CN104878852B - Frictional energy dissipation self-centering shear wall structure with easily restored bottom - Google Patents
Frictional energy dissipation self-centering shear wall structure with easily restored bottom Download PDFInfo
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- CN104878852B CN104878852B CN201510240641.9A CN201510240641A CN104878852B CN 104878852 B CN104878852 B CN 104878852B CN 201510240641 A CN201510240641 A CN 201510240641A CN 104878852 B CN104878852 B CN 104878852B
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Abstract
The invention discloses a frictional energy dissipation self-centering shear wall structure with an easily restored bottom. The frictional energy dissipation self-centering shear wall structure with the easily restored bottom comprises at least one structure unit, and the structure unit comprises an ordinary prefabricated wall section, a spiral stirrup reinforcement prefabricated wall section, an easily restored wall section located at the lower side of the spiral stirrup reinforcement prefabricated wall section, friction dampers located at two sides of the easily restored wall section, and an un-bonded pre-stressed tendon located in the wall body; the spiral stirrup reinforcement prefabricated wall section comprises an inside spiral stirrup, a pre-embedded plate inserted in the spiral stirrup, and T-shaped connecting plates connected with the easily restored wall section and further connected with slotted spiral stirrup reinforcement wall blocks of the easily restored wall section; the easily restored wall section comprises two slotted spiral stirrup reinforcement wall blocks; each friction damper comprises an upper support and a lower support. The frictional energy dissipation self-centering shear wall structure with the easily restored bottom is capable of effectively eliminating the plastic deformation of the concrete shear wall and simplifying the self-centering shear wall restoring method, and the engineering structure restoring cost and difficulty are greatly lowered after an earthquake.
Description
Technical field
The invention belongs to field of civil engineering, is related to a kind of soap-free emulsion polymeization bottom for reducing engineering structure earthquake disaster easy
The friction energy-dissipating Self-resetting shear wall structure of reparation.
Background technology
Earthquake gives people class and brings extremely serious disaster.Traditional Aseismic Design uses Ductility Design Method, that is, exist
Under geological process, by the surrender in advance and destruction of structure division component, but entirety is unlikely to loss of function, by the modeling of component
Property deformation come the most seismic energy that dissipates, so as to reach the purpose for ensureing agent structure safety.
Automatic reset concrete shear wall as a kind of typical energy-dissipating and shock-absorbing technology, due to big, remaining with anti-side rigidity
Deform the advantages of easily repairing after little, good damping effect and shake, be widely used in recent years.In wind load or frequently occurred earthquake
Under effect, automatic reset concrete shear wall remains elasticity as structural elements, can provide anti-side rigidity for structure；It is middle shake or
Under big shake effect, automatic reset concrete shear wall is mitigated and is even kept away by the Self-resetting of the waving of body of wall, presstressed reinforcing steel and gravity
Exempt from agent structure damage, can be by repairing precast concrete shear wall section come the use function of fast quick-recovery structure after shake.Pass through
To wall size, presstressed reinforcing steel initial tension, frcition damper damping force adjustment, the solid shear wall of Self-resetting coagulation can be made horizontal
Rigidity, bearing capacity, ductility and Hysteresis Behavior under power effect changes, and this property can facilitate engineer in structure
The adjustment of different parts rigidity of structure matching is carried out during design.Meanwhile, body of wall itself finishing after can as building structure in point
Partition wall body, reduces structural cost.
However, although existing automatic reset concrete shear wall can be effectively reduced, agent structure is remaining after earthquake to be become
Shape, but because the concrete precast block scale of construction is big, inside configuration is installed on, mild-steel energy-consumption component is installed in pre-cast concrete walling section
Portion so that dissipative member and wall section are difficult to change after strong earthquakes, and shake back wall top is substantially at elastic stage, bottom wall
Section concrete crushing is damaged, and common Self-resetting shear wall then needs to change whole wall sections, removes full wafer body of wall, so as to cause building dimension
Accomplish this and change being significantly increased for difficulty.Therefore, the convertibility of automatic reset concrete shear wall structure how is improved, is to promote
Make the key of its further genralrlization application in Practical Project.
For the problem that existing automatic reset concrete shear wall is present, the present invention proposes automatic reset concrete shear wall structure
The device and technology of reparation, on the basis of ensureing that body of wall main body is not required to dismounting, effectively improves the concrete prefabricated wall of Self-resetting
The remediation efficiency of bottom rapid wear wall section.
