Fundamental natural vibration periods testing and regression analysis for typical high-rise buildings in Shanghai
YAN Peilei, SUN Baitao
1. Institute of Engineering Mechanics, China Earthquake Administration; Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration, Harbin 150080, Heilongjiang, China
Abstract：The fundamental natural vibration period of a high-rise building is its very important dynamic characteristic.Through field testing a high-rise building with a specific structure, a certain law is summarized to deduce empirical formulas for its natural vibration periods, and rapidly estimate its dynamic characteristics and seismic action and wind load which it can bear.Here, based on dynamic performance field testing data of 9 typical high-rise buildings in Shanghai, their fundamental natural vibration periods were identified, and regression statistical analysis was done.According to the empirical formula for the fundamental natural vibration period of high-rise frame-shear wall structures fitted using actual measured data of structures with a height of lee than 50m in the current code, empirical formulas for fundamental natural vibration periods of structures with a height of 30-130 m in longitudinal direction and lateral one, respectively of cross-section were deduced based on the aspect ratio of structures.Empirical formulas for fundamental natural vibration periods of high-rise frame-core tube structures with a height of 90-190 m in longitudinal direction and lateral one, respectively of cross-section were deduced for the first time.The proposed formulas here provided a reference for designers working in initial design stage of high-rise buildings.These formulas were supplement and perfection of the current code for loads of building structures (GB50009—2012).
闫培雷，孙柏涛. 上海市典型高层建筑结构基本自振周期测试与回归分析[J]. 振动与冲击, 2019, 38(15): 103-108.
YAN Peilei, SUN Baitao. Fundamental natural vibration periods testing and regression analysis for typical high-rise buildings in Shanghai. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(15): 103-108.
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