CN113216453A - Shear wall with built-in replaceable energy consumption connection and vertical joint and installation method - Google Patents
Shear wall with built-in replaceable energy consumption connection and vertical joint and installation method Download PDFInfo
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- CN113216453A CN113216453A CN202110674057.XA CN202110674057A CN113216453A CN 113216453 A CN113216453 A CN 113216453A CN 202110674057 A CN202110674057 A CN 202110674057A CN 113216453 A CN113216453 A CN 113216453A
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- 238000009434 installation Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000005265 energy consumption Methods 0.000 title abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 19
- 238000004873 anchoring Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract description 12
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- 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
- 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
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Dampers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
A shear wall with a built-in replaceable energy-consuming connection and a vertical joint and an installation method thereof comprise the shear wall with the vertical joint and a novel shearing energy-consuming replaceable damper, wherein the novel shearing energy-consuming replaceable damper is arranged in the vertical joint of the shear wall with the vertical joint; novel removable attenuator of shearing power consumption type includes the multisection power consumption steel sheet, multisection power consumption steel sheet both ends are provided with T type connecting piece, and T type connecting piece passes through resistance to plucking bolt and takes perps shear force wall rigid coupling, the multisection power consumption steel sheet outside is along oblique diagonal angle through the articulated two sets of dish spring devices of cotter, and articulated interface sets up on T type connecting piece. The self-resetting and replaceable shear wall has high energy consumption efficiency, has self-resetting and replaceable functions, is used for improving the anti-seismic performance of the shear wall, and realizes quick recovery of functions after earthquake.
Description
Technical Field
The invention relates to the technical field of earthquake-resistant structure systems, in particular to a built-in shear wall with replaceable energy consumption connection and a vertical joint and an installation method.
Background
The traditional anti-seismic structure adopts a method for improving the rigidity and the strength of a shear wall. Although the loss can be reduced to a certain extent, the bottom of the shear wall can suffer serious damage and generate remarkable residual deformation, meanwhile, the damage caused by the shear wall is usually difficult to reinforce and repair, and the repair needs a large amount of manpower and material resources, so that the loss caused by the society is still huge.
In order to improve the seismic capacity of the shear wall, an energy dissipation and shock absorption idea in a structure passive control theory is introduced into seismic design, and the shear wall is provided with vertical joints which are connected through energy dissipation devices to form the energy dissipation shear wall with the vertical joints. According to the existing documents and experiments, the energy dissipation devices between the vertical joints of the shear wall can provide effective connection under the action of wind vibration and small vibration, so that the shear wall with the vertical joints has better integrity and enough lateral stiffness, and the deformation requirement of normal use is met; under the action of strong earthquake, the energy dissipation device is used as a first earthquake-proof defense line to dissipate earthquake input energy, so that the damage of the wall body is delayed and alleviated, the shear wall with the whole section is immediately split into a plurality of slender wall limbs, the ductility is obviously improved, the natural vibration period of the structure is increased, and the earthquake force borne by the structure and the input of the earthquake energy are reduced. However, the existing energy-consuming shear wall with the vertical seams still has certain defects, for example, the existing energy-consuming device cannot give full play to the energy-consuming and deformation capabilities, and in addition, the existing energy-consuming device can be replaced after an earthquake and is connected with wall limbs through bolts, but due to the lack of effective self-resetting measures, the replaceability after the earthquake is doubtful due to the residual deformation among the wall limbs.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the shear wall with the vertical joint and the mounting method, wherein the shear wall with the built-in replaceable energy consumption connection has high energy consumption efficiency, has self-resetting and replaceable functions, is used for improving the seismic performance of the shear wall and realizes the quick recovery of the functions after the earthquake.
