US20020129568A1 - Brace-type damper mounting structure - Google Patents

Brace-type damper mounting structure Download PDF

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Publication number
US20020129568A1
US20020129568A1 US10/098,771 US9877102A US2002129568A1 US 20020129568 A1 US20020129568 A1 US 20020129568A1 US 9877102 A US9877102 A US 9877102A US 2002129568 A1 US2002129568 A1 US 2002129568A1
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US
United States
Prior art keywords
brace
type damper
mounting structure
reinforcing plate
structure according
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.)
Abandoned
Application number
US10/098,771
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English (en)
Inventor
Koji Oka
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.)
OHMOTO-GUMI Co Ltd
Original Assignee
OHMOTO-GUMI Co Ltd
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Filing date
Publication date
Application filed by OHMOTO-GUMI Co Ltd filed Critical OHMOTO-GUMI Co Ltd
Assigned to HIRAISHI, HISAHIRO, OHMOTO-GUMI CO., LTD. reassignment HIRAISHI, HISAHIRO ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OKA, KOJI
Publication of US20020129568A1 publication Critical patent/US20020129568A1/en
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0237—Structural braces with damping devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0235—Anti-seismic devices with hydraulic or pneumatic damping
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
    • E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
    • E04H9/028—Earthquake withstanding shelters

Definitions

  • This invention relates to a brace-type damper mounting structure useful in a reinforced concrete structure such as a building structure and a civil-engineering structure in order to produce resisting and damping forces against external turbulent force such as earthquakes and wind.
  • brace-type dampers As a structure for placing brace-type dampers in a reinforced concrete structure such as a building structure and a civil-engineering structure, it is well known that steel frame members are built in column-to-beam joints of reinforced concrete construction, before each brace-type damper is mounted through a gusset plate anchored to each steel frame member by welding so as to transmit resisting or damping force produced from the dampers to a main frame of columns and beams.
  • the brace-type dampers are often placed in V-shaped or inverted V-shaped arrangement within a plane of structure. In this case, one end of each brace-type damper needs to be mounted to a beam center portion.
  • each gusset plate is mounted across the column and the beam.
  • considerations are made to design so that energy of external turbulent force such as earthquakes may be absorbed by the action of hinge (a plastic region) produced at the beam end (the joint of the beam to the column).
  • hinge a plastic region
  • using the gusset plates mounted as described the above is not rational to mount the brace-type dampers in a stable state.
  • the present invention is provided for solving the above problems in the prior art, and its object is to provide a brace-type damper mounting structure, which provides highly reliable stabilized joints to produce sufficient damping functions against external turbulent force such as earthquakes and wind and is so rational as to achieve higher workability.
  • the present invention relates to a structure for mounting a brace-type damper with a damper incorporated in a brace to the inside of each frame composed of columns and beams of a reinforced concrete structure, and this mounting structure comprises a reinforcing plate united to an outer surface part of each column making up the above frame, separately from each beam, wherein one end of the brace-type damper is connected to the reinforcing plate.
  • the damper applicable to the brace-type damper includes an oil damper, a friction damper and other various kinds of conventional dampers having been developed for seismic response control.
  • the present invention accepts the brace-type damper with the damper incorporated in the brace as equivalent to a damper functioning as the brace as a whole, without being limited to a damper mounted to an intermediate part of the brace.
  • the reinforcing plate is so united to the outer surface part of each column as to provide a structure having no effect on bar arrangement of the columns.
  • the reinforcing plate is provided separately from each beam for the purpose of eliminating shearing or axial force transmitted from the brace-type dampers from directly acting on the beam ends possible to be plasticized when the earthquake happened.
  • any reinforcing plate making no contribution toward substantially direct transmission of force will be enough, even if having a portion making contact with a beam portion depending on the need for surface finishing, for instance.
  • a method for connecting the reinforcing plate to the end of each brace-type damper may be generally by mounting the gusset plate to the reinforcing plate by welding, for instance, before the end of each brace-type damper is connected to the gusset plate with a bolt or a pin.
  • the reinforcing plate may be united to each column at its upper or lower end as described in claim 2.
  • each brace-type damper placed in generally V-shaped or inverted V-shaped arrangement, it is efficient to connect each brace-type damper to the reinforcing plate, which is mounted to the upper end of each column for V-shaped arrangement or to the lower end of each column for inverted V-shaped arrangement, in relation to the end connected to each column.
  • a brace-type damper mounting structure according to claim 3 is characterized in that the above reinforcing plate includes a band-shaped reinforcing plate placed around the outer surface part of each column.
  • a section closed in a ring shape is formed using the band-shaped reinforcing plate placed around the outer surface part of each column, so that the reinforcing plate itself provides high stiffness in the state of being united to each column.
