响水海上风机群桩基础变形特性的有限元分析.pdfVIP

第 31 卷增刊 2 岩 土 力 学 Vol.31 Supp.2 2010 年 11 月 Rock and Soil Mechanics Nov. 2010 文章编号：1000－7598 (2010)增刊 2－0470－05 响水海上风机群桩基础变形特性的有限元分析 1 1 2 荣 冰 ，张 嘎 ，王富强 （1. 清华大学 水沙科学与水利水电工程国家重点试验室，北京 100084 ；2. 中国水电工程顾问集团公司，北京 100011 ） 摘 要：江苏省响水海上风电场位于响水县陈港附近海域。由于海上风机群桩基础复杂的工程特性，地基基础设计是该工程 的技术难题之一。考虑了静力工况和循环风荷载工况，对响水 2 MW 风力发电机组群桩基础的变形特性进行了计算和分析。 计算结果表明，静力荷载工况下基础变形在允许范围内，考虑循环风荷载时的变形较静力荷载工况的方案略有增大；桩土系 统随着深度水平位移和影响范围逐渐减小，竖向最大沉降量基本不变，影响范围有一定扩展；桩土系统的受力变形特性不仅 取决于所受到的荷载组合，也取决于地基条件。 关 键 词：响水海上风电场；8 桩基础；有限元；变形；循环风荷载 中图分类号：TM 614 ；TU 473.1 文献标识码：A Finite element analysis of deformation of pile groups for Xiangshui offshore wind power station RONG Bing1 1 2 , ZHANG Ga , WANG Fu-qiang (1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China; 2. China Hydropower Engineering Consulting Group Corporation, Beijing 100011, China) Abstract: Xiangshui offshore wind power station is located in shore water near Chengang of Jiangsu province. As the pile groups of the wind turbines have complicated engineering characteristics, their design is one of the technical difficulties of the project. Deformation behaviors of the piles foundation of Xiangshui 2MW wind turbine generator system are computed and analyzed under static loads and cyclic wind loads. The results show that deformations of the foundation are allowable; and the deformations due to static loads are comparatively smaller than that under the containing cyclic wind loads condition. With th