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wind-induced responses of super-large cooling towers

Journal of Central South University 2013年第11期20卷 3216-3228页

作者：柯世堂葛耀君赵林陈少林 Y.Tamura Department of Civil Engineering Nanjing University of Aeronautics and Astronautics State Key Laboratory for Disaster Reduction in Civil Engineering (Tongji University) wind Engineering Research Center Tokyo Polytechnic University

Traditional gust load factor(GLF)method,inertial wind load(IWL)method and tri-component method(LRC+IWL)cannot accurately analyze the wind-induced responses of super-large cooling towers,so the real combination formulas of fluctuating wind-induced responses and equivalent static wind loads(ESWLSs)were derived based on structural dynamics and random vibration *** consistent coupled method(CCM)was presented to compensate the coupled term between background and resonant *** the super-large cooling tower(H=215 m)of nuclear power plant in Jiangxi Province,China,which is the highest and largest in China,as the example,based on modified equivalent beam-net design method,the aero-elastic model for simultaneous pressure and vibration measurement of super-large cooling tower is firstly carried ***,combining wind tunnel test and CCM,the effects of self-excited force on the surface pressures and wind-induced responses are discussed,and the wind-induced response characteristics of background component,resonant component,coupled term between background and resonant response,fluctuating responses,and wind vibration coefficients are *** can be concluded that wind-induced response mechanism must be understood to direct the wind resistant design for super-large cooling towers.

关键词： super-large cooling towers wind-induced responses wind vibration coefficients aero-elastic model consistent coupled method

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Research and Implementations of Structural Monitoring for Bridges and Buildings in Japan

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Engineering 2019年第6期5卷 1093-1119页

作者： Yozo Fujino Dionysius MSiringoringo Yoshiki Ikeda Tomonori Nagayama Tsukasa Mizutani Institute of Advanced Sciences Yokohama National UniversityYokohama 240-8501Japan Disaster Prevention Research Institute Kyoto UniversityKyoto 611-0011Japan Department of Civil Engineering The University of TokyoTokyo 113-8656Japan

This paper provides a review on the development of structural monitoring in Japan, with an emphasis on the type, strategy, and utilization of monitoring systems. The review focuses on bridge and building structures using vibration-based techniques. Structural monitoring systems in Japan historically started with the objective of evaluating structural responses against extreme events. In the development of structural monitoring, monitoring systems and collected data were used to verify design assumptions, update speci cations, and facilitate the ef cacy of vibration control systems. Strategies and case studies on monitoring for the design veri cation of long-span bridges and tall buildings, the performance of seismic isolation systems in building and bridges, the veri cation of structural retro t, the veri cation of structural control systems (passive, semi-active, and active), structural assessment, and damage detec- tion are described. More recently, the application of monitoring systems has been extended to facilitate ef cient operation and effective maintenance through the rationalization of risk and asset management using monitoring data. This paper also summarizes the lessons learned and feedback obtained from case studies on the structural monitoring of bridges and buildings in Japan.

关键词： Structural monitoring Long-span bridge High-rise building Seismic monitoring wind-induced responses Pavement and slab monitoring Structural control monitoring Structural assessment

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