CN110005091A - A kind of hinged low damage Self-resetting shear wall in bottom - Google Patents
A kind of hinged low damage Self-resetting shear wall in bottom Download PDFInfo
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- CN110005091A CN110005091A CN201910233010.2A CN201910233010A CN110005091A CN 110005091 A CN110005091 A CN 110005091A CN 201910233010 A CN201910233010 A CN 201910233010A CN 110005091 A CN110005091 A CN 110005091A
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- articulated joint
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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
Abstract
It include: reinforced concrete wall panel, Self-resetting wall bottom, foundation beam the present invention relates to a kind of hinged low damage Self-resetting shear wall in bottom；Reinforced concrete wall panel is connect with Self-resetting wall bottom upper end, and end connects under foundation beam and Self-resetting wall；Foundation beam upper surface middle part is equipped with connecting plate, and connecting plate is equipped with attachment beam articulated joint, and attachment beam articulated joint two sides are respectively equipped with the short support articulated joint II of Self-resetting；Self-resetting wall bottom includes: attachment beam, the short support of Self-resetting；Attachment beam upper surface is equipped with shear key, is equipped with foundation beam articulated joint in the middle part of lower surface, lower surface both ends position corresponding with the short support articulated joint II of two Self-resettings is respectively equipped with the short support articulated joint I of Self-resetting；The short support of Self-resetting includes inner tube, outer tube, disc spring, baffle；Disc spring is placed in outer tube, and disc spring both ends are equipped with baffle, and inner tube by block is bound across the inner hole of disc spring and two end-stopping plates and at inner tube both ends, and the short support both ends of Self-resetting are equipped with the short support articulated joint III of Self-resetting.
Description
Technical field
The invention belongs to building structure technology fields, are related to a kind of shear wall with runback bit function, and in particular to one
The armored concrete of assembling production with reset capability of the kind comprising concrete, reinforcing bar, fashioned iron and Self-resetting support is cut
Power wall.
Background technique
Earthquake is one of the Major Natural Disasters that mankind nowadays society faces, and has sudden strong, destructive big, social shadow
Ring it is far-reaching and the characteristics of secondary disaster can be caused, be easy to cause casualties, building collapsing, traffic paralysis, communicating interrupt and
Lifeline engineering is destroyed.Traditional method of seismic design theory is to protect life as primary goal, and structure is by generation plastic deformation and not
The mode of reversible damage realizes Ductility Design, and such method effectively reduces or remits casualties and building collapsing, but structure by
The serious significant residual deformation damaged and generated still structure function is caused to be interrupted, need high cost reparation for a long time even to rebuild
It could restore functional requirement, to social bring economic loss and influence still heavy.In recent years, reparation or letter are not required to after shake
Single reparation can restore structure and be increasingly becoming earthquake engineering circle using function restorability (resilient) design concept of function
Focus of attention.Replaceable design concept and Self-resetting design concept can realize respectively structure damageable zone periodical replacement and
Non-destructive deformation realizes the function restorability in structure or even city so that can use function by quick-recovery fastly after structure shake.At present
Function can restore structure or component have self-resetting swinging wall, self-resetting swinging frame, Self-resetting support, re-centring damper,
Replaceable coupling beam and replaceable foundation shear wall etc..
Reinforced concrete shear wall lateral rigidity is big, bearing capacity is high, is widely used in high-rise super high rise structure.But because of concrete
Material fragility is obvious, and when moderate finite deformation occurs for structure, wall bottom foundation conquassation easily occurs, forms the problems such as plastic hinge, causes
Residual deformation is significant, causes structure function to lose and even collapses.Fashioned iron, steel are added in conventional concrete shear wall edge constraint area
Concrete shear force wall is combined in the formation such as pipe or dark support, and bearing capacity, lateral rigidity and ductility are improved, but still not can avoid wall
Body plastic failure, cannot achieve shearing wall function can restore.Currently, function, which can restore concrete shear force wall mainly, has prestressing force certainly
Two kinds of forms of concrete shear force wall and replaceable foundation shear wall of reset.Prestressing force automatic reset concrete shear wall is by putting a wall
Bottom and basic linkage interface, within the walls setting are anchored in the post-tensioning unbonded prestressing tendon on basis, and the separation on wall and basis can be with
Realize that wallboard rigid deformation reduces damage of wall, the setting of presstressed reinforcing steel provides recovery power drive wall in deformation and resets.But
This kind of wall vertical bearing capacity be not high, lateral stability is poor and lateral deformation is significant, often cooperates with frame, maxi-mum height
It is limited and is not suitable for shear wall structure.Replaceable foundation shear wall is directed to traditional wall rapid wear foundation and carries out replaceable set
Meter, concentrates on replaceable region for the plastic failure during deformation of wall, is realized after shake by the replacement in replaceable region
The quick reparation of structure function.But the wall section is weakened, and reduces bearing capacity and lateral stability.
