Development Of New Type Of Erect Dike Of Cast-in-situ Concrete Thin-wall Pipe Pile And Study On The Moment Resistance Of The Dike

Focusing on the characteristics of dike engineering of the future, to guarantee the security of dike, meet the time limit for a project, this paper is to develop the Erect Dike of Cast-in-situ Concrete Thin-wall Pipe Pile and conduct a research on its moment resistance in order to build dike on soft soil and deep water level. This paper carries out the following tasks:1. Summarizing the history and present state of dike, and the computational theories and methods of the laterally loaded pile. Some problems are raised. And the importance of development of erect dike of PCC is discussed.2. Developing erect dike of PCC, making two kinds of the dike, devising the construction methods and techniques of the dike, expounding its merits.3. When the joined PCC is used as rigid pile, and at the state of free rotation, rotation about top, rotation about base, translation are taken into consideration. Computational methods has been improved.4. When the joined PCC is used as flexible pile, the plastic strain is considered. Zhao Minghua's newmark method has been modified. After comparing with the experimental data, the correctness of the new method is validated. The new method is applied to analyze the influence of the parameter of pile and soil on displacement and movement of the pile.5. Based on the Goda Formular, the Computational methods of wave pressure, which is fit for the dike, are put forward. A contrast between the dike and dike made of absolute erect dike is made. The conclusion is that wave pressure of the dike is smaller than that of absolute erect dike.6. Analysis of measures of adding geotextile and anchoring to the dike is made with finite element method.