水力发电2025，Vol.51Issue(10)：95-99,127,6.
基于刚度矩阵的混凝土承台基础-塔架简化计算方法
A Simplified Calculation Method for Concrete Pile Cap Foundation-Tower Based on Stiffness Matrix
詹懿德 1黄国香 1乔厚 1祝周杰 1郭耀华2
作者信息
- 1. 中国电建集团华东勘测设计研究院有限公司,浙江 杭州 311122
- 2. 天津大学建筑工程学院,天津 300350
- 折叠
摘要
Abstract
For concrete pile cape,a common foundation type for offshore wind turbines in China,traditional separate modeling methods create finite element models for the turbine unit,tower and pile cap,respectively,and couple them through boundary conditions.However,this approach may lead to load transfer errors,affecting calculation accuracy and increasing computational complexity.This paper proposes a simplified calculation method for the concrete pile cap foundation-tower system based on the stiffness matrix,which establishes an integrated finite element model for wind turbine unit,supporting structure and ground foundation,and introduces the stiffness matrix to replace the ground foundation response.This approach enables accurate representation and simplified simulation of the overall structural dynamic characteristics.Taking an offshore wind power project as case study,the modal analysis and structural force verification are conducted.The results show that the first-order natural frequency calculated with the modified stiffness matrix has only a 0.33％error compared to the full model,and in terms of stress distribution in concrete and steel structures,the simplified model and the full model yield results that are nearly identical,with a maximum error of 23.8％.关键词
海上风电/混凝土承台基础/一体化模型/刚度矩阵/简化模型Key words
offshore wind power/concrete pile cap foundation/integrated computation model/stiffness matrix/simplified calculation model分类
建筑与水利引用本文复制引用
詹懿德,黄国香,乔厚,祝周杰,郭耀华..基于刚度矩阵的混凝土承台基础-塔架简化计算方法[J].水力发电,2025,51(10):95-99,127,6.
