Impact forces on the sea bed created by wave uprush
- سال انتشار: 1379
- محل انتشار: چهارمین کنفرانس بین المللی سواحل و بنادر و سازه های دریایی
- کد COI اختصاصی: ICOPMAS04_179
- زبان مقاله: انگلیسی
- تعداد مشاهده: 1623
نویسندگان
Lecturer, Civil Engineering Dept. Queen’s University Belfast Belfast BT۷ ۵AD, UK
Postgraduate student, Civil Eng. Dept., Queen’s University Belfast
چکیده
Breaking waves, when hitting a coastal structure, create high impact pressures and – probably more spectacular - throw a mass of water high up into the air, indicating the energy contained in the wave.The impact pressures are known to propagate away from the sea wall, generating pressures and pressure gradients on the sea bed and possibly damaging toe protection elements or eroding the bed.So far, these pressures were attributed to the wave impact itself; the effect of the down falling water mass on the area in front of the structure has not yet been investigated. A series of model tests was conducted at Queen’s University in order to investigate downfall generated pressures in front of a model sea wall. It was found that comparatively large, impact-type pressures and pressure oscillations occur during the initial stage of the downfall with magnitudes up to 8% of the highest horizontal pressures. The experiments showed that water-water impacts can generate substantial pressures which then travel through the water masses. Downfall generated pressures may be more significant for the stability of toe protection elements than impact-induced pressures since the downfall generated pressures are immediately followed by a large water mass flowing towards the sea.کلیدواژه ها
wave impact, impact pressure, pressure propagation, seabed pressures, sea wall, wave downfallاطلاعات 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.