CN107288399B - Buckling restrained brace, building and assemble method containing L-type dissipative cell - Google Patents
Buckling restrained brace, building and assemble method containing L-type dissipative cell Download PDFInfo
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- CN107288399B CN107288399B CN201710610892.0A CN201710610892A CN107288399B CN 107288399 B CN107288399 B CN 107288399B CN 201710610892 A CN201710610892 A CN 201710610892A CN 107288399 B CN107288399 B CN 107288399B
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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 kind of buckling restrained brace containing L-type dissipative cell, building and assemble methods, belong to civil structural engineering and resist external force member arts.Buckling restrained brace containing L-type dissipative cell of the invention includes telescopic interior confining part, the outer confining part being set in outside interior confining part, the L-type dissipative cell between interior confining part and outer confining part；Interior confining part includes the first square steel tube and the second square steel tube of plug connection；L-type dissipative cell includes 4 L-type core plates, and the both ends of 4 L-type core plates are bolted to respectively on four right-angle sides of the first square steel tube and the second square steel tube；The inner section of outer confining part be it is rectangular, for being coated on the outside of L-type dissipative cell, be provided with certain interval between outer confining part and L-type dissipative cell.Present invention disassembly and replacement are simple, and buckling-restrained component facilitates recycling.
Description
Technical field
The present invention relates to civil structural engineerings to resist external force component technology field, particularly relates to a kind of containing L-type energy consumption member
Buckling restrained brace, building and the assemble method of part.
Background technique
In multilayer or high-story house steel structure system, frame is most basic unit.It is higher that support has steel frame
Anti-side rigidity and intensity, reduce earthquake when frame lateral displacement, avoid or reduce the destruction to unstructuredness component.Buckling
The shortcomings that constraint support overcomes common support compressive buckling, improves the energy dissipation capacity of support, reduces support tension and compression carrying
The difference in size of power also makes computer simulation simpler.
Buckling restrained brace in new building structure and existing is built after 1994 Nian Beiling earthquakes and nineteen ninety-five Osaka-Kobe earthquake
Application increases considerably in terms of building the transformation of object.Various high-performance buckling restrained braces emerge one after another.But at present common bends
There are following limitations for song constraint support:
1) remove and replace cumbersome: the dissipative cell of buckling restrained brace needs to consume the energy of Seismic input in earthquake
Amount, energy consumption inevitably will cause the damage of dissipative cell perhaps fracture therefore in aftershock or subsequent coming earthquake,
The energy-dissipating and shock-absorbing effect of buckling restrained brace may have a greatly reduced quality.For existing buckling restrained brace, especially with filling
Mortar or other brittle non-metal packing materials in steel pipe realize the buckling-restrained of buckling-restrained mechanism to dissipative cell
Support, after violent earthquake, if to detect to the damage of dissipative cell, needs to remove outer confining part, this is not only operated
It is please also possible to that support can be damaged.Even if special technological means confirms that it is necessary to replace the buckling-restrained branch damaged
Support, the disassembly of existing buckling restrained brace and the installation of new buckling restrained brace may be very complicated, and reason has very much, such as
The construction operation space of buckling restrained brace end is very limited, especially the node when buckling restrained brace and frame junction
When plate is completely or partially blocked by ceiling or other non-structural elements.In addition many existing common buckling restrained braces are logical
Weld seam is crossed to be connected with the gusset plate of connection framework, replacing whole support in this way certainly will need to apply secondary welding on gusset plate,
Secondary welding is not only difficult to apply, and quality not can guarantee, and welds the fuel factor generated and will affect the mechanical property of gusset plate,
Reduce the bearing capacity and fatigue behaviour newly supported.
2) it is poor that property can be recycled: a reasonable buckling restrained brace of design should be by Damage Coutrol in dissipative cell
In constraint surrender section, and buckling-restrained component should remain elasticity, however, buckling in now many traditional buckling restrained braces
The recycling rate of waterused of confining part is very low, this is highly detrimental to the target for realizing design based on the concept of sustainable development.
Summary of the invention
The present invention provides a kind of disassembly and replacement is simple, buckling-restrained component facilitate recycling containing L-type energy consumption member
Buckling restrained brace, building and the assemble method of part.
