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Research and Design of Caisson Platform with Underwater Piles Used in Shallow Water

Author: FengChunJian
Tutor: ZuoXiangZuo
School: China University of Petroleum
Course: Mechanical Engineering
Keywords: Shallow water Single Column Platform Fuzzy Optimization Reliability Finite Element Analysis Platform design
CLC: U656.6
Type: Master's thesis
Year: 2010
Downloads: 81
Quote: 0
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Abstract


Of shallow water and extremely shallow sea oilfield development , marine fixed platform is mostly JACKET structure , the jacket platform technology is mature , safe and reliable , but the cost and the amount of steel are two reasons to make it in the development of remote oil region will be restricted. Chengdao oilfield water depths shallower ice conditions are more serious scour the seabed the marginal oilfield produced fluids to enter the oil field pipe network specific environmental conditions and oil field characteristics apply to the Ice Zone , and has better vibration the performance of underwater pile foundation single the column platform structure . Papers using fuzzy optimal decision-making method based on precedence relationships , and to optimize the selection of specific environments and requirements of existing single- column platform in the form , and filter out the more appropriate basic platform structure , and on this basis, to transform , to be met Chengdao sea environment characteristics and objectives of the project functional requirements single Column three underwater platform in the form . Single- column support platform structure is simple, less redundant components , consider the design and analysis of variability, randomness and fuzziness uncertainties affect the reliability analysis of each member of the Single Column Platform , on this basis , the unipole platform the fuzzy optimization analysis , the structure of the system to achieve reasonable reliability based on system optimization . Single the uprights platform structure fuzzy optimization based on the use of offshore platform structure analysis of professional software SACS software , and in full accordance with API , AISC and DNV specification unipole platform detailed structural analysis , including : static analysis, dynamic analysis fatigue analysis . The results show that : the overall strength and stability of the unipole platform to meet the specification requirements . Support piles and unipole tower foundation underwater connection is part of the key technologies of the platform of the Single Column . Underwater pile top connection using mechanical tooth combining connection , this connection is more secure and reliable offshore construction risk , whether it is in the normal tour of duty of the Single Column offshore installation or platform , able to provide a reliable connection . Pile unipole tower based connection using underwater irrigation PAE cement mortar connection , design of key components - grouting packer , packer structure is simple, reliable , high pressure , suitable for underwater grouting seal .

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CLC: > Transportation > Waterway transport > Port projects > Port of hydraulic structures > Floating platform
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