The content of the invention
Technical problem：The present invention for existing automatic reset concrete shear wall structure big shake lower bottom part rapid wear wall section and its
The problem that built-in mild steel damper is not easily repaired, there is provided a kind of not only to effectively improve bottom wall section remediation efficiency, realizes knot
The method of structure main body Self-resetting purpose, and simplify the installation of body of wall bottom antivibrator, so as to significantly reduce engineering structure shake
Rehabilitation expense afterwards and difficulty, at the same can also flexibly independent adjusted and controlled intensity, rigidity and ductility rubbing of easily repairing of bottom
Wipe energy-consumption self-resetting shear wall structure.
Technical scheme：The friction energy-dissipating Self-resetting shear wall structure that the bottom of the present invention is easily repaired, including at least one knot
Structure unit, construction unit include be sequentially connected from top to bottom setting normal concrete dry wall section, tie hoop encryption wall section,
Easily repair wall section, encrypt wall positioned at the easy frcition damper for repairing wall section both sides, the frcition damper and tie hoop
Section bottom surface connection, the center arranged in the normal concrete dry wall section, tie hoop encryption wall section and easy reparation wall section is pre-
Box out and up/down perforation and posttension unbonded prestressing tendon is installed；Joint bar, pressure-bearing spiral shell are provided with tie hoop encryption wall section
Rotation stirrup, bottom surface is provided with the prefabricated band bolt hole backing plate being connected with the joint bar, and bottom is preset with horizontal the first couple and draws spiral shell
Keyhole.The easy reparation wall intrasegmental part edge is provided with normal spiral stirrup, and middle setting has the second horizontal split bolt hole,
Two pieces of T-shaped connecting plates are arranged on tie hoop encryption wall section and easily repair the both sides in front and back of wall section, by through first pair of drawing spiral shell
The split bolt in keyhole and the second split bolt hole is fixed.
In a preferred embodiment of the present invention, the upper end of posttension unbonded prestressing tendon is anchored at common coagulation by anchorage
The top of native dry wall section, lower end is embedded in ground.
In a preferred embodiment of the present invention, easily repair wall section and be put together by two wall blocks with open semicircle groove, institute
The open semicircle groove stated constitutes center reserving hole channel after closing up.
In a preferred embodiment of the present invention, frcition damper includes lower seat end, is arranged on the lower seat end
On friction core energy dissipating portion, the top of the friction energy-dissipating part is connected with prefabricated band bolt hole backing plate.
In a preferred embodiment of the present invention, construction unit is multiple, and adjacent structural units are fixed by vertical connector
Connection.
In another kind of preferred version of the present invention, construction unit is fixedly connected by connector with floorboard.
Beneficial effect：The present invention compared with prior art, with advantages below：
(1) the technical program can effectively improve the remediation efficiency of automatic reset concrete shear wall.When bearing consumingly
When shake is acted on, structure will produce larger relative storey displacement, although waving for Self-resetting concrete wall can reduce the residual of structure
Remaining deformation, but while also cause the damage of its lower concrete dry wall section, cause in building structure inside dry wall section
Repair and repair and be difficult.Method by replacing former bottom dry wall section using new sliceable wall section, is removing T-shaped connecting plate
After split bolt, top lift is applied by jack, directly can be repaired bottom rapid wear wall section, so as to significantly reduce knot
The cost repaired after structure shake and difficulty.
(2) the technical program can effectively improve antivibrator remediation efficiency in automatic reset concrete shear wall.For biography
The automatic reset concrete shear wall of system, is to improve its energy dissipation capacity, and its bottom wall intrasegmental part is provided with mild steel damper, works as structure
When there is lateral deformation under geological process, some or all of antivibrator is inevitably caused to fail so that after structure shake
Maintenance cost and difficulty it is higher.The frcition damper of the technical program is installed on bottom and easily repairs wall section both sides, with ground
Bearing and tie hoop encryption wall pars infrasegmentalis backing plate connection, so as to structure shake rear damper can be avoided to be difficult to repair.So not only
The cost repaired after structure shake can be effectively reduced, and replaces mild steel damper to reduce antivibrator by frcition damper and be damaged
Risk.
