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Fu-Ping Gao

Bio: Fu-Ping Gao is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Submarine pipeline & Seabed. The author has an hindex of 22, co-authored 81 publications receiving 1154 citations. Previous affiliations of Fu-Ping Gao include University of Sydney & University of Western Australia.


Papers
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TL;DR: In this article, the wave-induced upward seepage under the wave troughs may weaken the buoyant unit weight of the surrounding sand, which brings the sand-bed more susceptible to scouring.

137 citations

Journal ArticleDOI
TL;DR: In this article, the coupling effects between pipeline vibration and sand scour are investigated experimentally, and it is shown that there often exist two phases in the process of sand scouring around the pipeline with an initial embedment.

90 citations

Journal ArticleDOI
TL;DR: In this paper, a series of centrifuge model tests with various scour profiles were conducted at a scale of 1:250 to investigate the effects of both local and general scour on the response of a laterally loaded pile.
Abstract: Soil scour around a shallowly embedded pile can significantly compromise its lateral response, reducing both stiffness and capacity. Estimation of the lateral pile response must take into account both the scour-hole geometry and the overconsolidation effects on the remaining soil. A series of centrifuge model tests with various scour profiles were conducted at a scale of 1:250 to investigate the effects of both local and general scour on the response of a laterally loaded pile. Measured pile moment distributions and force–displacement data at the pile head were used to derive p–y curves quantifying the lateral pile–soil interaction. The p–y curves derived from various scour profiles were compared for equivalent depths below the new scour base, and below the original soil surface. For the general scour cases, the p–y curves for given depths below the post-scour surface are essentially identical to those at the same depths without scour. In contrast, for the local scour cases, the p–y response at a given de...

83 citations

Journal ArticleDOI
TL;DR: The results indicate that ML models outperform empirical prediction formulations with lower prediction error and the predicted correlations between input and output variables using five ML models show great agreement with the physical explanation.
Abstract: Compression index Cc is an essential parameter in geotechnical design for which the effectiveness of correlation is still a challenge. This paper suggests a novel modelling approach using machine learning (ML) technique. The performance of five commonly used machine learning (ML) algorithms, i.e. back-propagation neural network (BPNN), extreme learning machine (ELM), support vector machine (SVM), random forest (RF) and evolutionary polynomial regression (EPR) in predicting Cc is comprehensively investigated. A database with a total number of 311 datasets including three input variables, i.e. initial void ratio e0, liquid limit water content wL, plasticity index Ip, and one output variable Cc is first established. Genetic algorithm (GA) is used to optimize the hyper-parameters in five ML algorithms, and the average prediction error for the 10-fold cross-validation (CV) sets is set as the fitness function in the GA for enhancing the robustness of ML models. The results indicate that ML models outperform empirical prediction formulations with lower prediction error. RF yields the lowest error followed by BPNN, ELM, EPR and SVM. If the ranges of input variables in the database are large enough, BPNN and RF models are recommended to predict Cc. Furthermore, if the distribution of input variables is continuous, RF model is the best one. Otherwise, EPR model is recommended if the ranges of input variables are small. The predicted correlations between input and output variables using five ML models show great agreement with the physical explanation.

70 citations

Journal ArticleDOI
TL;DR: In this paper, the Strouhal number (St) is around 0.2 for the stationary cylinder near a plane boundary in the subcritical flow regime, and with increasing gap-to-diameter ratio (e (0)/D), the amplitude ratio (A/D) gets larger but frequency ratio (f/f (n) has a slight variation for the case of larger values of e (0)D (e(0) > 0.66 in this study); there is a clear difference of amplitude and frequency responses of the cylinder between the larger gap
Abstract: In this study, the vortex-induced vibrations of a cylinder near a rigid plane boundary in a steady flow are studied experimentally. The phenomenon of vortex-induced vibrations of the cylinder near the rigid plane boundary is reproduced in the flume. The vortex shedding frequency and mode are also measured by the methods of hot film velocimeter and hydrogen bubbles. A parametric study is carried out to investigate the influences of reduced velocity, gap-to-diameter ratio, stability parameter and mass ratio on the amplitude and frequency responses of the cylinder. Experimental results indicate: (1) the Strouhal number (St) is around 0.2 for the stationary cylinder near a plane boundary in the sub-critical flow regime; (2) with increasing gap-to-diameter ratio (e (0)/D), the amplitude ratio (A/D) gets larger but frequency ratio (f/f (n) ) has a slight variation for the case of larger values of e (0)/D (e (0)/D > 0.66 in this study); (3) there is a clear difference of amplitude and frequency responses of the cylinder between the larger gap-to-diameter ratios (e (0)/D > 0.66) and the smaller ones (e (0)/D < 0.3); (4) the vibration of the cylinder is easier to occur and the range of vibration in terms of V (r) number becomes more extensive with decrease of the stability parameter, but the frequency response is affected slightly by the stability parameter; (5) with decreasing mass ratio, the width of the lock-in ranges in terms of V (r) and the frequency ratio (f/f (n) ) become larger.

62 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the present state of knowledge concerning geotechnical and structural issues affecting foundation types under consideration for the support structures of offshore wind turbines, and recommendations for future research and development are provided.
Abstract: Offshore wind is a source of clean, renewable energy of great potential value to the power industry in the context of a low carbon society. Rapid development of offshore wind energy depends on a good understanding of technical issues related to offshore wind turbines, which is spurring ongoing research and development programmes. Foundations of offshore wind turbines present one of the main challenges in offshore wind turbine design. This paper reviews the present state of knowledge concerning geotechnical and structural issues affecting foundation types under consideration for the support structures of offshore wind turbines, and provides recommendations for future research and development.

214 citations

01 Jan 2016
TL;DR: The advanced soil mechanics is universally compatible with any devices to read and is available in the digital library an online access to it is set as public so you can get it instantly.
Abstract: Thank you for downloading advanced soil mechanics. As you may know, people have search hundreds times for their chosen readings like this advanced soil mechanics, but end up in malicious downloads. Rather than reading a good book with a cup of coffee in the afternoon, instead they juggled with some harmful bugs inside their desktop computer. advanced soil mechanics is available in our digital library an online access to it is set as public so you can get it instantly. Our books collection spans in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the advanced soil mechanics is universally compatible with any devices to read.

212 citations

Journal ArticleDOI
TL;DR: A review of constitutive models for unsaturated soils is presented in this paper, focusing on the fundamental principles that govern the volume change, shear strength, yield stress, water retention and hydro-mechanical coupling.

190 citations

Journal ArticleDOI
TL;DR: In this article, a survey of existing studies on different methods of controlling the wake destructive behavior and suppression of vortex shedding behind bluff bodies are discussed, including the very recent developments, and the effectiveness of each technique on the drag reduction.

176 citations

Journal ArticleDOI
TL;DR: In this paper, the tip leakage vortex (TLV) trajectories were obtained by using the swirling strength method corresponding to the cross-sections of streamlines of the TLV.

140 citations