  • a brace-type damper mounting structure according to claim 4 is characterized in that the above reinforcing plate includes a band-shaped reinforcing plate placed around an outer surface part within a column section as equivalent to the above outer surface part of each column.
  • a brace-type damper mounting structure according to claim 6 is characterized in that inner partition plates located within the column section are provided on the inside of the band-shaped reinforcing plate.
  • the present invention according to claims 1 to 4 and 6 may provide a rational and simple mounting structure, since the brace-type dampers are mounted to the inside of the frames of columns and beams by means of mounting each brace-type damper to the head or base of each column member, which is higher in proof stress and durability than the beams, to the exclusion of mounting to the beam end supposed to be damaged by external turbulent force such as earthquakes.
  • Each brace-type damper is mounted to the reinforcing plate placed around the outer surface part of each column, and therefore, has no bad influence upon the reinforcements placed in the column-to-beam joints nor hinders execution of works for concrete filling, resulting in achievement of higher workability.
  • the above mounting structure is for the brace incorporating the damper without increasing a burden on the column end, differently from the structure subjected to direct transmission of shearing or axial force like using a normally available brace with no damper, and therefore, is attributable to a rational mounting structure in a combination with brace-type damper functions.
  • the present invention relates to a structure for mounting a brace-type damper with a damper incorporated in a brace to the inside of each frame of columns and beams of a reinforced concrete structure, and this mounting structure comprises an anchoring member embedded in each beam making up the above frame, wherein one end of the brace-type damper is connected to a joint member, which so extends from the anchoring member as being projected from the upper or lower surface of each beam.
  • each brace-type damper may be received in a plane of structure in V-shaped or inverted V-shaped arrangement as the above general form of arrangement.
  • each brace-type damper Using the anchoring member embedded in a beam portion close to each column results in mounting one end of each brace-type damper to the beam portion close to each column.
  • it may be modified to mount the individual brace-type damper to the beam portion close to each column.
  • the shape steel making up the anchoring member has flanges placed in parallel to a joint surface of the brace-type damper with each beam.
  • the flanges of the shape steel will make resistance to the force, which shifts the anchoring member in the direction orthogonal to the axis of each beam.
  • the brace-type dampers may be mounted to each joint member such as the gusset plate, which so extends from the anchoring member as being projected from the upper or lower surface of each beam, with bolts or pins.
  • each joint member such as the gusset plate, which so extends from the anchoring member as being projected from the upper or lower surface of each beam, with bolts or pins.
  • the use of an anchoring member united to the joint member will be also enough.
  • the present invention makes a contribution toward not only reinforcement of portions affected by the force transmitted from the brace-type dampers but also smooth transmission of force between the anchoring member anchored in the concrete section and the concrete, since the brace-type dampers are mounted to the inside of the frames of columns and beams by means of mounting one end of each brace-type damper using the anchoring member provided in the section making up the section of each beam.
  • a brace-type damper mounting structure as described in claim 15 is characterized in that flanges for preventing the anchoring member from being shifted in the axial direction are mounted to the anchoring member.
  • the anchoring member having the flanges may produce the damper functions of the brace-type dampers more surely since the flanges apply compressive force to the concrete enough to mount the anchoring member in the beam section more surely.
  • FIG. 1 is a perspective view showing the outline of the overall brace-type damper mounting structure according to the present invention
  • FIG. 2 is a horizontal cross-sectional view showing one embodiment of the brace-type damper mounting structure according to the present invention
  • FIG. 3 is a vertical cross-sectional view showing one embodiment of the brace-type damper mounting structure according to the present invention.
  • FIG. 4 is a horizontal cross-sectional view showing one embodiment of the brace-type damper mounting structure according to the present invention.
  • FIG. 5 is a vertical cross-sectional view showing one embodiment of the brace-type damper mounting structure according to the present invention.
  • FIG. 6 is a horizontal cross-sectional view showing one embodiment of the brace-type damper mounting structure according to the present invention.
  • FIG. 7 is a vertical cross-sectional view showing one embodiment of the brace-type damper mounting structure according to the present invention.
  • FIG. 8 is a schematic view showing the overall brace-type damper mounting structure according to the present invention.
  • FIG. 9 is a perspective view showing one embodiment of the brace-type damper mounting structure according to the present invention.
  • FIG. 10 is a perspective view showing one embodiment of the brace-type damper mounting structure according to the present invention.
  • FIG. 1 shows the outline of the overall brace-type damper mounting structure according to the present invention, wherein two pieces of brace-type dampers 3 are placed in V-shaped arrangement within each frame composed of columns 1 and beams 2 of a reinforced concrete structure.
  • an upper end of each of two pieces of brace-type dampers 3 placed in V-shaped arrangement is connected to a band-shaped reinforcing plate 4 united to the outer surface of an upper column end just beneath each column-to-beam joint (a panel zone).