In order to solve the above technical problems, present invention offer technical solution is as follows:
On the one hand, the present invention provides a kind of buckling restrained brace containing L-type dissipative cell, the branch as frame structure
Support including telescopic interior confining part, the outer confining part being set in outside the interior confining part, is located at the interior constraint
L-type dissipative cell between component and outer confining part, in which:
The interior confining part includes two length and outer cross section size the first square steel tube and the second square steel tube all the same,
First square steel tube and the second square steel tube plug connection, the end of first square steel tube and the second square steel tube away from each other are used
It is connect in frame structure；
The L-type dissipative cell includes 4 L-type core plates, and the both ends of 4 L-type core plates are bolted to described the respectively
On four right-angle sides of one square steel tube and the second square steel tube, the on both sides of the middle of the angle limb of the L-type core plate has grooving/notch, shape
At the surrender section being weakened, both ends are non-compliant section not be weakened；
The inner section of the outer confining part be it is rectangular, for being coated on the outside of the L-type dissipative cell, it is described it is outer about
Certain interval is provided between beam component and the L-type dissipative cell.
Further, first square steel tube is identical with second party steel pipe sizes, first square steel tube and the second square steel
It is connected between pipe by plug connector, the plug connector is square steel tube, and circumferentially direction is provided in the middle part of the plug connector and is hung down
Directly in the rib of square steel tube plane, the outer cross section size of the plug connector is less than the inner section size of first square steel tube, described
One end of plug connector and first party steel-pipe welding or grafting, the other end are inserted into second square steel tube.
Further, the length of first square steel tube and the second square steel tube is 100~5000mm, first square steel
Spacing between pipe and the second square steel tube is 20~500mm, between the outer wall of the plug connector and the inner wall of the second square steel tube
Gap is 1~10mm, and the length that the plug connector is inserted into the second square steel tube is 20~800mm.
Further, it is provided on non-compliant section of the exterior portion and first square steel tube and second party steel pipe connecting
The bolt hole connect, described non-compliant section include be provided with bolt hole without constraint linkage section, not set bolt hole and not described
Outer confining part is coated without non-compliant section of constraint and not set bolt hole and non-in the wrong by the constraint of the outer confining part cladding
Section is taken, the outer confining part is coated in the surrender section and non-compliant section of constraint, and the surrender section is by the interior constraint
Section is surrendered in the constraint of component and the constraint of outer confining part.
Further, on the lower angle limb of the L-type core plate described without non-compliant section of constraint on be fixedly installed and be used for
Lift the lift part of the outer confining part；
It is provided with non-compliant section not be weakened in the middle part of the angle limb of the surrender section of the L-type core plate, forms intermediate restraint
Non-compliant section, the length of non-compliant section of the intermediate restraint is greater than buckling restrained brace and the deformation of design maximum tensile bearing capacity occurs
Spacing between the first square steel tube of Shi Suoshu and the second square steel tube.
Further, the outer confining part is formed by four W-shaped steel plate snappings, adjacent W-shaped steel crab bolt connection；
It is formed alternatively, the outer confining part is bolted by the consistent U-shaped steel plate of two opening directions；
Alternatively, the outer confining part includes the U-shaped steel plate opposite back to two opening directions of setting, the U-shaped steel
There are two steel plates for the side bolt connection of plate；
Alternatively, the outer confining part is formed by two U-shaped steel plate snappings, which is bolted two-by-two.
Further, the gap between the outer confining part and the L-type dissipative cell is 1~5mm, in the gap
Filled with non-cohesive material.
Further, the transition region between non-compliant section of the constraint, constraint surrender section and non-compliant section of intermediate restraint is
Camber line, straight line or straight line add camber line.
On the other hand, the present invention provides a kind of building, includes the above-mentioned buckling-restrained branch containing L-type dissipative cell
Support.
In another aspect, the present invention also provides a kind of assembling sides of above-mentioned buckling restrained brace containing L-type dissipative cell
Method, comprising:
Step 1: by one end of the plug connector and first party steel-pipe welding or grafting, the other end is inserted into the second square steel tube
It is interior, form the interior confining part；
Step 2: the spacing between the first square steel tube of adjustment and the second square steel tube, by the L-type dissipative cell without constraint
Linkage section is bolted on the right-angle side of the first square steel tube and the second square steel tube；
Step 3: L-type dissipative cell cladding being got up using outer confining part, and by the composition portion of outer confining part
Divide and is bolted.
