CN108643669A - It pushes up bottom and becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device - Google Patents

It pushes up bottom and becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device Download PDF

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Publication number
CN108643669A
CN108643669A CN201810337378.9A CN201810337378A CN108643669A CN 108643669 A CN108643669 A CN 108643669A CN 201810337378 A CN201810337378 A CN 201810337378A CN 108643669 A CN108643669 A CN 108643669A
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friction
steel plate
precast concrete
plate
concrete beam
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CN201810337378.9A
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CN108643669B (en
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黄林杰
周臻
左春丽
章梦霞
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Southeast University
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Southeast University
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21Connections specially adapted therefor
    • E04B1/215Connections specially adapted therefor comprising metallic plates or parts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/025Structures with concrete columns

Abstract

The invention discloses a kind of top bottoms to become friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, precast concrete beam, the change friction energy dissipation device that is connected as one precast concrete column and precast concrete beam including precast concrete column, positioned at precast concrete column side, it includes the middle friction steel plate with relief, the external friction steel plate with relief, the interior friction steel plate being connected on precast concrete beam to become friction energy dissipation device.The present invention can reduce structure high order mode effect, improve energy dissipation capacity of the structure under geological process, residual deformation of the prefabricated assembling type reinforced concrete structure under geological process is eliminated or reduced, the agent structures component such as prefabricated beam column is avoided apparent plastic deformation occur.

Description

It pushes up bottom and becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device
Technical field
The invention belongs to field of civil engineering, are related to a kind of top bottom change friction energy-dissipating Self-resetting prestressed concrete beam column section Point device.
Background technology
Earthquake brings extremely serious disaster to the mankind.Traditional Aseismic Design exists using Ductility Design Method Under geological process, structure division component is surrendered and is destroyed in advance, but entirety is unlikely to loss of function, the modeling after being surrendered by component Property deformation come the most seismic energy that dissipates, to achieve the purpose that ensure agent structure safety.It is this traditional based on holding Although carry power design method can avoid building occur damaging so that the destruction that causes casualties of collapsing in terms of have it is certain Reliability, but in moderate strength earthquake or violent earthquake, economic loss caused by but cannot efficiently controlling earthquake is most of After violent earthquake, although structure is not collapsed, unrepairable or it is continuing with, reconstruction can only be pushed over.In recent years, recoverable function Self-resetting precast prestressed concrete frame structure due to its can not only when earthquake occurs protection staff lives and properties, And residual displacement is small after shake, is conducive to repair, gradually develops into a kind of novel frame knot based on performance earthquake engineering research Structure.Currently, the used energy consumer of Self-resetting precast concrete frame joint mainly has surrender energy consumer and two class of friction energy dissipation device. Although the whole initial anti-side rigidity of the class formation is larger, it all only exists single startup power, once energy consumer surrender or friction Start, bean column node gap is opened, and structure anti-side rigidity is provided mainly by presstressed reinforcing steel rigidity, and the rigidity of structure is substantially reduced. Under severe earthquake action, the larger weakening of storey stiffness easily leads to Self-resetting precast concrete and generates obvious high order mode Effect, malformation are easy to concentrate, and local floor angle of displacement is larger, and non-structural element damage increases, and resets energy after the shake of structure Power is also affected.
Invention content
Technical problem:The present invention provides a kind of energy that can be consumed under geological process, eliminates or reduces and is prefabricated assembled Residual deformation of the reinforced concrete structure under geological process avoids the agent structures component such as prefabricated beam column from apparent plasticity occur The top bottom of deformation becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, the node apparatus can effectively solve it is above-mentioned from Reset the bottleneck problem in the application of precast concrete frame further genralrlization.
