CN104455189A - Three-dimensional isolation support - Google Patents

Three-dimensional isolation support Download PDF

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Publication number
CN104455189A
CN104455189A CN201410595648.8A CN201410595648A CN104455189A CN 104455189 A CN104455189 A CN 104455189A CN 201410595648 A CN201410595648 A CN 201410595648A CN 104455189 A CN104455189 A CN 104455189A
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CN
China
Prior art keywords
viscous fluid
effects
fluid damper
connecting plate
vertical
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Pending
Application number
CN201410595648.8A
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Chinese (zh)
Inventor
李爱群
王骁宇
王维
赵帅
李大强
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Southeast University
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Southeast University
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Application filed by Southeast University filed Critical Southeast University
Priority to CN201410595648.8A priority Critical patent/CN104455189A/en
Publication of CN104455189A publication Critical patent/CN104455189A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/002Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising at least one fluid spring
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/08Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
    • 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
    • E04H9/0215Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/30Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
    • F16F9/303Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium the damper being of the telescopic type
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0001Rubbers

Abstract

The invention discloses a three-dimensional isolation support. The three-dimensional isolation support comprises a lower connecting plate (1), a horizontal isolation support body (3), an intermediate connecting plate (2), a disc spring vertical isolation device and an upper connecting plate (4) which are arranged from bottom to top in sequence. Vertical isolation is achieved through a viscous fluid damper, a disc spring set, multiple connecting plates, a guiding rod, a limiting bolt, an annular spring and other auxiliary devices, and the connecting plates, the guiding rod, the limiting bolt and the annular spring guarantee the normal conducting of vertical isolation. A traditional isolation support is improved due to the adoption of vertical isolation, vertical vibration and small vertical earthquakes can be resisted, and the structure has certain vertical vibration (earthquake) isolating ability.