The invention has the following advantages:
Compared with prior art, the buckling restrained brace containing L-type dissipative cell, building and assembling side of the invention
Method, the both ends of 4 L-type core plates of L-type dissipative cell are bolted the first square steel tube and second party in interior confining part respectively
On four right-angle sides of steel pipe, it is easy for installation and removal；Surrender section of the damage concentration in L-type core plate, interior confining part after earthquake
Elasticity is still maintained with outer confining part, it is reusable, it is only necessary to replace L-type core plate, buckling restrained brace can restore to consume
It can shock-absorbing function.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the buckling restrained brace of the invention containing L-type dissipative cell；
Fig. 2 is the broken away view of each component of the buckling restrained brace of the invention containing L-type dissipative cell；
Fig. 3 is the connection schematic diagram of L-type dissipative cell and interior confining part of the invention；
Fig. 4 is the first embodiment schematic diagram of interior confining part of the invention；
Fig. 5 is second of embodiment schematic diagram of interior confining part of the invention；
Fig. 6 is the structural schematic diagram of the plug connector of interior confining part of the invention；
Fig. 7 is the composition form schematic diagram of the plug connector of interior confining part of the invention；
Fig. 8 is the structural schematic diagram of the first square steel tube of interior confining part of the invention；
Fig. 9 is the perspective view of L-type core plate of the invention；
Figure 10 is the different structure form side view of L-type core plate of the invention；
Figure 11 is the different structure schematic diagram of lift part of the invention；
Figure 12 is the schematic cross-section of the embodiment 1 of outer confining part of the invention；
Figure 13 is the schematic cross-section of the embodiment 2 of outer confining part of the invention；
Figure 14 is the schematic cross-section of the embodiment 3 of outer confining part of the invention；
Figure 15 is the schematic cross-section of the embodiment 4 of outer confining part of the invention；
Figure 16 is the hysteresis loop of test specimen B1 to B6.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
On the one hand, the present invention provides a kind of buckling restrained brace containing L-type dissipative cell, the branch as frame structure
Support, as shown in Fig. 1 to Figure 15, including telescopic interior confining part 1, the outer confining part being set in outside interior confining part 1
2, the L-type dissipative cell between interior confining part 1 and outer confining part 2, in which:
Interior the confining part 1 first square steel tube 1-1 and second square steel tube all the same including two length and outer cross section size
The axis of 1-2, the first square steel tube 1-1 and the second square steel tube 1-2 plug connection, the first square steel tube 1-1 and the second square steel tube 1-2 exist
On same straight line, the end of the first square steel tube 1-1 and the second square steel tube 1-2 away from each other with frame structure for connecting, specifically
, the outer end surrounding of the first square steel tube 1-1 or the second square steel tube 1-2 can open strip groove, by connecting plate 1-3 or directly with
The gusset plate of frame structure connects, as shown in figure 8, the section of connecting plate 1-3 is cross, criss-cross connecting plate 1-3 welding
In the outer end of the first square steel tube 1-1 and the second square steel tube 1-2, the first square steel tube 1-1 and the second square steel tube 1- of interior confining part 1
2 can be with relative motion, after mounting on axis of support direction, it is to be ensured that buckling restrained brace is held by design maximum resistance to compression
When carrying power deformation, the identical end of outer cross section size adjacent to each other of the first square steel tube 1-1 and the second square steel tube 1-2 will not be mutual
It is in contact, when being deformed by design maximum tensile bearing capacity, the first square steel tube 1-1 and the second square steel tube 1-2's is adjacent to each other
End will not deviate from mutually；It is worth noting that, under conditions of meeting design tension/Compressive Bearing Capacity, the first square steel tube
1-1 and the second square steel tube 1-2 can also be rectangular tube or the steel pipe of other cross sectional shapes, and those skilled in the art can be with
Flexible choice does not influence creativeness of the invention；In addition, design maximum tension/Compressive Bearing Capacity of the invention is this field skill
Art personnel design according to the loading characteristic of specific frame structure.
L-type dissipative cell includes 4 L-type core plates 3, and the both ends of 4 L-type core plates 3 are bolted to the first square steel respectively
On four right-angle sides of pipe 1-1 and the second square steel tube 1-2, bolt can be using the blind hole bolt or spiral shell for meeting design strength requirement
The cross section of the longer high-strength bolt of bar, L-type core plate 3 is L-type, cut by ready-made fashioned iron, or is utilized
The steel plate cold bending cut forms, and does not need to weld, and reduces the initial imperfection of dissipative cell, is conducive to give full play to steel
Performance.
