Using underground crossbeam to provide lateral resistances of pile with numerical method

• Main Authors: Tzu-lin Chen, 陳姿琳
• Other Authors: 張惠文
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/05302533733781896699

碩士 === 國立中央大學 === 土木工程研究所 === 95 === Pile foundations are often used in large constructions. It can transfer the weight of structures directly to stiff layer or rock ground. However, the lateral resistances of piles in soft ground are limited. In order to conform to the practicability, the lateral displacement of pile must be restrained in a certain limit. This study focused on the treated effects of lateral displacement by underground crossbeam. The underground crossbeam can provide lateral resistance for pile which bears lateral load. The lateral bearing behaviors of pile in soft soil layer were analyzed by finite element method. To perform the numerical analysis, FEM based software named ABAQUS was used in this research. The analytic mode is governed by three parameters including lateral load, underground crossbeam’s length and underground crossbeam’s thickness respectively. Finally, the research showed the best mode of treatment by this numerical analysis results. The numerical results indicated that the lateral displacement decreases as the underground crossbeam’s length and depth increase. Installing underground crossbeam beneath the ground surface can provide suitable horizontal resistance and decrease the lateral displacement of the pile.