Description

A kind of three-dimensional shock isolation support
Technical field
The present invention relates to house architectural structure basic field, be specifically related to a kind of three-dimensional shock isolation support, for the vibration isolation application of the earthquake resistant design of the less multi-layer construction structure of quality and the equipment and instrument to the less vibration sensing of quality.
Background technique
Base isolation is a kind of seismic isolation technology for house architectural structure basis developed in the last few years, is characterized in that effectively cutting off horizontal earthquake action is passed to superstructure by basis, reduces the horizontal vibration of superstructure with this.Existing product is mainly General Purpose Rubber damping support, lead rubber laminated bearing, high-damp rubber support etc.Various damping support product extensively should in the antidetonation application of multi-story and high-rise building structure.Though the research of multi-dimensional earthquake has obtained some breakthroughs, be applied to put into practice less; And the theory being applied in the seismic analysis of structures of engineering practice of comparative maturity has reached three-dimensional level at present, so the base isolation research of structure under 3-D seismics effect is particularly important.Under 3-D seismics effect, because the requirement of building structure vertical rigidity and vertical earthquake isolating have conflict, the shock-proof device at present for vertical earthquake isolating is less, and the shock-proof device of the research of present stage, the test employing also shock insulation being confined to the earthquake of substantially horizontal more.The present invention, on the basis of conventional flat damping support, constructs a kind of compound support that can be used in three-dimensional isolation, is a kind of effective means solving a structure vertical earthquake isolating difficult problem.
Earthquake disaster brings immeasurable loss of life and property to the mankind, and base isolation system is between superstructure and basis, arrange certain shock-absorbing and energy-dissipating device, to reduce the transmission of seismic energy to top, reaches the object reducing structural vibration.
The technical research of building foundation horizontal seismic isolation has achieved the achievement attracted people's attention, and has been widely used in engineering practice.But the shock insulation research of the vertical motion that vertical seismic action causes is but relatively very less.In Practical Project, the Seismic Isolation of Isolation Layer of building provides vertical stability to support for superstructure, and it is difficult for significantly reducing vertical rigidity.So the difficult point of building vertical earthquake isolating design is how while guarantee provides effective vertical support for superstructure, increase substantially the vertical cycle of structure after shock insulation.Vertical rigidity due to structure requires and vertical earthquake isolating function has conflict, so the present invention designs mainly for the multi-storey building of little quality.
Simultaneously in industrial production and scientific research, some equipment and instrument is very responsive for microvibration (vibration, Subway Vibration etc. that the vibration caused as machine motor, outdoor vehicle cause), and minimum vibration also can disturb the normal operation of these equipment and instruments.These microvibrations also comprise horizontal vibration and vertical motion, but different from geological process, and these microvibration amplitudes are less, and frequency is larger.Common damping support is performed poor for reduction dither, also needs to develop corresponding seismic isolation technology to ensure the normal work of these equipment and instruments.
In sum, exploitation one can simultaneously level of isolation geological process and Vertical Earthquake Loads, also can be used for level of isolation and have important theory significance and application value realistic to the three-dimensional shock isolation support vibrated with vertical frequency low-amplitude after adjustment parameter.
Summary of the invention
The vertical earthquake isolating problem that method effectively solves is there is no for current common horizontal damping support, the invention provides a kind of compact structure, there is the three-dimensional shock isolation support of level and vertical earthquake isolating ability simultaneously, this three-dimensional shock isolation support has good energy dissipation capacity with vertical direction in the horizontal direction simultaneously, and has necessary vertical tensility.
In order to realize such scheme, the technical solution used in the present invention is:
Three-dimensional shock isolation support of the present invention comprises the lower connecting plate, horizontal seismic isolation bearing, middle connecting plate, belleville spring vertical earthquake isolating equipment and the upper junction plate that set gradually from bottom to up.
Described belleville spring vertical earthquake isolating equipment comprises from inside to outside Effects of Viscous Fluid Damper, belleville spring and the some guiding guide rods that concentric is successively arranged.
