海岸岩土工程的物理与数值模拟方法

采用物理模型试验来再现实际现象,验证数值模拟方法的有效性;同时采用数值模拟来弥补离心模型试验的缺陷,揭示模型试验规律,评价实际海岸岩土-结构系统在不同工况下的变形与强度稳定性及其变化.并简要地介绍了针对防波堤土工织物加筋垫层作用机理研究、黄骅港外航道防沙堤工程安全性评价、上海洋山港浅置式大圆筒结构试验段工程安全性评价三个具体项目进行评价的成果,初步展现了物理模型试验与数值模拟方法在海岸岩土工程的机理研究、方案论证、结构与施工优化、结构安全性评价等方面所能发挥的重要作用和广阔的应用前景.

Physical and numerical modeling methods in coastal geotechnical engineering

Centrifuge modeling was used to reproduce actual phenomenon and confirm the effectiveness of numerical methods, while numerical analysis was employed to explain the test results quantitatively and evaluate the deformation and stability for various soil-structure systems in coastal geotechnical engineering. Presented in this paper are the results obtained through the physical modeling and numerical analysis for practical coastal geotechnical engineering projects, including wave breaks and sediment-protecting dykes at the Huanghua Harbor in Tianjin and an in-situ testing bank with large-diameter cylinders at the Yangshan Harbor in Shanghai. The physical modeling and numerical analysis were shown to be a very powerful tool for explanation of the experimental phenomenon, evaluation of the deformation and stability, and optimization of the structure design schemes and their construction in coastal geotechnical practice.