchoring member, 141-inverted V-shaped metal anchoring plate, 1411-anchor bar, 1412-anchoring auxiliary plate, 142-anchoring pipe, 1421-pulling-resistant ring, 1422-end anchoring key, 15-shape memory alloy lengthened screw, 2-shear wall limb, 21-inverted V-shaped shear inserting key and 3-core barrel wall limb.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 11, an embodiment of the present invention discloses a post-earthquake function recoverable coupling beam with a bending shear split energy control mechanism, wherein the coupling beam 1 is anchored between two shear wall limbs 2, and the coupling beam 1 includes:
a first elastic coupling beam 11, one end of the first elastic coupling beam 11 is provided with a connecting slot 111,
a second elastic coupling beam 12, wherein one end of the second elastic coupling beam 12 is provided with a plug-in bump 121, the plug-in bump 121 is plugged into the connection slot 111, and the two are connected through a connection bolt 13 (preferably a high-strength bolt), the slot wall surfaces on both sides of the connection slot 111 are both first friction surfaces 1111, the outer wall surfaces on both sides of the plug-in bump 121 are both second friction surfaces 1211, and the first friction surfaces 1111 and the second friction surfaces 1211 are in friction contact;
the two anchoring parts 14 are respectively anchored in the two shear wall limbs 2, and the other ends of the first elastic connecting beam 11 and the second elastic connecting beam 12 are respectively fixed with the two anchoring parts 14 in a threaded manner through shape memory alloy lengthened screw rods 15 for transmitting bending moment;
the wall surfaces of the two shear wall limbs 2, which are respectively in contact with the first elastic connecting beam 11 and the second elastic connecting beam 12, are provided with inverted-V-shaped shear-resistant insertion keys 21 for transferring shear force, the shapes of the other end surface of the first elastic connecting beam 11 and the other end surface of the second elastic connecting beam 12 are respectively provided with inverted-V-shaped insertion surfaces 101 matched with the inverted-V-shaped shear-resistant insertion keys 21, and the inverted-V-shaped shear-resistant insertion keys 21 are matched with the inverted-V-shaped insertion surfaces 101 for transferring shear force.
In the earthquake, the first elastic connecting beam 11 and the second elastic connecting beam 12 generate vertical shearing and dislocation mutually to drive the first friction surface 1111 and the second friction surface 1211 to rub and consume energy; the shape memory alloy lengthening screw 14 connects the connecting beam 1 with the shear wall limb 2 and transmits bending moment, shearing force is transmitted through the n-shaped shear-resistant inserting key 21 on the shear wall limb, the root of the connecting beam 1 and the shear wall limb 2 rotate clockwise or anticlockwise in an earthquake, and the shape memory alloy lengthening screw 14 is driven to generate plastic deformation to participate in energy consumption.
The invention discloses a post-earthquake function recoverable connecting beam with a bending shear separation energy consumption control mechanism, which dissipates energy generated by shear deformation by utilizing a contact friction surface between a first elastic connecting beam and a second elastic connecting beam; dissipating energy generated by the rotation of the end part of the coupling beam around the wall limb of the shear wall by using the shape memory alloy lengthened screw; the n-shaped shear-resistant plug-in keys of the shear wall limbs provide shear-resistant bearing capacity for the connecting beams, and the shape memory alloy lengthened screw rods provide bending-resistant bearing capacity for the connecting beams; the structure can fully utilize the shearing deformation and the bending deformation of the connecting beam to perform high-efficiency energy consumption on one hand, and on the other hand, the structure has definite force transmission path, clear principle, safety and reliability.
Referring to fig. 6, in order to ensure that the end of the coupling beam has good bending deformation and the wall can transmit enough shearing force to the coupling beam, the end of the coupling beam can be arranged to be inserted into the inverted V-shaped shear plugA key-shaped adapting V-shaped inserting surface 101, and the angle theta of the convex part of the V-shaped inserting surface 1011Is 150 to 170 degrees, preferably 150 degrees, to ensure that the shear wall limbs provide sufficient and stable shear resistance to the coupling beam, the angle theta of the concave part of the zigzag-shaped plugging surface 1012Is 90 to 120, preferably 120, to allow smooth rotation of the beam ends about the wall limbs.
Referring to fig. 4-5, the two sidewalls of the connecting slot 111 are respectively formed with a first elongated hole 1112, the inserting protrusion 121 is correspondingly formed with a second elongated hole 1212, and the connecting bolt 13 passes through the first elongated hole 1112 and the second elongated hole 1212 to connect and fix the first elastic coupling beam and the second elastic coupling beam. The first strip-shaped hole and the second strip-shaped hole are mutually dislocated under the constraint of the connecting bolt, and meanwhile, the rectangular connecting plug and the rectangular plug lug contact edge are rectangular, so that the parallel dislocated motion can be realized under the condition that the connecting bolt provides enough pretightening force, and the connecting beam is ensured to provide a necessary bearing function for the structure.
