3D-FEM analysis for earthquake resistance reinforcement method of pile foundation using ground solidification body

• Published in: Journal of Structural Engineering, A Vol. 56A; pp. 1075 - 1087
• Main Authors: Urano, Kazuhiko, Adachi, Yuji, Kawamura, Makoto
• Format: Journal Article
• Language: Japanese
• Published: Japan Society of Civil Engineers 2010
• Subjects: 3D-FEM; earthquake resistance reinforcement; ground solidification; pile
• ISSN: 1881-820X
• DOI: 10.11532/structcivil.56A.1075

An earthquake resistance reinforcement method for existing pile foundation, which is based on ground solidification techniques a portion of ground surrounding the pile foundation to confine the deformation of pile foundation and thus enhance their lateral resistance, has been put into practical application on the site. In detailed investigation of stress and deformation behaviors of this method, 3-D statically non-linear FEM analyses were carried for the full-scale loading test paying attention to the interaction between piles, reinforcement body and ground, from that reinforcement mechanism was evaluated. Moreover, 3-D dynamic non-linear FEM analyses were also carried out in order to clarify influences such as different input motion and reinforcement body arrangement on the foundation behaviors under dynamic loading conditions and reinforcing effectiveness.