In order to achieve the purpose, the invention adopts the technical scheme that:
a shear wall with a built-in replaceable energy-consumption connection and a vertical joint comprises a shear wall 1 with a vertical joint and a novel shearing energy-consumption type replaceable damper 2, wherein the novel shearing energy-consumption type replaceable damper 2 is arranged in the vertical joint of the shear wall 1 with the vertical joint;
novel removable attenuator of shearing power consumption type 2 includes multisection power consumption steel sheet 6, 6 both ends of multisection power consumption steel sheet are provided with T type connecting piece 3, and T type connecting piece 3 passes through resistance to plucking bolt 7 and takes 1 rigid couplings of perps shear force wall, 6 outside edges of multisection power consumption steel sheet are along oblique diagonal angle through two sets of dish spring devices 5 of cotter hinge joint, and articulated interface 8 sets up on T type connecting piece 3.
And two groups of hinged joints 8 are welded at the flange end parts of the left side and the right side of the T-shaped connecting piece 3.
The bolt hole on one side of the T-shaped connecting piece 3 is a horizontal strip-shaped pore channel 10, the vertical strip-shaped bolt hole 4 is arranged on the corresponding side of the multi-slit energy-consumption steel plate 6, the common bolt hole is arranged on the T-shaped connecting piece 3 on the other side, and the common bolt hole 9 is also arranged on the multi-slit energy-consumption steel plate 6 on the corresponding side.
The width of the steel strip at different positions of the multi-slit energy-consuming steel plate 6 is determined according to the following formula:
wherein f isyIs the yield strength of the multi-slit energy-consuming steel plate, t is the thickness of the multi-slit energy-consuming steel plate, V is the shearing force,
is the yield bending moment of the end part, L is the length of the multi-slit energy-consumption steel plate, and the width of the steel strip at different positions:
and the minimum width of the steel strip is 20% of the maximum width of the steel strip.
The disc spring device 5 comprises an outer cylinder 11, an inner cylinder 12, a disc spring 14 and baffle plates 13, wherein the disc springs 14 are placed in the outer cylinder 11, the baffle plates 13 are arranged at two ends of each disc spring 14, the inner cylinder 12 penetrates through an inner hole of each disc spring 14 and the baffle plates 13 at two ends of each inner cylinder, one end of each inner cylinder 12 is provided with a hinged joint 15, and one end of each outer cylinder at the other end is provided with a hinged joint 15.
The two groups of disc spring devices 5 are arranged in a crossed manner.
A method for installing a shear wall with a built-in replaceable energy consumption connection and a vertical joint comprises the following steps;
step 1: in the manufacturing process of the shear wall, a vertical joint is reserved in the wall body, anti-pulling bolts 7 are pre-embedded in two side wall limbs of the vertical joint, and the anti-pulling bolts 7 are welded to the T-shaped connecting piece 3 in advance to realize the anchoring of the connecting piece;
step 2: connecting two multi-slit energy-consuming steel plates 6 to the T-shaped connecting piece 3 through detachable bolts to realize the connection of wall limbs;
and step 3: two groups of disc spring devices 5 are hinged on the outer side of the multi-slit energy-consumption steel plate 6 along the oblique opposite angles, and specifically, a hinged joint 8 of the T-shaped connecting piece 3 is connected with a hinged joint 15 of the disc spring devices 5 through a pin bolt so as to complete the installation of the self-resetting device;
and two groups of disc spring devices 5 are arranged on the outer side of the multi-slit energy-consumption steel plate 6 along the diagonal direction through a hinged joint 8 so as to complete the installation of the self-resetting device.
The invention has the beneficial effects that:
compared with the traditional shear wall, the shear wall with the built-in replaceable energy consumption connection and the vertical joints has the advantages that the deformation capacity and the energy consumption capacity are remarkably improved, the damage is also transferred to the replaceable dampers among the vertical joints from the wall feet, and the overall anti-seismic performance is remarkably improved. The adopted novel shearing energy consumption type replaceable damper has the following advantages:
the variable cross-section multi-slit steel plate can exert the plastic energy consumption capability to the maximum extent;
the disc spring devices which are arranged in an oblique and diagonal cross mode can provide self-resetting capability and overcome the problem of axial buckling of the steel plate;
the matching use of the horizontal and vertical strip-shaped pore passages provides a certain redundant space for replacing the energy-consuming steel plate;
the energy dissipation and shock absorption device comprises three energy dissipation mechanisms, namely steel plate plastic energy dissipation, disc spring friction energy dissipation and friction energy dissipation between the connecting plate and the energy dissipation steel plate, and has the advantage of graded multiple energy dissipation.
