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Integrated fuzzy lectotype optimization for pile－style foundations of offshore wind turbines

Zhai Gangjun,Li Yugang,Kang Haigui

Strategic Study of CAE 2010, Volume 12, Issue 11,   Pages 40-46

Abstract:

Offshore wind energy is one of the most attractive sources of renewableenergy,however, the economics of offshore wind turbines especially foundations are currently challengesBecause of the difficulties met in conception design of offshore wind turbines foundations, a multi-levelwind farm for the lectotype optimization of pile-style foundations.wind turbines foundations.

Keywords： offshore wind turbines     pile-style foundation     lectotype optimization     fuzzy decision    

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Influence of site conditions on seismic design parameters for foundations as determined via nonlinear

Muhammad Tariq A. CHAUDHARY

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 275-303 doi: 10.1007/s11709-021-0685-0

Abstract: The geotechnical parameters required for the design of foundations include mass density ( ), dampingThe need to incorporate and in the metrics for determining , , and for the seismic design of foundations

Keywords： site effects     1D seismic site response analysis     sensitivity analysis     foundations     shear wave velocity     soil    

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Model testing of tripod caisson foundations in silty clay subjected to eccentric lateral loads

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 467-476 doi: 10.1007/s11709-023-0933-6

Abstract: In this study, model tests were conducted to investigate the bearing capacities of tripod caisson foundationsLateral load–rotation curves of five eccentric-shaped tripod suction foundations were plotted to analyzeIt was observed that the loading angle significantly influenced the bearing capacity of the foundations, particularly for eccentric tripod caisson foundations.Compared with eccentric tripod caisson foundations, the traditional tripod foundation has a relatively

Keywords： tripod caisson foundation     silty clay     eccentric lateral capacity     model tests    

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LNG-FPSO: Offshore LNG solution

GU Yan, JU Yonglin

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 249-255 doi: 10.1007/s11708-008-0050-1

Abstract: exploitation, recovery, storage, transportation and end-use applications of marginal gas fields and offshore

Keywords： associated-gas     LNG-FPSO     transportation     recovery     effective    

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Drivability of Large Diameter Steel Cylinders during Hammer-Group Vibratory Installation for the Hong Kong–Zhuhai–Macao Bridge Article

W.J. Lu,B. Li,J.F. Hou,X.W. Xu,H.F. Zou,L.M. Zhang,

Engineering 2023, Volume 20, Issue 1,   Pages 180-191 doi: 10.1016/j.eng.2021.07.028

Abstract:

The Hong Kong–Zhuhai–Macao Bridge (HZMB) involved the installation of 120 mega-cylinders with a diameter of 22 m, weights up to 513 tonnes, and penetration depths up to 33 m using an eight-vibratory hammer group. Due to the lack of engineering experience on the drivability of large-diameter cylinders under multiple vibratory hammers, predicting the penetration rate and time of steel cylinders is an open challenge that has a considerable impact on the construction control of the HZMB. In this study, the vibratory penetration of large-diameter steel cylinders in the HZMB is investigated based on geological surveys, field monitoring, and drivability analysis. The vibratory penetration rate, installation accuracy, and dynamic responses of the steel cylinders at both the eastern and western artificial islands are analyzed. The dynamic soil resistance has a great influence on the cylinder drivability. However, the current design methods for estimating the vibratory driving soil resistance are proven inaccurate without considering the scale effects. Therefore, a modified method with a normalized effective area ratio A¯r,eff is proposed in this study to calculate the vibratory soil resistance for open-ended thin-wall cylinders under unplugged conditions. Considering the scale effects on the vibratory driving soil resistance, the proposed method leads to closer results to the measured data, providing a reference for future engineering practice.