(3) protection for being conducive to antivibrator of the technical program.For traditional prestressing force Self-resetting wall, if external
Frcition damper, then can be in bottom wall section external application antivibrator, because antivibrator is close together with body of wall, therefore when Self-resetting wall
Lateral deformation and when rotating around one jiao of body of wall bottom, the presence of antivibrator can affect the swing of body of wall so that body of wall waves energy
Power reduces, or even the collision due between causes the damage of antivibrator, increased the expense keeped in repair after structure shake.And this technology side
The external antivibrator of case is not joined directly together with bottom wall section, and keeps certain distance with bottom wall section so that body of wall is being waved and answered
The collision with antivibrator is avoided during position, while providing enough energy dissipation capacities for body of wall.When earthquake acts on structure,
The lateral deformation of Self-resetting body of wall is simultaneously easily repaired and exist all the time between wall section space around the rotation of one jiao of bottom, antivibrator and bottom, is hindered
Buddhist nun's device and top tie hoop encryption wall section leave it is more than needed, so as to avoid antivibrator during power consumption to the unfavorable shadow of body of wall
Ring.
(4) the technical program energy structure flexibly adjusts rigidity, intensity and the ductility of structure.Due to frcition damper it is external,
Easily can according to demand adjust, therefore for same body of wall, be incited somebody to action using different presstressed reinforcing steel arrangement and damping arrangement
To the Self-resetting wall of different demands, so knot can be allowed according to building demand and structure arrangement adaptation presstressed reinforcing steel and antivibrator
The adjustment of structure scheme can be more flexibly and independent, also substantially increases the economy of structure.
(5) the technical program simple structure, it is easy to make, it is especially suitable for industrialized production and manufacture.Due to its processing
Technique is similar with traditional self-centering framework, and producer need not make larger adjustment just can carry out industrialized production, so as to reduce
The difficulty and cost of manufacture, with higher price competitiveness.
Description of the drawings
Fig. 1 is the axonometric drawing of shear wall structure of the present invention；
Fig. 2 is that tie hoop encrypts wall section organigram；
Fig. 3 a easily repair wall section organigram for bottom；
Fig. 3 b are Fig. 3 a right sides trough of belt dry wall block front view；
Fig. 3 c are Fig. 3 a right sides trough of belt dry wall block left view；
Fig. 3 d are Fig. 3 a right sides trough of belt dry wall block top view；
Fig. 4 easily repairs section and repairs schematic diagram for bottom；
Have in figure：Normal concrete dry wall section 1, tie hoop encrypts wall section 2, prefabricated band bolt hole backing plate 21, joint bar
22nd, pressure-bearing tie hoop 23, the first split bolt hole 24, T-shaped connecting plate 25, split bolt 26, presstressed reinforcing steel duct in wall section
27th, wall section 3, presstressed reinforcing steel groove 31, tie hoop wall block 32, normal spiral stirrup 33 are easily repaired, the second split bolt hole 34, is rubbed
Wipe antivibrator 4, frcition damper bearing 41, posttension unbonded prestressing tendon 5, anchorage 51, jack 6, jack bottom cushion block
61st, ground 7.
Specific embodiment
Technical scheme is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the friction energy-dissipating Self-resetting shear wall structure that the bottom of the present invention is easily repaired, including at least one knot
Structure unit, the construction unit includes being sequentially connected the multistage normal concrete according to design requirement height of setting from top to bottom
Dry wall section 1, tie hoop encryption wall section 2, easily repair wall section 3, positioned at the easy frcition damper 4 for repairing the both sides of wall section 3,
The frcition damper 4 is connected with the bottom surface of tie hoop encryption wall section 2, and the normal concrete dry wall section 1, tie hoop adds
Close wall section 2 and easily repair the center reserving hole channel up/down perforation arranged in wall section 3 and posttension unbonded prestressing tendon 5 is installed；.
As shown in Fig. 2 be provided with joint bar 22, pressure-bearing tie hoop 23 in tie hoop encryption wall section 2, bottom surface be provided with
The prefabricated band bolt hole backing plate 21 of the connection of the joint bar 22, bottom is preset with the first horizontal split bolt hole 24, and joint bar 22 can
It is surround and is welded on pressure-bearing tie hoop 23 by pressure-bearing tie hoop 23, strengthens its anchoring property.
As shown in Fig. 3 a～Fig. 3 d, easily repair the internal edge of wall section 3 and be provided with normal spiral stirrup 33, middle setting has water
The second flat split bolt hole 34, two pieces of T-shaped connecting plates 25 are arranged on tie hoop encryption wall section 2 and easily repair before wall section 3
Afterwards both sides, are fixed by the split bolt 26 through the first split bolt hole 24 and the second split bolt hole 34.