Drawings
FIG. 1 is a schematic view of a shear wall with a built-in replaceable energy dissipating connection and a vertical joint according to the present invention.
Fig. 2 is a front view of the novel shear dissipative replaceable damper of the present invention.
Fig. 3 is a top view of the novel shear dissipative replaceable damper of the present invention.
FIG. 4 is a schematic view of a T-shaped connector of the present invention.
FIG. 5 is a top view of the T-connector of the present invention.
FIG. 6 is a schematic view of a multi-slit energy-dissipating steel plate according to the present invention.
FIG. 7 is a partial schematic view of a multi-slit energy-dissipating steel plate according to the present invention.
Fig. 8 is a schematic view of a disc spring device according to the present invention.
Fig. 9 is a cross-sectional view of the disc spring device of the present invention.
FIG. 10 is a cloud of damage to a common shear wall.
FIG. 11 is a cloud of damage to a slotted shear wall with built-in replaceable dampers.
FIG. 12 is a schematic view of the hysteresis curve of a common shear wall and a shear wall with a built-in replaceable damper and a vertical joint
Reference numerals are used.
The novel energy-consumption-type shear wall with the vertical joints comprises a shear wall 1 with the vertical joints, a novel shearing energy-consumption-type replaceable damper 2, a T-shaped connecting piece 3, a vertical strip-shaped threaded hole 4, a disc spring device 5, a multi-joint energy-consumption steel plate 6, an anti-pulling bolt 7, a hinged connector 8, a common bolt hole 9, a horizontal strip-shaped bolt hole 10, an outer cylinder 11, an inner cylinder 12, a baffle 13, a disc spring 14 and a disc spring device two-end hinged connector 15.
Detailed Description
The present invention will be described in further detail with reference to examples.
As shown in fig. 1-8, a shear wall with a vertical joint and energy dissipation function comprises a shear wall 1 with a vertical joint and a novel replaceable damper 2 with energy dissipation function, wherein the novel replaceable damper 2 with energy dissipation function comprises a multi-joint energy dissipation steel plate 6, a T-shaped connecting piece 3 and a disc spring device 5.
When the shear wall 1 with the vertical joints is poured, the vertical joints are reserved in advance, and uplift bolts 7 are embedded in two side wall limbs of the vertical joints.
T type connecting piece 3 weld with resistance to plucking bolt 7 in advance to at the edge of a wing tip welding two sets of articulated joint 8 of the T shape connecting piece 3 left and right sides, even if be equipped with from reset device also difficult avoid shake back both sides wall limb have relative residual deformation, consequently the bolt hole of T shape connecting piece 3 one side adopts horizontal bar bolt hole 10, corresponds the side at the multislice power consumption steel sheet 6 and sets up vertical bar bolt hole 4, so that for the power consumption steel sheet change leave certain redundant space, the power consumption steel sheet of the one side that opposite side T type connecting piece 3 corresponds sets up ordinary bolt hole 9.
The multi-slit energy-consumption steel plate 6 converts steel plates mainly subjected to shearing into a series of steel strips mainly subjected to bending through slitting so as to increase energy consumption capacity and plastic deformation capacity. The steel plate slotting energy consumption unit (steel belt) adopts a variable cross section form, namely the steel belt widths at different positions are calculated according to the principle that the external force bending moment born by the steel belt is equal to the yield bending moment of the cross section of the steel belt, so that the yield energy consumption capacity of the steel is exerted to the maximum extent, and the minimum width of the steel belt is limited at the minimum mid-span bending moment to ensure the capacity of transferring shearing force at the position.
The disc spring device 5 includes an outer cylinder 11, an inner cylinder 12, a disc spring 14, and a baffle 13. A plurality of disc springs 14 are designed according to actual requirements and placed in the outer cylinder, the baffles 13 are arranged at two ends of each disc spring 14, and the inner cylinder 12 penetrates through inner holes of the disc springs 14 and the baffles 13 at two ends.
