• You are welcome to ERC!
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 22次   下载 28 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Shaking Table Tests on Bridge Foundation Reinforced by Anti-slide Piles on Slope
ZHOU Heng1,2, SU Qian1,2, LIU Jie1, YUE Fei1
1.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;2.Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Chengdu 610031, China
摘要:
Based on the requirement of seismic reinforcement of bridge foundation on slope in the Chengdu-Lanzhou railway project, a shaking table model test of anti-slide pile protecting bridge foundation in landslide section is designed and completed. By applying Wenchuan seismic waves with different acceleration peaks, the stress and deformation characteristics of bridge pile foundation and anti-slide pile are analyzed, and the failure mode is discussed. Results show that the dynamic response of bridge pile and anti-slide pile are affected by the peak value of seismic acceleration of earthquake, with which the stress and deformation of the structure increase. The maximum dynamic earth pressure and the moment of anti-slide piles are located near the sliding surface, while that of bridge piles are located at the top of the pile. Based on the dynamic response of structure, local reinforcement needs to be carried out to meet the requirement of the seismic design. The PGA amplification factor of the surface is greater than the inside, and it decreases with the increase of the input seismic acceleration peak. When the slope failure occurs, the tension cracks are mainly produced in the shallow sliding zone and the coarse particles at the foot of the slope are accumulated.
关键词:  Shaking table test  Anti-slide pile  Bridge pile foundation  Dynamic response  Damage mode
DOI:10.19743/j.cnki.0891-4176.201903012
分类号:
基金项目:This project was sponsored by the National Natural Science Foundation of China (51578467).
Shaking Table Tests on Bridge Foundation Reinforced by Anti-slide Piles on Slope
ZHOU Heng1,2, SU Qian1,2, LIU Jie1, YUE Fei1
1.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;2.Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Chengdu 610031, China
Abstract:
Based on the requirement of seismic reinforcement of bridge foundation on slope in the Chengdu-Lanzhou railway project, a shaking table model test of anti-slide pile protecting bridge foundation in landslide section is designed and completed. By applying Wenchuan seismic waves with different acceleration peaks, the stress and deformation characteristics of bridge pile foundation and anti-slide pile are analyzed, and the failure mode is discussed. Results show that the dynamic response of bridge pile and anti-slide pile are affected by the peak value of seismic acceleration of earthquake, with which the stress and deformation of the structure increase. The maximum dynamic earth pressure and the moment of anti-slide piles are located near the sliding surface, while that of bridge piles are located at the top of the pile. Based on the dynamic response of structure, local reinforcement needs to be carried out to meet the requirement of the seismic design. The PGA amplification factor of the surface is greater than the inside, and it decreases with the increase of the input seismic acceleration peak. When the slope failure occurs, the tension cracks are mainly produced in the shallow sliding zone and the coarse particles at the foot of the slope are accumulated.
Key words:  Shaking table test  Anti-slide pile  Bridge pile foundation  Dynamic response  Damage mode