Described Effects of Viscous Fluid Damper comprises Effects of Viscous Fluid Damper piston, viscous fluids, Effects of Viscous Fluid Damper urceolus, pilot sleeve and annular spring; The described upper end of Effects of Viscous Fluid Damper urceolus is connected with the lower surface of upper junction plate; Described Effects of Viscous Fluid Damper piston is arranged in Effects of Viscous Fluid Damper urceolus, is positioned at Effects of Viscous Fluid Damper center, and the upper surface of the lower end of described Effects of Viscous Fluid Damper piston and described middle connecting plate is rigidly connected; Annular damping hole is provided with between described Effects of Viscous Fluid Damper urceolus and Effects of Viscous Fluid Damper piston; Described pilot sleeve is arranged at described middle connecting plate upper surface; Described annular spring is provided with in described pilot sleeve, described annular spring one end contacts with middle connecting plate upper surface, the other end of annular spring and the lower end in contact of described Effects of Viscous Fluid Damper urceolus, described Effects of Viscous Fluid Damper urceolus can move up and down in described pilot sleeve; Viscous fluids is filled, for the to-and-fro motion of described Effects of Viscous Fluid Damper piston in described Effects of Viscous Fluid Damper urceolus provides viscous damping between described Effects of Viscous Fluid Damper piston and Effects of Viscous Fluid Damper urceolus.
Described guiding guide rod is connected by the lower surface of fixing bolt with described upper junction plate, and described guiding guide rod runs through the pilot hole of described middle connecting plate, and arranges caging bolt at described guiding lower end of the guide rod.
Horizontal seismic isolation bearing is high-damping rubber damping support.
The belleville spring vertical earthquake isolating equipment arranged between described middle connecting plate and upper junction plate is one or more groups.
Under Vertical Earthquake Loads, Effects of Viscous Fluid Damper piston and middle connecting plate are rigidly connected, and middle connecting plate 2 can drive damper piston to move at vertical direction, and piston can cause the flowing of viscous fluids in damper when vertical to-and-fro motion.Viscous fluids to the flowing of the opposite direction of Effects of Viscous Fluid Damper piston movement, produces viscous damping force from annular damping hole, hinders Effects of Viscous Fluid Damper piston movement.Effects of Viscous Fluid Damper also can adjust the adjustment damping forces such as viscous fluids kind, damping hole quantity and diameter according to demand and exert oneself.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention, under the prerequisite ensureing damping support horizontal seismic isolation ability, improves the vertical earthquake isolating ability of damping support by setting up belleville spring group and Effects of Viscous Fluid Damper.An existing vertical earthquake isolating bearing usually employing belleville spring group carries out vertical earthquake isolating, and vertical earthquake isolating is limited in one's ability.Invention utilizes the space in the middle part of belleville spring group, add Effects of Viscous Fluid Damper, between the Effects of Viscous Fluid Damper urceolus and Effects of Viscous Fluid Damper piston of Effects of Viscous Fluid Damper, annular damping hole is set, under Vertical Earthquake Loads, viscous fluids flows from annular damping hole to the opposite direction of Effects of Viscous Fluid Damper piston movement, produce viscous damping force, hinder Effects of Viscous Fluid Damper piston movement; Therefore Effects of Viscous Fluid Damper has good energy dissipating ability.The present invention adopts belleville spring group and Effects of Viscous Fluid Damper two kinds of modes to ensure vertical earthquake isolating ability, and compact structure of the present invention.
Accompanying drawing explanation
Fig. 1 is novel three-dimensional damping support schematic diagram of the present invention;
Fig. 2 is novel three-dimensional damping support plan view of the present invention;
Fig. 3 is novel three-dimensional damping support A-A schematic cross-section of the present invention;
Fig. 4 is novel three-dimensional damping support B-B schematic cross-section of the present invention.
In figure: 1, lower connecting plate, 2, middle connecting plate, 3, horizontal seismic isolation bearing, 4, upper junction plate, 5, belleville spring, 6, Effects of Viscous Fluid Damper piston, 7, viscous fluids, 8, Effects of Viscous Fluid Damper urceolus, 9, lead guide rod, and 10, fixing bolt, 11, caging bolt, 12, pilot sleeve, 13, annular spring.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed.
As shown in Figure 1,2,3, 4, three-dimensional shock isolation support of the present invention comprises lower connecting plate 1, middle connecting plate 2, horizontal seismic isolation bearing 3, upper junction plate 4, belleville spring 5, Effects of Viscous Fluid Damper piston 6, viscous fluids 7, Effects of Viscous Fluid Damper urceolus 8, guiding guide rod 9, fixing bolt 10, caging bolt 11, pilot sleeve 12, annular spring 13.
As shown in Figure 1, middle connecting plate 2 is rigidly connected with Effects of Viscous Fluid Damper piston 6, and middle connecting plate 2 and Effects of Viscous Fluid Damper piston 6 can to-and-fro motion simultaneously.Have an annular pilot sleeve 12 inside middle connecting plate 2, can be socketed Effects of Viscous Fluid Damper urceolus 8, urceolus is lined with annular spring 13 8 times.Horizontal seismic isolation bearing 3 is connected by middle connecting plate 2 with belleville spring 5.Guiding guide rod 9 upper end is fixed on upper junction plate 4 by fixing bolt 10, and the lower end of guiding guide rod 9 is connected with middle connecting plate 2 by caging bolt 11, and caging bolt 11 does not limit the motion of guide rod, but can retrain the maximum displacement of guide rod motion.