One end of the inner cylinder 12 is provided with a hinged joint 15, and one end of the outer cylinder 11 is provided with a hinged joint 15. The disc spring device 5 can realize that the disc spring 14 is always in a pressed state under the action of tension or pressure so as to provide required restoring force, the vertical component of the restoring force can ensure that the deformed energy-consuming steel plate returns to an initial state, the horizontal component of the restoring force can resist the axial force generated by the left wall limb and the right wall limb, the steel belt with a small cross-middle section is prevented from being buckled, and meanwhile, conical surface friction between the discs under the action of reciprocating load can provide certain damping energy-consuming capacity.
As shown in fig. 6 and 7, in the multi-slit energy-consuming steel plate 6, the width of the steel strip at different positions is determined according to the following formula:
wherein f isyIs the yield strength of the multi-slit energy-consuming steel plate, t is the thickness of the multi-slit energy-consuming steel plate, V is the shearing force,
is the yield bending moment of the end part, and L is the length of the multi-slit energy-consumption steel plate. The steel strip width at different positions can be obtained:
and the minimum width of the steel strip is 20% of the maximum width of the steel strip.
As shown in fig. 10 and fig. 11, by comparing the damage cloud charts of the common shear wall and the shear wall with the vertical joint and the built-in replaceable energy consumption connection, the overall damage degree of the shear wall with the vertical joint and the built-in replaceable energy consumption connection is low, and the damage is transferred to the energy consumption device which can be replaced; meanwhile, the stress of the free end of the web plate is reduced, and the occurrence of a stressed weak area is avoided.
As shown in fig. 12, by comparing hysteresis curves of the common shear wall and the perps shear wall with the built-in replaceable energy consumption connection, although the bearing capacity and the rigidity of the perps shear wall with the built-in replaceable energy consumption connection are weakened to some extent, the deformation capacity and the energy consumption capacity are remarkably enhanced.
The mounting process of the shear wall with the built-in replaceable damper and the vertical joint is as follows:
in the manufacturing process of the shear wall test piece 1, anti-pulling bolts 7 are respectively embedded in two sides of a vertical seam, and the anti-pulling bolts 7 are welded to the T-shaped connecting piece 3 in advance to realize the anchoring of the connecting piece;
connecting two multi-slit energy-consuming steel plates 6 to the T-shaped connecting piece 3 through detachable bolts so as to realize the connection of wall limbs;
connecting the hinged interface 8 of the T-shaped connecting piece 3 with the hinged joint 15 of the disc spring device 5 through a pin bolt to complete the installation of the self-resetting device;
the dish spring device 5 can make the attenuator reset basically behind the earthquake action, demolishs the dish spring of one side temporarily, and the change of power consumption steel sheet 6 can easily be realized to cooperation bar bolt hole 10, resets with dish spring reinstallation afterwards, can realize the reuse of attenuator.
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110674057.XA CN113216453B (en) | 2021-06-17 | 2021-06-17 | A shear wall with vertical seams and a method for installing the wall with replaceable energy-dissipating connections |
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| CN202110674057.XA CN113216453B (en) | 2021-06-17 | 2021-06-17 | A shear wall with vertical seams and a method for installing the wall with replaceable energy-dissipating connections |
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| CN113216453B CN113216453B (en) | 2024-12-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376977A (en) * | 2020-12-01 | 2021-02-19 | 重庆大学 | T-shaped recoverable vertical connecting structure |
| CN115306052A (en) * | 2022-09-05 | 2022-11-08 | 浙江高盛钢结构有限公司 | Vertical joint connecting structure of assembled wall and construction method thereof |
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| CN112376977A (en) * | 2020-12-01 | 2021-02-19 | 重庆大学 | T-shaped recoverable vertical connecting structure |
| CN115306052A (en) * | 2022-09-05 | 2022-11-08 | 浙江高盛钢结构有限公司 | Vertical joint connecting structure of assembled wall and construction method thereof |
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| CN113216453B (en) | 2024-12-03 |
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