CN207905124U - A kind of energy dissipating-frame support structure - Google Patents

A kind of energy dissipating-frame support structure Download PDF

Info

Publication number
CN207905124U
CN207905124U CN201721376056.2U CN201721376056U CN207905124U CN 207905124 U CN207905124 U CN 207905124U CN 201721376056 U CN201721376056 U CN 201721376056U CN 207905124 U CN207905124 U CN 207905124U
Authority
CN
China
Prior art keywords
supporting rod
lead
frame
support structure
viscoelastic damper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201721376056.2U
Other languages
Chinese (zh)
Inventor
周云
房晓俊
张超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou University
Original Assignee
Guangzhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou University filed Critical Guangzhou University
Priority to CN201721376056.2U priority Critical patent/CN207905124U/en
Application granted granted Critical
Publication of CN207905124U publication Critical patent/CN207905124U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides a kind of energy dissipating frame support structure, it includes lead viscoelastic damper, supporting rod, multiple Vierendeel girders and multiple frame columns, each Vierendeel girder forms a rectangular frame with multiple nodes with each frame column, the supporting rod is detachably connected on the inner wall of the Vierendeel girder, and the lead viscoelastic damper is detachably connected with the supporting rod.The energy dissipating frame support structure of the utility model mainly forms a rectangular frame by Vierendeel girder and frame column, which has stronger plastic deformation ability;Supporting rod is installed in the inside of rectangular frame again and improves structural bearing capacity and lateral rigidity to enhance; finally; energy consumption is deformed using the shearing lag return of the lead for retractable pencil shearing of lead viscoelastic damper, crimp energy consumption and viscous-elastic material; the seismic energy so that it dissipates in violent earthquake; the safety of agent structure is protected, and enough lateral rigidities can be provided under the action of small shake and wind load for structure.

