ABSTRACT
A suction bucket foundation is a new type offering high construction efficiency, precise positioning, cost-effectiveness, and environmental friendliness. It has been extensively employed in marine resource development, particularly in offshore wind power and oil and gas extraction. It usually involves multiple suction bucket conduit rack platforms during offshore construction projects. Accurately predicting the sinking penetration resistance and determining the suction value is crucial during the construction of the suction bucket foundation, as it ensures the safe sinking of the platform foundation to the designated depth. This paper examines the feasibility of the suction bucket foundation's sinking, sinking penetration resistance, suction value, and self-weight penetration depth, using the offshore wind farm guiding frame platform foundation project in Yangjiang, Guangdong Province, as a basis of analysis. The measured data is analyzed using the API specification static equilibrium analysis method, ABAQUS finite element analysis, and data mining techniques. The suction drum base platform's sinking process was monitored for negative pressure and penetration resistance. These observed values were compared to theoretical and finite element calculations. Results demonstrated that the API specification's theoretical calculations and finite element analyses effectively predict sinking penetration resistance, the suction force value, and the penetration depth for self-gravitational penetration. On-site engineering data fit these theoretical calculations, and finite element analyses well. The findings from this study have enriched the engineering application database of the suction drum foundation, providing a valuable reference for the design and construction of similar projects and establishing the groundwork for further promotion and application.
Subject(s)
Suction , Finite Element AnalysisABSTRACT
In the title compound, C(11)H(8)Cl(2)N(2)O(2)·H(2)O, the dihedral angle between the benzene and isoxazole rings is 59.10â (7)°. In the crystal, the components are linked by N-Hâ¯O and O-Hâ¯O hydrogen bonds into a three-dimensional network. The crystal structure is further stabilized by π-π stacking inter-actions [centroid-centroid distance = 3.804â (2)â Å].
ABSTRACT
In the title compound, C(15)H(10)ClNO(2),the dihedral angle between the mean planes of the benzene and 6-chloro-indoline-2,3-dione ring systems, linked through a methyl-ene group, is 81.68â (10)°. In the crystal, mol-ecules are connected by C-Hâ¯O hydrogen bonds, generating C(6) chains propagating in [010].
ABSTRACT
In the title compound, C(6)H(10)ClNO, an inter-mediate for the production of lysine, there are intra-molecular C-Hâ¯Cl hydrogen bonds.
ABSTRACT
In the crystal structure of the title compound, C(13)H(14)ClNO(2), inter-molecular C-Hâ¯O inter-actions link the mol-ecules into a two-dimensional network.
ABSTRACT
The asymmetric unit of the title compound, C(11)H(11)BrN(2)O(4), contains two crystallographically independent mol-ecules in which the bromo-phenyl rings are oriented at dihedral angles of 39.28â (3)°. The dioxolane rings adopt envelope conformations. Intra-molecular N-Hâ¯O hydrogen bonds result in the formation of four five-membered rings, having planar and envelope conformations. In the crystal structure, inter-molecular N-Hâ¯O hydrogen bonds link mol-ecules into chains along the b axis, forming R(2) (2)(8) ring motifs.
ABSTRACT
The title compound, C(11)H(11)ClN(2)O(4), is an important inter-mediate for the preparation of platinum anti-cancer drugs. The dioxolane ring adopts a twist conformation with an equatorially attached chloro-phenyl substituent. In the crystal structure, mol-ecules are linked into a two-dimensional network parallel to (001) by N-Hâ¯O and C-Hâ¯O hydrogen bonds.