Referring to fig. 3 to 5, the first flexible coupling beam 11 and the second flexible coupling beam 12 may be made of steel and high strength fiber concrete, preferably steel, to ensure local load bearing capacity and overall tensile strength at the coupling portion. Wherein, the first elastic coupling beam 11 is provided with a first weight-reducing through groove 112, the second elastic coupling beam 12 is provided with a second weight-reducing through groove 122, and after the grooves are formed, the longitudinal sections of the other end of the first elastic coupling beam and the other end of the second elastic coupling beam are corrugated, so as to ensure the necessary bending resistance, shearing resistance and beam end rotation capacity.
Referring to fig. 7-10, each anchor 14 includes:
the n-shaped metal anchoring plate 141, the shape of the n-shaped metal anchoring plate 141 is matched with the shape of the n-shaped shear plug key 21 and is in contact with the n-shaped shear plug key;
the anchoring pipe 142 is embedded in the shear wall limb 2, one end of the anchoring pipe 142 is fixedly connected with one side of the n-shaped metal anchoring plate 141, the other end of the first elastic connecting beam 11 and the other end of the second elastic connecting beam 12 are both provided with screw penetrating holes 102, and the shape memory alloy lengthened screw 15 penetrates through the screw penetrating holes 102 to be fixed with the anchoring pipe 142 in a threaded manner.
One side of the n-shaped metal anchoring plate 141 is fixedly connected with a plurality of anchor bars 1411 which are pre-embedded in the shear wall limb 2.
The spacer sleeve on the wall of the anchor tube 142 has a plurality of anti-pull rings 1421 attached thereto.
An end anchor key 1422 is fixed to the other end of the anchor tube 142.
The upper end and the lower end of the n-shaped metal anchoring plate 141 respectively extend outwards to form an anchoring auxiliary plate 1412 with the length of 10cm, and the anchoring auxiliary plate 1412 is attached to the wall surface of the shear wall limb 2. When the end part of the coupling beam rotates around the shear wall limb, the auxiliary anchoring plate can provide stable bearing capacity, and in addition, the auxiliary anchoring plate can increase the anchoring area on the wall limb and improve the anchoring capacity of the anchoring part.
Because the length of the shape memory alloy lengthened screw rod is longer, when the anchoring piece is installed, the anchoring piece is inserted at an inclined angle, the diameter of the screw rod penetrating hole 102 is 1.2 times of the diameter of the shape memory alloy lengthened screw rod 15, and the inner diameter of the anchoring pipe 142 is 1.05 times of the diameter of the shape memory alloy lengthened screw rod 15.
The post-earthquake function recoverable connecting beam with the bending shear sub-control energy consumption mechanism adopts the first elastic connecting beam, the second elastic connecting beam and the connecting bolt to form the shearing energy consumption mechanism, and the connecting bolt can be adjusted to release pretightening force after the earthquake so as to quickly recover the initial position between the first elastic connecting beam and the second elastic connecting beam; and the shape memory alloy lengthened screw rod can automatically reset the displacement of the connecting beam rotating around the shear wall limb after the earthquake. The two reset mechanisms can enable the connecting beam to reset quickly after the earthquake so as to recover the use function of the building, in addition, the two energy consumption mechanism structures are connected through bolts, if any one deformed energy consumption component is damaged or needs to be maintained, the quick replacement can be carried out by using less manpower, and the maintenance cost is greatly reduced.
For example, referring to fig. 11, the post-earthquake function recoverable connecting beam with the bending shear split control energy consumption mechanism is installed between the core cylindrical wall limbs 3, under the action of a bidirectional earthquake, a group of core cylindrical wall limbs always deform to drive the connecting beam disclosed by the invention to consume energy, so that the main body structure is protected from being damaged, and the use function can be rapidly recovered after the earthquake.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A post-earthquake functional recoverable coupling beam with a bending shear split energy dissipation mechanism, the coupling beam (1) being anchored between two shear wall limbs (2), characterized in that the coupling beam (1) comprises:
a first elastic connecting beam (11), one end of the first elastic connecting beam (11) is provided with a connecting slot (111),
the elastic connecting beam (12) is provided with an inserting lug (121) at one end of the elastic connecting beam (12), the inserting lug (121) is inserted into the connecting slot (111) and connected with the connecting slot (111) through a connecting bolt (13), the slot wall surfaces on two sides of the connecting slot (111) are both first friction surfaces (1111), the outer wall surfaces on two sides of the inserting lug (121) are both second friction surfaces (1211), and the first friction surfaces (1111) are in friction contact with the second friction surfaces (1211);
the two anchoring parts (14) are respectively anchored in the two shear wall limbs (2), and the other end of the first elastic connecting beam (11) and the other end of the second elastic connecting beam (12) are respectively fixed with the two anchoring parts (14) through shape memory alloy lengthened screws (15) for transmitting bending moment in a screwing mode;
the shear wall comprises two shear wall limbs (2), wherein convex inverted-V-shaped shear-resistant insertion keys (21) are arranged on the wall surface which is respectively contacted with the first elastic connecting beam (11) and the second elastic connecting beam (12), the shapes of the other end surface of the first elastic connecting beam (11) and the other end surface of the second elastic connecting beam (12) are respectively provided with an inward inverted-V-shaped insertion surface (101) matched with the inverted-V-shaped shear-resistant insertion keys (21), and the inverted-V-shaped shear-resistant insertion keys (21) are matched with the inverted-V-shaped insertion surfaces (101) to transfer shear force.