Keywords： Bridge     Vibratory pile driving     Wave equation analysis     Large-diameter steel cylinder     Artificial island     Offshorefoundations    

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Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation

Sergio A. MARTÍNEZ-GALVÁN, Miguel P. ROMO

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 67-80 doi: 10.1007/s11709-017-0399-5

Abstract: This type of foundation seems to be a highly competitive alternative to the friction pile-box foundationsConsidering these facts and others regarding scheduling, it was decided to replace 48-friction pile-box foundationsThe overall behavior of these cell foundations over a five-year period is fared from close visual observations

Keywords： deep foundations     bearing capacity     resistant moment     structural cell     3D numerical modeling    

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Investigation of the seismic behavior of grouted sandy gravel foundations using shaking table tests

Tiancheng WANG; Yu LIANG; Xiaoyong ZHANG; Zhihuan RUAN; Guoxiong MEI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 9,   Pages 1196-1211 doi: 10.1007/s11709-022-0865-6

Abstract: Sandy gravel foundations exhibit non-linear dynamic behavior when subjected to strong ground motions,Grouting methods can be used to improve the seismic performance of natural sandy gravel foundations.The strength and stiffness of grouted sandy gravel foundations are different from those of natural foundationsFew studies have investigated the seismic behavior of sandy gravel foundations before and after groutingAdditionally, the dynamic stress-strain relationships of the two foundations were obtained by a linear

Keywords： sandy gravel foundation     grouting-treated reinforcement     shaking table test     seismic behavior    

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Innovative piled raft foundations design using artificial neural network

Meisam RABIEI, Asskar Janalizadeh CHOOBBASTI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 138-146 doi: 10.1007/s11709-019-0585-8

Abstract: Several studies have been conducted to understand the behavior of these types of foundations, which are

Keywords： innovative design     piled raft foundation     neural network     optimization    

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Development Path of Offshore Drilling Equipment in China

Liu Jian

Strategic Study of CAE 2020, Volume 22, Issue 6,   Pages 40-48 doi: 10.15302/J-SSCAE-2020.06.006

Abstract:

China has made achievements in offshore drilling equipment, and it canTo accelerate the development of China’s offshore drilling equipment, this study first analyzesTo clarify the development path of the offshore drilling equipment, China should establish and improvethe standards and specifications regarding offshore drilling rigs; develop different types of deep-water

Keywords： offshore drilling rig     deep-water drilling rig     development of equipment     test     sea test    

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Detection of damage locations and damage steps in pile foundations using acoustic emissions with deep

Alipujiang JIERULA, Tae-Min OH, Shuhong WANG, Joon-Hyun LEE, Hyunwoo KIM, Jong-Won LEE

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 318-332 doi: 10.1007/s11709-021-0715-y

Abstract: aim of this study is to propose a new detection method for determining the damage locations in pile foundationsFinally, a new damage detection and evaluation method for pile foundations is proposed.This new method is capable of continuously detecting and evaluating the damage of pile foundations in

Keywords： pile foundations     damage location     acoustic emission     deep learning     damage step    

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Quality and efficiency improvement technology for five megawatt offshore wind turbines and its application

Huali HAN

Frontiers of Engineering Management 2020, Volume 7, Issue 4,   Pages 618-621 doi: 10.1007/s42524-020-0142-0

Keywords： renewable energy     megawatt offshore wind turbine     technology-driven     quality improvement    

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Comparison research on offshore oil and gas development of China and Brazil

Li Huaiyin and Li Hongwei

Strategic Study of CAE 2014, Volume 16, Issue 3,   Pages 21-26

Abstract: The offshore oil and gas development perspectives are all very broad.Chinese offshore resources are onethird of total resources and one quarter of total production.More than90% Brazilian oil production is offshoreThe starting points of offshore oil and gas industry of two countries are similar，but the developingChina has grasped the shallow water offshore technologies，achieved important progress in deep water fieldBasing on analyzing and comparing offshore oil and gas development of the two countries，three specific

Keywords： China     Brazil     offshore oil and gas     offshore engineering technology     comparison research     suggestions    

