有限元法介入工程的程度是以往从来没有过的

Involvement degree of finite element method in engineering is unprecedented

三峡二期围堰是一项极具挑战性的土建工程。其方案可靠性的论证与优化不是一般规范方法可以解决的。20世纪80年代初,为了预测其工作性状,验证方案的安全可靠性并优化方案,采用了当时刚引入我国不久的有限元数值分析方法进行了分析研究。在"七五"、"八五"国家重点科技攻关项目下,先后组织了全国15家单位,数十位有经验的专家共同参与,持续时间长达十多年,成果十分丰富。其成果对二期围堰的设计和施工起了不可替代的作用,对我国岩土数值分析技术的臻进和推广也大有助益,是数值分析技术在大型工程中成功应用的典型事例。

The second stage cofferdam of the Three Gorges project was very challenging.The demonstration and optimization of reliability cannot be solved by general normative methods.In the early 1980 s,numerical analysis of the finite element method was just introduced to China,it was used to predict the working behavior,verify the safety and reliability,and optimize the project.With the supposit of the‘Seventh Five-Year Plan’and‘Eighth Five-Year Plan’National Key Scientific and Technological Research Projects of China,15 institutions and dozens of experienced experts participated in this project for decades.And the results achieved played an irreplaceable role in the design and construction of second stage cofferdam.Moreover,the obtained results also stimulated the improvement and popularization of geotechnical numerical analysis in China.The project served as a typical example of the successful application of numerical analysis in large-scale projects.