Technical solution:The top bottom of the present invention becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, including pre- Concrete column processed, positioned at the precast concrete beam of the precast concrete column side, by the precast concrete column and prefabricated mixed Two change friction energy dissipation devices, the change friction energy dissipation device up and down that solidifying Tu Liang is connected as one are connected to concrete including two Plate is frictionally secured in earth pillar side, will be described two in frictionally secure middle frictional connection plate that plate is connected as one, be connected to It is provided with two middle friction steel plates in friction bolt hole on the middle frictional connection plate, is connected to be reserved on precast concrete beam and rub Wipe bolt hole two interior friction steel plates and two external friction steel plates for being reserved with friction bolt hole, by described two interior friction steel The interior friction end plate that plate is connected as one, two interior friction steel plates are symmetricly set on both sides at the top of precast concrete beam, and two outer Friction steel plate is respectively set on the outside of interior friction steel plate, and the subregion between interior friction steel plate and external friction steel plate is provided with pad Plate, and by high strength bolt interior friction steel plate, external friction steel plate, backing plate and precast concrete beam connected it is integral, Remaining region that middle friction steel plate is arranged between outer friction steel plate and interior friction steel plate, and will be outer by frictional high-strength bolts Friction steel plate, middle friction steel plate, interior friction steel plate and precast concrete beam connect integral, interior friction end plate and middle frictional connection Plate is adjacent, and external friction steel plate and the opposite side of middle friction steel plate are all provided with and are set to relief, and the relief of the two is interlaced embedding It closes.The lateral presstressed reinforcing steel of the two is provided through in precast concrete column and precast concrete beam.
Further, embedding between middle friction steel plate and interior friction steel plate in the change friction energy dissipation device in apparatus of the present invention Enter friction plate.
Further, in apparatus of the present invention, the first friction bolt hole for being reserved on precast concrete beam, in interior friction steel plate The second friction bolt hole it is identical as the aperture in the 4th friction bolt hole on external friction steel plate, and less than in middle friction steel plate Third friction bolt hole aperture.
Further, in apparatus of the present invention, high strength bolt passes through be arranged on external friction steel plate first to fix spiral shell After the third fixed bolt hole being arranged on the second fixed bolt hole for being arranged on keyhole, backing plate, interior friction steel plate with concrete Tu Liang is connected and fixed, after frictional high-strength bolts pass through the 4th friction bolt hole, third friction bolt hole, the second friction bolt hole It is connected and fixed with precast concrete beam.
Further, in apparatus of the present invention, in frictionally secure plate precast concrete column side be fixed on by shear stud.
Further, in apparatus of the present invention, presstressed reinforcing steel is arranged on precast concrete column and precast concrete beam and reserves Transverse direction wear in muscle hole.
Close fusion of the node apparatus of the present invention based on " becoming friction energy-dissipating ", " prestressing force reset ", basic principle are: Change friction energy dissipation device utilizes the change of friction pretightning force to realize variation rigidity after two benches startup, startup, after starting for the second time Stiffness reliability high order mode effect increases energy dissipation capacity, to reduce Self-resetting prestressed concrete frame knot by becoming to rub Structure story drift and acceleration;Meanwhile becoming friction energy dissipation device and being reliably connected in beam sides with beam column by built-in fitting and bolt Top bottom position, do not influence floor arrangement, and the efficiency of friction energy-dissipating made to maximize.
The present invention is by combining precast prestressed concrete beam Column border node with friction energy dissipation device is become, to support jointly Antiseismic effect, earthquake energy.Structure includes precast concrete column, and precast concrete beam becomes friction energy dissipation device,.Node Middle friction steel plate is to frictionally secure to weld shear stud on plate in not with post separation in rotation process.Interior friction steel plate is in Friction steel plate produces relative sliding dissipation seismic energy, and the presstressed reinforcing steel through precast concrete column and precast concrete beam carries Being provided from reset force makes beam column be restored to deformation front position.
In the present invention, interior friction steel plate opposite sliding dissipation energy, Self-resetting concrete frame joint with the life of middle friction steel plate It produces relative sliding and needs certain rotation space, so friction steel plate friction bolt bore dia is to ensure joint rotation in increasing It is unrestricted.Middle friction steel plate, is made as relief at external friction steel plate, when beam column, which relatively rotates, is more than a certain range, in With external friction steel plate due to the presence of relief, distance therebetween can constantly increase and compress butterfly gasket, make to rub friction steel plate Wiping face normal direction normal pressure is continuously increased, and then increasing friction force so that friction energy dissipation device is provided with secondary rigidity and gradually increases Strong energy dissipation capacity.
