alexa The Experimental Study on the Dynamic Characteristics
ISSN ONLINE(2319-8753)PRINT(2347-6710)

International Journal of Innovative Research in Science, Engineering and Technology
Open Access

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Research Article

The Experimental Study on the Dynamic Characteristics and Attenuation Law of the Composite Foundation

DING Jihui1 , WANG Weiyu2 , ZHAO Tuo2, FENG Junhi3 , QUAN Xiaojuan3
  1. College of Civil Engineering Hebei University, Baoding, Hebei, China
  2. Hebei Academy of Building Research, Shijiazhuang, Hebei,China
  3. China Metallurgical Design and Research Institute Co., Ltd. Baoding , Hebei, China
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Blasting are adopted to simulate the natural earthquake, through the field test of composite foundation and natural foundation, dynamic characteristics and attenuation law are studied. The experiment results show, the horizontal main vibration frequency of natural foundation is at 8.2 ~ 9.03 Hz and the vertical is at 7.75 ~ 9.16 Hz; the horizontal main vibration frequency of composite foundation is at 8.02 ~ 9.90 Hz and the vertical is at 8.36 ~ 9.70 Hz. Measuring point frequency of natural foundation and composite foundation is near to the first-order natural frequency. Effects of the implanting pile in the natural foundation are little on the frequency. Vibration attenuation of acceleration peak in the natural foundation and composite foundation is fitted in exponential attenuation, the attenuation rate in composite foundation is faster than natural foundation, and then composite foundation is good for the anti-seismic of the upper structure.


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