Vertical bearing capacity of bucket foundations in sand

Park, Jeong Seon; Park, Duhee; Yoo, Jin Kwon

doi:10.1016/j.oceaneng.2016.05.056

Cited by 39 publications

(9 citation statements)

References 27 publications

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“…Park et al established the finite element model of bucket foundation on sandy soil foundation and layered foundation, and studied the characteristics of vertical bearing capacity. The results show that the shear strength of sand and clay will affect the shape of failure surface of bucket foundation [15,16].…”

Section: -Blasting Compactionmentioning

confidence: 98%

Research on the application of Pile-bucket composite structure in the Silt Coast

Liu

Chen²,

Li³

2022

CEJ

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With the over-exploitation of high-quality coastlines, the site selection and construction of new ports have to be expanded to silt coast, which will bring about quite many technical difficulties in the construction of wharves and revetments, and the cost of investment will also rise sharply. In this paper, a kind of combined design scheme of the high-pile wharf and the bucket structure is proposed to solve the problems mentioned above. The high-pile wharf structure is meant to adapt to the silt foundation, while the bucket can help to improve the ground bearing capacity. The stability and displacement of the bucket structure, and the influence of displacement on high-pile wharf during the service period are analyzed using a finite element model. Analysis results indicate that the horizontal and vertical displacements of the bucket structure in the service period are reduced to sme extent compared with those in the construction period, and the maximum horizontal displacements of the lower barrel structure are 0.4cm more than those of the upper part.The difference between the vertical displacement on the seaside and the portside is 10.5cm, and a rotation of 0.2° occurred in the bucket. Besides, the working loads above the bucket have a significant influence on the horizontal displacement and sliding stability of the bucket in the service period. It can be known from the above conclusion that the composite structure is a kind of structure that can adapt to the conditions of soft soil underwater, and it has advantages of the construction period and cost when used in water depth and silt area, which provides useful experience for the silt coastal projects.

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Section: -Blasting Compactionmentioning

confidence: 98%

Research on the application of Pile-bucket composite structure in the Silt Coast

Liu

Chen²,

Li³

2022

CEJ

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“…Empirical depth factors were determined for dense, medium dense, and loose sands, and it was found that the bearing capacity increased linearly with embedment depth. Park et al [112] proposed a series of equations for calculating the bearing capacity of bucket foundations in sand, and recommended combined shape-depth factors for calculating the shaft bearing capacity of a bucket foundation. Bagheri et al [113] recently carried out an analysis of offshore wind turbine bucket foundations, and investigated the bearing behaviour of the bucket and the response of soil supporting the bucket in dense and medium dense sandy soils subjected to static horizontal loading.…”

Section: Capacity Of Bucket Foundations Under Monotonic Loadingmentioning

confidence: 99%

Foundations of offshore wind turbines: A review

et al. 2019

Renewable and Sustainable Energy Reviews

364

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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.

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“…Solov'ev (2008) studied the bearing capacity of the foundation soil beneath the cutting edge of an open caisson using limit equilibrium theory, and Chavda et al (2019) carried out a series of model tests to study the vertical bearing capacity and the soil flow mechanism around the cutting edge of an open caisson. Moreover, for offshore caisson foundations, the bearing capacity under combined V-H-M (vertical-horizontal-moment) loads was studied in clay (Zhang et al, 2011;Hung and Kim, 2014;Fu et al, 2018;Skau et al, 2018), sand (Cheng and Cassidy, 2016;Park et al, 2016;Jin et al, 2019), in sand over clay (Qiu and Henke, 2011;Park and Park, 2017;Zou et al, 2018), and in stiff over soft clay (Xia, et al, 2021). Some studies have also investigated the dynamic response of large embedded foundations (caisson foundations and anchorage open caissons) under horizontal and vertical vibrations (Apsel and Luco, 1987;Latini and Zania, 2017;Chen et al, 2007;Senjuntichai et al, 2006;Bilotta et al, 2015;Chen et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Settlement analysis of the giant open caisson during the construction of the Changtai Yangtze River Bridge

2023

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With the increasing size of open caissons in large-span bridge projects, the overall settlement of giant open caissons is vital to the safe construction of bridge superstructures. Taking the engineering case of the Changtai Yangtze River Bridge, the overall deformation of an open caisson was studied during the construction stage of the bridge’s superstructures. First, the theoretical layer-wise summation method was utilized to analyze the settlement of the open caisson. Then, a 3-D finite element model was established to simulate the installation stage of the bridge superstructure. Finally, a large centrifuge model test was performed to obtain the deformation of the open caisson at each step of bridge’s construction. The results of these approaches demonstrated that final settlements were quite consistent—approximately 225 mm when the bridge superstructure was completely installed—and the settlement deformation curve could be divided into three stages: slowly increasing, rapid, and stabilizing. This study can provide significant guidance for the construction of the Changtai Yangtze River Bridge and be a reference for similar open caisson engineering projects.

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Vertical bearing capacity of bucket foundations in sand

Cited by 39 publications

References 27 publications

Research on the application of Pile-bucket composite structure in the Silt Coast

Research on the application of Pile-bucket composite structure in the Silt Coast

Foundations of offshore wind turbines: A review

Settlement analysis of the giant open caisson during the construction of the Changtai Yangtze River Bridge

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