As shown in figures 1 and 3, many group belleville springs 5 are provided with between described middle connecting plate 2 and upper junction plate 4, belleville spring 5 center arranges cylindrical shape Effects of Viscous Fluid Damper, cylindrical shape Effects of Viscous Fluid Damper and middle connecting plate 2 are rigidly connected, annular spread some guiding guide rods 9 are set in upper junction plate 4 and middle connecting plate 2, guiding guide rod 9 adopts caging bolt 11 to be connected with middle connecting plate 2, adopts fixing bolt 10 to be rigidly connected with upper junction plate 4.A ring spacing collar is had inside upper junction plate 4.Effects of Viscous Fluid Damper urceolus 8 packs in the pilot sleeve of upper junction plate, is lined with an annular spring 13 under urceolus, makes upper junction plate 4 and the activity smoothly of Effects of Viscous Fluid Damper piston 6 energy.Belleville spring center arranges a cylindrical Effects of Viscous Fluid Damper, piston 6 and middle connecting plate 2 is had to be rigidly connected in damper, damper is built with the viscous fluids 7 of high damping, piston 6 to-and-fro motion in viscous fluids 7 of Effects of Viscous Fluid Damper, piston 6 can move together along with upper junction plate 2, by belleville spring 5 between frictional damping and the vertical to-and-fro motion of the viscous damping of Effects of Viscous Fluid Damper consume the energy of Vertical Earthquake Loads.
As shown in Figure 4, horizontal seismic isolation bearing 3 adopts high-damping rubber, is mainly used in the geological process in level of isolation direction.High-damping rubber has higher damping ratio, can the seismic energy in effective consumption level direction.The vertical rigidity of high-damp rubber support is all comparatively large, and can not isolate the vertical motion effect that vertical seismic action and subway effect cause, vertical seismic action will pass to the belleville spring 5 on top.Horizontal seismic isolation bearing 3 top is connected with middle connecting plate 2, and bottom is connected with lower connecting plate 4.
When the present invention only having structural load there is no geological process, high damping horizontal seismic isolation bearing 3 pressurized of the present invention produces certain deformation.On the earthquake resistant design being useful in the less multi-layer construction structure of quality due to the present invention and equipment and instrument to the less vibration sensing of quality, annular spring 13 under Effects of Viscous Fluid Damper urceolus 8 and Effects of Viscous Fluid Damper urceolus 8 has enough vertical rigidities to bear the weight of house, top or instrument, although belleville spring 5 and Effects of Viscous Fluid Damper piston 6 also vertical displacement can occur, compression damage can't be there is.Meanwhile, adjust the weight of annular spring 13 according to the concrete load of superstructure, can ensure that vertical earthquake isolating system can not lose vertical earthquake isolating effect because of upper load compacting.
Under Vertical Earthquake Loads, high damping horizontal seismic isolation bearing 3 of the present invention due to vertical rigidity comparatively large, vertical earthquake isolating ability is poor.The belleville spring pressurized on top or tension generation vertical displacement, therefore also there is vertical displacement in the Effects of Viscous Fluid Damper piston 6 in Effects of Viscous Fluid Damper, reciprocating in viscous fluids, by the viscous damping consumed energy of viscous fluids.Meanwhile, the belleville spring of belleville spring in vertical pressurized and tension, therefore can produce friction between belleville spring, and a part of vertical seismic action energy is dissipated by the frictional damping of belleville spring.In order to avoid destroying because of excessive belleville spring or the Effects of Viscous Fluid Damper of making of geological process, when central connecting plate 2 drives Effects of Viscous Fluid Damper piston 6 to produce vertical movement, the displacement of connecting plate 2 during caging bolt 11 and annular spring 13 can limit, ensure that bearing does not produce excessive vertical displacement, prevent it from destroying.
Under Vertical Earthquake Loads, Effects of Viscous Fluid Damper piston 6 and middle connecting plate 2 are rigidly connected, and middle connecting plate 2 can drive damper piston 6 to move at vertical direction, and piston 6 can cause the flowing of viscous fluids 7 in damper when vertical to-and-fro motion.Viscous fluids 7 can select the full-bodied liquid of high-consistency (as silicone oil etc.).Viscous fluids to the flowing of the opposite direction of Effects of Viscous Fluid Damper piston movement, produces viscous damping force from annular damping hole, hinders Effects of Viscous Fluid Damper piston movement.Effects of Viscous Fluid Damper also can adjust the adjustment damping forces such as viscous fluids kind, damping hole quantity and diameter according to demand and exert oneself.
Under horizontal earthquake action, geological process first imports high-damping rubber damping support 3 into, and high-damping rubber layer and steel plate, under horizontal earthquake action, shear deformation occurs, and consumes more seismic energy, and the geological process passed toward top vertical earthquake isolating system is not too large.Because cylindrical shape Effects of Viscous Fluid Damper urceolus 8 in vertical earthquake isolating system and guiding guide rod 9 have certain horizontal rigidity, the shear action transmitting the horizontal earthquake come can be resisted.Vertical earthquake isolating system can not produce larger horizontal relative displacement.
According to the requirement of Code for seismic design of buildings (GB50011-2010), in the horizontal and vertical direction under geological process, common damping support allows the tensile stress of bearing 1MPa.But when bearing tensile stress, belleville spring and upper junction plate 4 are thrown off.In order to prevent this situation, middle connecting plate 2 comes in contact with caging bolt 11, avoids overall collapse of the present invention.
Described guiding guide rod 9 should smear low-friction material (as graphite, teflon etc.) with the surface of contact of middle connecting plate 2 hole wall, reduce the friction that guiding guide rod 9 vertically slides, the pilot sleeve of described upper junction plate 4 and the surface of contact of cylindrical shape Effects of Viscous Fluid Damper urceolus 8 also should smear low-friction material, reduce the frictional force between belleville spring and Effects of Viscous Fluid Damper urceolus 8.

