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直纹渐变曲面管道的构成与分析
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作者 高旭 《扬州工学院学报》 1997年第2期18-23,共6页
应用微分几何、空间解析几何以及画法几何,提出了构成两种典型的直纹渐变曲面管道的简易可行的方法;并以这两种管道为例,对其横断面的变化及函数方程进行了详尽的讨论和分析,对一般直纹渐变曲面也进行了讨论与分析。
关键词 直纹渐变曲面 管道 横断面 曲面管理
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F-N curved surface method for establishing the integrated risk criteria of dam failure 被引量:7
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作者 GU ShengPing 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第3期597-602,共6页
It is of great importance to establish the dam failure risk criteria for dam risk assessment and management. Presently, the F-N curve method is widely applied in practice, in which the F-N curves are used for establis... It is of great importance to establish the dam failure risk criteria for dam risk assessment and management. Presently, the F-N curve method is widely applied in practice, in which the F-N curves are used for establishing the criteria for separate risks caused by the dam failure in life, economy, environment, and society respectively. In this paper, in consideration of the overlying effect by two or more types of risk losses resulting from the dam failure at the same time, the F-N curved surface method is presented for establishing the integrated dam failure risk criteria. In this method, the named F-N curved surfaces are established, and by these curved surfaces, the acceptable, the allowable, and the unallowable integrated risk zones can be defined. 展开更多
关键词 dam failure risk assessment separate risk criteria F-N curve method integrated risk criteria F-N curved surface method
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