防洪堤坝地震动力响应及其稳定性分析  

Seismic Dynamic Response and Stability Analysis of Flood Control Dams

作　　者：龙俊杏 LONG Jun-xing(Guangdong Province Water Conservancy and Hydropower Third Engineering Bureau Co.Ltd.,Dongguan 523000,Guangdong,China)

机构地区：[1]广东省水利水电第三工程局有限公司,广东东莞523000

出　　处：《水利科技与经济》2023年第1期116-120,共5页Water Conservancy Science and Technology and Economy

摘　　要：采用有限元分析法和最小余能法相结合的二次分析法,分析不同材料防洪堤坝的震中动力学响应。结果显示,高聚物防护堤坝在地震波峰值加速度为0.4g时,对应的最大拉应力以及最大压应力分别为131.7和103.0kPa,均远小于其强度参数值,避免高聚物防洪堤坝因为拉裂受到损伤,受压损坏风险也较小,因此具有良好安全可靠性。In China, large rivers are widely distributed, so there are many flood control dikes and dams for prevention. However, these dikes and dams mostly consider factors such as landslide or leakage, but ignore the damage caused by earthquakes. Therefore, a secondary analysis method, which combines the finite element analysis method with the minimum complementary energy method, is proposed to analyze the epicenter dynamic response of flood control dams made of different materials. The results show that the maximum tensile stress and maximum compressive stress corresponding to the peak acceleration of seismic wave of 0.4g of the polymer protective embankment are 131.7 and 103.0kPa, respectively, which are far less than their strength parameters. Therefore, the polymer flood control dam is difficult to be damaged due to tension cracking, and the risk of damage due to compression is small, so it has good safety and reliability.

关 键 词：防护堤坝 地震 高聚物 应力 动力学 

分 类 号：TV641[水利工程—水利水电工程]