Evaluation model of dike safety based on cusp catastrophe theory
Evaluation indexes (monitoring value) set in safety evaluation of dike, it was difficult in conforming the range of evaluation indexes, and could not reflect characteristic of outburst destroy.Catastrophe theory is a kind of mathematical method that problems of transition, discontinuity, and abrupt qualitative change based on analysissitus, problems about how a system of continuous quantitative change to evolving into jumping qualitative change can be analyzed.Firstly, the relation between deformation of dike with components of water pressure, temperature and time effect is analyzed, subdivision lemma of cusp catastrophe theory is cheesed, expression of potential formula on horizontal deformation is carried out based on influence of factor of time, water pressure and temperature.Moreover, normal form of catastrophe is advanced and critical rules of dike safety are put forward, evaluation model based on catastrophe theory is established.Finally, the model is validated with dike of Yellow River.Analysis shows that evaluating conclusion of the model is as the same as the practice, and it can not only reflect outburst destroy character of dike, but also evaluate safety degree in quantity, thus the model is good in adaptability and precision.
dike safety evaluation catastrophe theory Yellow River
Xizhong Shen Xiaoping Yang Weidong Ma
Yellow River Institute of Hydraulic Research,Yellow River Conservancy Commission,China Research Cent Yellow River Institute of Hydraulic Research,Yellow River Conservancy Commission,China
国际会议
the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))
桂林
英文
1249-1253
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）