Be prefabricated in the factory concrete column and beams of concrete, and in corresponding position there are presstressed reinforcing steel hole, beam, column component exist After on-site hoisting is in place, presstressed reinforcing steel is passed through to the hole reserved in beam column, then carries out tensioning.The prestressing without bondn of post-tensioning Muscle can both be connected in erection stage for device, can also bear pulling force and Moment in service stage.In order to improve section Rigidity is greatly reduced after point device energy dissipation capacity in use and node open, and is all provided at the position up and down of bean column node Set a pair of of change friction energy dissipation device.The change energy consumer is constituted energy-consuming device to combine steel part, by external friction steel plate, middle friction steel plate, Interior friction steel plate, friction plate, styletable pre-embedded steel slab, beam-ends pre-embedded steel slab, high strength bolt, frictional high-strength bolts, butterfly Shape gasket forms.Become two middle friction steel plates for being provided with friction bolt hole and relief in friction energy dissipation device to rub in being welded on one Structure is integral on connecting plate, is frictionally secured in being welded on middle frictional connection plate and welds the anti-of sufficient amount and intensity on plate Peg is cut even to be integral middle friction steel plate and precast concrete column.Two interior friction steel plates, the settings connected by end plate With the outermost external friction steel plate for carrying friction bolt hole and relief, between interior friction steel plate and external friction sheet steel sections area The backing plate in domain is even integral by the upper end of high strength bolt and precast concrete beam, in interior friction steel plate and middle friction Embedded friction plate, is used in combination frictional high-strength bolts by interior friction steel plate, middle friction steel plate, external friction steel plate and friction between steel plate Piece connects integral and constitutes and become friction energy dissipation device.
Apparatus of the present invention are mainly used for improving energy dissipation capacity of the assembly concrete frame structure under geological process, effectively Residual deformation of the structure under geological process is eliminated or reduced, and improves the packaging efficiency of structure.
The present invention, will for the deficiency occurred in existing conventional Self-resetting precast reinforced concrete frame joint connecting method " becoming friction energy-dissipating " closely merges with " prestressing force reset ", becomes rigid using becoming after friction energy dissipation device realizes multistage startup, startup Degree increases energy dissipation capacity, to reduce Self-resetting prestressed concrete by variable rigidity control high order mode effect by becoming to rub Native frame structure story drift and acceleration.Meanwhile becoming friction energy dissipation device and being reliably connected with beam column by built-in fitting and bolt In the top bottom position of beam sides, floor arrangement is not influenced, and the efficiency of friction energy-dissipating is made to maximize.
Advantageous effect:Compared with prior art, the present invention haing the following advantages:
Currently based on surrender energy consumer or the Self-resetting precast concrete frame joint of friction energy dissipation device, all only exist single Startup power.Although the whole initial anti-side rigidity of structure is larger, once energy consumer surrender or friction start, bean column node gap It opens, structure anti-side rigidity is provided mainly by presstressed reinforcing steel rigidity, and the rigidity of structure is substantially reduced.Under severe earthquake action, storey stiffness Larger weakening, easily lead to Self-resetting precast concrete frame and generate obvious high order mode effect, malformation is easy to collect In, local floor angle of displacement is larger, and non-structural element damage increases, and reset capability is also affected after the shake of structure.Using this The Self-resetting precast concrete bean column node form of technical solution, under geological process, relative deformation occurs for beam column, rubs in drive Wipe the opposite sliding between steel plate and inside and outside friction steel plate.Node starts for the first time is in planar slide section, and friction-type is high at this time The pretightning force of strength bolt is constant, therefore frictional force is constant.When sliding into relief section, second of startup of friction energy dissipation device, in With external friction steel plate due to the presence of relief, distance therebetween can constantly increase and compress butterfly gasket, make to rub friction steel plate Wiping face normal direction normal pressure is continuously increased, and then increasing friction force so that friction energy dissipation device is provided with secondary rigidity.Design process In, by adjusting plane segment length and relief section angle, can effectively control energy consumer restarting displacement and second Rigidity etc. after startup, to restorability energy of the lift structure under macroseism.
