NUMERICAL STUDY OF EFFECTS OF SUPERSTRUCTURE ON DYNAMIC RESPONSE OF A 3×3 PILE GROUP
سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 489
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شناسه ملی سند علمی:
SEE08_048
تاریخ نمایه سازی: 27 خرداد 1399
چکیده مقاله:
The behavior of piles under seismic loading is a complex soil-pile-structure interaction which its evaluation may be a very important issue in geotechnical design of piles. Earthquake can cause lateral loads on piles. These loads can be attributed to both kinematic interactions between soil and piles and to inertial interactions between superstructure and piles. Some investigations have been carried out to study the soil-pile-structure interaction, but most of these studies are limited to two-dimensional behavior, and are mainly focused on the superstructure response. The purpose of this paper is to study the three-dimensional dynamic response of piles in soil-pile-structure system using explicit scheme finite difference program, FLAC3D software. In this paper, in the framework of a set of fully nonlinear 3D numerical analyses in time domain a group of 3×3 piles embedded in cohesive soil is analyzed under the action of seismic loading, and the behavior of pile group is investigated in the absence as well as the presence of a superstructure. The results of this study clearly demonstrate the influence of mass of superstructure and soil stiffness on bending moments induced in the pilegroup subjected to seismic loading.
کلیدواژه ها:
نویسندگان
Sadjad Hadei
Ph.D. Candidate, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran
Mohammad M. Ahmadi
Professor, Department of Civil Engineering, Sharif University of Technology, Tehran, Iran