A numerical study on seismic interaction between underground structures and liquefaction of the confined soils

• Main Authors: Yueh-Cheng Chou, 周岳正
• Other Authors: Chih-Wei Lu
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/15285149058839941092

碩士 === 國立高雄第一科技大學 === 營建工程所 === 95 === A 3D FEM program was used to analyze the seismic behaviors of confined soils of ground improvement. Taking 1995 Kobe Earthquake wave and sin wave as input and assuming that the ground was composed of different sandy soils, the numerical result show that liquefaction percentage of the enclosed soils decreased as a result of wall confinement and liquefaction strength of different sandy soils. The excess pore water pressure of countermeasured soils would be reduced by the horizontal displacement while the ground was improved. Horizontal movement was changed due to the improvements while the residual displacement became 0.83m in 80m×20m diaphragm soil improvement, 0.46m in pile type soil improvement and 0.46 in wall type soil improvement. The relation between displacement and liquefaction percentage must be considered in the design.