Since this node beam column pre-embedded steel slab is close together after node assembly, it is equivalent to and has been preassigned turn to node Dynamic point is the Rigid Body in Rotation With around the run-on point in the forms of motion of seismic process beam-column, is effectively reduced very in seismic process To the deformation for eliminating beam column itself.Beam column end with become friction energy dissipation device type of attachment and specially prevent the pre- of local failure Steel plate is buried it is possible to prevente effectively from part is subject to crushing (for example the end of precast beam, column is subject to crushing) during malformation.So shake The primary structural members such as rear beam column are held at elastic stage substantially, consequently facilitating the recycling of component, is ressembled.It is all Friction energy dissipation device is all to take bolted mode, therefore the replacement of friction energy dissipation device is more convenient.
Presstressed reinforcing steel through beam column can provide a Self-resetting power for node structure is made to be generated under geological process Recoverable force is to origin-location, so the node can be obviously reduced or eliminate the residual deformation of structure after shake.And it can root According to the size for needing change presstressed reinforcing steel that power is previously applied, presstressed reinforcing steel area of section and its distance relative to kernel of section axis Carry out the self-resetting capability of control node.
Nearly all component can be machined in non-construction site as needed, then transport construction as needed Scene is assembled, and assembling overall process is dry operational.The making that connector is worked into from component can be completed in factory, this Cost of labor and project progress and construction quality can effectively be controlled by being connected with wet type relative to general cast-in-place node.
Node is based on " becoming friction energy-dissipating " and is merged with the close of " prestressing force reset ", becomes friction energy dissipation device and realizes that the multistage opens Variation rigidity after dynamic, startup increases energy dissipation capacity, to subtract by stiffness reliability high order mode effect after startup by becoming to rub Small Self-resetting prestressed concrete frame story drift and acceleration;Meanwhile become friction energy dissipation device by built-in fitting and Bolt is reliably connected with beam column in the top bottom position of beam sides, does not influence floor arrangement, and the efficiency of friction energy-dissipating is made to maximize.
Connection stiffness mainly applies friction plate by structural initial pre stress size and by bolt the size and its phase of pretightning force The arm of force of run-on point is determined, and the structural initial pre stress of presstressed reinforcing steel and pretightning force is applied to friction plate is easy to control, so should Node can according to engine request in design and construction effective control node rigidity.Friction energy dissipation device be mounted on beam top and The method for arranging at bottom rather than central shaft position, this friction energy dissipation device can be significantly improved at present with the arm of force of increasing friction force The problem of this structures with semi-rigid joints form structure insufficient rigidity.
Description of the drawings
Fig. 1 is the organigram of apparatus of the present invention;
Fig. 2 is the 1-1 sections of Fig. 1;
Fig. 3 is joint rotation mechanism;
Fig. 4 is that node change friction energy-dissipating mechanism is opened at beam column interface;
Fig. 5 (a) is precast concrete column and trepanning front view, and Fig. 5 (b) is precast concrete column and trepanning side view;
Fig. 6 is precast concrete beam and trepanning schematic diagram;
Fig. 7 is interior friction steel plate trepanning and connection diagram;
Fig. 8 is middle friction steel plate trepanning and connection diagram;
Fig. 9 is external friction steel plate and trepanning schematic diagram;
Figure 10 is friction plate and trepanning schematic diagram;
Figure 11 is backing plate and trepanning trepanning schematic diagram;
Figure 12 is the block schematic illustration using node apparatus of the present invention.
Have in figure:Precast concrete column 1;Precast concrete beam 2;Middle friction steel plate 3;Middle frictional connection plate 4;Middle friction is solid Fixed board 5;Interior friction steel plate 6;Interior friction end plate 7;External friction steel plate 8;Friction plate 9;Frictional high-strength bolts 10;Pressure-bearing type is high-strength Bolt 11;Presstressed reinforcing steel 12;Presstressed reinforcing steel anchorage 13;Shear stud 14;First friction bolt hole 15;Second friction bolt hole 16;Third friction bolt hole 17;4th friction bolt hole 18;Backing plate 19;Butterfly gasket 20;First fixed bolt hole 21;Second Fixed bolt hole 22;Third fixed bolt hole 23.