Description

A kind of energy dissipating-frame support structure
Technical field
The utility model is related to a kind of building structure dissipative members, and in particular to a kind of energy dissipating-frame support structure.
Background technology
Unbraced frames are also known as moment resisting, the advantage is that column network arrangements are flexible, ductility is good, and plastic deformation ability is strong.But it is pure Frame is single Lateral Resistant System, and anti-side rigidity is limited, and larger lateral deformation is also easy to produce under horizontal earthquake action and is caused non- The serious destruction even structure total Collapse of structural elements, the warning of collapsing of a large amount of reinforced concrete frame structures in Wenchuan earthquake We must pay attention to the anti-fall performance study that collapses of frame structure.But band column braces armored concrete in part in Wenchuan earthquake Frame structure successfully resist super large earthquake experience have shown that, vertical supporting is set between frame segment trestle, is formed several Pin band braced frames, can improve the collapse resistant capacity of frame structure.Therefore, the research Yu use of frame-support construction for The shock resistance for improving multi-rise building object has a very important significance.
Frame-support construction is a kind of very common structure type, so-called frame-in multi and tall steel building building Support construction is to improve structural bearing capacity and side by arranging support between frame segment trestle on the basis of frame structure To rigidity.Support system and frame system cooperatively form dual lateral resisting structure system, this be not only structure normally by Certain rigidity is provided in the case of power, also provided under horizontal earthquake action and larger wind action for structure twice by Power defence line forms ideal failure mechanism.
However the twice stress defence line constructed by frame-support construction is to resist external loads, branch from the angle of " anti-" Support component is easy to happen unstability outside plane under reciprocal horizontal external effect and destroys, and is unfavorable for the energy-dissipating and shock-absorbing of structure.
Invention content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of energy dissipating-frame support structure, this disappears Energy-frame support structure can either effectively dissipate the seismic energy of input structure in violent earthquake, protect the peace of agent structure Entirely, and enough lateral rigidities can be provided for structure under the action of small shake and wind load.
Based on this, the utility model proposes a kind of energy dissipating-frame support structures comprising lead viscoelastic damper, branch Strut, multiple Vierendeel girders and multiple frame columns, each Vierendeel girder forms one with each frame column has multiple nodes Rectangular frame, the supporting rod is detachably connected on the inner wall of the Vierendeel girder, the lead viscoelastic damper with it is described Supporting rod is detachably connected.
Optionally, the supporting rod is single diagonal-bracing type supporting rod, the both ends of the supporting rod respectively with the rectangular frame On two corner node is detachably connected, and the mounting portion there are one open-type, the lead viscoelasticity are set on the supporting rod Damper is detachably connected with the mounting portion.
Optionally, the supporting rod is herringbone bridging formula supporting rod, the both ends of the supporting rod respectively with the rectangular frame On two adjacent nodes be detachably connected, connecting rod, the both ends of the connecting rod are installed on the lug boss of the supporting rod Be respectively connected with the lead viscoelastic damper, and one end of each lead viscoelastic damper respectively on the rectangular frame Other two adjacent node is detachably connected.
Optionally, the supporting rod is wall pier formula supporting rod, and the both ends of the supporting rod are detachably connected on each institute respectively It states on Vierendeel girder, and sets the mounting portion there are one open-type on the supporting rod, the lead viscoelastic damper and the installation Portion is detachably connected.
Optionally, the lead viscoelastic damper includes connecting rod and several groups damper assembly, and the two of the damper assembly End is rotatably connected with the connecting rod.
Optionally, the damper assembly includes viscoelasticity layer, shearing steel plate, constraint steel plate and axis pin, the viscoelasticity Layer respectively with the shearing steel plate and the constraint steel plate by vulcanization integrally, the viscoelasticity layer, shearing steel plate and Constraint steel plate is linked together by the axis pin.
Optionally, the viscoelasticity layer includes multiple viscoelasticity rubber layers and multiple sheet metals, multiple viscoelasticity rubbers Glue-line is superimposed with multiple sheet metals and is fixedly connected.
Optionally, the lead viscoelastic damper is lead viscoelastic damper or common viscoelastic damper.
Optionally, the lead viscoelastic damper further includes lead for retractable pencil and lead for retractable pencil capping, and the lead for retractable pencil is from the viscoelasticity layer Reserving hole be inserted in, lead for retractable pencil capping is bolted with the constraint steel plate.
Implement the utility model embodiment, has the advantages that:
Energy dissipating-the frame support structure of the utility model mainly forms a rectangular frame by Vierendeel girder and frame column, The rectangular frame has stronger plastic deformation ability, meanwhile, then supporting rod is installed in the inside of rectangular frame and is carried to enhance Lead viscoelastic damper finally connect with supporting rod, utilizes lead viscoelastic damper by high structural bearing capacity and lateral rigidity The shearing lag return deformation energy consumption of lead for retractable pencil shearing, crimp energy consumption and viscous-elastic material so that the energy dissipating-frame support structure Can be in violent earthquake by rectangular frame and the rigidity of supporting rod retainer body structure, and effectively hindered using lead viscoelasticity The seismic energy of the deformation dissipation input structure of Buddhist nun's device protects the safety of agent structure, and can be in the effect of small shake and wind load Structure increases its lateral rigidity based on lower utilization rectangular frame and supporting rod, meanwhile, lead viscoelastic damper can be very Shear-deformable energy consumption is just generated under thin tail sheep, and has preferable fatigue performance energy consumption effect good under long-term wind load, energy The safety of enough agent structures of protection well;Since the cooperation installation between supporting rod and lead viscoelastic damper is detachable Connection, therefore so that a kind of energy dissipating-frame support structure of the utility model is easy for installation in Practical Project, does not influence to build It builds and uses function, and be easy to repair and replace after shaking, be suitable for frame building structure damping, earthquake structural engineering field.
Description of the drawings
Fig. 1 is the structural schematic diagram of the energy dissipating-frame support structure of the preferred embodiment in the utility model one;
Fig. 2 is the structural schematic diagram of the energy dissipating-frame support structure of the preferred embodiment in the utility model two;
Fig. 3 is the structural schematic diagram of the energy dissipating-frame support structure of the preferred embodiment in the utility model three;
Fig. 4 is that the structure of the lead viscoelastic damper of the energy dissipating-frame support structure of the preferred embodiment in the utility model is shown It is intended to;
Fig. 5 is that the A-A of the lead viscoelastic damper of the energy dissipating-frame support structure of the preferred embodiment in the utility model shows It is intended to;
Fig. 6 is the first kind composite lead viscoelasticity resistance of the energy dissipating-frame support structure of the preferred embodiment in the utility model The structural schematic diagram of Buddhist nun's device;
Fig. 7 is the second class composite lead viscoelasticity resistance of the energy dissipating-frame support structure of the preferred embodiment in the utility model The structural schematic diagram of Buddhist nun's device.
Reference sign:
1, lead viscoelastic damper;11, connecting rod;12, damper assembly;121, viscoelasticity layer;122, shearing steel plate;123、 Constrain steel plate;124, axis pin;2, supporting rod;3, Vierendeel girder;4, frame column;5, rectangular frame;6, connecting rod.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figures 1 to 4, the preferred a kind of energy dissipating-frame support structure of the utility model comprising lead viscoelasticity damps Device 1, supporting rod 2, multiple Vierendeel girders 3 and multiple frame columns 4, each Vierendeel girder 3 form a tool with each frame column 4 There are the rectangular frame 5 of multiple nodes, the supporting rod 2 to be detachably connected on the inner wall of the Vierendeel girder 3, the lead viscoelasticity Damper 1 is detachably connected with the supporting rod 2.
Based on the above-mentioned technical proposal, a kind of energy dissipating-frame support structure of the preferred embodiment in the utility model, mainly by Vierendeel girder 3 and frame column 4 form a rectangular frame 5, which has stronger plastic deformation ability, meanwhile, then The inside of rectangular frame 5 is equipped with supporting rod 2 and finally hinders lead viscoelasticity to enhance raising structural bearing capacity and lateral rigidity Buddhist nun's device 1 is connect with supporting rod 2, utilizes the shearing of 1 lead for retractable pencil of lead viscoelastic damper, crimp energy consumption and viscous-elastic material Shearing lag return deformation energy consumption so that the energy dissipating-frame support structure can pass through rectangular frame 5 and supporting rod in violent earthquake The rigidity of 2 retainer body structures, and the seismic energy of the effective deformation dissipation input structure using lead viscoelastic damper 1, It protects the safety of agent structure, and can tie in small shake and using based on rectangular frame 5 and supporting rod 2 under the action of wind load Structure increases its lateral rigidity, meanwhile, lead viscoelastic damper 1 can just generate shear-deformable energy consumption under very little displacement, and Have preferable fatigue performance energy consumption effect good under long-term wind load, can be good at the safety for protecting agent structure;Due to Cooperation installation between supporting rod 2 and lead viscoelastic damper 1 is to be detachably connected, therefore so that the utility model disappears Energy-frame support structure is easy for installation in Practical Project, does not influence building uses function, and is easy to repair and replace after shaking, Suitable for frame building structure damping, earthquake structural engineering field.
In the present embodiment, specifically, as shown in Figure 1, rectangular frame 5 is to pass power often by its node in stress It is delivered on frame column 4 and Vierendeel girder 3, but also being susceptible to destroy at its node, therefore, the supporting rod 2 is designed as list The both ends of diagonal-bracing type supporting rod, the supporting rod 2 are respectively detachably connected corner node with two on the rectangular frame 5, And mounting portion there are one open-type is set on the supporting rod 2, the lead viscoelastic damper 1 detachably connects with the mounting portion Connect, in this way can either under the action of by external force (such as:Earthquake, wind load etc.) ensure agent structure safety, also may be used Effectively to utilize the seismic energy of the deformation dissipation input structure of lead viscoelastic damper 1.