When being bolted with the first square steel tube 1-1 and the second square steel tube 1-2 of L-type core plate 3, bolt herein can use
Meet blind hole bolt or the sufficiently long high-strength bolt of screw rod etc. of design requirement, the first square steel tube 1-1 and the second square steel tube 1-2 can
To open bolt hole according to design position and size, on the same face, the arrangement mode of bolt hole be can choose side by side or stagger arrangement, spiral shell
The opening of keyhole can neither make bolt interact, and cannot influence the relatively living of the first square steel tube 1-1 and the second square steel tube 1-2
Dynamic, aperture can be consistent on parallel two faces, and vertical two face apertures can be staggered, and concrete operations can be according to actually using
Depending on bolt type.
The on both sides of the middle of the angle limb of L-type core plate 3 has grooving/notch 4, forms the surrender section 3-1 being weakened, both ends be not by
The non-compliant section of 3-2 weakened；
The inner section of outer confining part 2 be it is rectangular, for being coated on the outside of L-type dissipative cell, outer confining part 2 and L
Certain interval is provided between type dissipative cell.
Compared with prior art, the buckling restrained brace of the invention containing L-type dissipative cell, 4 of L-type dissipative cell
The both ends of L-type core plate are bolted respectively on the first square steel tube of interior confining part and four right-angle sides of the second square steel tube,
It is easy for installation and removal, convenient for replacing L-type dissipative cell after earthquake, when replacement, is not required to weld, it only need to be by new L
Core plate is bolted on interior confining part；Buckling restrained brace containing L-type dissipative cell of the invention, it is interior when installation
Then 4 L-type core plates are bolted to the first square steel tube by the first square steel tube of confining part and the second square steel tube plug connection
On four right-angle sides of the second square steel tube, outer confining part is finally coated on to the outside of L-type core plate, tension or in compression
When, it can be by damage concentration in the surrender section of L-type core plate, interior confining part and outer confining part still maintain elasticity after earthquake,
It is reusable, it is only necessary to replace L-type core plate, buckling restrained brace can restore energy-dissipating and shock-absorbing function.
Further, the first square steel tube 1-1 and the second square steel tube 1-2 size preferably identical (i.e. length, thickness, outer cross section
It is identical), material is preferably also identical, as shown in Figures 4 to 6, passes through grafting between the first square steel tube 1-1 and the second square steel tube 1-2
Part 1-4 connection, plug connector 1-4 are that square steel tube, one end of plug connector 1-4 and the first square steel tube 1-1 welding or grafting, the other end are inserted
Enter in the second square steel tube 1-2, as plug connector 1-4 and the first square steel tube 1-1 grafting, is preferably provided in the middle part of plug connector 1-4
It direction and (is not needed then when welding) perpendicular to the rib 1-5 of square steel tube plane circumferentially, prevents plug connector 1-4 from sliding into first party
In steel pipe 1-1 or the second square steel tube 1-2, it is notable that the Outside Dimensions of rib 1-5 are no more than the first square steel tube 1-1 or the
The size of two square steel tube 1-2 outermosts does not influence the installation of L-type dissipative cell, and the outer cross section size of plug connector 1-4 is less than first
The inner section size of square steel tube 1-1 and the second square steel tube 1-2 had both guaranteed that the second square steel tube 1-2 and plug connector 1-4 be free to
Opposite sliding, ensure again the first square steel tube 1-1 and the second square steel tube 1-2 to L-type dissipative cell play it is relatively effective it is interior about
Shu Zuoyong.
Further, the length of the first square steel tube 1-1 and the second square steel tube 1-2 can be 100~5000mm, install
At original state under, spacing between the first square steel tube 1-1 and the second square steel tube 1-2 is 20~500mm, i.e. the first square steel tube
Design maximum tension/resistance to compression that the distance of end 1-1 and the second square steel tube 1-2 close to each other will meet buckling restrained brace is held
Carry power deformation requirements；Gap between the outer wall of plug connector 1-4 and the inner wall of the second square steel tube 1-2 is preferably 1~10mm, is guaranteed
Plug connector 1-4 can be free to slide with the second square steel tube 1-2；The length that plug connector 1-4 is inserted into the second square steel tube 1-2 is preferably
20~800mm prevents buckling restrained brace in tension, and plug connector 1-4 deviates from the second square steel tube 1-2.
It is worth noting that, as shown in fig. 7, the square steel tube of plug connector 1-4 can use integrally formed steel pipe, two sides
Pipe is welded or the diversified forms such as steel plate and fashioned iron welding do not influence implementation of the invention as long as meeting design requirement.