Specific implementation mode
Technical scheme of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the top bottom of the present invention becomes in friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, main body Component includes precast concrete column 1, and precast concrete beam 2, connecting elements includes that node upper and lower part becomes friction energy dissipation device.On ground Under shake effect, the presstressed reinforcing steel 12 in Self-resetting precast concrete bean column node can provide Self-resetting power and eliminate node remnants changes Shape, and a large amount of seismic energy can be consumed by being arranged in the change friction energy dissipation device at bean column node, realize that the multistage starts, starts Variation rigidity afterwards increases energy dissipation capacity, to reduce Self-resetting by stiffness reliability high order mode effect after startup by becoming to rub Prestressed concrete frame story drift and acceleration avoid the agent structures component such as prefabricated beam column from apparent modeling occur Property deformation, seismic force is then by precast concrete beam column, presstressed reinforcing steel and friction energy dissipation device shared.The structure of following sections It makes and is discussed in detail:
(1) as shown in Figure 1, Self-resetting precast concrete frame includes precast concrete column 1, precast concrete beam 2, as The main element of node can effectively improve after being assembled into one by the change connecting elements such as friction energy dissipation device and presstressed reinforcing steel Structural Energy Dissipation ability and restorability energy, facilitate the Aseismic Design of different anti-seismic ability need lower structure.
(2) become two interior friction steel plates 6 for being provided with the second friction bolt hole 16 in friction energy dissipation device and be welded on friction in one Structure is integral on end plate 7, interior friction steel plate 6, external friction steel plate 8 and is sandwiched on the backing plate 19 of subregion between the two respectively Fixed bolt hole is provided with to be used for interior friction steel plate 6, external friction steel plate 8, backing plate 19 and prefabricated across high strength bolt 11 Beams of concrete 2 is even integral (Fig. 2).Two be provided with friction bolt hole and the middle friction steel plate 3 with relief pass through in rub It wipes connecting plate 4 to be even integral, welding shear stud on plate 5 is frictionally secured in middle frictional connection plate 4 being connected makes middle friction Fixed plate is embedded in precast concrete column 1 and will not be detached from, the embedded friction plate between interior friction steel plate 6 and middle friction steel plate 3 9, it is used in combination frictional high-strength bolts 10 to connect interior friction steel plate 6,3 external friction steel plate 8 of middle friction steel plate and friction plate 9 integral And it constitutes and becomes friction energy dissipation device.
(4) unbonded prestressing tendon 12 of horizontal symmetrical arrangement generates pressure to Vierendeel girder and bears moment of flexure, and beam-ends is cut Rub steel in higher frictional force and friction energy dissipation device that power is mainly generated by beam column contact surface in 12 precompressed of unbonded prestressing tendon Frictional force between plate and interior friction steel plate undertakes.Under geological process, relative deformation (Fig. 3) occurs for beam column, rubs in drive Opposite sliding (Fig. 4) between steel plate and inside and outside friction steel plate.Node starts for the first time is in planar slide section, at this time friction-type The pretightning force of high-strength bolt is constant, therefore frictional force is constant.When sliding into relief section, second of startup of friction energy dissipation device, With external friction steel plate due to the presence of relief, distance therebetween can constantly increase and compress butterfly gasket, make middle friction steel plate Rubbing surface normal direction normal pressure is continuously increased, and then increasing friction force so that friction energy dissipation device is provided with secondary rigidity (Fig. 4).If During meter, by adjusting plane segment length and relief section angle, can effectively control energy consumer restarting displacement and Rigidity etc. after second of startup, to restorability energy of the lift structure under macroseism.So as to avoid with the pre- of hidden bracket The damage of the main components such as concrete column 1 and precast concrete beam 2 processed.After geological process, structure is restored under prestressing force effect To origin-location (Self-resetting).