In the present embodiment, specifically, as shown in Fig. 2, the supporting rod 2 is herringbone bridging formula supporting rod, the supporting rod 2 Both ends are detachably connected with two adjacent nodes on the rectangular frame 5 respectively, fixed peace on the lug boss of the supporting rod 2 Equipped with connecting rod 6, the both ends of the connecting rod 6 are respectively connected with the lead viscoelastic damper 1, and each lead viscoelastic damper 1 One end be detachably connected respectively with other two adjacent node on the rectangular frame 5, fix two sections using supporting rod 2 The promise rigidity of rectangular frame 5, also by one end of each lead viscoelastic damper 1 respectively on the rectangular frame 5 Other two adjacent node connection so that its under the action of by external force (such as:Earthquake, wind load etc.) ensure main body The safety of structure, it is possibility to have the seismic energy of the deformation dissipation input structure using lead viscoelastic damper 1 of effect.
In the present embodiment, specifically, as shown in figure 3, the supporting rod 2 is wall pier formula supporting rod, the two of the supporting rod 2 End is detachably connected on respectively on each Vierendeel girder 3, and the mounting portion there are one open-type is set on the supporting rod 2, described Lead viscoelastic damper 1 is detachably connected with the mounting portion.
In the present embodiment, specifically, as shown in Figures 4 and 5, the lead viscoelastic damper 1 includes connecting rod 11 and several Group damper assembly 12, the both ends of the damper assembly 12 are rotatably connected with the connecting rod 11 so that lead viscoelasticity hinders Buddhist nun's device 1 can pass through the rotatable progress energy dissipating between connecting rod 11 and damper assembly 12 when by external force;The damping Component 12 includes viscoelasticity layer 121, shearing steel plate 122, constraint steel plate 123 and axis pin 124, and the viscoelasticity layer 121 is distinguished With the shearing steel plate 122 and the constraint steel plate 123 by vulcanizing integrally, the viscoelasticity layer 121, shearing steel plate 122 and constraint steel plate 123 linked together by the axis pin 124.The viscoelasticity layer 121 includes multiple viscoelasticity rubber Layer and multiple sheet metals, multiple viscoelasticity rubber layers are superimposed with multiple sheet metals to be fixedly connected;Mainly make Obtaining lead viscoelastic damper 1, there is the shearing lag return deformation of lead for retractable pencil shearing, crimp energy consumption and viscous-elastic material to consume energy Performance.The lead viscoelastic damper 1 is preferably lead viscoelastic damper or common viscoelastic damper;The lead viscoelasticity resistance Buddhist nun's device further includes lead for retractable pencil and lead for retractable pencil capping, and the lead for retractable pencil is inserted in from the reserving hole of the viscoelasticity layer, the lead for retractable pencil capping with The constraint steel plate 123 is bolted, this ensure that the shearing of the lead for retractable pencil of lead viscoelastic damper 1 is consumed with crimp The deformation energy consumption of the shearing lag return of energy and viscous-elastic material;As shown in Figures 6 and 7, multiple damper assemblies 12 can also be designed as Composite lead viscoelastic damper, such as:Multiple damper assemblies are glutinous by the first kind composite lead of connecting rod group quadrangularly Damper the second ekalead viscoelastic damper etc. of elastic damper or multiple quadrangles.
In conclusion energy dissipating-the frame support structure of the utility model mainly forms one by Vierendeel girder 3 and frame column 4 A rectangular frame 5, the rectangular frame 5 have stronger plastic deformation ability, meanwhile, then be equipped in the inside of rectangular frame 5 Lead viscoelastic damper 1 is finally connect by supporting rod 2 to enhance raising structural bearing capacity and lateral rigidity with supporting rod 2, profit Energy consumption is deformed with the shearing lag return of the lead for retractable pencil shearing of lead viscoelastic damper 1, crimp energy consumption and viscous-elastic material so that Energy dissipating-the frame support structure can in violent earthquake by the rigidity of 2 retainer body structure of rectangular frame 5 and supporting rod, And the seismic energy of the effective deformation dissipation input structure using lead viscoelastic damper 1, the safety of agent structure is protected, again In small shake and its lateral rigidity can be increased using structure based on rectangular frame 5 and supporting rod 2 under the action of wind load, together When, lead viscoelastic damper 1 can just generate shear-deformable energy consumption under very little displacement, and have preferably under long-term wind load Fatigue performance energy consumption effect it is good, can be good at protect agent structure safety;Since supporting rod 2 and lead viscoelasticity damp Cooperation installation between device 1 is to be detachably connected, therefore so that the energy dissipating-frame support structure of the utility model is in reality It is easy for installation in engineering, do not influence building use function, and shake after be easy to repair and replace, subtract suitable for frame building structure Shake, earthquake structural engineering field.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, without departing from the principle of this utility model, several improvement and deformations can also be made, these improve and become Shape is also considered as the scope of protection of the utility model.

