Authors: YANG Zheng-quan, LIU Xiao-sheng, LIU Qi-wang, WANG Xiao-gang (China Institute of Water Resources and Hydropower Research, Beijing 100048, China)

Abstract: Dynamic response characteristics of high rock-fill dams subjected to earthquake are greatly affected by their own dynamic characteristics. In this study, firstly, the dynamic characteristics and coherent regularity of the model for Lianghekou dam with height 295m, were obtained through shaking table model tests, and then the corresponding dynamic characteristics of prototype high rock-fill dam were obtained by the test results according to the similarity rules. The main conclusions include: basically the dam has a stable vibration mode under special seismic vibration, dynamic characteristics of the dam are affected by many factors, such as the vibration intensity, vibration history, reservoir impounding, and so on.

Key words: high rock-fill dam, shaking table model test, dynamic characteristics, natural frequency of vibration, damping ratio, seismic design

Published in: Journal of Hydraulic Engineering, Vol. 42, No. 10, 2011
Article ID: 0559-9350 (2011) 10-1226-08