2. The post-earthquake function recoverable coupling beam with the bending shear splitting energy consumption mechanism as claimed in claim 1, wherein the angle θ of the convex part of the zigzag insertion surface (101) is1Is 150-170 DEG, and the angle theta of the concave part of the zigzag-shaped plugging surface (101)2Is 90-120 degrees.
3. The coupling beam capable of restoring the function after the earthquake with the bending shear and energy consumption control mechanism according to claim 1, wherein two side walls of the connecting slot (111) are respectively provided with a first elongated hole (1112), the inserting lug (121) is correspondingly provided with a second elongated hole (1212), and the connecting bolt (13) passes through the first elongated hole (1112) and the second elongated hole (1212) and is used for connecting and fixing the first elastic coupling beam (11) and the second elastic coupling beam (12).
4. The connecting beam capable of restoring after-earthquake function with the bending shear splitting energy consumption mechanism as claimed in claim 1, wherein a first weight-reducing through groove (112) is formed on the first elastic connecting beam (11), and a second weight-reducing through groove (122) is formed on the second elastic connecting beam (12).
5. A post-earthquake function recoverable coupling beam with a bending shear splitting energy dissipation mechanism according to any one of claims 1 to 4, characterized in that each of said anchoring elements (14) comprises:
the n-shaped metal anchoring plate (141), the shape of the n-shaped metal anchoring plate (141) is matched with the shape of the n-shaped shear plug-in key (21) and is in contact with the n-shaped shear plug-in key;
the anchoring pipe (142) is embedded in the shear wall limb (2), one end of the anchoring pipe is fixedly connected with one side of the n-shaped metal anchoring plate (141), screw penetrating holes (102) are formed in the other end of the first elastic connecting beam (11) and the other end of the second elastic connecting beam (12), and the shape memory alloy lengthening screw (15) penetrates through the screw penetrating holes (102) and is fixedly connected with the anchoring pipe (142) in a threaded mode.
6. The post-earthquake function recoverable coupling beam with the bending shear splitting energy consumption control mechanism as claimed in claim 5, wherein one side of the n-shaped metal anchoring plate (141) is fixedly connected with a plurality of anchor bars (1411) embedded in the shear wall limbs (2).
7. The post-earthquake functional recoverable coupling beam with the bending shear splitting energy dissipation mechanism as claimed in claim 5, wherein a plurality of anti-pulling rings (1421) are fixed on the wall of the anchoring pipe (142) through spacers.
8. The post-earthquake function recoverable coupling beam with the bending shear splitting energy consumption mechanism as claimed in claim 5, wherein an end anchoring key (1422) is fixed to the other end of the anchoring pipe (142).
9. The post-earthquake function recoverable coupling beam with the bending shear splitting energy consumption mechanism as claimed in claim 5, wherein the upper end and the lower end of the n-shaped metal anchoring plate (141) respectively extend outwards to form an anchoring auxiliary plate (1412), and the anchoring auxiliary plate (1412) is attached to the wall surface of the shear wall limb (2).
10. The post-earthquake function recoverable coupling beam with the bending shear splitting energy consumption mechanism as claimed in claim 5, wherein the inner diameter of the anchoring pipe (142) is 1.05 times the diameter of the shape memory alloy lengthening screw (15), and the diameter of the screw through hole (102) is 1.2 times the diameter of the shape memory alloy lengthening screw (15).
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| CN114065534B (en) * | 2021-11-22 | 2022-05-03 | 哈尔滨工业大学 | Method for determining post-earthquake restoration scheme of subway underground station |
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| CN103669637A (en) * | 2013-12-31 | 2014-03-26 | 海南大学 | Energy dissipation enhanced-type replaceable coupling beam |
| CN104652644A (en) * | 2015-02-13 | 2015-05-27 | 海南大学 | Connecting beam energy consumption device |
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| CN206987189U (en) * | 2017-01-11 | 2018-02-09 | 同济大学 | One kind can recover function coupling beam |
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| US20180127968A1 (en) * | 2016-11-10 | 2018-05-10 | University Of South Carolina | Flange Connectors for Double Tee Beams |
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| CN103669637A (en) * | 2013-12-31 | 2014-03-26 | 海南大学 | Energy dissipation enhanced-type replaceable coupling beam |
| CN104652644A (en) * | 2015-02-13 | 2015-05-27 | 海南大学 | Connecting beam energy consumption device |
| CN104805958A (en) * | 2015-04-02 | 2015-07-29 | 同济大学 | Bi-stage yielding energy dissipation steel coupling beam applied to coupled shear wall structure |
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