Claims (8)

1. a kind of energy dissipating-frame support structure, which is characterized in that including lead viscoelastic damper, supporting rod, multiple Vierendeel girders with And multiple frame columns, each Vierendeel girder form a rectangular frame with multiple nodes, the branch with each frame column Strut is detachably connected on the inner wall of the Vierendeel girder, and the lead viscoelastic damper is detachably connected with the supporting rod; The lead viscoelastic damper includes connecting rod and several groups damper assembly, and the both ends of the damper assembly rotatably connect There is the connecting rod.
2. energy dissipating-frame support structure as described in claim 1, which is characterized in that the supporting rod is that single diagonal-bracing type supports The both ends of bar, the supporting rod are respectively detachably connected corner node with two on the rectangular frame, and the supporting rod On set mounting portion there are one open-type, the lead viscoelastic damper is detachably connected with the mounting portion.
3. energy dissipating-frame support structure as described in claim 1, which is characterized in that the supporting rod supports for herringbone bridging formula The both ends of bar, the supporting rod are detachably connected with two adjacent nodes on the rectangular frame respectively, the supporting rod Connecting rod is installed on lug boss, the both ends of the connecting rod are respectively connected with the lead viscoelastic damper, and each lead is glutinous One end of elastic damper is detachably connected with other two adjacent node on the rectangular frame respectively.
4. energy dissipating-frame support structure as described in claim 1, which is characterized in that the supporting rod is wall pier formula supporting rod, The both ends of the supporting rod are detachably connected on respectively on each Vierendeel girder, and set on the supporting rod there are one open-type Mounting portion, the lead viscoelastic damper are detachably connected with the mounting portion.
5. energy dissipating-frame support structure as described in claim 1, which is characterized in that the damper assembly include viscoelasticity layer, Shearing steel plate, constraint steel plate and axis pin, the viscoelasticity layer pass through with the shearing steel plate and the constraint steel plate respectively Vulcanization is integral, and the viscoelasticity layer, shearing steel plate and constraint steel plate are linked together by the axis pin.
6. energy dissipating-frame support structure as claimed in claim 5, which is characterized in that the viscoelasticity layer includes multiple glutinous bullets Property rubber layer and multiple sheet metals, multiple viscoelasticity rubber layers are superimposed with multiple sheet metals to be fixedly connected.
7. such as claim 1 to 6 any one of them energy dissipating-frame support structure, which is characterized in that the lead viscoelasticity damping Device is lead viscoelastic damper or common viscoelastic damper.
8. energy dissipating-frame support structure as claimed in claim 7, which is characterized in that the lead viscoelastic damper further includes Lead for retractable pencil and lead for retractable pencil capping, the lead for retractable pencil are inserted in from the reserving hole of the viscoelasticity layer, the lead for retractable pencil capping and the constraint steel Plate is bolted.
CN201721376056.2U 2017-10-20 2017-10-20 A kind of energy dissipating-frame support structure Active CN207905124U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721376056.2U CN207905124U (en) 2017-10-20 2017-10-20 A kind of energy dissipating-frame support structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721376056.2U CN207905124U (en) 2017-10-20 2017-10-20 A kind of energy dissipating-frame support structure

Publications (1)

Publication Number Publication Date
CN207905124U true CN207905124U (en) 2018-09-25

