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Shaking Table Test Study on Dynamic Characteristics of Bridge Foundation Reinforcement on Slopes
Lei Da,Qi Zhihui,Jiang Guanlu,Wang Zhimeng,Li Anhong
Author NameAffiliationE-mail
Lei Da School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Chengdu 610031, China  
Qi Zhihui School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Chengdu 610031, China  
Jiang Guanlu School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Chengdu 610031, China wgljiang@swjtu.edu.cn 
Wang Zhimeng China Railway Eryuan Engineering Group Co. Ltd., Chengdu 610031, China  
Li Anhong China Railway Eryuan Engineering Group Co. Ltd., Chengdu 610031, China  
摘要:
With the fast development of bridge construction in mountainous and seismic areas, it is necessary to conduct related research. Based on the design of a shaking table model test, here are the following test results:the filtering effect exists in soil and is affected by the dynamic constraint conditions, the amplitude is strengthened around the natural frequency and weakened in other frequency bands in the Fourier spectrum. Since the acceleration scaling effect occurred on a sloped surface, the acceleration response decreases from the outside to the inside in soil. The dynamic response is relatively strong near the slip surface in bedrock due to the reflection of seismic waves. The failure mode of landslide is decided by the slope angle and slipping mass distribution, and the test shows the front row stabilizing piles should keep a proper distance from bridge foundation so that seismic resistance can be guaranteed for the bridge foundation.
关键词:  Shaking table test  Stabilizing pile  Filtering effect  Dynamic response Failure mode
DOI:
分类号:
基金项目:supported by the China Railway Ministry of Railway's Research and Development Project (Grant No.Z2012-061).
Shaking Table Test Study on Dynamic Characteristics of Bridge Foundation Reinforcement on Slopes
Lei Da,Qi Zhihui,Jiang Guanlu,Wang Zhimeng,Li Anhong
Abstract:
With the fast development of bridge construction in mountainous and seismic areas, it is necessary to conduct related research. Based on the design of a shaking table model test, here are the following test results:the filtering effect exists in soil and is affected by the dynamic constraint conditions, the amplitude is strengthened around the natural frequency and weakened in other frequency bands in the Fourier spectrum. Since the acceleration scaling effect occurred on a sloped surface, the acceleration response decreases from the outside to the inside in soil. The dynamic response is relatively strong near the slip surface in bedrock due to the reflection of seismic waves. The failure mode of landslide is decided by the slope angle and slipping mass distribution, and the test shows the front row stabilizing piles should keep a proper distance from bridge foundation so that seismic resistance can be guaranteed for the bridge foundation.
Key words:  Shaking table test  Stabilizing pile  Filtering effect  Dynamic response Failure mode