论文部分内容阅读
本文所述研究工作概括为下列方面： 一、利用天然地震记录进行了频谱特征的统计分析，得出了各种条件下的地震卓越周期以及地震最大振幅中竖向分量和水平分量的比例关系。 二、利用爆炸地震波模拟天然地震，以激发大比例尺模型的水平和竖向振动。 三、通过大比例尺模型试验，研究了大头壩的自振特性，水平与竖向加速度分布和动应力分布，得到了壩休劫力系数分布图。 四、通过强震破坏试验，研究了大头壩最大抗震能力，指出壩顶部分是地震荷载最北集中的地方。
The research work described in this paper is summarized as follows: 1. Statistical analysis of spectral features was performed using natural seismic records, and the ratios of vertical and horizontal components of seismic excellence cycle under various conditions and the maximum amplitude of earthquakes were obtained. 2. Simulate natural earthquakes using explosive seismic waves to stimulate horizontal and vertical vibrations of large-scale models. Third, through large-scale model tests, the natural vibration characteristics of Datouba, distribution of horizontal and vertical accelerations, and distribution of dynamic stress were studied. 4. Through the strong earthquake damage test, the maximum seismic capacity of Datouba was studied, and it was pointed out that the top part of the dam was the place where the most concentrated earthquake load occurred.