Family

ID=63570464

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721376056.2U Active CN207905124U (en) 2017-10-20 2017-10-20 A kind of energy dissipating-frame support structure

Country Status (1)

Country Link
CN (1) CN207905124U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110155304A (en) * 2019-01-25 2019-08-23 北京机电工程研究所 Anti- side knock big opening cargo tank structure and the aircraft with it
CN111877587A (en) * 2020-08-08 2020-11-03 河南盛鼎建设集团有限公司 Small building safety device that moves away to avoid possible earthquakes
CN112482600A (en) * 2020-11-19 2021-03-12 东北林业大学 Composite damper for reinforcing building frame
CN113235753A (en) * 2021-04-03 2021-08-10 河北工业大学 Frame slant power consumption strutting arrangement
CN114250881A (en) * 2022-01-17 2022-03-29 南京林业大学 '5 + 4' orthogonal viscoelastic damping device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110155304A (en) * 2019-01-25 2019-08-23 北京机电工程研究所 Anti- side knock big opening cargo tank structure and the aircraft with it
CN110155304B (en) * 2019-01-25 2021-11-12 北京机电工程研究所 Anti-transverse-impact large-opening cabin section structure and aircraft with same
CN111877587A (en) * 2020-08-08 2020-11-03 河南盛鼎建设集团有限公司 Small building safety device that moves away to avoid possible earthquakes
CN111877587B (en) * 2020-08-08 2021-07-16 河南盛鼎建设集团有限公司 Small building safety device that moves away to avoid possible earthquakes
CN112482600A (en) * 2020-11-19 2021-03-12 东北林业大学 Composite damper for reinforcing building frame
CN113235753A (en) * 2021-04-03 2021-08-10 河北工业大学 Frame slant power consumption strutting arrangement
CN114250881A (en) * 2022-01-17 2022-03-29 南京林业大学 '5 + 4' orthogonal viscoelastic damping device

Similar Documents

Publication Publication Date Title
CN207905124U (en) A kind of energy dissipating-frame support structure
CN105926794B (en) The assembled mild steel damper optimized using stress isobar
KR101164413B1 (en) Stiffness increasing buckling-restrained braces for low-to-moderate earthquakes using friction material
CN102409757B (en) Anti-seismic structure of energy-consumption angle brace
CN211114138U (en) Beam column node safety device
CN207646943U (en) A kind of the rectangular-ambulatory-plane mild steel damper and shear wall structure of replaceable built-in spring
CN205653915U (en) Energy dissipation shock -proof type frame - bearing structure
CN103174230A (en) Novel energy eliminating and shake absorbing outrigger truss high-rise structure system
CN105696719A (en) Buckling restrained energy-consuming support structure restrained by adopting GFRP angle steel
CN205046755U (en) Harm controllable shake and decrease steel column that to repair
KR20090058906A (en) Iron frame brace having bucking protection part
CN207660125U (en) A kind of energy consumption armpit support
CN102926479A (en) Waveform mild steel energy dissipation support
CN207646930U (en) A kind of replaceable perpendicular wave mild steel damper
CN108301675A (en) A kind of aluminium alloy inner core assembled buckling restrained brace that side can be inspected
CN211597165U (en) Tension-compression damper with improved arc-shaped component and horizontal corrugated steel plate combined energy consumption
CN209854964U (en) Bearing-energy dissipation structure with double-order yield characteristic
CN107574944A (en) A kind of anti-buckling fan-shaped metal damper applied to assembled beam-column node region
CN101748820A (en) Energy-dissipating and shock-absorbing supporting device
CN107476631A (en) Curved scissors separates control type assembling-type metal damper
CN106835952B (en) A kind of combined anti-seismic system and combined anti-seismic bridge
CN105952018A (en) Multi-point yield energy dissipating type mild steel energy dissipater
Upadhyay et al. Comparison of the seismic retrofit of a three-column bridge bent with buckling restrained braces and self centering braces
CN102644336B (en) Metal damper with restraining devices
CN105735721B (en) A kind of high-strength large deformation C-shaped shell runback bit architecture

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant