海上风电筒型结构基础层状地基参数优化反演  

Optimization Inversion of Multi-Layer Subsoil Parameters for Offshore Wind Turbine Structure Supported by Bucket Foundation

作　　者：赵悦[1,2] 练冲 练继建[1,2] 董霄峰[1,2] 王海军 Zhao Yue;Lian Chong;Lian Jijian;Dong Xiaofeng;Wang Haijun(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;School of Civil Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300350 [2]天津大学建筑工程学院,天津300350

出　　处：《天津大学学报（自然科学与工程技术版）》2019年第4期423-429,共7页Journal of Tianjin University：Science and Technology

基　　金：科技部重点领域创新团队计划资助项目(2014RA4031);高等学校学科创新引智计划资助项目(B14012);国家自然科学基金青年基金资助项目(51709202);天津市科技计划资助项目(16PTGCCX00160)~~

摘　　要：如何准确建立地基弹性模量与压缩模量的关系已经成为海上风电结构设计与校核过程中关键难题.针对响水海上风电复合筒型基础结构原型数据与地勘资料,提出一种基于MATLAB和ABAQUS的联合仿真方法(MATABA)对筒型基础复杂层状地基参数优化反演分析.首先,开发了以MATLAB粒子群算法为主程序调用ABAQUS进行循环地基参数优化反演的程序;然后,建立三维"风机-塔筒-复合筒型基础-地基"一体化有限元-无限元耦合模型;最后,基于MAT-ABA优化反演得到的参数,对比分析风荷载激励下筒型基础结构的动态响应模拟值与实测值.结果表明,复杂层状地基弹性模量与压缩模量转换系数不同,对比优化反演得到的参数下动力响应模拟值与实测值拟合良好,表明优化反演结果的准确性与可靠性.Accurate determination of the conversion relationship between elastic modulus and compressive modulus of subsoil has become a key problem in the design and verification of offshore wind turbine structures. A co-simulation method based on MATLAB and ABAQUS is proposed to optimize the inversion analysis of multi-layer subsoil parameters and determine the relationship between these two types of modulus , on the basis of the prototype observation data and geological data for composite bucket foundation of offshore wind turbine at Xiangshui wind farm. First , an algorithm based on particle swarm optimization so-called MAT-ABA ( combined programs of MATLAB and ABAQUS ) is developed to realize the loop inversion optimization of subsoil parameters. Then , a three-dimensional integrated coupling model comprising turbine , tower , composite bucket foundation , and soil is constructed based on finite element and infinite element theories. Lastly , the simulation and observation results of the bucket foundation structure induced by wind excitation are compared based on the subsoil parameters obtained from optimization inversion. The result shows that the conversion coefficients between elastic modulus and compressive modulus of the multi-layer subsoil parameters are different. Furthermore , the simulated dynamic response has a good fitting trend with the measured values in dynamic response , which verifies the accuracy and reliability of the optimization inversion results.

关 键 词：海上风电 筒型基础 地基参数 优化反演 联合仿真 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程]