论文部分内容阅读
本文假设地震动为平稳随机过程建立水坝多点激振的的传递幽数,由此分析地震动空间相关性对水坝地震反应的影响。 水坝由于坝基面很长,所以坝基面上地震输入完全相同的假定是不合乎实际的。但地震动空间分布的实测资料不多,人们对地震波传递规律还没有完全弄清楚,因此计算水坝等建筑物的地震行波反应时,往往作一些假定,如地震波在行进过程中波形和幅值不变,各激点输入的地震波仅存在相位差。 关于地震动空间相关性的研究,目前所见资料不多,文献提供了这种相关性的宝贵资料。本文应用这些资料,就地震动空间相关性对水坝地震反应的影响作初步的探讨。
In this paper, we assume that the ground motion is a stationary random process and establish the transfer mound of the dam multi-point excitation. Therefore, the influence of the spatial correlation of the ground motion on the dam’s seismic response is analyzed. Due to the long base of the dam, it is unrealistic to assume that the earthquakes on the dam foundation are exactly the same. However, there is not much data about the spatial distribution of ground motion and the transmission laws of seismic waves are not yet fully understood. Therefore, some assumptions are often made when calculating the seismic traveling wave response of buildings such as dams. For example, the waveform and amplitude of seismic waves The same, only the phase difference of the seismic waves input by each excitement exists. There is not much information we have seen so far on the spatial correlation of ground motion, and the literature provides valuable information on this correlation. In this paper, we use these data to make a preliminary discussion on the impact of spatial correlation of on-site earthquakes on the dam’s seismic response.