Summary of the invention
The present invention is that foundation is easily crushed, wall bottom easily forms plastic hinge and ductility not when solving the deformation of conventional concrete shear wall
Foot, prestressing force automatic reset concrete shear wall bearing capacity is not high and pretension easily loses, and replaceable foundation shear wall bearing capacity is not
The problems such as high and residual deformation is significant proposes that a kind of wall bottom is hinged and it is mixed to be able to achieve the Self-resetting of largely flexible deformation
Solidifying soil shear wall.To improve structural behaviour level, the present invention can seriously destroy traditional shear wall when by Giant Bullous
Wall bottom point carry out Self-resetting design, construct the runback with moderate finite deformation ability by section steel beam and Self-resetting support combinations
Position section, and connect with reinforced concrete wall panel and foundation beam, form automatic reset concrete shear wall.Big using disc spring rigidity,
There is the Self-resetting of bilinearity hysteretic characteristic to support for the characteristics design such as bearing capacity height and using flexible.Fashioned iron top surface of the beam and wallboard connect
It connects, hinged with foundation beam in the middle part of beam, then at both ends arrangement Self-resetting support, being formed, there is the rotation of bilinearity hysteretic characteristic to cut
Face has so that concrete shear force wall without obvious Plastic Damage and is able to achieve reset in generation larger lateral deformation rear wall plate bottom
Body technique scheme is as follows:
A kind of hinged low damage Self-resetting shear wall in bottom include: reinforced concrete wall panel 1-1, Self-resetting wall bottom 1-2 and
Foundation beam 1-3；
The reinforced concrete wall panel 1-1 is connect with the upper end of Self-resetting wall bottom 1-2, foundation beam 1-3 and Self-resetting wall bottom
The lower end of 1-2 connects；
The reinforced concrete wall panel 1-1 is designed according to current specifications, and assembling reinforcement net after-pouring concrete is made, described
Reinforced concrete wall panel 1-1 includes edge constraint component and unconstrained area, arranges vertical applied force in the edge constraint component
Reinforcing bar and intensive stirrup, in unconstrained area's arrangement vertical applied force reinforcing bar and horizontal distribution muscle；
The foundation beam 1-3 upper surface middle part is equipped with connecting plate, and connecting plate is equipped with attachment beam articulated joint 3-2, described
The two sides attachment beam articulated joint 3-2 are respectively equipped with short II 3-3 of support articulated joint of Self-resetting；
Self-resetting wall bottom 1-2 includes: attachment beam 2-1, the short support 4-4 of two Self-resettings；
The upper surface of the attachment beam 2-1 is equipped with several shear key 2-5, is equipped with foundation beam articulated joint 2- in the middle part of lower surface
2, lower surface both ends position corresponding with short II 3-3 of support articulated joint of two Self-resettings is respectively equipped with the short support hinge of Self-resetting
I 2-3 of connector；
The short support 4-4 of Self-resetting includes inner tube 4-2, outer tube 4-1, disc spring 4-5 and baffle 4-3；The disc spring 4-5 is set
In outer tube 4-1, the both ends disc spring 4-5 are respectively equipped with baffle 4-3, and said inner tube 4-2 passes through the inner hole and two end-stopping plates of disc spring 4-5
4-3 is simultaneously bound at the both ends inner tube 4-2 by block, and it is hinged that the both ends of the short support 4-4 of Self-resetting are equipped with the short support of Self-resetting
III 4-6 of connector；
Short III 4-6 of support articulated joint of Self-resetting of the short support one end 4-4 of described two Self-resettings respectively with attachment beam 2-1
Short I 2-3 of support articulated joint of the Self-resetting at both ends is hinged, the short branch of Self-resetting of described two short support 4-4 other ends of Self-resetting
It is hinged with short II 3-3 of support articulated joint of two Self-resettings on foundation beam 1-3 respectively to support III 4-6 of articulated joint.