Preferably, as shown in figure 9, being provided on the exterior portion of non-compliant section of 3-2 and the first square steel tube 1-1 and second party
The bolt hole 3-2-1, non-compliant section of 3-2 of steel pipe 1-2 connection include be provided with bolt hole 3-2-1 without constraint linkage section 3-2-2,
Not set bolt hole 3-2-1 and not by outer confining part 2 coat without constraint non-compliant section of 3-2-3 and not set bolt hole 3-2-
1 and non-compliant section of 3-2-4 of constraint for being coated by outer confining part 2, outer confining part 2 are coated on surrender section 3-1 and constrain non-bend
It takes on section 3-2-4, the dotted line in Fig. 9 is wrapped position of the outer confining part 2 in L-type core plate 3, and left side of dotted line is non-in the wrong without constraining
Take section 3-2-3, right side of dotted line is non-compliant section of 3-2-4 of constraint, surrender section 3-1 be by interior confining part 1 and outer confining part 2 about
Section is surrendered in the constraint of beam.It is worth noting that, the length of non-compliant section of 3-2-4 of constraint wants long enough, held in buckling restrained brace
When being deformed by design maximum tensile bearing capacity outside endless total detachment confining part 2 constraint, the length of non-compliant section of 3-2-3 of no constraint
Degree is suitable, it is ensured that when buckling restrained brace is deformed by design maximum Compressive Bearing Capacity, no constraint linkage section 3-2-2 with it is outer about
Still there are gaps between the end of beam component 2.
Preferably, it is fixedly installed on without non-compliant section of 3-2-3 of constraint for lifting on the lower angle limb of L-type core plate 3
The lift part 5 of outer confining part 2, lift part 5 can be fixedly connected with L-type core plate 3 using modes such as welding, the number of lift part 5
Amount has multiple, and what multiple lift parts supported outer confining part 2 lifts face in the same plane and the length of the plane and L-type core plate
Direction is vertical, and as shown in figure 11, lift part 5 is preferably angle steel or V shaped slab, and Figure 11 (a) is angle steel, and 11 (b) be V shaped slab, is pacifying
When dress, if lift part is angle steel, a right-angle side of angle steel is preferably welded on lower angle limb, and another right-angle side is outer for lifting
Confining part, if lift part is V shaped slab, the end of V shaped slab is welded on lower angle limb, and certain lift part can also be using this
The other structures form that field technical staff is contemplated that, implementation that should not be of the invention；Lift part 5 is located at L-type core plate
On the angle limb of bottom, the gravity of the outer confining part of multiple 5 shareds of lift part stops outer confining part to slide down, lifts
The particular number of part 5 can flexible setting according to the actual situation.
Due to the gap between the first square steel tube 1-1 and the second square steel tube 1-2 of interior confining part 1, plug connector 1-4's
Sectional dimension is small, and effect of contraction is poor, is preferably provided in the middle part of the angle limb of the surrender section 3-1 of L-type core plate 3 and not to be weakened
Non-compliant section, non-compliant section of 3-3 of intermediate restraint is formed, the length of non-compliant section of 3-3 of intermediate restraint is preferably greater than buckling-restrained branch
The spacing when deformation of design maximum tensile bearing capacity between the first square steel tube 1-1 and the second square steel tube 1-2 occurs for support, to reduce this
Moulding damage all control is surrendered section in constraint, avoided because office occurs to early herein by the stress intensity and damage concentration degree at place
Portion's bending deformation and the big stress and damage concentration formed, cause the premature failure of L-type dissipative cell.
L-type core plate 3 pass through successively include without constraint linkage section 3-2-2, without constraint non-compliant section of 3-2-3,
Constrain non-compliant section of 3-2-4, constraint surrender section, non-compliant section of 3-3 of intermediate restraint, non-compliant section of constraint surrender section, constraint 3-2-
4, without non-compliant section of 3-2-3 of constraint and without constraint linkage section 3-2-2.
In the present invention, outer confining part 2 plays effect of contraction to L-type dissipative cell, and the structure type of outer confining part 2 can be with
There are many, the following are several structure types of outer confining part 2:
Embodiment 1:
As shown in figure 12, outer confining part 2 is formed by four W-shaped steel plate 2-1 snappings, and adjacent W-shaped steel plate 2-1 bolt connects
It connects, eventually forms square tubular structure, be coated on the outside of L-type dissipative cell.Preferably, if the thickness change of L-type core plate 3,
But want using same set of outer confining part, then when can be bolted two-by-two between four W-shaped steel plate 2-1, increases and close
The gasket of suitable thickness, to be applicable in the L-type core plate of different-thickness.
Embodiment 2:
As shown in figure 13, outer confining part 2 is bolted shape by the consistent U-shaped steel plate 2-2 and 2-2 ' of two opening directions
At eventually forming square tubular structure, be coated on the outside of L-type dissipative cell.