  • a gusset plate 5 is mounted to each reinforcing plate 4 by welding, and the end of each brace-type damper 3 is connected to the gusset plate 5 with a pin 6 . While the reinforcing plate 4 is united to the upper end of each column 1 in the above embodiment, it is to be understood that it may be also modified to unite the reinforcing plate to the lower end of each column 1 .
  • FIGS. 2 and 3 show one embodiment of the reinforcing plate 4 .
  • reference numeral 1 a denotes a main reinforcement of the column 1
  • 1 b is a hoop. Concrete in the column 1 is not shown in FIG. 2.
  • This embodiment has the similar features to that of FIG. 1 to the extent that each brace-type damper 3 is connected to the gusset plate 5 , which is mounted to the band-shaped reinforcing plate 4 around the outer surface of the upper end of each column 1 , with the pin 6 .
  • inner partition plates 7 are further provided on the inside of the reinforcing plate 4 placed around the outer surface part of each column 1 into a quadrangular prismatic shape, and studs 8 serving as shear connectors are mounted to the inner partition plate 7 and the inner surface of the reinforcing plate 4 by welding to provide more enhanced unitedness with the concrete for the columns 1 enough to prevent the reinforcing plate 4 from being deformed.
  • a half pre-cast beam member 2 a is used for each beam 2 in the above embodiment, so that each beam 2 is formed by means of uniting the half pre-cast beam member with cast-in-place concrete (not shown).
  • the reinforcing plate 4 is out of contact with the bottom surface of the half pre-cast beam member 2 a making up each beam 2 , thus providing a structure which eliminates shearing or axial force transmitted from the brace-type dampers 3 from directly acting on the beams 2 .
  • the hoop 1 b of each column 1 may be used as it is, or otherwise, the use of no hoop will be also enough.
  • the use of no hoop 1 b makes it easy to place the reinforcing plate 4 inclusive of the inner partition plates 7 .
  • FIGS. 4 and 5 show modifications of the inner partition plates 7 provided on the inside of the reinforcing plate 4 . Having described the embodiment in FIG. 2 in relation to the inner partition plates 7 placed in parallel to one-directional side plates making up the band-shaped reinforcing plate 4 , the inner partition plates 7 in the modification shown in FIG. 4 are placed in cross-shaped arrangement.
  • the central inner partition plate 7 continuously extending to the gusset plate 5 mounted to the central position of the reinforcing plate 4 (in the quadrangular prismatic width direction) is placed in parallel to other inner partition plates 7 on both sides of the central inner partition plate 7 .
  • FIGS. 6 and 7 show a different embodiment of the reinforcing plate 4 .
  • the reinforcing plate 4 in this embodiment is formed in the shape of a band so as to be placed around the outer surface part in the column section as equivalent to the outer surface part of each column 1 into one body.
  • the reinforcing plate placed as described the above is applied on the assumption that there is no desire to expose the reinforcing plate 4 to the outer surface, from the viewpoint of designs, for instance.
  • each brace-type damper 3 is connected to the joint member (the gusset plate 10 ), which is projecting from the upper surface of the short H-section-made anchoring member 9 embedded in the center of each beam 2 , with the pin 6 .
  • the gusset plate 10 as the joint member in the above embodiment is projecting from the upper surface of the anchoring member 9 , it is to be understood that the gusset plate 10 , when applied to the case of placing two pieces of brace-type dampers 3 in inverted V-shaped arrangement, is modified to project from the lower surface of the anchoring member 9 , as a matter of course.
  • each brace-type damper When two-pieces of brace-type dampers 3 are placed in inverted V-shaped arrangement, the lower end of each brace-type damper also needs to be connected to the reinforcing plate 4 united to the outer surface of a lower column end just above each column-to-beam joint as a matter of course.
  • FIG. 1 having described the embodiment in FIG. 1 in relation to the anchoring member 9 embedded in the center portion of each beam 2 , it is to be understood that it may be modified to embed the anchoring member in a beam portion close to each column 1 for pin-connection of the individual brace-type damper 3 to the anchoring member 9 (the gusset plate 10 ), as shown in FIG. 8.
  • FIG. 9 shows one embodiment of the anchoring member 9 more specifically.
  • reference numeral 2 a denotes an upper end reinforcement of the beam 2 , and concrete in the beam 2 is not shown.
  • This embodiment has the similar features to that of FIG. 1 to the extent that the short H-section is used for the anchoring member 9 , and the lower end of each brace-type damper 3 is connected to the gusset plate 10 , which is united to the upper surface of an upper flange of the H-section, with the pin 6 .
  • Studs 11 serving as shear connectors are mounted to the H-section web of the anchoring member 9 by welding to provide more enhanced bond of the beams 2 to the concrete.
  • the H-section flanges of the anchoring member 9 are placed in parallel to a joint surface of the brace-type dampers 3 with each beam 2 to make a contribution toward resistance to the force, which shifts the anchoring member in a direction orthogonal to the axis of each beam 2 .