The foundation beam articulated joint 2-2 and attachment beam articulated joint 3-2 are hinged；
The upper surface of the attachment beam 2-1 is contacted with reinforced concrete shear wall plate 1-1, and several shear key 2-5 are buried
Enter inside reinforced concrete shear wall plate 1-1, the reinforced concrete shear wall plate 1-1 inner horizontal distributing reinforcement and vertical applied force
Steel bar end is welded on the upper surface attachment beam 2-1, and several shear key 2-5 are used for: the cementitiousness of enhancing and concrete；
On the basis of above scheme, the attachment beam 2-1 can be fabricated to horizontal or V-type, the reinforced concrete wall
Plate 1-1 bottom shape is poured according to attachment beam 2-1 shape builds up horizontal or V-type；
On the basis of above scheme, the strength grade of concrete that the reinforced concrete wall panel 1-1 is used is not less than
C30, steel bar stress use the reinforcing bar not less than HRB335, and stirrup is not less than HPB300, and specific design can be according to current specifications spirit
It is living to choose；
On the basis of above scheme, the carbon of Q235 grade B, C, D is can be used in the attachment beam 2-1 and foundation beam 1-3
The low-alloy high-tensile structural steel of structural steel and Q345 grade B, C, D, E, can also when guaranteeing toughness reguirements using intensity and just
Spend higher steel grade；
On the basis of above scheme, common carbon is can be used in the inner tube 4-2 and outer tube 4-1 of the short support 4-4 of Self-resetting
Plain structural steel Q235 steel；Disc spring 4-5 uses the hot rolling spring steel trade mark for 60CrMnA, and low-alloy high-strength knot can be used in baffle 4-3
Structure steel Q345 steel.
It is settable between the attachment beam 2-1 and foundation beam 1-3 of the Self-resetting wall bottom 1-2 on the basis of above scheme
Damper is set as Self-resetting energy consumption wall bottom.
The top surface attachment beam 2-1 in Self-resetting wall bottom 1-2 is connect with reinforced concrete wall panel 1-1, is stablized effectively
Wall top internal force is transmitted to foundation beam 1-3, horizontal distribution muscle and vertical applied force reinforcement welding in reinforced concrete wall panel 1-1
Steel mesh in attachment beam 2-1 and reinforced concrete wall panel 1-1 is set to form one in the top surface attachment beam 1-3, the top surface attachment beam 2-1 is set
Some shear key 2-5 can reinforce the bonding with concrete.Reinforced concrete wall panel 1-1 bottom shape can be according to attachment beam 2-1 shape
Longitudinal joint pouring is at horizontal or V-type, and V-type joint face has bigger bond area, and internal force transmitting is more stable effectively, and V-type is replaced
Region more meets conventional wallboard damage inactivation mode, avoids what the horizontal connecting surface easily two sides in wall big displacement were destroyed
Problem.Hinged, it can be achieved that wall rotates to a certain degree with foundation beam 1-3 in the middle part of attachment beam 2-1, wall axial compressive force and level are cut
Power is transferred to foundation beam 1-3 by connecting hinge.It is short that the two sides attachment beam 2-1 are vertically arranged the Self-resetting with bilinearity hysteretic characteristic
4-4 is supported, the connector that the short support both ends 4-4 of Self-resetting are reserved with attachment beam 2-1 and foundation beam 1-3 respectively is hinged.Foundation beam 1-3
It is made of steel, concrete can also be embedded in and form steel-concrete composite beam.It reserves and Self-resetting short branch the top surface foundation beam 1-3
The connector that support 4-4 is connected with attachment beam 2-1, and rigidity and bearing capacity at reinforced joint, avoid local buckling.Attachment beam 2-1, from
Reset short support 4-4 and the connecting pin foundation beam 1-3 form the bending resistance wall bottom with bilinearity hysteretic characteristic, when wall thin tail sheep from
It is big to reset wall bottom 1-2 rigidity, structure lateral rigidity is effectively provided；When wall displacement increases, Self-resetting wall bottom 1-2 elastic rotation,
Rigidity does not decline；Wall displacement is when increasing again, and Self-resetting wall bottom 1-2 enters the second stiffness stage, in attachment beam 2-1 upper wall body
Power increases unobvious；When external loads reduce, Self-resetting wall bottom 1-2 sets back, and driving wall resets, and realizes the low damage of wall
Hurt large deformation and resets.The short support 4-4 stroke of Self-resetting of the Self-resetting wall bottom two sides 1-2 arrangement meets wall rotation demand, even
It meets beam 2-1 and meets Self-resetting wall bottom 1-2 in the 1-2 rotation process of Self-resetting wall bottom with foundation beam 1-3 rigidity and do not fail.It can be in runback
Damper is arranged between the attachment beam 2-1 and foundation beam 1-3 of position wall bottom 1-2, is set as Self-resetting energy consumption wall bottom.
