Analysis of Failure Modes and Mechanism of Subgrade underEarthquakes and Recommendations for Improving Seismic Design
To study the seismic failure effect of subgrade, the field investigation and analysis of seismic failure of the subgrade are conducted, six seismic failure modes of the subgrade are proposed, (1) shallow surface sliding of slope, (2) development of slip surface within the body of subgrade, (3) development of slip surface reaching the foundation, (4) overall sliding of sloping subgrade, (5) slumping, and (6) desification. Meanwhile, the investigation shows that seismic subsidence rate and wave-like deformation amplitude rise with the increase of seismic intensity, the degree of subgrade damage is closely related to the characteristics of route selection. The research has analyzed the seismic damage mechanism of the subgrade, explores a new concept of seismic design based on allowable deformation proposed by Ikuo Towhata.
Subgrade engineering Field investigation Failure mode Seismic design
Su Qian Huang Junjie Li Shiyu Hu Huixing
School of Civil Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China
国际会议
上海
英文
398-402
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）