As shown in figure 1, the upper end of posttension unbonded prestressing tendon 5 is anchored at normal concrete dry wall section by anchorage 51
1 top, lower end is embedded in ground 7.Easily repair wall section 3 to be put together by two wall blocks 32 with open semicircle groove 31, institute
The open semicircle groove 31 stated constitutes center reserving hole channel after closing up.Frcition damper 4 include lower seat end 41, be arranged on it is described under
Friction core energy dissipating portion 42 on portion bearing end 41, top and the prefabricated band bolt hole backing plate 21 of the friction energy-dissipating part 42
Connection.
In a preferred embodiment of the present invention, the friction energy-dissipating Self-resetting shear wall structure that bottom is easily repaired includes level side
The multiple construction units being sequentially connected by vertical connector upwards, the both sides of overall structure unit are connected with frame column.
In another kind of preferred version of the present invention, construction unit is fixedly connected by connector with floorboard.
Post-tensioned prestressing formula concrete shear force wall in the technical program, under wind load or frequently occurred earthquake effect, body of wall is made
It is structural elements under posttension unbonded prestressing tendon 5 and self gravitation effect, lateral rigidity can be provided for structure；It is middle shake or
Under big shake effect, the frcition damper 4 for easily repairing the both sides of wall section 3 can be with the dissipation seismic energy of high degree, while body of wall exists
Self-resetting capability under presstressed reinforcing steel 5 and self gravitation effect, can mitigate or even avoid agent structure from damaging.By adjusting runback
The parameters such as the position wall section size of concrete shear force wall, presstressed reinforcing steel initial tension and antivibrator damping force, overall to shear wall can exist
Rigidity, bearing capacity, ductility and Hysteresis Behavior under Lateral Force is controlled；Can be used as building structure after body of wall itself finishing
In separation body of wall, reduce structural cost.
Bottom is easily repaired wall section 3 and plays two important function in the technical program：(1) improve Self-resetting concrete to cut
The easy repair ability of power wall construction.Because structure is installed on building interior, and bottom wall section is most fragile after shaking, and repairs bottom wall
Section needs to remove full wafer wall unavoidably, installs and easily repairs the dismounting that upper wall body can be effectively avoided after wall section.(2) play and keep away
Exempt from the effect being joined directly together with frcition damper, make the two combination produce gap, while compatibility of deformation, will not mutual shadow
Ring.
As shown in figure 4, when needing to repair bottom wall section 3 after shake, first removal easily repairs the frcition damper of the both sides of wall section 3
4 and its bearing 41, afterwards removal encrypt split bolt 26 and the T-shaped connecting plate 25 that wall section 2 be connected with tie hoop, damp former
The cushion block 61 of jack 6 is set on the position of device bearing 41, using the pre-buried backing plate 21 of connection damper 4 as bearing plate, thousand is used
6 synchronization of jacking up tie hoops of jin top encrypt wall section 2, remove and repair the band for having damaged again after the gap for meeting condition is produced
Groove tie hoop wall block 32, and reparation complete slice body of wall is installed according to the order corresponding with dismounting.
Above-described embodiment is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, some improvement and equivalent can also be made, these are to the present invention
Claim is improved and the technical scheme after equivalent, each falls within protection scope of the present invention.
Claims (6)
1. the friction energy-dissipating Self-resetting shear wall structure that a kind of bottom is easily repaired, it is characterised in that the structure includes at least one
Construction unit, the construction unit includes being sequentially connected normal concrete dry wall section (1), the tie hoop of setting from top to bottom
Encryption wall section (2), easily repair wall section (3), positioned at the easy frcition damper (4) for repairing wall section (3) both sides, the friction resistance
Buddhist nun's device (4) is connected with tie hoop encryption wall section (2) bottom surface, the normal concrete dry wall section (1), tie hoop encryption wall
The middle center reserving hole channel up/down perforation for arranging of section (2) and easily reparation wall section (3) is simultaneously provided with posttension unbonded prestressing tendon
(5)；
Be provided with joint bar (22), pressure-bearing tie hoop (23) in tie hoop encryption wall section (2), bottom surface be provided with it is described
Prefabricated band bolt hole backing plate (21) of joint bar (22) connection, bottom is preset with the first horizontal split bolt hole (24)；
Easy reparation wall section (3) internal edge is provided with normal spiral stirrup (33), and middle setting has horizontal the second couple to draw
Bolt hole (34), two pieces of T-shaped connecting plates (25) are arranged on tie hoop encryption wall section (2) and easily repair in front and back the two of wall section (3)
Side, it is fixed by the split bolt (26) through the first split bolt hole (24) and the second split bolt hole (34).
