2011 Damping issue—smart buildings: viscous dampers, Part I and II
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Copyright © 2011 John Wiley & Sons, Ltd. THE STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS Struct. Design Tall Spec. Build. 20, 433–434 (2011) Published online 17 May 2011 in Wiley Online Library (wileyonlinelibrary.com/journal/tal). DOI: 10.1002/tal.706 2011 Damping issue—smart buildings: viscous dampers, Part I and II EDITORIAL It is a pleasure to present the second annual damping issue, Part I and II. The vision when this journal was founded was to bridge the gap between research and design, and also to speed up the review process so that technology can be implemented as fast as possible. Many great papers have been received and pub- lished from around the world. Each year, in at least one issue of the journal, readers can look forward to a collection of excellent papers that are receiving special recognition for their ingenuity in the use of dampers. This year, because of the number of excellent papers, there will be two issues with the accepted papers on damping in buildings. Copyright © 2011 John Wiley & Sons, Ltd. In structural engineering, when approached from a scientific perspective, most things can be followed and make sense. The addition of dampers into buildings makes technical and fiscal sense. The expan- sion in the number of accepted papers is evidence of this expansion. Dampers placed in buildings ‘eat up’ the energy input to the building from the earthquake or wind loading. They reduce building inter- storey drift and associated damage. They also reduce floor acceleration, which can reduce the buildings occupants’ mental distress and damage to treasured contents. The reality in earthquake, wind and structural engineering is that committed and brilliant engineers around the world are making, at ever increasing speeds, progress in our ability to more accurately model loads on buildings and structural members. Therefore, dampers also have the added benefit that they can be updated when technology creates better and active dampers. The 2010 damping issue papers were: Taylor D, Smart buildings and viscous dampers—a design engineer’s perspective, 19(3); Hart GC, Jain A, Ekwueme CG, Smart buildings: viscous dampers, 19(3); Chen X-W, Li J-X, Cheang J, Seismic performance analysis of Wenchuan Hospital structure with viscous dampers, 19(3); Miyamoto HK, Gilani ASJ, Wada A, Ariyaratana C, Collapse risk of tall steel moment frame buildings with viscous dampers subjected to large earthquakes, 19(3); Xuewei C, Xiaolei H, Research summary on long-span connected tall building structure with viscous dampers, 19(3); Hart GC, Ekwueme CG, Brandow G, Barnes MG, Ozegbe K, High performance/smart and living buildings: the benefits of using Taylor dampers on the PEER and LATBSDC Concrete 42-storey high-rise building (Part I), 19(3). Part I and II contain the following papers: X Lu and J Chen [1] present a tuned mass damper to be set in the upper part of the Shanghai Center Tower to control the structural wind-induced response. X Lu and J Chen [2] describe the optimum control parameters of a tuned mass damper (TMD) that were obtained through different optimization cases of TMD system parameters for wind vibration control. JO Malley, M Sinclair, T Graf, C Blaney, C-M Uang and T Ahmed [3] summarize the seismic analysis and rehabilitation of a 15-storey steel moment resisting frame building that included a combination of moment connection strengthening and additions of viscous dampers. KK Wong [4] focuses on fluid viscous dampers being used in both newly constructed and seismically retrofitted structures to effectively reduce dynamic responses. VB Patil and RS Jangid [5] demonstrate how the performance of dampers is studied by connecting them to alternate stories with two innovative arrangements and then comparing it with the conventional arrangement. J Kim, H Choi and KW Min [6] present the combined system of rotational friction dampers connected to high-strength tendons to enhance both seismic and progressive collapse-resisting capacity of existing structures.
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Transcript of 2011 Damping issue—smart buildings: viscous dampers, Part I and II
Copyright © 2011 John Wiley & Sons, Ltd.
THE STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGSStruct. Design Tall Spec. Build. 20, 433–434 (2011)Published online 17 May 2011 in Wiley Online Library (wileyonlinelibrary.com/journal/tal). DOI: 10.1002/tal.706
2011 Damping issue—smart buildings: viscous dampers, Part I and II
EDITORIAL
It is a pleasure to present the second annual damping issue, Part I and II. The vision when this journal was founded was to bridge the gap between research and design, and also to speed up the review process so that technology can be implemented as fast as possible. Many great papers have been received and pub-lished from around the world. Each year, in at least one issue of the journal, readers can look forward to a collection of excellent papers that are receiving special recognition for their ingenuity in the use of dampers. This year, because of the number of excellent papers, there will be two issues with the accepted papers on damping in buildings. Copyright © 2011 John Wiley & Sons, Ltd.
In structural engineering, when approached from a scientifi c perspective, most things can be followed and make sense. The addition of dampers into buildings makes technical and fi scal sense. The expan-sion in the number of accepted papers is evidence of this expansion. Dampers placed in buildings ‘eat up’ the energy input to the building from the earthquake or wind loading. They reduce building inter-storey drift and associated damage. They also reduce fl oor acceleration, which can reduce the buildings occupants’ mental distress and damage to treasured contents.
The reality in earthquake, wind and structural engineering is that committed and brilliant engineers around the world are making, at ever increasing speeds, progress in our ability to more accurately model loads on buildings and structural members. Therefore, dampers also have the added benefi t that they can be updated when technology creates better and active dampers.
