EXPERIMENTAL RESEARCH ON BASE ISOLATION MODEL OF OVER-TRACK HIGH-RISE BUILDINGS USING A NEW TYPE OF BEARING

TANG Kangsheng; WU Yan; SHENG Tao; CHEN Xiaoming

doi:10.13204/j.gyjzG20052403

Volume 51 Issue 5

Sep. 2021

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Zai Jinmin, Zhou Feng, Mei Guoxiong, Wang Xudong, Pei Jie, Liao Heshan. END-BEARING COMPOSITE PILE FOUNDATION AND ITS DESIGN METHOD[J]. INDUSTRIAL CONSTRUCTION, 2008, 38(1): 60-64,73. doi: 10.13204/j.gyjz200801015

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TANG Kangsheng, WU Yan, SHENG Tao, CHEN Xiaoming. EXPERIMENTAL RESEARCH ON BASE ISOLATION MODEL OF OVER-TRACK HIGH-RISE BUILDINGS USING A NEW TYPE OF BEARING[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(5): 76-81,163. doi: 10.13204/j.gyjzG20052403

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EXPERIMENTAL RESEARCH ON BASE ISOLATION MODEL OF OVER-TRACK HIGH-RISE BUILDINGS USING A NEW TYPE OF BEARING

doi: 10.13204/j.gyjzG20052403

1. College of Civil and Environment Engineering, Ningbo University, Ningbo 315211, China;
2. Ningbo Rail Transit Property Co. Ltd., Ningbo 315101, China

Received Date: 2020-05-24
Available Online: 2021-09-16
Publish Date: 2021-09-16

Abstract

Abstract

A new type of bearing with vertical stiffness that can be adjusted precisely was designed. A 1/10 scale model was established on the basis of a high-rise building above a subway, and the vibration excitation of subway and road traffic environment was input, and the actual effect of vertical vibration isolation based on the new type of bearing was analyzed. The test results showed:1) the mix proportion of sand particles and rubber particles was adjusted, and the vertical stiffness of the new bearing could be precisely adjusted with a maximum error of no more than 3%; 2)the trend of irregular fluctuations of indoor vibration of high-rise buildings under the excitation of the subway upward along the floor was presented; 3)after applying the basic vertical vibration isolation measures, the vertical vibration level difference of each floor became smaller, and the trend of irregular fluctuations became gentle; 4)after the implementation of the basic vertical vibration isolation measures, the indoor comfort of the high-rise building had been significantly improved, and the floor 1/3 octave frequency division vibration level was reduced by a maximum of about 15 dB, and all floors had met the standard comfort requirements;5) the new bearing was affected by the friction energy dissipation among sand grains, which led to the base isolation structure had a stronger anti-interference resistance to low-frequency environmental vibration caused by road traffic and could suppress resonance phenomena.
- a new type of bearing,
- subway,
- vertical vibration isolation,
- high-rise buildings,
- comfort

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References

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