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Sun G.-L.,Beijing General Municipal Engineering Design and Research Institute | Chen Y.-Q.,Beijing QITAI Shock Control and Scientific Development Co. | Zhang K.,Beijing General Municipal Engineering Design and Research Institute | Zhang L.-P.,Beijing General Municipal Engineering Design and Research Institute | Ma L.-Z.,Beijing QITAI Shock Control and Scientific Development Co.
Gongcheng Lixue/Engineering Mechanics | Year: 2014

Through the summary of seismic strengthening design of Fuchengmen bridges, the design method of Fluid viscous damper (FVD) when seismic strengthening were shown in this paper. By comparing with the conventinal strengthing method, the advantages of using FVD in engineering cost, traffic affects and implementation are discussed herein. The research results show that: for three or four span simply-supported bridges, or continuous girder bridge, the reinforcement scheme of adding viscous dampers, not only is effective, but also has low cost, strong implementation and small traffic impacts, which is suitable for widely application. But when doing seismic strengthing design, displacement goal should be defined clearly and the increase of seismic demanding in the connection members after strengthening should be paid more attention to.


Chen Y.,Beijing QITAI Shock Control and Scientific Development Co. | Cao T.,Beijing QITAI Shock Control and Scientific Development Co. | Ma L.,Beijing QITAI Shock Control and Scientific Development Co. | Luo C.,John A. Martin and Associates Inc.
Earthquake Engineering and Engineering Vibration | Year: 2010

Performance analysis of the Pangu Plaza under earthquake and wind loads is described in this paper. The plaza is a 39-story steel high-rise building, 191 m high, located in Beijing close to the 2008 Olympic main stadium. It has both fluid viscous dampers (FVDs) and buckling restrained braces or unbonded brace (BRB or UBB) installed. A repeated iteration procedure in its design and analysis was adopted for optimization. Results from the seismic response analysis in the horizontal and vertical directions show that the FVDs are highly effective in reducing the response of both the main structure and the secondary system. A comparative analysis of structural seismic performance and economic impact was conducted using traditional methods, i. e., increased size of steel columns and beams and/or use of an increased number of seismic braces versus using FVD. Both the structural response and economic analysis show that using FVD to absorb seismic energy not only satisfies the Chinese seismic design code for a rare earthquake, but is also the most economical way to improve seismic performance both for one-time direct investment and long term maintenance. © Institute of Engineering Mechanics, China Earthquake Administration and Springer Berlin Heidelberg 2009.

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