نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناس ارشد سازه‌های دریایی، دانشگاه تبریز

2 استاد دانشکده عمران دانشگاه تبریز

چکیده

سکوهای جکتی همواره در معرض نیروها و شرایط مختلف و خشن محیطی قرار دارند که با توجه به اهمیت این سکوها، مدنظر قرار دادن شرایط مختلف موثر و ارزیابی رفتار سکوهای موجود در قبال این شرایط و عوامل محیطی امری ضروری به نظر میرسد. یکی از این عوامل مهم، خوردگی اعضای فولادی این سکوها در دریاهاست. از دیگر عوامل موثر در رفتار یک سیستم، شرایط مرزی یا همان شرایط تکیه گاهی آن بوده و همچنین برخی از اعضای این سکوها در هنگام پدیده جزر و مد شرایط محیطی مختلفی اعم از داخل و یا خارج از آب بودن را نیز تجربه میکنند که به نظر میرسد این امر نیز میتواند در روند نتایج بررسیها تأثیرگذار باشد. لذا با توجه به اهمیت موضوعات ذکر شده، در تحقیق حاضر به ارزیابی تأثیر شرایط خوردگی، شرایط تکیه گاهی و شرایط محیطی مختلف در روند تغییرات فرکانسهای ارتعاشات طبیعی اعضای سکوی پایه ثابت SPD1 واقع در خلیج فارس پرداخته شده است که نتایج حاکی از اهمیت زیاد تأثیر هر یک از عوامل ذکر شده در روند نتایج به دست آمده در گذر زمان میباشند. کلمات کلیدی : سکوی جکتی، خوردگی، شرایط محیطی، شرایط مرزی و فرکانس‌های طبیعی

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The Effect of Corrosion Phenomena Coincide with Changes in Environmental and Boundary Conditions of SPD1 Jacket Platform's Elements, in the Process of Changing the Natural Vibration Frequencies

نویسندگان [English]

  • Amin Razzaghi Kaljahi 1
  • Mohammad Ali Lotfollahi Yaghin 2

چکیده [English]

Jacket platforms are constantly exposed to harsh environmental conditions, so it seems necessary to assessment of existing platforms for various conditions and environmental factors. One of the most important factors is corrosion of steel elements of platforms at sea. In this research, effect of applying corrosion on members’ natural frequency changes is investigated. For this part of the study, some members with details of SPD1 members are assumed, and influence of corrosion on natural frequency changes, in two different conditions, under and out of water, with four support conditions, has been investigated. Keywords : Jacket Platform, Corrosion, Environmental Conditions, Boundary Conditions and Natural Frequencies

کلیدواژه‌ها [English]

  • Jacket Platform
  • Corrosion
  • Environmental Conditions
  • Boundary Conditions and Natural Frequencies

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