Embodiment 3:
As shown in figure 14, outer confining part 2 includes the U-shaped steel plate 2-3 opposite back to two opening directions of setting, U-shaped
There are two steel plate 2-4, two steel plate 2-4 and a pair of U-shaped steel plate 2-3 to form square tubular knot for the side bolt connection of steel plate 2-3
Structure is coated on the outside of L-type dissipative cell.
Embodiment 4:
As shown in figure 15, outer confining part 2 is formed by two U-shaped steel plate 2-5 snappings, bolt at the snapping of U-shaped steel plate 2-5
Connection.
The sequencing of embodiment of above is not only for ease of description, represent the superiority and inferiority of embodiment, in above-described embodiment
Outer confining part 2 is that each section is bolted, easy to disassemble, in addition, outer confining part is long with the design of constraint surrender section
Degree is adapted, it is ensured that constraint surrender section is not stretched out outer under any circumstance (when especially by design maximum tensile bearing capacity)
Confining part.
As an improvement of the present invention, the gap between outer confining part 2 and L-type dissipative cell is 1~5mm, between being somebody's turn to do
It is preferably filled with non-cohesive material in gap, non-cohesive material can be lubricating oil, soft glass or teflon material etc., can also root
According to concrete condition flexible choice, non-cohesive material can reduce L-type consumption in L-type dissipative cell when high-order bending deformation occurs
Frictional force between energy element and interior confining part 1 and outer confining part 2.
As another improvement of the invention, as shown in Figure 10, there are many kinds of the forms of L-type core plate 3, constrains non-compliant section
Transition region between 3-2-4, constraint surrender non-compliant section of 3-3 of section and intermediate restraint can add camber line for camber line, straight line or straight line.
On the other hand, the present invention provides a kind of building, including the above-mentioned buckling-restrained branch containing L-type dissipative cell
Support.Since structure is same as described above, details are not described herein again.
In another aspect, the present invention also provides a kind of assembling sides of above-mentioned buckling restrained brace containing L-type dissipative cell
Method, comprising:
Step 1: by one end of plug connector 1-4 and the first square steel tube 1-1 is welded or grafting (being prefabrication when welding),
The other end is inserted into the second square steel tube 1-2, forms interior confining part 1；
Step 2: the spacing between adjustment the first square steel tube 1-1 and the second square steel tube 1-2, by the nothing of 4 L-type dissipative cells
Constraint linkage section 3-2-2 is bolted on the right-angle side of the first square steel tube 1-1 and the second square steel tube 1-2；
Step 3: L-type dissipative cell cladding being got up using outer confining part 2, and by the component part of outer confining part 2
It is bolted.
Buckling restrained brace containing L-type dissipative cell of the invention, referring to Shanghai City engineering construction standard " skyscraper
Steel Structural Design regulation " (DG/TJ08-32-2008) (the high steel rule in abbreviation Shanghai City), " seismic design provision in building code "
(GB50011-2010) (referred to as anti-rule), Shanghai City building products recommendatory application standard " TJ buckling restrained brace application technology
Regulation " (DBJ/CT105-2011) (abbreviation TJ constraint support regulation) and " building energy-dissipating and shock-absorbing technical regulation " (JGJ297-
2013) (abbreviation damping regulation) is tested for the property test, specific as follows:
Only the anti-rule of a length of L, the high steel rule in Shanghai City and TJ constraint support regulatory requirements successively exist to test specimen for specification definition support
Each 3 strength degradations not generated more than 15% of the displacement amplitude tension and compression of L/300, L/200, L/150 and L/100；Anti- rule, damping
Regulation and TJ constraint support regulatory requirements test specimen recycle 30 intensity not generated more than 15% on the displacement amplitude of L/150 and move back
Change.
Table 1
Table 1 is the basic parameter of the buckling restrained brace containing L-type dissipative cell, this test assumes that constraint surrender section is total
Length is 0.56 times of bearing length L, is successively applied with the load of 30 cycle constant amplitudes and the position that displacement amplitude corresponds to L/150 to test specimen B4
It moves amplitude and is corresponding in turn to L/300, L/200, L/150 and L/100, every grade of 3 weeks amplification load.In constant amplitude load, tensile strength
Degenerating is 3.6%, and it is 5% that compressive strength, which is degenerated, meets the requirement within 15%.In luffing loading procedure, do not occur obvious (super
The strength and stiffness crossed 15%) are degenerated, and code requirement is met.
