In order to study the stability of reservoir bank bridge foundation slope under the fluctuation of reservoir water level,the indoor physical test was carried out,taking the reservoir bank bridge foundation slope in southwest China as an example.Based on the unsaturated seepage theory,the geostudio software was used to calculate the seepage field,displacement field and stability coefficient of the slope under different water level fluctuation rates.The results show that when the water level rises and falls,the infiltration line in the slope has both synchronization and hysteresis,and the hysteresis increases with the increase of the water level rise and fall rate.The lateral displacement of the slope increases rapidly and then decreases slowly when the water level rises and falls.The maximum lateral displacement occurs on the left bank slope of the bridge foundation.With the increase of the rise and fall rate of the water level,the change rate of the lateral displacement in the early stage becomes faster and the change range increases.The stability coefficient increases rapidly and then decreases gradually when the water level rises,and decreases rapidly and then increases slowly when the water level falls.
关键词
桥基岸坡/库水位升降/渗流场/位移场/稳定性系数
Key words
reservoir bank bridge foundation slope/reservoir water level rise and fall/seepage field/displacement field/coefficient of stability
维普
万方数据