Soft Settlement Analysis And Reliability Study Fo Land Reclamation Revetment Project

Abstract:With the social development and population growth,there has been an increasing number of coastal land reclamation project. In the land reclamation revetment project, the asymmetry of revetment structure and characteristic of soft soil foundation with high water content,small coefficient of permeability, large void ratio, high compressibility, low shear strength, high sensitivity,lead to the settlement of solf foundation is too large or the settlement is uneven,and affect the safety and stability of revetment engineering seriously.Although in domestic and foreign, the method and theory of settlement of soft soil foundation,have improved and are more and more mature, there are few research achievements on reclamation revetment project. Therefore, it is necesarry for we to put more effects to research on settlement of soft foundation of reclamation revetment project. Then,it can guide the design and construction of reclamation revetment engineering, and improve the safety and economy of revetment engineering.Based on the research achievements of the former scholars, and combined with a Engineering examples of reclamation revetment engineering,the main work is summarized as follows:1. Design the field monitoring scheme of the settlement of soft foundation of reclamation revetment project,and get a large amount of useful data. Comebined with the data, it analysis the settlemente mechanism and settlemente rule of soft foundation of reclamation revetment project.2. We get the the final settlement of soft foundation of reclamation revetment project by the theoretical formula method, grey theory method and hyperbola method, and compare with each other. We predict the of settlement of soft foundation of reclamation revetment project with grey theory method and hyperbola method, and compare with the measured settlement. Combine gray theory with hyperbolic theory to produce combinations prediction, then get the prediction result and made it compare with the measured settlement. 3. By the use of the finite element analysis software ANSYS, it establish the Calculation model of soft foundation of reclamation revetment project by taking the Drucker-Prager as the constitutive model. And we compare and analysis the The calculation results and the measured result. It verifys the correctness of the model.4. Using the established calculation model of soft foundation of reclamation revetment project, analysis the influence of parameters on the settlement,such as deformation modulus, poisson ratio, internal friction angle, cohesion. According to the influence degree of parameters on the settlement,the order from large to small is poisson’s ratio, deformation modulus, cohesion, internal friction angle.5. We take a typical cross section of ZH KO+300of reclamation revetment project as the research object,and we analysis the typical cross section by the reliability theory. We verify the rationality of the design of revetment engineering and analysis the influence of height ratio of revetment structure on reliability of revetment engineering.