In table 1, according to the regulation in U.S. norm AISC 341-16 (AISC 2016), the accumulation modeling of each test specimen is calculated
Property deformation (CPD), the suggestion lower limit value that the accumulating plastic deformation of each test specimen provides more than AISC 341-16 (AISC 2016)
200, wherein the CPD of test specimen B4 has reached 2214.
In table 1, maximum pressure Lapie's β value of each test specimen is respectively less than upper limit value 1.3 as defined in AISC 341-16, meets specification
It is required that.
Also, according to test specimen parameter in table 1, obtained hysteresis loop, in Figure 16 (a) to (f) be respectively test specimen B1 extremely
The hysteresis loop of B6, it can be seen that the hysteresis loop of each test specimen is fuller, and there is no complete bucklings, shows
Similar stable Hysteresis Behavior.In addition, the interior confining part and outer confining part in above-mentioned experimental study are in test specimen B1 to B6
Middle recycling does not occur obviously damaging always.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of buckling restrained brace containing L-type dissipative cell, the support as frame structure, which is characterized in that including can
Flexible interior confining part, the outer confining part being set in outside the interior confining part are located at the interior confining part and outer
L-type dissipative cell between confining part, in which:
The interior confining part includes two length and outer cross section size the first square steel tube and the second square steel tube all the same, described
First square steel tube and the second square steel tube plug connection, the end of first square steel tube and the second square steel tube away from each other be used for
Frame structure connection；
The L-type dissipative cell includes 4 L-type core plates, and the both ends of 4 L-type core plates are bolted to the first party respectively
On four right-angle sides of steel pipe and the second square steel tube, the on both sides of the middle of the angle limb of the L-type core plate has grooving/notch, forms quilt
The surrender section of weakening, both ends are non-compliant section not be weakened；
The inner section of the outer confining part be it is rectangular, for being coated on the outside of the L-type dissipative cell, the outer constraint structure
Certain interval is provided between part and the L-type dissipative cell.
2. the buckling restrained brace according to claim 1 containing L-type dissipative cell, which is characterized in that the first party
Steel pipe is identical with second party steel pipe sizes, is connected between first square steel tube and the second square steel tube by plug connector, described to insert
Fitting is square steel tube, circumferentially direction is provided in the middle part of the plug connector and perpendicular to the rib of square steel tube plane, the grafting
The outer cross section size of part is less than the inner section size of first square steel tube, one end of the plug connector and first party steel-pipe welding
Or grafting, the other end are inserted into second square steel tube.
3. the buckling restrained brace according to claim 2 containing L-type dissipative cell, which is characterized in that the first party
The length of steel pipe and the second square steel tube is 100~5000mm, and the spacing between first square steel tube and the second square steel tube is
20~500mm, the gap between the outer wall of the plug connector and the inner wall of the second square steel tube are 1~10mm, and the plug connector is inserted
Enter to the second square steel tube length be 20~800mm.
4. the buckling restrained brace according to claim 2 containing L-type dissipative cell, which is characterized in that described non-compliant
It is provided with the bolt hole connecting with first square steel tube and second party steel pipe on the exterior portion of section, described non-compliant section includes
It is non-compliant without constraining to be provided with coating without constraint linkage section, not set bolt hole and not by the outer confining part for bolt hole
With not set bolt hole and by non-compliant section of constraint of the outer confining part cladding, the outer confining part is coated on described section
It surrenders in section and non-compliant section of constraint, the surrender section is that the constraint constrained by the interior confining part and outer confining part is surrendered
Section.
5. the buckling restrained brace according to claim 4 containing L-type dissipative cell, which is characterized in that the L-type core plate
Lower angle limb on it is described without non-compliant section of constraint on be fixedly installed lift part for lifting the outer confining part；
It is provided with non-compliant section not be weakened in the middle part of the angle limb of the surrender section of the L-type core plate, it is non-in the wrong to form intermediate restraint
Section is taken, the length of non-compliant section of the intermediate restraint is greater than buckling restrained brace and design maximum tensile bearing capacity deformation when institute occurs
State the spacing between the first square steel tube and the second square steel tube.
6. the buckling restrained brace according to claim 5 containing L-type dissipative cell, which is characterized in that the outer constraint
Component is formed by four W-shaped steel plate snappings, adjacent W-shaped steel crab bolt connection；
It is formed alternatively, the outer confining part is bolted by the consistent U-shaped steel plate of two opening directions；
Alternatively, the outer confining part includes the U-shaped steel plate opposite back to two opening directions of setting, the U-shaped steel plate
There are two steel plates for side bolt connection；
Alternatively, the outer confining part is formed by two U-shaped steel plate snappings, which is bolted two-by-two.
