چکیده مقاله
This research investigates the dynamic response of 2×2 piles subjected to liquefaction induced lateral spreading A three dimensional finite element analysis was conducted using the OpenSees software In this research, a 2×2 steel pile group was modeled in sloping ground The ground consisted of three layers: a liquefiable layer between non liquefiable soil layers The critical state bounding surface elastic plastic sand model was employed to simulate the undrained behavior of saturated sand under dynamic loading At the same time, a coupled formulation was utilized to evaluate soil displacements and pore water pressures The numerical results were validated with a lg large scale shake table test In this study, the effects of input motion characteristics on the dynamic behavior of the pile system were investigated To achieve this purpose, two scaled earthquake records and a sinusoidal loading were applied to the model separately The results, including maximum pile bending moments and soil lateral displacements, were presented and discussed in this paper The results revealed the influence of harmonic and real motion on the pile behavior The harmonic loading caused a slightly higher bending moment in the piles It was found that the maximum bending moment in the piles occurred at the time corresponding to the peak ground velocity in the input motion
کلیدواژهها
نویسندگان
Mohammadreza Jalali Farahani
M Sc Student, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran
Morteza Rajabigol
Assistant Professor, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran
شیوه ارجاع
Jalali Farahani, Mohammadreza and Rajabigol, Morteza,1404,Numerical Analysis of Response of a 2×2 Pile Group to Liquefaction-Induced Lateral Spreading,14th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات چهاردهمین کنگره بین المللی مهندسی عمران29 مهر 1404 · تهران