The offshore nuclear power platform is a remote island power supply with great prospects for development. This paper addresses the hydrodynamic performance of a new deep-draft cylindrical offshore platform for carryin...The offshore nuclear power platform is a remote island power supply with great prospects for development. This paper addresses the hydrodynamic performance of a new deep-draft cylindrical offshore platform for carrying nuclear reactors. The platform solves the problems of motion resonance and space waste of arranging the nuclear reactor directly on the traditional cylindrical platform and SPAR platform. The novelty of the platform is highlighted through statistical generalization based on dimensionless master scale parameters. A test model and scheme suitable for deep-draft cylindrical offshore platform are established. Through the model test, the platform natural properties and the motion response under different sea conditions are obtained. Spectral analysis is applied to study the platform motion and mooring tension response characteristics. The results show that the natural motion periods of the platform are obviously larger than the main wave period range of the operating sea area, and the resonance risk is low. Under the sea state of 1-in-100-years, the maximum displacement of the platform is 14.088 m, and the maximum dynamic inclination is 10.223°. The motion performance meets the design requirements. It is worth noting that the pitch plays a significant effect in influencing the heave, yaw, and mooring line tension response. This effect is greater as the sea state roughness increases. Improving the pitch of the platform deserves in-depth study. In addition, the results of this study address the gap in experimental data, providing a reference for numerical modeling and further research.展开更多
At present, the bridge pier column construction needs to set up the operation platform, in the traditional technology often uses a large number of steel pipe, fastener materials and other materials to set up the opera...At present, the bridge pier column construction needs to set up the operation platform, in the traditional technology often uses a large number of steel pipe, fastener materials and other materials to set up the operation platform. In this paper, when the pier column is constructed, the cylindrical pier formwork is used to hang the operating platform, the cylindrical die has strong vertical bearing capacity after the two half die is closed and the whole die is synthesized, and the high strength bolt is used to prevent the bolt from breaking and blasting. The technology has high speed, high construction efficiency, stable safety performance and can be used many times. This paper mainly introduces the technology principle, construction process and quality control points of the external operation platform for bridge pier column construction.展开更多
基金sponsored by the Ling Chuang Research Project of China National Nuclear Corporation(project number:19GFC-JJ12-669)the Oceanic Interdisciplinary Program of Shanghai Jiao Tong University(project number:SL2020ZD101)the Fundamental Research Funds for the Central Universities。
文摘The offshore nuclear power platform is a remote island power supply with great prospects for development. This paper addresses the hydrodynamic performance of a new deep-draft cylindrical offshore platform for carrying nuclear reactors. The platform solves the problems of motion resonance and space waste of arranging the nuclear reactor directly on the traditional cylindrical platform and SPAR platform. The novelty of the platform is highlighted through statistical generalization based on dimensionless master scale parameters. A test model and scheme suitable for deep-draft cylindrical offshore platform are established. Through the model test, the platform natural properties and the motion response under different sea conditions are obtained. Spectral analysis is applied to study the platform motion and mooring tension response characteristics. The results show that the natural motion periods of the platform are obviously larger than the main wave period range of the operating sea area, and the resonance risk is low. Under the sea state of 1-in-100-years, the maximum displacement of the platform is 14.088 m, and the maximum dynamic inclination is 10.223°. The motion performance meets the design requirements. It is worth noting that the pitch plays a significant effect in influencing the heave, yaw, and mooring line tension response. This effect is greater as the sea state roughness increases. Improving the pitch of the platform deserves in-depth study. In addition, the results of this study address the gap in experimental data, providing a reference for numerical modeling and further research.
文摘At present, the bridge pier column construction needs to set up the operation platform, in the traditional technology often uses a large number of steel pipe, fastener materials and other materials to set up the operation platform. In this paper, when the pier column is constructed, the cylindrical pier formwork is used to hang the operating platform, the cylindrical die has strong vertical bearing capacity after the two half die is closed and the whole die is synthesized, and the high strength bolt is used to prevent the bolt from breaking and blasting. The technology has high speed, high construction efficiency, stable safety performance and can be used many times. This paper mainly introduces the technology principle, construction process and quality control points of the external operation platform for bridge pier column construction.
