Analysis Of Dynamic Response Of Offshore Pile Support Foundation Based On SSI

Along with large quantities of offshore construction projects, offshore structures in the marine environment, dynamic loads and seismic analysis of the role gradually attention engineering staff.Dynamic performance analysis and consideration of offshore wind power infrastructure covering silt soft soil site response analysis on offshore geotechnical engineering has become the focus of international concern?Complex offshore structure where site conditions, suffered more special load types, significantly different from the land structure, procedure-related specifications mature Write to study engineering and scientific personnel of the class structure is relatively small, so consider the site conditions and related dynamic analysis of environmental loads has certain academic significance and engineering value. Infrastructure is a key foundation of offshore wind power technology. Effect of high-rise building structure foundation for the building of a pivotal, both towering offshore wind turbine foundation infrastructure, marine structural engineering, power equipment, and complex soft soil foundation structure of four characteristic combination of various characteristics of increased offshore wind power base difficult to design, combined with relatively harsh marine environment, make infrastructure investments in wind power has become a major cost risk.In this paper, the actual site of the Jiangsu Province, a data offshore wind power project and a typical wind turbine tower pile supported structure parameters as the background.Using the method of finite element numerical calculation.Based on finite element software ADINA platform, a four-dimensional pile foundation pile supported structure under Static and Dynamic Analysis of the project site conditions unified model.Seismic response analysis and wind loads under static, dynamic analysis and structural systems under the weight of its own weight displacement field analysis, the main work is as follows:1. Consider the site conditions of four three-dimensional supporting structure of pile foundation system finite element model, model building process, considering soil-structural dynamic interaction.2. Four pile foundation supporting structure system under its own weight displacement field analysis of initial stress analysis.3.Four typical offshore piles supporting structure seismic response analysis, design ground motion study in intensity equivalent input ground motions, Architecture displacement, effective stress responses law.4.Four piles of offshore support structure system for the equivalent static wind loads and simplified dynamic analysis under wind loads harmonic analysis, examine the structure of the system in static dynamic response under wind loads.In this paper, the above work can provide analysis of the relevant structure analysis of ideas, provide a reference for the design of related structures, and to lay a foundation for the introduction of relevant norms.