A Preliminary Study on Distribution Law of Lateral Earthquake Load Along Slopes Height
Total 18 simulated acceleration time histories for intensity 6, 7, 8 and 9 were adopted as inputs, two different height slops which were located in some power station area were selected as the analyzed models which were simplified linear elastic models in computation, the seismic responses of the slopes and the horizontal variation of the maximum response accelerations at different height levels were analyzed by means of a wave propagation finite element method. The numerical results show that the acceleration changes along the height direction nonlinearly with a little bit complicated pattern, and the changing patterns, in general, are similar. The slopes, and it starts to increase rapidly with the height level at a height of half to two thirds of the total slopes height. It gets a maximum amplification value of 1.0 to 1.91 at the top of the slopes. In general, the maximum amplification factor increases gradually with the total height of the slopes, and just a few get values greater than 1.5 (about 0.5%). From these understanding, two coefficients of lateral seismic load with relative height (ratio of height to the total height of the slope) for these two slopes are proposed in this paper, and one is in a bilinear form, the other is in a fourth order exponential curve, both with the same maximum value of 1.5.
slope earthquake load distribution law of lateral earthquake load along height wave propagation finite element
CHEN Xianmai TAO Xiaxin WU Mingda CHEN Xueliang LI Guanqi CUI Gaohang
School of Civil Engineering, Harbin Institute of Technology, Harbin, China Seismological Bureau of Liaoning Province, Shenyang, China Institute of Geophysics, China Seismological Bureau, Beijing, China Southwest Research Institute of CREC, Chengdu, China
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）