Liquefaction-induced settlement and lateral spreading effects on buried pipelines by using shaking table tests

  • سال انتشار: 1401
  • محل انتشار: فصلنامه زلزله شناسی و مهندسی زلزله، دوره: 24، شماره: 1
  • کد COI اختصاصی: JR_JSEE-24-1_003
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 123
دانلود فایل این مقاله

نویسندگان

Mohammad Ahmadi

Assistant Professor, Malayer University, Malayer, Iran

Abbas Ghalandarzadeh

Associate Professor, Tehran University

چکیده

Due to the importance of buried pipelines, as one of the types of lifelines, it is necessary to consider all possible seismic hazards in their operation. Settlement and lateral spreading caused by liquefaction are among these risks. In this research, their effects have been investigated using two series of ۱-g shaking table tests. Results show that the maximum displacement applied to the pipe occurs during the shake is greater than the residual displacement after the shake. Also, by investigating the shear stress-shear strain curves (hysteresis loop), the reduction of shear stiffness due to the shake was observed. After liquefaction occurs, the soil loses its shear strength and the slope starts to move downstream. It is observed that the contribution of cyclic strains due to ground vibration is far less than the contribution of strain due to monotonic displacement. According to the findings of this research, the deformation of the pipe is less than the settlement of the ground due to the liquefaction.

کلیدواژه ها

Buried Pipeline, Liquefaction, Settlement, Lateral Spreading, ۱-g shaking table

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.