7. the buckling restrained brace containing L-type dissipative cell stated according to claim 6, which is characterized in that the outer constraint structure
Gap between part and the L-type dissipative cell is 1~5mm, is filled with non-cohesive material in the gap.
8. the buckling restrained brace according to claim 7 containing L-type dissipative cell, which is characterized in that the constraint is non-
Transition region between surrender section, constraint surrender section and non-compliant section of intermediate restraint is that camber line, straight line or straight line add camber line.
9. a kind of building, which is characterized in that about including any buckling containing L-type dissipative cell of claim 1-8
Bundle branch support.
10. the assemble method of the buckling restrained brace according to any one of claims 8 containing L-type dissipative cell, which is characterized in that packet
It includes:
Step 1: by one end of the plug connector and first party steel-pipe welding or grafting, the other end is inserted into the second square steel tube,
Form the interior confining part；
Step 2: the spacing between the first square steel tube of adjustment and the second square steel tube, by being connected without constraint for the L-type dissipative cell
Section is bolted on the right-angle side of the first square steel tube and the second square steel tube；
Step 3: L-type dissipative cell cladding being got up using outer confining part, and by the component part spiral shell of outer confining part
It tethers and connects.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610892.0A CN107288399B (en) | 2017-07-25 | 2017-07-25 | Buckling restrained brace, building and assemble method containing L-type dissipative cell |
| US16/488,830 US10988952B2 (en) | 2017-07-25 | 2018-06-26 | Buckling-restrained brace containing L-shaped energy dissipation element, building and assembly method |
| PCT/CN2018/092742 WO2019019850A1 (en) | 2017-07-25 | 2018-06-26 | Buckling restrained brace having l-shaped energy-dissipation element, building, and assembling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610892.0A CN107288399B (en) | 2017-07-25 | 2017-07-25 | Buckling restrained brace, building and assemble method containing L-type dissipative cell |
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| Publication Number | Publication Date |
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| CN107288399A CN107288399A (en) | 2017-10-24 |
| CN107288399B true CN107288399B (en) | 2019-05-10 |
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| CN201710610892.0A Active CN107288399B (en) | 2017-07-25 | 2017-07-25 | Buckling restrained brace, building and assemble method containing L-type dissipative cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10988952B2 (en) | 2017-07-25 | 2021-04-27 | Shandong University | Buckling-restrained brace containing L-shaped energy dissipation element, building and assembly method |
| CN111519782A (en) * | 2020-05-07 | 2020-08-11 | 山东天元建设机械有限公司 | Pure steel type buckling restrained brace |
Citations (5)
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|---|---|---|---|---|
| CN201377126Y (en) * | 2009-03-30 | 2010-01-06 | 东南大学 | Energy consumer with stable energy consumption capability |
| CN201687219U (en) * | 2010-05-31 | 2010-12-29 | 哈尔滨工业大学 | Self-resetting anti-bending bracing member |
| CN202416619U (en) * | 2011-12-23 | 2012-09-05 | 卢锐 | Buckling-preventive energy-dissipating supporting device of building frame structure |
| CN204626690U (en) * | 2015-05-12 | 2015-09-09 | 郑州大学 | The double steel tube anti-flex of Self-resetting supports |
| CN206957320U (en) * | 2017-07-25 | 2018-02-02 | 山东大学 | Buckling restrained brace and building containing L-type dissipative cell |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9896837B2 (en) * | 2014-01-28 | 2018-02-20 | Thor Matteson | Fail-soft, graceful degradation, structural fuse apparatus and method |
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2017
- 2017-07-25 CN CN201710610892.0A patent/CN107288399B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377126Y (en) * | 2009-03-30 | 2010-01-06 | 东南大学 | Energy consumer with stable energy consumption capability |
| CN201687219U (en) * | 2010-05-31 | 2010-12-29 | 哈尔滨工业大学 | Self-resetting anti-bending bracing member |
| CN202416619U (en) * | 2011-12-23 | 2012-09-05 | 卢锐 | Buckling-preventive energy-dissipating supporting device of building frame structure |
| CN204626690U (en) * | 2015-05-12 | 2015-09-09 | 郑州大学 | The double steel tube anti-flex of Self-resetting supports |
| CN206957320U (en) * | 2017-07-25 | 2018-02-02 | 山东大学 | Buckling restrained brace and building containing L-type dissipative cell |
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