Numerical Modeling and Parametric Study on Prefabricated Vertical Drain–A Case Study of Ground Improvement at Reference Section of SBIA(Second Bangkok International Airport)

• Main Authors: Yun-Hsien Chan, 詹昀憲
• Other Authors: Jeng-Jy Charng
• Format: Others
• Language: en_US
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/u8n549

碩士 === 國立成功大學 === 土木工程學系碩博士班 === 92 === ABSTRACT 　　A two-dimensional (2-D) Finite Element Method (FEM) simulation with a simulation scheme for smear effect and well resistance in Prefabricated Vertical Drain (PVD) improved ground was proposed and the computer program, SAGE CRISP, is employed through this study. The FEM analysis incorporated with the proposed matching schemes was performed on unit cell and full-scale PVD improved ground and to validate the effectiveness of numerical prediction. It was found that the numerical result appears good agreement with the theoretical solution of unit cell and field measurement that included the settlement rate, lateral movement and excess pore pressure of PVD improved ground of the Second Bangkok International Airport (SBIA) at reference section. 　　In addition, according to the posed numerical procedure, a series of parameter studies were performed on PVD installation parameters (such as PVD spacing, PVD installation depth), specific discharge capacity of PVD and specific fill height. Eventually, the parameter studies were analyzed to establish the design charts and to provide the reference for PVD improved ground.