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Research on the non-grid-connected diverse application of large scale offshore wind power—explorationon changing offshore wind power transmission into product transmission ashore

Gu Weidong

Strategic Study of CAE 2010, Volume 12, Issue 11,   Pages 78-82

Abstract: text-align: justify;">For high cost, hard grid connection and high failure probability of large-scale offshoreBreaking the single on-grid application mode of large-scale offshore wind power, the system directlycouples offshore wind power with high-energy consumption industries (such as seawater desalination, hydrogenIt uses offshore wind power and changes power transmission into product transmission ashore, which notdifficult problem of large-scale, super-large-scale wind power application but also saves the investment of offshore

Keywords： offshore wind power     non-grid-connected     seawater desalination     hydrogen production     electrolytic aluminum    

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Reliability-based design optimization of offshore wind turbine support structures using RBF surrogate

Frontiers of Structural and Civil Engineering   Pages 1086-1099 doi: 10.1007/s11709-023-0976-8

Abstract: Reliability-based design optimization of offshore wind turbine support structures using RBF surrogate

Keywords： RBF     surrogate model     turbine support structures    

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Exploration and practice of offshore oilfield effective development technology

Zhou Shouwei

Strategic Study of CAE 2009, Volume 11, Issue 10,   Pages 55-60

Abstract: The offshore heavy oil development could neither directly use onshore experience for the reference norIn this paper, the main challenges were analyzed and presented for offshore heavy oil development basedon the characteristics of offshore oil field.And currently the mode has been widely applied to more offshore oil fields.ideals for the development of global offshore oil fields, especially for the heavy oil fields.

Keywords： offshore oil field     efficient development     heavy oil     marginal oil field     the optimized fast drilling    

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Title Author Date Type Operation

Integrated fuzzy lectotype optimization for pile－style foundations of offshore wind turbines

Zhai Gangjun,Li Yugang,Kang Haigui

Journal Article

Influence of site conditions on seismic design parameters for foundations as determined via nonlinear

Muhammad Tariq A. CHAUDHARY

Journal Article

Model testing of tripod caisson foundations in silty clay subjected to eccentric lateral loads

Journal Article

LNG-FPSO: Offshore LNG solution

GU Yan, JU Yonglin

Journal Article

Drivability of Large Diameter Steel Cylinders during Hammer-Group Vibratory Installation for the Hong Kong–Zhuhai–Macao Bridge

W.J. Lu,B. Li,J.F. Hou,X.W. Xu,H.F. Zou,L.M. Zhang,

Journal Article

Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation

Sergio A. MARTÍNEZ-GALVÁN, Miguel P. ROMO

Journal Article

Investigation of the seismic behavior of grouted sandy gravel foundations using shaking table tests

Tiancheng WANG; Yu LIANG; Xiaoyong ZHANG; Zhihuan RUAN; Guoxiong MEI

Journal Article

Innovative piled raft foundations design using artificial neural network

Meisam RABIEI, Asskar Janalizadeh CHOOBBASTI

Journal Article

Development Path of Offshore Drilling Equipment in China

Liu Jian

Journal Article

Detection of damage locations and damage steps in pile foundations using acoustic emissions with deep

Alipujiang JIERULA, Tae-Min OH, Shuhong WANG, Joon-Hyun LEE, Hyunwoo KIM, Jong-Won LEE

Journal Article

Quality and efficiency improvement technology for five megawatt offshore wind turbines and its application

Huali HAN

Journal Article

Comparison research on offshore oil and gas development of China and Brazil

Li Huaiyin and Li Hongwei

Journal Article

Research on the non-grid-connected diverse application of large scale offshore wind power—explorationon changing offshore wind power transmission into product transmission ashore

Gu Weidong

Journal Article

Reliability-based design optimization of offshore wind turbine support structures using RBF surrogate

Journal Article

Exploration and practice of offshore oilfield effective development technology

Zhou Shouwei

Journal Article