岩土工程学报2009，Vol.31Issue(11)：1729-1734,6.
用循环三轴试验分析海上风力发电机单桩基础侧向位移
Estimation of lateral deformation of monopile foundations by use of cyclic triaxial tests
郭玉樹 1亚克慕斯·马丁 2阿布达雷赫曼·哈里2
作者信息
- 1. 屏东科技大学土木工程系,台湾,屏东,91201
- 2. 德国汉诺威大学土壤力学,基础工程及水力发电中心,汉诺威,30167
- 折叠
摘要
Abstract
In order to develop renewable energy, the offshore wind energy technology has been a main research field in Europe. A foundation with sufficient stiffness to resist long-term wind and wave load to insure the serviceability of wind energy converter is needed. The monopile foundation, the steel pipe pile with a large diameter, is one of well adopted foundations in the existing and planned offshore wind parks. The usually used design method, p-y curves method, is unsuitable for estimating the deformation response of the large-diameter monopile under long-term cyclic lateral load. This paper aims to present a calculation method for estimating the lateral deformation response of a single pile in sandy soil under cyclic lateral load based on the cyclic triaxial test results. The degradation of secant soil stiffness due to the accumulation of plastic strain under cyclic loading is formulated. Through this degradation stiffness model, the accumulated deformation of a single pile can be quantified using a finite element model with three calculation steps. The proposed method is applicable for uniform or layered subsoil in a preliminary design.关键词
海上风力发电/大口径单桩/循环侧向力/循环三轴试验Key words
offshore wind energy/ monopile/ cyclic lateral load/ cyclic triaxial test分类
建筑与水利引用本文复制引用
郭玉樹,亚克慕斯·马丁,阿布达雷赫曼·哈里..用循环三轴试验分析海上风力发电机单桩基础侧向位移[J].岩土工程学报,2009,31(11):1729-1734,6.