2. the friction energy-dissipating Self-resetting shear wall structure that bottom according to claim 1 is easily repaired, it is characterised in that described
The upper end of posttension unbonded prestressing tendon (5) is anchored at the top of normal concrete dry wall section (1), lower end by anchorage (51)
In being embedded in ground (7).
3. the friction energy-dissipating Self-resetting shear wall structure that bottom according to claim 1 is easily repaired, it is characterised in that described
Easily repair wall section (3) to be put together by two wall blocks (32) with open semicircle groove (31), described open semicircle groove (31) closes up
Center reserving hole channel is constituted afterwards.
4. the friction energy-dissipating Self-resetting shear wall structure that bottom according to claim 1,2 or 3 is easily repaired, its feature exists
In the frcition damper (4) is consumed including lower seat end (41), the friction core being arranged on the lower seat end (41)
Can partly (42), the top of the friction energy-dissipating part (42) is connected with prefabricated band bolt hole backing plate (21).
5. the friction energy-dissipating Self-resetting shear wall structure that bottom according to claim 1,2 or 3 is easily repaired, its feature exists
In the construction unit is multiple, and adjacent structural units are fixedly connected by vertical connector.
6. the friction energy-dissipating Self-resetting shear wall structure that bottom according to claim 1,2 or 3 is easily repaired, its feature exists
In the construction unit is fixedly connected by connector with floorboard.
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| CN201510240641.9A CN104878852B (en) | 2015-05-12 | 2015-05-12 | Frictional energy dissipation self-centering shear wall structure with easily restored bottom |
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| CN201510240641.9A CN104878852B (en) | 2015-05-12 | 2015-05-12 | Frictional energy dissipation self-centering shear wall structure with easily restored bottom |
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| CN107299697B (en) * | 2017-06-22 | 2019-03-01 | 同济大学 | Energy-dissipating type shear wall foundation |
| CN108104308B (en) * | 2017-12-15 | 2023-06-09 | 南京工业大学 | Repairable multistage energy consumption dry-type mixed assembled concrete shear wall |
| CN108360710B (en) * | 2018-01-31 | 2023-08-04 | 广州大学 | Assembled damping wall body of building structure |
| CN110593417A (en) * | 2018-06-12 | 2019-12-20 | 迈瑞司（北京）抗震住宅技术有限公司 | Assembled shear wall |
| CN108952284B (en) * | 2018-07-24 | 2020-12-18 | 青岛理工大学 | Shear wall vertical damping bearing connecting piece and mounting method thereof |
| CN109854054B (en) * | 2019-01-30 | 2019-12-27 | 宁波工程学院 | Self-resetting shear wall mixed structure |
| CN110005096B (en) * | 2019-03-13 | 2020-04-10 | 北京交通大学 | Self-resetting concrete shear wall with built-in shape memory alloy |
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| CN109898701A (en) * | 2019-04-17 | 2019-06-18 | 商洛学院 | A kind of shear wall corner component being conveniently replaceable |
| CN110042981A (en) * | 2019-04-24 | 2019-07-23 | 东南大学 | A kind of CLB of Self-resetting waves wall and preparation method thereof |
| CN113585520B (en) * | 2021-08-05 | 2023-04-07 | 浙江富安莱建设集团有限公司 | Frame shear wall building and construction method thereof |
| CN113756461B (en) * | 2021-08-20 | 2023-06-02 | 北京工业大学 | Base angle damper with displacement amplifying function and assembled shear wall with swing energy consumption function |
| CN114635501B (en) * | 2022-03-22 | 2023-10-17 | 哈尔滨工业大学（深圳） | Method and device for optimizing folding window of construction of cantilever truss of super high-rise structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103510639B (en) * | 2013-10-15 | 2016-03-23 | 合肥工业大学 | A kind of can the overlaid plate type shear wall of restore funcitons and implementation method thereof |
| CN103790262B (en) * | 2014-02-13 | 2015-10-28 | 智性科技南通有限公司 | A kind of changeable type Wasted-energy steel plate combines the shear wall that cracks |
| CN203769122U (en) * | 2014-03-28 | 2014-08-13 | 武汉大学 | Self-restoration constraint brickwork wall with external friction dampers |
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