  • disk-shaped flanges 12 are respectively mounted to the opposite ends of the anchoring member 9 by welding. These flanges 12 make resistance with their faces to the force, which shifts the anchoring member 9 in the axial direction in the concrete for the beams 2 , by means of applying the compressive force to the concrete in any axial direction, resulting in more enhancement of stability of the anchoring member 9 .
  • anchoring member 9 include an anchoring member having no stud 11 and an anchoring member having an axial force resisting flange 12 at an intermediate portion other than the opposite ends of the anchoring member 9 , in place of the studs 11 , and so on.
  • reference numeral 10 a denotes a reinforcing rib mounted to the gusset plate 10 in parallel to the flanges of the anchoring member 9 .
  • the anchoring member 9 in this modification is applied as a member for reinforcing the gusset plate 10 , inclusively of its projecting portion from each beam 2 , by providing an intermediate flange 12 other than the opposite flanges, in place of the studs 11 , while extending the opposite and intermediate flanges 12 upward so as to reach up to the projecting portion.
  • the opposite flanges 12 of the anchoring member 9 reach up to the projecting portion of the gusset plate 10 from each beam 2 so as to be one with the opposite end faces of the gusset plate 10 and those of the reinforcing rib 10 a.
  • the intermediate flange 12 of the anchoring member 9 also reaches up to the projecting portion of the gusset plate 10 from each beam 2 so as to be one with an intermediate portion of the gusset plate 10 and that of the reinforcing rib 10 a.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
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JP2001-73268 2001-03-15
JP2001073268 2001-03-15
JP2002066423A JP3618722B2 (ja) 2001-03-15 2002-03-12 ブレース型ダンパを取付けた鉄筋コンクリート構造物
JP2002-66423 2002-03-12

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US20070000078A1 (en) * 2005-07-01 2007-01-04 Sang-Hyo Kim Girder bridge protection device usin sacrifice means
US20070114799A1 (en) * 2005-11-18 2007-05-24 Andre Riesberg Systems and methods for damping a displacement of a wind turbine tower
US20130118098A1 (en) * 2011-11-11 2013-05-16 Michael C. Constantinou Negative stiffness device and method
ITPD20120222A1 (it) * 2012-07-12 2014-01-13 Fip Ind Struttura prefabbricata e procedimento di montaggio
US9080339B2 (en) * 2013-03-14 2015-07-14 Timothy A. Hayes Structural connection mechanisms for providing discontinuous elastic behavior in structural framing systems
US9206616B2 (en) 2013-06-28 2015-12-08 The Research Foundation For The State University Of New York Negative stiffness device and method
US9567763B2 (en) * 2014-12-26 2017-02-14 Kenji Miyazawa Vibration damping wall structure and a method of connecting vibration damping devices
US9644384B2 (en) * 2015-02-12 2017-05-09 Star Seismic, Llc Buckling restrained brace and related methods
CN106639464A (zh) * 2016-11-15 2017-05-10 东南大学 一种端部具有斜向螺旋型诱导单元的屈曲诱导支撑
US20170145686A1 (en) * 2015-11-23 2017-05-25 Korea Electric Power Corporation Seismic reinforcing device
CN106760860A (zh) * 2017-03-14 2017-05-31 中国地震局工程力学研究所 一种折板型剪切阻尼器
US9689173B2 (en) * 2015-09-01 2017-06-27 Hory Corporation Structure attached with vibration control device
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US9745741B2 (en) 2013-03-14 2017-08-29 Timothy A. Hayes Structural connection mechanisms for providing discontinuous elastic behavior in structural framing systems
US9938714B2 (en) * 2016-03-24 2018-04-10 Omg, Inc. Hinged building shrinkage compensation device
CN108049517A (zh) * 2018-01-11 2018-05-18 重庆大学 一种外置可更换耗能组件自复位rc框架柱脚节点
CN108360903A (zh) * 2018-04-28 2018-08-03 郑州大学 一种建筑工程用阻尼器支撑装置及其建造方法
US20180347221A1 (en) * 2015-05-26 2018-12-06 Mahesh YASHRAJ A method of constructing earthquake resistant structure with reinforced foundation and wall structure
US10745913B2 (en) 2016-03-24 2020-08-18 Omg, Inc. Building shrinkage compensation device with rotating gears
US10934734B1 (en) 2020-02-21 2021-03-02 King Saud University Damped reinforced joint for beam-column connection
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US11447949B2 (en) * 2020-02-16 2022-09-20 Behsazan Sazeh Sarzamin Friction damper for a building structure
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CN115387465A (zh) * 2022-09-06 2022-11-25 江苏科技大学 一种冷弯薄壁型钢-木组合耗能节点及其安装方法

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