CN105926794A - Assembly type soft steel damper optimized through equal-stress line - Google Patents

Assembly type soft steel damper optimized through equal-stress line Download PDF

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Publication number
CN105926794A
CN105926794A CN201610317439.6A CN201610317439A CN105926794A CN 105926794 A CN105926794 A CN 105926794A CN 201610317439 A CN201610317439 A CN 201610317439A CN 105926794 A CN105926794 A CN 105926794A
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CN
China
Prior art keywords
mild
steel
type
plate
bolt
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CN201610317439.6A
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Chinese (zh)
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CN105926794B (en
Inventor
王涛
朱柏洁
王津
张令心
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中国地震局工程力学研究所
北京固力同创工程科技有限公司
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Priority to CN201610317439.6A priority Critical patent/CN105926794B/en
Publication of CN105926794A publication Critical patent/CN105926794A/en
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    • 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
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids

Abstract

The invention relates to a damper with vibration energy dissipated through a soft steel surface internal yield deformation mechanism. The damper is used for energy dissipation and vibration reduction of a house building. An assembly type soft steel damper optimized through an equal-stress line comprises a soft steel energy dissipation piece, an anti-buckling clamping plate, L-shaped connecting plates, anchoring steel plates, a polyfluortetraethylene plate, pre-pressing fastening bolts, friction type high-strength connecting bolts, a limiting bolt, embedded anchoring steel bars and flexible filling materials. The assembly type soft steel damper optimized through the equal-stress line can serve as a dividing element of a building to be installed in a structure and does not bear a vertical load; when the assembly type soft steel damper bears a wind load or an earthquake load, the elastic-plastic hysteretic behavior generated when the soft steel energy dissipation piece deforms dissipates the energy input by the wind load or the earthquake load, and thus main components of the structure are protected; the soft steel energy dissipation piece is optimized through the equal-stress line, so that accumulated plastic deformation of the energy dissipation piece is greatly reduced, and the low cycle fatigue performance of the energy dissipation piece is enhanced.

Description

Use the assembled mild steel damper that stress isobar optimizes
(1) technical field
The invention belongs to Construction Anti-earthquake technical field, relate to a kind of antivibrator utilizing and surrendering deformation mechanism dissipation vibrational energy in mild steel face.
(2) background technology
Seismic activity in recent years is violent, engineering structure causes great infringement, has even resulted in serious casualties, and a series of earthquakes such as Wenchuan, cajaput, Lushan, Ludian show that China's town building is still faced with serious earthquake and threatens.It is in 7 degree and region of setting up defences above along with the issue of new edition seismic rehionalization map, 7 degree of China and region area of setting up defences above increase to the 58% of national area, the provincial capital of 82% and the prefecture-level city of 57%.The most efficient and the economic shock resistance strengthening building structure is one of important topic of current protection against and mitigation of earthquake disasters engineering.The up-to-date anti-seismic technology means that energy-dissipating and shock-absorbing technology grows up for this just, use the mode of " defeating a force with a tenderness " to dissipate inputting seismic energy, play the effect of " electric fuse ", sacrifice oneself, save agent structure component from damage.On the one hand structural seismic capacity is greatly enhanced, on the other hand fast changeable after shake.
Common energy-consuming shock absorber can be divided mainly into four big classes: viscous damper, metal damper, viscoelastic damper and frcition damper.Metal mild steel damper is cheap with it, the characteristic of dependable performance and by the generally favor of people.Metal mild steel damper utilizes the plastic energy dissipation energy after metal material surrender.Metal mild steel damper hysteretic characteristic is stable, and low-Cycle Fatigue Characteristics is good, damping clear mechanism, and damping effect is notable, and the most influenced by ambient temperature.Conventional metal mild steel damper uses in-plane deformation dissipation energy, and based on detrusion, rigidity is big, and energy dissipation capacity is strong.But easily there is out-of-plane buckling in power consumption plate, wayward;Type of attachment for power consumption section steel plate mostly is welding, on the one hand have impact on the low cycle fatigue property of antivibrator, is on the other hand difficult to quick-replaceable after shake.Particularly, existing mild steel damper is initially entered surrender in the corner of power consumption plate by the control of direct stress, and accumulating plastic deformation is very big, and test shows that this is the stress point that this type antivibrator occurs low-cycle fatigue fracture to destroy at first.
(3) summary of the invention
It is contemplated that overcome the disadvantages mentioned above of conventional metals mild steel damper, it is proposed that the assembled mild steel damper that a kind of novel employing stress isobar optimizes.This device utilizes mild steel in-plane bending-detrusion mechanism dissipation seismic energy, seismic energy is concentrated on mild-steel energy-consumption sheet, and through section optimal, when making coming earthquake, the equivalent stress of power consumption sheet outer ledge reaches maximum simultaneously, forms stress isobar, improves the energy dissipation capacity of antivibrator, and effectively reduce the peak value of accumulating plastic deformation, thus improve low-cycle fatigue ability.Use full articulated constuction, even if antivibrator exists residual force after shake, it is possible to be removed and replaced for easily, thus reach fast quick-recovery and use the ability of function.This antivibrator can use in building structure coupling beam, it is also possible to uses as wall antivibrator between levels.
The present invention uses the assembled mild steel damper of stress isobar optimization to include: mild-steel energy-consumption sheet 1, anti-buckling clamping plate 2, L-type connecting cleat 3, anchor plate 4, polyfluortetraethylene plate 5, pre-pressing fixing bolt 6, the high-strength connecting bolt of friction-type 7, caging bolt 8, pre-buried anchor bar 9, flexible packing material 10, clamping plate pad 11, the antivibrator line style 12 that stress isobar optimizes, screwed hole 13.
nullWherein anchor plate 4 carries pre-buried anchor bar 9 to be embedded in securely in concrete connecting-beam,Anchor plate 4 has screwed hole 13 in order to connect L-type connecting cleat 3,Mild-steel energy-consumption sheet 1 is connected with anchor plate 4 by L-type connecting cleat 3,Bolt hole is opened in mild-steel energy-consumption sheet 1 and L-type connecting cleat 3 junction,And connected by the high-strength connecting bolt of friction-type 7,When many group mild-steel energy-consumption sheets 1 are in parallel,Clamping plate pad 11 should be set,Bolt hole is opened in L-type connecting cleat 3 and coupling beam anchor plate 4 junction,Connect also by the high-strength connecting bolt of friction-type 7,Anti-buckling clamping plate 2 arrange bolt hole in the vacancy of mild-steel energy-consumption sheet 1 boundary curve,By pre-pressing fixing bolt 6, mild-steel energy-consumption sheet 1 clamping is prevented out-of-plane buckling,Place polyfluortetraethylene plate 5 between anti-buckling clamping plate 2 and mild-steel energy-consumption sheet 1 and reduce the frictional force that face pressure causes,Caging bolt 8 is set in the middle part of mild-steel energy-consumption sheet 1 to position anti-buckling clamping plate 2,The antivibrator line style 12 that stress isobar optimizes it is shaped as in the middle part of mild-steel energy-consumption sheet 1,Its exterior one layer of flexible packing material 10 of parcel prevents corrosion.
The intensity of antivibrator is not to be exceeded that the intensity of coupling beam concrete parts, the stiffnes s equivalent of whole coupling beam become damper stiffness and the series connection of two section concrete coupling beam rigidity, overall coupling beam rigidity and the equivalence of former concrete connecting-beam.Under frequently occurred earthquake, mild-steel energy-consumption sheet is in elastic stage, and antivibrator provides and the initial stiffness of original reinforced concrete coupling beams equivalence.Under earthquake of setting up defences, antivibrator initially enters yield situation, and mild-steel energy-consumption sheet passes through shearing lag return mechanism earthquake energy, starts the seismic energy that dissipates, and protects concrete component to exempt from destruction.Under rarely occurred earthquake, there is the bigger shearing changing of the relative positions in coupling beam, and antivibrator enters bigger mecystasis, and dissipate a large amount of seismic energy, thus reduces integrally-built seismic response.
The present invention is applied in engineering structure deform bigger position, such as coupling beam or stratified deformation under geological process.When being applied between two-layer, connection buttress should be set, multiple antivibrator parallel operation can be set connecting on buttress, connect buttress and should have enough rigidity and intensity, it is to avoid destroy early than antivibrator surrender.
Structural damage under severe earthquake action is concentrated on antivibrator by this invention, thus avoid other concrete components, such as wall limb, destroys, and is finally reached after promoting overall structure anti-seismic performance, control damage, guarantee shake the purpose that can quickly repair, reduce economic loss.
Beneficial effects of the present invention:
The present invention is metallic article, and surface, through strict antiseptic and rustproof process, has good durability;Present configuration is simple, and mechanics approach is clear and definite, and dependable performance is easy for installation, it is simple to the quick-replaceable after shake;The present invention can dissipate when earthquake occurs the energy that earthquake is transmitted to building, reduces the seismic response of agent structure;Can be used for high level, super high rise structure damping, effect is obvious;The strength and stiffness flexible design of the present invention, can be arranged as required to the diverse location in engineering structure.
(4) accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the section of structure of the embodiment of the present invention 1.
Fig. 3 is the mild-steel energy-consumption sheet schematic diagram of the embodiment of the present invention 1.
Fig. 4 is the anti-buckling clamping plate schematic diagram of the embodiment of the present invention 1.
Fig. 5 is the L-type connecting cleat schematic diagram of the embodiment of the present invention 1.
Fig. 6 is the anchor plate schematic diagram of the embodiment of the present invention 1.
Fig. 7 is the section of structure of the embodiment of the present invention 2.
Fig. 8 is the structural representation of the embodiment of the present invention 3.
In figure, mild-steel energy-consumption sheet 1, anti-buckling clamping plate 2, L-type connecting cleat 3, anchor plate 4, polyfluortetraethylene plate 5, pre-pressing fixing bolt 6, the high-strength connecting bolt of friction-type 7, caging bolt 8, pre-buried anchor bar 9, flexible packing material 10, clamping plate pad 11, the antivibrator line style 12 that stress isobar optimizes, screwed hole 13.
(5) detailed description of the invention
Embodiment 1
Fig. 1 is the structural representation of the present embodiment.The present embodiment is that flexible packing material 10 is constituted by mild-steel energy-consumption sheet 1, anti-buckling clamping plate 2, L-type connecting cleat 3, anchor plate 4, polyfluortetraethylene plate 5, pre-pressing fixing bolt 6, the high-strength connecting bolt of friction-type 7, caging bolt 8, pre-buried anchor bar 9.During assembling, first according to bolt hole position, mild-steel energy-consumption sheet 5,2 anti-buckling clamping plate 2 of 1,2 polyfluortetraethylene plates are carried out location to assemble, caging bolt 8 and pre-pressing fixing bolt 6 is utilized to be fixed, assembling sequence is mild-steel energy-consumption sheet 1, polyfluortetraethylene plate 5 and anti-buckling clamping plate 2 from inside to outside, and two sides is identical.Mild-steel energy-consumption sheet 1 two ends are connected with the L-type connecting cleat 3 high-strength connecting bolt of friction-type 7.L-type connecting cleat 3 is connected by the high-strength connecting bolt of friction-type 7 with anchor plate 4.Anchor plate 4 has abundant pre-buried anchor bar 9 so that it is be firmly connected with concrete.After assembling, at antivibrator trypsin method flexibility packing material 10, can be selected for foaming agent and be filled with, be used for protecting antivibrator to exempt from corrosion.
Fig. 2 is the section of structure of the present embodiment, and caging bolt 8 is positioned at the both sides of same mild-steel energy-consumption sheet, carries out spacing with nut respectively, prevents the anti-buckling clamping plate 2 of both sides and polyfluortetraethylene plate 5 from shifting in deformation process.
Fig. 3 is the mild-steel energy-consumption sheet schematic diagram of the present embodiment, and bolt hole is opened at two ends, and bolt link position surface sand-blasting processes, and power consumption section uses the curve shape 12 that stress isobar optimizes, and both side surface has caging bolt 8.
Fig. 4 is the anti-buckling clamping plate schematic diagram of the present embodiment, two ends arrange the fastening bolt holes of relevant position according to the section optimal curve shape 12 of mild-steel energy-consumption sheet up and down, the design attitude of bolt hole is considered as consuming energy sheet by the change of shape after Cyclic Loading so that it is do not affect the deformation of power consumption sheet 1.
Fig. 5 is the L-type connecting cleat schematic diagram of the present embodiment, and two vertical surface all open bolt hole, and its position of opening and sectional dimension should be with reference to the position of opening of coupling beam anchor plate 4, and its surface carries out blasting treatment.
Fig. 6 is the coupling beam anchor plate schematic diagram of the present embodiment, and two row screwed holes 13 are offered on surface, and concrete reinforcing steel and shaped steel should be avoided in tapping position, arrange pre-buried anchor bar 9 and make it firmly be connected with concrete, and its surface carries out blasting treatment.
Embodiment 2
Fig. 7 is the section of structure of the present embodiment.Two pieces of mild-steel energy-consumption sheets 1 are in parallel, and each piece of mild-steel energy-consumption sheet 1 is sandwiched in two pieces of polyfluortetraethylene plates 5, and outermost arranges two pieces of anti-buckling clamping plate 2.In L-type connecting cleat position, in order to avoid the space between two pieces of mild-steel energy-consumption sheets, should fill one piece of clamping plate pad 11, polyfluortetraethylene plate 5 thickness between its thickness and two pieces of mild-steel energy-consumption sheets 1 is identical.Other structures are same as in Example 1.
Embodiment 3
Fig. 8 is the structural representation of the present embodiment.Antivibrator is placed on inter-layer position, the displacement changing of the relative positions between levels is utilized to promote antivibrator deformation power consumption, antivibrator upper end is connected in the Vierendeel girder on upper strata, lower end is connected buttress and connects with concrete, connect the part that buttress is structure, there are enough strength and stiffness, it is to avoid destroyed before antivibrator is surrendered.Antivibrator can be placed on buttress parallel connecting.Other structures are same as in Example 1.

Claims (4)

1. use the assembled mild steel damper that stress isobar optimizes, include: mild-steel energy-consumption sheet (1), anti- Flexing clamping plate (2), L-type connecting cleat (3), anchor plate (4), polyfluortetraethylene plate (5), in advance Compress fixing bolt (6), the high-strength connecting bolt of friction-type (7), caging bolt (8), pre-buried anchor bar (9), flexible packing material (10), clamping plate pad (11), the antivibrator line style (12) that stress isobar optimizes, Screwed hole (13), wherein, anchor plate (4) carries pre-buried anchor bar (9), anchor plate (4) to open Having screwed hole (13) in order to connect L-type connecting cleat (3), mild-steel energy-consumption sheet (1) is connected by L-type Clamping plate (3) are connected with anchor plate (4), and mild-steel energy-consumption sheet (1) is with L-type connecting cleat (3) even The place of connecing opens bolt hole, and is connected by the high-strength connecting bolt of friction-type (7), many groups mild-steel energy-consumption sheet (1) Time in parallel, arranging clamping plate pad (11), L-type connecting cleat (3) is connected with coupling beam anchor plate (4) Place opens bolt hole, connects also by the high-strength connecting bolt of friction-type (7), and anti-buckling clamping plate (2) are soft The vacancy of steel power consumption sheet (1) boundary curve arranges bolt hole, by pre-pressing fixing bolt (6) by soft Steel power consumption sheet (1) clamping, places polytetrafluoroethyl-ne between anti-buckling clamping plate (2) and mild-steel energy-consumption sheet (1) Alkene plate (5), mild-steel energy-consumption sheet (1) middle part arranges caging bolt (8) to position anti-buckling clamping plate (2), Its exterior one layer of flexible packing material (10) of parcel, it is characterised in that: in mild-steel energy-consumption sheet (1) Portion is shaped as the antivibrator line style (12) that stress isobar optimizes.
The assembled mild steel damper that employing stress isobar the most according to claim 1 optimizes, it is characterised in that Mild-steel energy-consumption sheet (1) is clamped by anti-buckling clamping plate (2) and polyfluortetraethylene plate (5) and forms anti-buckling machine System.
The assembled mild steel damper that employing stress isobar the most according to claim 1 optimizes, it is characterised in that Mild-steel energy-consumption sheet (1), with caging bolt (8), is used for limiting anti-buckling clamping plate (2) and polytetrafluoroethyl-ne The position of alkene plate (5).
The assembled mild steel damper that employing stress isobar the most according to claim 1 optimizes, it is characterised in that Mild-steel energy-consumption sheet (1), anti-buckling clamping plate (2), L-type connecting cleat (3), anchor plate (4) passes through The high-strength connecting bolt of friction-type (7) connects, it is simple to change.
CN201610317439.6A 2016-05-13 2016-05-13 The assembled mild steel damper optimized using stress isobar CN105926794B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107476631A (en) * 2017-06-09 2017-12-15 中国地震局工程力学研究所 Curved scissors separates control type assembling-type metal damper
CN110629899A (en) * 2019-09-27 2019-12-31 长沙理工大学 Energy dissipation damper based on tension-compression yielding of perforated steel plate

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JP5124146B2 (en) * 2007-01-19 2013-01-23 株式会社竹中工務店 Seismic control building
CN203891242U (en) * 2014-05-13 2014-10-22 同济大学 Replaceable rigid damping connecting beam
CN204298978U (en) * 2014-12-04 2015-04-29 郭小康 Two rank power consumption steel coupling beam
CN206053016U (en) * 2016-05-13 2017-03-29 中国地震局工程力学研究所 The assembled mild steel damper optimized using stress isobar

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Publication number Priority date Publication date Assignee Title
JPH10110550A (en) * 1996-10-04 1998-04-28 Ohbayashi Corp Structure of boundary beam
JP4565309B2 (en) * 2001-09-18 2010-10-20 清水建設株式会社 Boundary beam damper
JP5124146B2 (en) * 2007-01-19 2013-01-23 株式会社竹中工務店 Seismic control building
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JP2011256577A (en) * 2010-06-08 2011-12-22 Shimizu Corp Seismic control structure including viscoelastic damper
CN102433942A (en) * 2011-09-26 2012-05-02 中国地震局工程力学研究所 Method for using modular steel hysteresis damper
CN203891242U (en) * 2014-05-13 2014-10-22 同济大学 Replaceable rigid damping connecting beam
CN204298978U (en) * 2014-12-04 2015-04-29 郭小康 Two rank power consumption steel coupling beam
CN206053016U (en) * 2016-05-13 2017-03-29 中国地震局工程力学研究所 The assembled mild steel damper optimized using stress isobar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107476631A (en) * 2017-06-09 2017-12-15 中国地震局工程力学研究所 Curved scissors separates control type assembling-type metal damper
CN107476631B (en) * 2017-06-09 2019-12-06 中国地震局工程力学研究所 Bending shear separation control type assembled metal damper
CN110629899A (en) * 2019-09-27 2019-12-31 长沙理工大学 Energy dissipation damper based on tension-compression yielding of perforated steel plate

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