Experimental study on the applicability of Westergaard＇s formula for calculating earthquake-induced hydrodynamic pressure in small lake  

作　　者：Yiliang Zhou Lingkan Yao Hongzhou Ai Baoliang Wang 

机构地区：[1]School of Civil Engineering, Southwest Jiaotong University,Chengdu 610031, Sichuan, China [2]MOE Key Laboratory of High-speed Railway Engineering,Southwest Jiaotong University, Chengdu 610031, Sichuan,China [3]National Engineering Laboratory for Technology of Geological Disaster Prevention in Land Transportation,Chengdu 610031, China

出　　处：《Journal of Modern Transportation》2018年第1期49-56,共8页现代交通学报（英文版）

基　　金：financially supported by the Natural Science Foundation of China under contract No.41571004;National Key Research and Development Program(Grant No.2016YFC0802206);Research and Development Program of Science and Technology of China Railway Corporation(Grant No.2015G002-N)

摘　　要：Moraine-dammed lake outbursts usually threaten highways, railways, and key facilities in alpine regions. The varying amplitudes and distribution of hydrodynamic pressures significantly affect the stability of the dam. We utilize a shaking table to investigate the development of hydrodynamic pressure caused by different sinusoidal waves and seismic Wolong wave. A series of shaking table tests indicate that the hydrodynamic pressure varia- tion significantly follows seismic acceleration wave motion. The maximum hydrodynamic pressures calculated by Westergaard＇s equation are compared with the experi- mental values under different waves. It is shown that the Westergaard＇s values are lower than the experimental ones under the sinusoidal waves. However, the Westergaard＇s method is able to predict the earthquake-induced hydro- dynamic pressure caused by Wolong wave in small lake with desirable accuracy.Moraine-dammed lake outbursts usually threaten highways, railways, and key facilities in alpine regions. The varying amplitudes and distribution of hydrodynamic pressures significantly affect the stability of the dam. We utilize a shaking table to investigate the development of hydrodynamic pressure caused by different sinusoidal waves and seismic Wolong wave. A series of shaking table tests indicate that the hydrodynamic pressure varia- tion significantly follows seismic acceleration wave motion. The maximum hydrodynamic pressures calculated by Westergaard＇s equation are compared with the experi- mental values under different waves. It is shown that the Westergaard＇s values are lower than the experimental ones under the sinusoidal waves. However, the Westergaard＇s method is able to predict the earthquake-induced hydro- dynamic pressure caused by Wolong wave in small lake with desirable accuracy.

关 键 词：Moraine dam Hydrodynamic pressure Shaking table Westergaard Small lake 

分 类 号：TV312[水利工程—水工结构工程] U212.22[交通运输工程—道路与铁道工程]