Claims (3)

1. a three-dimensional shock isolation support, is characterized in that, comprises the lower connecting plate (1), horizontal seismic isolation bearing (3), middle connecting plate (2), belleville spring vertical earthquake isolating equipment and the upper junction plate (4) that set gradually from bottom to up;
Described belleville spring vertical earthquake isolating equipment comprises from inside to outside Effects of Viscous Fluid Damper, belleville spring (5) and the some guiding guide rods (9) that concentric is successively arranged;
Described Effects of Viscous Fluid Damper comprises Effects of Viscous Fluid Damper piston (6), viscous fluids (7), Effects of Viscous Fluid Damper urceolus (8), pilot sleeve (12) and annular spring (13); The upper end of described Effects of Viscous Fluid Damper urceolus (8) is connected with the lower surface of upper junction plate (4); Described Effects of Viscous Fluid Damper piston (6) is arranged in Effects of Viscous Fluid Damper urceolus (8), is positioned at Effects of Viscous Fluid Damper center, and the upper surface of the lower end of described Effects of Viscous Fluid Damper piston (6) and described middle connecting plate (2) is rigidly connected; Annular damping hole is provided with between described Effects of Viscous Fluid Damper urceolus (8) and Effects of Viscous Fluid Damper piston (6); Described pilot sleeve (12) is arranged at described middle connecting plate (2) upper surface; Described annular spring (13) is provided with in described pilot sleeve (12), described annular spring (13) one end contacts with middle connecting plate (2) upper surface, the other end of annular spring (13) and the lower end in contact of described Effects of Viscous Fluid Damper urceolus (8), described Effects of Viscous Fluid Damper urceolus (8) can move up and down in described pilot sleeve (12); Viscous fluids (7) is filled between described Effects of Viscous Fluid Damper piston (6) and Effects of Viscous Fluid Damper urceolus (8);
Described guiding guide rod (9) is connected by the lower surface of fixing bolt (10) with described upper junction plate (4), and described guiding guide rod (9) runs through the pilot hole of described middle connecting plate (2), and caging bolt (11) is set in described guiding guide rod (9) lower end.
2. three-dimensional shock isolation support according to claim 2, is characterized in that, horizontal seismic isolation bearing (3) is high-damping rubber damping support.
3. three-dimensional shock isolation support according to claim 1, is characterized in that, the belleville spring vertical earthquake isolating equipment arranged between described middle connecting plate (2) and upper junction plate (4) is one group and many groups.
CN201410595648.8A 2014-10-30 2014-10-30 Three-dimensional isolation support Pending CN104455189A (en)

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CN105735367A (en) * 2016-03-07 2016-07-06 山东大学 Multi-dimensional damping control device for pile foundation
CN105757161A (en) * 2015-12-09 2016-07-13 厦门嘉达环保建造工程有限公司 Forging hammer displacement limiting damper
CN106090115A (en) * 2016-06-15 2016-11-09 哈尔滨工程大学 High linearity quasi-zero stiffness vibration isolators
CN106498846A (en) * 2016-12-12 2017-03-15 南京工大交通科技有限公司 One kind can the multidirectional energy-consumption damper of the especially big tonnage of shock resistance
CN106595732A (en) * 2016-11-22 2017-04-26 何英 Shockproof instrument
CN106639468A (en) * 2016-11-16 2017-05-10 天津城建大学 Three-dimensional vibration-insulation supporting seat of fiber magnetorheological fluid particles
CN106678264A (en) * 2016-12-29 2017-05-17 北京建筑大学 Critical unlocking vertical isolation bearing and method thereof
CN106760888A (en) * 2016-11-24 2017-05-31 国网河南省电力公司周口供电公司 Shockproof shaft tower
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CN105757161A (en) * 2015-12-09 2016-07-13 厦门嘉达环保建造工程有限公司 Forging hammer displacement limiting damper
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CN105735367A (en) * 2016-03-07 2016-07-06 山东大学 Multi-dimensional damping control device for pile foundation
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