The 2010 damping issue papers were: Taylor D, Smart buildings and viscous dampers—a design engineer’s perspective, 19(3); Hart GC, Jain A, Ekwueme CG, Smart buildings: viscous dampers, 19(3); Chen X-W, Li J-X, Cheang J, Seismic performance analysis of Wenchuan Hospital structure with viscous dampers, 19(3); Miyamoto HK, Gilani ASJ, Wada A, Ariyaratana C, Collapse risk of tall steel moment frame buildings with viscous dampers subjected to large earthquakes, 19(3); Xuewei C, Xiaolei H, Research summary on long-span connected tall building structure with viscous dampers, 19(3); Hart GC, Ekwueme CG, Brandow G, Barnes MG, Ozegbe K, High performance/smart and living buildings: the benefi ts of using Taylor dampers on the PEER and LATBSDC Concrete 42-storey high-rise building (Part I), 19(3).
Part I and II contain the following papers:
X Lu and J Chen [1] present a tuned mass damper to be set in the upper part of the Shanghai Center Tower to control the structural wind-induced response.X Lu and J Chen [2] describe the optimum control parameters of a tuned mass damper (TMD) that were obtained through different optimization cases of TMD system parameters for wind vibration control.JO Malley, M Sinclair, T Graf, C Blaney, C-M Uang and T Ahmed [3] summarize the seismic analysis and rehabilitation of a 15-storey steel moment resisting frame building that included a combination of moment connection strengthening and additions of viscous dampers.KK Wong [4] focuses on fl uid viscous dampers being used in both newly constructed and seismically retrofi tted structures to effectively reduce dynamic responses.VB Patil and RS Jangid [5] demonstrate how the performance of dampers is studied by connecting them to alternate stories with two innovative arrangements and then comparing it with the conventional arrangement.J Kim, H Choi and KW Min [6] present the combined system of rotational friction dampers connected to high-strength tendons to enhance both seismic and progressive collapse-resisting capacity of existing structures.
434 EDITORIAL
Copyright © 2011 John Wiley & Sons, Ltd. Struct. Design Tall Spec. Build. 20, 433–434 (2011) DOI: 10.1002/tal
AM Aly, A Zasso and F Resta [7] present wind-induced response reduction in a very slender building using magneto-rheological dampers with level mechanism.J Kang, H-S Kim and D-G Lee [8] explain the effectiveness of semiactive TMDs for the response control of a wind-excited tall building.Y Ribakov and G Agranovich [9] focus on viscoelastic dampers being widely used for enhancing structural response to earthquakes, wind and other dynamic loadings.Y Ribakov [10] investigates a damping system including viscous and variable friction dampers for improving structural system responses.Y Ribakov and G Agranovich [11] describe active dampers being known for many years as an excellent solution yielding enhanced structural seismic behavior.H Estekanchi and M Basim [12] present the endurance time method being utilized to acquire optimal placement of viscous dampers in short steel frames.
Douglas TaylorGary C. Hart
REFERENCES
1 Lu X, Chen J. 2011. Mitigation of wind-induced response of Shanghai Center Tower by tuned mass damper. The Structural Design of Tall and Special Buildings 20(4): 435–452.
2 Lu X, Chen J. 2011. Parameter optimization and structural design of tuned mass damper for Shanghai Center Tower. The Structural Design of Tall and Special Buildings 20(4): 453–471.
3 Malley JO, Sinclair M, Graf T, Blaney C, Ahmed T. 2011. Seismic upgrade of a 15-story steel moment frame building—satisfying performance criteria with application of experimental and analytical procedures. The Structural Design of Tall and Special Buildings 20(4): 472–481.
4 Wong KKF. 2011. Seismic energy analysis of structures with nonlinear fl uid viscous dampers—algorithm and numerical verifi cation. The Structural Design of Tall and Special Buildings 20(4): 482–496.
5 Patil VB, Jangid RS. 2011. Response of wind-excited benchmark building installed with dampers. The Structural Design of Tall and Special Buildings 20(4): 497–514.
6 Kim J, Choi H, Min KW. 2011. Use of rotational friction dampers to enhance seismic and progressive collapse resisting capacity of structures. The Structural Design of Tall and Special Buildings 20(4): 515–537.
7 Aly AM, Zasso A, Resta F. 2011. On the dynamics of a very slender building under winds: response reduction using MR dampers with lever mechanism. The Structural Design of Tall and Special Buildings 20(5): 539–551.
8 Kang J, Kim HS, Lee DG. 2011. Mitigation of wind response of a tall building using semi-active tuned mass dampers. The Structural Design of Tall and Special Buildings 20(5): 552–565.
9 Ribakov Y, Agranovich G. 2011. A Method for design of seismic resistant structues with viscoelastic dampers. The Struc-tural Design of Tall and Special Buildings 20(5): 566–578.
10 Ribakov Y. 2011. Using viscous and variable friction dampers for improving structural seismic response. The Structural Design of Tall and Special Buildings 20(5): 579–593.
11 Ribakov Y, Agranovich G. 2011. Control of structural seismic response by a limited set of active dampers. The Structural Design of Tall and Special Buildings 20(5): 594–611.
12 Estekanchi HE, Basim MC. 2011. Optimal damper placement in steel frames by the endurance time method. The Structural Design of Tall and Special Buildings 20(5): 612–630.