The short support 4-4 of Self-resetting includes inner tube 4-2, outer tube 4-1, disc spring 4-5 and baffle 4-3.Disc spring 4-5 is two after precompressed
End plus baffle 4-3 be limited in inner tube 4-2, outer tube 4-1, inner tube 4-2 across disc spring 4-5 inner hole and two side baffle 4-3 and
End welding block binds.The short support 4-4 of Self-resetting disc spring 4-5 in by axial push-pull power deformation process is in compression always
State.When supporting axial load level low, the short support 4-4 of Self-resetting is in the first stiffness stage, by inner tube 4-2, outer tube 4-1
It is common that rigidity is provided；When xial feed is more than disc spring 4-5 precompression, the changing of the relative positions, the short branch of Self-resetting occur for inner tube 4-2, outer tube 4-1
It supports 4-4 and enters the second stiffness stage；When external load level reduces, disc spring 4-5 provides reset force and pushes inner tube 4-2, outer tube 4-1 extensive
Multiple original state.
The realization situation of the hinged low damage Self-resetting shear wall in bottom shown in the present invention is as follows: in application, needing by design
Production attachment beam 2-1, foundation beam 1-3 and the short support 4-4 of Self-resetting are asked, is assembled in the wall bottom position of reinforced concrete wall panel 1-1
It is welded at Self-resetting wall bottom 1-2, assembling reinforcement and with the top attachment beam 2-1, last casting concrete.In addition, wall can carry out
It is transported to construction site after the factorial production to assemble, is connected with the reinforced concrete wall panel 1-1 and foundation beam 1- of foundation beam 1-3
3 can be prefabricated in factory's difference, and construction site positions reinforced concrete wall panel 1-1, foundation beam 1-3 and the short support 4-4 of Self-resetting
It connects afterwards.
Under normal operating condition, wall undertakes vertical load and smaller horizontal loading, and load is by reinforced concrete wall panel
1-1 is transferred to foundation beam 1-3 through attachment beam 2-1, and hinge bears the axle power and shearing of reinforced concrete wall panel 1-1 transmitting, and two sides are certainly
Reset the moment of flexure that short support 4-4 axle power composition couple of force undertakes reinforced concrete wall panel 1-1 transmitting.When structure is by earthquake load
When, shear wall lateral deformation aggravation, the Self-resetting wall bottom section 1-2 rotates.When wall displacement is smaller, Self-resetting wall bottom 1-
2 rotations are smaller, and support axial deformation is smaller, and the short support 4-4 of Self-resetting is in the first stiffness stage, Self-resetting wall bottom 1-2 at this time
In the first stiffness stage, it is effective against structure lateral deformation；Wall sidesway, which continues to increase to traditional shear wall, has occurred foundation
When conquassation wall bottom goes out hinge degree, Self-resetting wall bottom 1-2 rotation increases, and support axial deformation increases, but Self-resetting wall bottom 1-2 is in
Elastic stage, wall do not generate obvious Plastic Damage；Wall sidesway increases again, and Self-resetting wall bottom 1-2 rotation increases again, support shaft
Increase again to displacement, the short support 4-4 of Self-resetting enters the second stiffness stage, and Self-resetting wall bottom 1-2 enters the second stiffness stage, interior
Power increase is not significant, and upper reinforcement concrete panel 1-1 internal force no longer obviously increases, and reinforced concrete wall panel 1-1 is not broken
It is bad.When earthquake weakens, earthquake load disappears, and disc spring 4-5 pushes the short support 4-4 of inner and outer pipes driving Self-resetting to reset, Self-resetting
Wall bottom 1-2 restores initial position under the short support 4-4 effect of Self-resetting, and driving reinforced concrete wall panel 1-1 restores initial position,
Realize the reset of shear wall.
Meanwhile damper can be arranged between attachment beam 2-1 and foundation beam 1-3 according to design requirement, utilize wall sidesway
The displacement that attachment beam 2-1 rotation generates in the process activates damper, and dissipation inputting seismic energy protects structure.
The invention has the advantages that:
The concrete such as the hinged low damage Self-resetting shear wall in bottom and conventional concrete shear wall, built-in profile steel and dark support are cut
It power wall, prestressing force automatic reset concrete shear wall and is compared with replaceable foundation shear wall, there is following characteristics:
Compared with conventional concrete shear wall, the hinged low damage Self-resetting shear wall in bottom by traditional shear wall by compared with
The wall bottom that plastic failure can occur when violent earthquake load replaces with the Self-resetting wall bottom with bilinearity hysteretic characteristic, it can be achieved that certainly
The larger flexible deformation at wall bottom is resetted, and when wall sidesway is larger, Self-resetting wall bottom enters the second stiffness stage, guarantees certainly
It resets wall basal cross section internal force not increase sharply, guarantees that upper reinforcement concrete panel internal force level no longer improves, so that shear wall is whole
Serious Plastic Damage does not occur down to damage inactivation.Traditional shear wall has apparent residual deformation after earthquake load disappears, and
The hinged low damage Self-resetting shear wall in bottom can be achieved to reset under the driving at Self-resetting wall bottom, without residual deformation.
Compared with the concrete shear force walls such as built-in profile steel and dark support, the design of wall stiffness and bearing capacity is not only restricted to wall bottom
Concrete material characteristic；Self-resetting wall bottom with bilinearity hysteretic characteristic assigns the better ductility of shear wall；With bilinearity
The reseting performance at hysteretic characteristic wall bottom makes shear wall not generate residual deformation, is able to achieve wall reset.
Compared with prestressing force automatic reset concrete shear wall, there is higher vertical bearing capacity；With it is bigger it is lateral just
Degree；Presstressed reinforcing steel loss of prestress bring reseting performance is avoided to decline problem；Foundation destruction will not occur；Lateral stability is more
It is good.
Compared with replaceable foundation shear wall, there is higher vertical and horizontal bearing capacity；With it is bigger it is lateral just
Degree；Residual deformation is not generated, it can be achieved that wall resets；Degree of injury is low, is not required to repair after shake.
Detailed description of the invention
The present invention has following attached drawing:
Fig. 1 is the structural schematic diagram of the hinged low damage Self-resetting shear wall in bottom of the present invention；
Fig. 2 is the structural schematic diagram of attachment beam of the present invention；
Fig. 3 is the structural schematic diagram of foundation beam of the present invention；
Fig. 4 is the schematic diagram of the section structure of the short support of Self-resetting of the present invention.
Appended drawing reference
1-1 reinforced concrete wall panel, 1-2 Self-resetting wall bottom, 1-3 foundation beam, 2-1 attachment beam, 2-2 foundation beam hingedly connect
Head, the short support articulated joint I of 2-3 Self-resetting, 2-5 shear key, 3-2 attachment beam articulated joint, the short support of 3-3 Self-resetting hingedly connect
First II, 4-1 outer tube, 4-2 inner tube, 4-3 baffle, the short support of 4-4 Self-resetting, 4-5 disc spring, the short support articulated joint of 4-6 Self-resetting
Ⅲ。
Specific embodiment
Below in conjunction with attached drawing 1~4, invention is further described in detail.
The present invention is a kind of hinged low damage Self-resetting shear wall in bottom, and structural schematic diagram of the invention is as shown in Figure 1, institute
Stating the hinged low damage Self-resetting shear wall in bottom includes reinforced concrete wall panel 1-1, Self-resetting wall bottom 1-2 and foundation beam 1-3.Institute
Stating reinforced concrete wall panel 1-1 can design according to current specifications, and assembling reinforcement net after-pouring concrete is made.Foundation beam 1-3 exists
Meet and steel or concrete material production can be used under conditions of anchoring requires.Self-resetting wall bottom 1-2 include attachment beam 2-1, from
Reset short support 4-4；
Attachment beam 2-1 is as shown in Fig. 2, attachment beam 2-1 is used to bearing and transmitting what upper reinforcement concrete panel 1-1 was transmitted
Internal force, and need the validity that enough rigidity keeps Self-resetting wall bottom 1-2 mechanism；Basis in the middle part of the lower surface attachment beam 2-1
Beam articulated joint 2-2 is connect with the attachment beam articulated joint 3-2 on foundation beam 1-3, which is used for effectively stable transmitting steel
Reinforced concrete wallboard 1-1 axial compressive force and horizontal shear；Short I 2-3 of support articulated joint of Self-resetting is for connecting the short branch of Self-resetting
The top 4-4 is supportted, undertakes and transmit reinforced concrete wall panel 1-1 by the bending resistance couple of force that the short support 4-4 of the Self-resetting of two sides is formed
Moment of flexure；Steel bar end inside reinforced concrete wall panel 1-1 is adhered in the top surface attachment beam 2-1, and shear key 2-5 gos deep into concrete enhancing and connects
It meets beam 2-1 and reinforced concrete wall panel 1-1 to bond, guarantees the stable delivery of linkage interface internal force.Foundation beam 1-3 as shown in figure 3,
Foundation beam 1-3 is used to bear the wall internal force of Self-resetting wall bottom 1-2 transmitting, and enough rigidity is needed to guarantee Self-resetting wall bottom mechanism
Validity；The attachment beam articulated joint 3-2 connecting with attachment beam 2-1 is for bearing wall axial compressive force and horizontal shear and guarantor
Local yielding does not occur for card；Short II 3-3 of support articulated joint of Self-resetting connecting with the short support lower part 4-4 of Self-resetting need to have enough
Rigidity and bearing capacity undertake Self-resetting wall bottom 1-2 deformation range inner support axial force.The runback that Self-resetting wall bottom 1-2 is used
The short support 4-4 in position after disc spring 4-5 foundation design selection suitable types disc spring through series-parallel combine as shown in figure 4, stack, both ends cloth
Baffle 4-3 is set, the inner tube 4-2 of the short support 4-4 of Self-resetting passes through the inner hole of baffle 4-3 and disc spring 4-5, by compressing baffle 4-3
Certain precompression is applied to disc spring 4-5, the welding end inner tube 4-2 is bound, and limitation disc spring 4-5 rebound is maintained at preloading condition, then
In disc spring 4-5 and inner tube 4-2 outer cover upper exterior tube 4-1, the short support 4-4 of Self-resetting is made.The short support 4-4 of Self-resetting has two-wire
Property hysteretic characteristic, by Self-resetting it is short support 4-4 inner tube 4-2 and outer tube 4-1 provide the first rigidity, as the short support 4-4 of Self-resetting
Xial feed reach inner and outer pipes 4-1 after disc spring 4-5 precompression and start the changing of the relative positions, push-pull plate 4-3 squeezes disc spring 4-5, Self-resetting
Short support 4-4 enters the second stiffness stage, and the second rigidity is provided by disc spring 4-5.Self-resetting wall bottom 1-2 is intended to traditional shear wall
Selected layer shear wall wall bottom can be replaced by hinge partial replacement at Hookean region out, can also be only at the biggish structure bottom of stress
Portion carries out the replacement of wall bottom.1-2 section stiffness design in Self-resetting wall bottom will cooperate reinforced concrete wall panel 1-1 section stiffness, avoid
The rigidity of structure is mutated to form weak floor.
The realization process of the hinged low damage Self-resetting shear wall in bottom shown in the present invention is as follows: in application, needing by design
The production short support 4-4 of Self-resetting is sought, arranges foundation beam 1-3, attachment beam 2-1 and the short support 4-4 of Self-resetting simultaneously at the bottom of the shear wall
It is assembled, then banding steel cage, linkage interface steel bar end is welded at the top of attachment beam 2-1, formwork supporting plate finally pours mixed
Solidifying soil, forms demoulding.According to assembled production method, it is connected with reinforced concrete wall panel 1-1, the Self-resetting of attachment beam 2-1
Short support 4-4 and foundation beam 1-3 can carry out prefabrication respectively, then transport to live location and installation.
Under normal operating condition, shear wall bears structure vertical load and smaller horizontal loading, upper reinforcement concrete
Wallboard 1-1 hold but axial compressive force and horizontal shear through concrete, steel mesh and shear key 2-5 act on attachment beam 2-1, pass through
Shear wall axle power and shearing are reached foundation beam 3-1 by foundation beam articulated joint 2-2.The short support 4-4 of two sides Self-resetting and attachment beam
2-1 and the connecting pin foundation beam 1-3 form the Self-resetting wall bottom 1-2 with bilinearity hysteretic characteristic.In reinforced concrete wall panel 1-1
Moment of flexure attachment beam 2-1 is acted on by linkage interface, around foundation beam articulated joint 2-2 certain rotation occurs for attachment beam 2-1, right
The wall bottom two sides short support 4-4 of Self-resetting acts on axial force respectively, and the short support 4-4 deformation of Self-resetting generates resistance, forms bending resistance
Couple of force undertakes the moment of flexure of reinforced concrete wall panel 1-1 effect.The short support 4-4 of Self-resetting is again by the Moment of receiving in basis
Beam 1-3 reaches foundation beam 1-3.
When structure is by earthquake load process, horizontal loading increases within the walls, and lateral deformation increases, upper reinforcement concrete
The internal force that wallboard 1-1 is transferred to Self-resetting wall bottom 1-2 increases.Axle power and horizontal shear pass through base in reinforced concrete wall panel 1-1
Plinth beam articulated joint 2-2 is transferred to foundation beam 1-3.Attachment beam 2-1 increases around hinge rotational deformation, the short support of wall bottom two sides Self-resetting
4-4 axial deformation increases, and the short support 4-4 power output of Self-resetting increases, and the short support 4-4 of Self-resetting is in the first stiffness stage, runback
Position wall bottom 1-2 was in for the first rotational stiffness stage, was effective against wall lateral rotation.Horizontal loading continues to increase, and wall is lateral
Deformation continues to increase, and Self-resetting wall bottom 1-2 increases around foundation beam articulated joint 2-2 rotation amplitude, the short support 4-4 of two sides Self-resetting
Axial deformation increases, when the short support 4-4 axial push-pull power of Self-resetting reaches disc spring 4-5 precompression, inner tube 4-2 and outer tube 4-1
Start the changing of the relative positions, the short support 4-4 of Self-resetting enters the second stiffness stage, and Self-resetting wall bottom 1-2 enters the second stiffness stage, Self-resetting
Wall bottom 1-2 reaches yield point, shear wall Stiffness.When wall lateral displacement at this time continues to increase, Self-resetting wall bottom 1-2 institute energy
The moment of flexure increase of receiving is not significant, top concrete reinforcement concrete panel 1-1 internal force can be made not increase sharply, concrete does not occur bright
Aobvious plastic deformation generates destruction, and wall entirety level of damage is low.When horizontal loading weaken when, Self-resetting wall bottom 1-2 two sides from
Recovery deforms under the action of resetting short support 4-4 elastic restoring force, and upper reinforcement concrete panel 1-1 restoring force is given in effect, drives
Dynamic wall restores initial position, does not generate residual deformation, realizes that wall resets.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (6)
1. a kind of hinged low damage Self-resetting shear wall in bottom characterized by comprising reinforced concrete wall panel (1-1), runback
Position wall bottom (1-2) and foundation beam (1-3)；
The reinforced concrete wall panel (1-1) connect with the upper end at Self-resetting wall bottom (1-2), foundation beam (1-3) and Self-resetting wall
The lower end at bottom (1-2) connects；
The reinforced concrete wall panel (1-1) is designed according to current specifications, and assembling reinforcement net after-pouring concrete is made, the steel
Reinforced concrete wallboard (1-1) includes edge constraint component and unconstrained area, arranges vertical applied force in the edge constraint component
Reinforcing bar and intensive stirrup, in unconstrained area's arrangement vertical applied force reinforcing bar and horizontal distribution muscle；
Foundation beam (1-3) upper surface middle part is equipped with connecting plate, and connecting plate is equipped with attachment beam articulated joint (3-2), described
The two sides attachment beam articulated joint (3-2) are respectively equipped with the short support articulated joint II (3-3) of Self-resetting；
Self-resetting wall bottom (1-2) includes: attachment beam (2-1), the short support (4-4) of two Self-resettings；
The upper surface of the attachment beam (2-1) is equipped with several shear keies (2-5), and foundation beam articulated joint is equipped in the middle part of lower surface
(2-2), it is short that lower surface both ends position corresponding with the short support articulated joint II (3-3) of two Self-resettings is respectively equipped with Self-resetting
It supports articulated joint I (2-3)；
The short support (4-4) of Self-resetting includes inner tube (4-2), outer tube (4-1), disc spring (4-5) and baffle (4-3)；The dish
Spring (4-5) is placed in outer tube (4-1), and the both ends disc spring (4-5) are respectively equipped with baffle (4-3), and said inner tube (4-2) passes through disc spring
The inner hole of (4-5) and two end-stopping plates (4-3) are simultaneously bound at the both ends inner tube (4-2) by block, the short support (4-4) of Self-resetting
Both ends be equipped with the short support articulated joint III (4-6) of Self-resetting；
The short support articulated joint III (4-6) of Self-resetting of the short support one end (4-4) of described two Self-resettings respectively with attachment beam (2-
1) the short support articulated joint I (2-3) of the Self-resetting at both ends hingedly, the runback of short support (4-4) other ends of described two Self-resettings
Short support articulated joint III (4-6) in position is cut with scissors with the short support articulated joint II (3-3) of two Self-resettings on foundation beam (1-3) respectively
It connects；
The foundation beam articulated joint (2-2) and attachment beam articulated joint (3-2) are hinged；
The upper surface of the attachment beam (2-1) is contacted with reinforced concrete shear wall plate (1-1), several shear keies (2-5)
Be embedded to reinforced concrete shear wall plate (1-1) it is internal, reinforced concrete shear wall plate (1-1) the inner horizontal distributing reinforcement and perpendicular
The upper surface attachment beam (2-1) is welded on to the end of steel bar stress.
2. the hinged low damage Self-resetting shear wall in bottom as described in claim 1, which is characterized in that the attachment beam (2-1)
For horizontal or V-type, reinforced concrete wall panel (1-1) bottom shape is poured according to attachment beam (2-1) shape builds up horizontal or V
Type.
3. the hinged low damage Self-resetting shear wall in bottom as described in claim 1, which is characterized in that the reinforced concrete wall
The strength grade of concrete that plate (1-1) uses is not less than C30, and steel bar stress uses the reinforcing bar not less than HRB335, and stirrup is not low
In HPB300.
4. the hinged low damage Self-resetting shear wall in bottom as described in claim 1, which is characterized in that the attachment beam (2-1)
Using the structural carbon steel of Q235 grade B, C, D；The foundation beam (1-3) uses the low-alloy high-strength of Q345 grade B, C, D, E
Spend structural steel.
5. the hinged low damage Self-resetting shear wall in bottom as described in claim 1, which is characterized in that the short support of Self-resetting
The inner tube (4-2) and outer tube (4-1) of (4-4) use common carbon structural steel Q235 steel；Disc spring (4-5) uses hot rolling spring steel board
Number be 60CrMnA, baffle (4-3) use low-alloy high-tensile structural steel Q345 steel.
6. the hinged low damage Self-resetting shear wall in bottom as described in claim 1, which is characterized in that Self-resetting wall bottom
Damper is set between the attachment beam (2-1) and foundation beam (1-3) of (1-2), is set as Self-resetting energy consumption wall bottom.
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| CN201910233010.2A CN110005091B (en) | 2019-03-26 | 2019-03-26 | Bottom hinged low-damage self-resetting shear wall |
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| CN201910233010.2A CN110005091B (en) | 2019-03-26 | 2019-03-26 | Bottom hinged low-damage self-resetting shear wall |
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Cited By (6)
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| CN110552438A (en) * | 2019-07-25 | 2019-12-10 | 宁波工程学院 | energy dissipation coupling beam device with self-resetting capability and shear wall structure |
| CN110552439A (en) * | 2019-07-25 | 2019-12-10 | 宁波工程学院 | One-way energy consumption device with self-resetting capability and shear wall |
| CN111636561A (en) * | 2020-04-27 | 2020-09-08 | 北京交通大学 | Plug-in type modular steel structure connecting node with reset function |
| CN112814195A (en) * | 2021-01-05 | 2021-05-18 | 北京交通大学 | Self-resetting reinforced concrete shear wall based on viscoelastic energy consumption |
| CN113235771A (en) * | 2021-05-26 | 2021-08-10 | 华能秦煤瑞金发电有限责任公司 | Easily repaired assembled shear wall |
| CN113530331A (en) * | 2021-07-19 | 2021-10-22 | 重庆大学 | Self-reset module, frame structure with self-reset module and assembling method |
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| CN202925717U (en) * | 2012-11-14 | 2013-05-08 | 上海市城市建设设计研究总院 | Connecting node of prefabricated concrete framework and embedded band vertical crack prefabricated concrete shear walls |
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| CN111636561A (en) * | 2020-04-27 | 2020-09-08 | 北京交通大学 | Plug-in type modular steel structure connecting node with reset function |
| CN111636561B (en) * | 2020-04-27 | 2021-07-23 | 北京交通大学 | Plug-in type modular steel structure connecting node with reset function |
| CN112814195A (en) * | 2021-01-05 | 2021-05-18 | 北京交通大学 | Self-resetting reinforced concrete shear wall based on viscoelastic energy consumption |
| CN113235771A (en) * | 2021-05-26 | 2021-08-10 | 华能秦煤瑞金发电有限责任公司 | Easily repaired assembled shear wall |
| CN113530331A (en) * | 2021-07-19 | 2021-10-22 | 重庆大学 | Self-reset module, frame structure with self-reset module and assembling method |
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|---|---|
| CN110005091B (en) | 2020-06-30 |
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