Claims (6)

1. a kind of top bottom becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, which is characterized in that the node apparatus Including precast concrete column (1), be located at the precast concrete column (1) side precast concrete beam (2), will it is described it is prefabricated mix Two change friction energy dissipation devices up and down that solidifying earth pillar (1) and precast concrete beam (2) are connected as one, the change friction energy dissipation device packet Include two be connected in precast concrete column (1) side frictionally secure plate (5), will be described two in frictionally secure plate (5) even Be connected in integrated middle frictional connection plate (4), be connected to two that friction bolt hole is provided on the middle frictional connection plate (4) in rub It wipes steel plate (3), be connected to two interior friction steel plates (6) for being reserved with friction bolt hole on precast concrete beam (2) and two in advance The interior friction end plate being connected as one there are the external friction steel plate (8) in friction bolt hole, by described two interior friction steel plates (6) (7), two interior friction steel plates (6) are symmetricly set on both sides at the top of precast concrete beam (2), and two external friction steel plates (8) are respectively On the outside of interior friction steel plate (6), the subregion between interior friction steel plate (6) and external friction steel plate (8) is provided with backing plate for setting (19), and by high strength bolt (11) by interior friction steel plate (6), external friction steel plate (8), backing plate (19) and concrete Tu Liang (2) is even integral, remaining area that middle friction steel plate (3) is arranged between outer friction steel plate (8) and interior friction steel plate (6) Domain, and by frictional high-strength bolts (10) by external friction steel plate (8), middle friction steel plate (3), interior friction steel plate (6) and prefabricated Beams of concrete (2) even it is integral, interior friction end plate (7) is adjacent with middle frictional connection plate (4), external friction steel plate (8) and in rub The opposite side of wiping steel plate (3), which is all provided with, is set to relief, and the relief of the two is interlaced chimeric;
The lateral presstressed reinforcing steel (12) of the two is provided through in the precast concrete column (1) and precast concrete beam (2).
2. top bottom according to claim 1 becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, feature It is, in the change friction energy dissipation device, embedded friction plate (9) between middle friction steel plate (3) and interior friction steel plate (6).
3. top bottom according to claim 1 becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, feature It is, the first friction bolt hole (15) reserved on the precast concrete beam (2), the second friction in interior friction steel plate (6) Bolt hole (16) is identical as the aperture in the 4th friction bolt hole (18) on external friction steel plate (8), and is less than middle friction steel plate (3) On third friction bolt hole (17) aperture.
4. top bottom according to claim 3 becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, feature It is, the high strength bolt (11) passes through the first fixed bolt hole (21), the backing plate being arranged on external friction steel plate (8) (19) the third fixed bolt hole (23) being arranged on the second fixed bolt hole (22) for being arranged on, interior friction steel plate (8) afterwards in advance Beams of concrete (2) processed is connected and fixed, and frictional high-strength bolts (10) pass through the 4th friction bolt hole (18), third friction bolt hole (17), the second friction bolt hole (16) is connected and fixed with precast concrete beam (2) afterwards.
5. top bottom according to claim 1,2,3 or 4 becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, It is characterized in that, frictionally secure plate (5) in described is fixed on precast concrete column (1) side by shear stud (14).
6. top bottom according to claim 1,2,3 or 4 becomes friction energy-dissipating Self-resetting prestressed concrete beam Column border node device, It is characterized in that, the presstressed reinforcing steel (12) is arranged in the transverse direction reserved on precast concrete column (1) and precast concrete beam (2) It wears in muscle hole.
CN201810337378.9A 2018-04-13 2018-04-13 Top-bottom variable friction energy consumption self-resetting prestressed concrete beam column joint device Active CN108643669B (en)

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CN111827761A (en) * 2020-06-22 2020-10-27 同济大学 Self-resetting support provided with stepless friction energy consumption adjusting device
CN112962807A (en) * 2021-01-21 2021-06-15 北京交通大学 Friction type self-resetting cast-in-situ beam column node
CN113175417A (en) * 2021-04-15 2021-07-27 重庆大学 Wind turbine generator system lattice type tower capable of recovering energy consumption and enhancing energy consumption capacity
CN113833144A (en) * 2021-09-29 2021-12-24 东南大学 Friction energy consumption rotation self-reset node device

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