强震作用下嵌岩单桩时程响应振动台试验

doi:10.16285/j.rsm.2021.0548

Rock and Soil Mechanics ›› 2021, Vol. 42 ›› Issue (12): 3227-3237.doi: 10.16285/j.rsm.2021.0548

• Fundamental Theroy and Experimental Research • Previous Articles Next Articles

Shaking table test of time-history response of rock-socketed single pile under strong earthquake

FENG Zhong-ju^{1, 2}, ZHANG Cong^{1, 2}, HE Jing-bin³, DONG Yun-xiu⁴, YUAN Feng-bin⁵

1. Key Laboratory for Special Area High Way Engineering of the Ministry of Education, Chang’an University, Xi’an, Shaanxi 710064, China; 2. School of Highway, Chang’an University, Xi’an, Shaanxi 710064, China; 3. Engineering Experiment Monitoring Institute, Power China Northwest Engineering Corporation Limited, Xi’an, Shaanxi 710064, China; 4. School of Civil Engineering, Longdong University, Qingyang, Gansu 745000, China; 5. China Highway Engineering Consultants Corporation, Beijing 100089, China

Received:2021-04-14 Revised:2021-06-24 Online:2021-12-13 Published:2021-12-14
Supported by:
This work was supported by the National Natural Science Foundation of China(51708040), the Fundamental Research Funds for the Central Universities, CHD (300102218115) and the Hainan Provincial Transportation Science and Technology Project (HNZXY2015-045R).

Abstract

Abstract: To explore the time-history response laws of pile foundation under different types of seismic waves, the pile acceleration of rock-socketed single pile foundation, relative displacement of pile top, bending moment of pile body and damage of pile foundation under the action of artificially synthesized 5010 waves, 5002 waves, Kobe waves and El-Centro waves with an intensity of 0.35g were studied through the shaking table test. The test results show that the dynamic response characteristics of rock-socketed single pile foundation are related to the spectrum characteristics of input seismic waves. The acceleration response of the pile top significantly lags behind that of the pile bottom, and the peak acceleration of the pile reaches the maximum value under the action of El-Centro waves. The relative displacement of the pile top is the largest when inputting Kobe waves, and the peak value appears earliest when inputting El-Centro waves. The maximum bending moment of the pile does not exceed the bending bearing capacity of the pile foundation, and there is no damage to the pile foundation. In the anti-seismic design of pile foundation, the type of seismic waves can be reasonably selected according to the corresponding checking content, and the corresponding engineering suggestions are proposed.

Key words: piles foundation, strong earthquake, shaking table test, time-history response

CLC Number:

TU473

FENG Zhong-ju, ZHANG Cong, HE Jing-bin, DONG Yun-xiu, YUAN Feng-bin, . Shaking table test of time-history response of rock-socketed single pile under strong earthquake[J].Rock and Soil Mechanics, 2021, 42(12): 3227-3237.

References

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