现役风力发电塔架结构健康评估的基础研究

项目名称： 现役风力发电塔架结构健康评估的基础研究

项目编号： No.51208382

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 建筑环境与结构工程学科

项目作者： 戴靠山

作者单位： 同济大学

项目金额： 25万元

中文摘要： 世界许多国家都在致力发展新能源技术，我国现有风电装机总量世界第一。年轻的风电工业开始暴露出工程安全问题，而作为主要支撑结构的风电塔架，其准确的结构健康状况评估和有效的防灾措施是涵待研究的课题。本项目旨在此范畴内进行前期基础性探索工作，研究内容包括：现役风电塔架结构特点及其在现实环境下振动机理、基于目标的风塔数值建模及模型确认技术、塔架结构健康评价方法。项目将借助激光遥感、无线传感器等新型试验手段，开展大量现场实测工作；结合实测分析、理论研究、数值模拟、模型试验，深入讨论风电塔低阻尼、振动耦合、土-结构相互作用等复杂物理现象，揭示风力发电塔架结构的破坏特征，研究风电塔架结构损伤识别方法。通过本课题，为深入开展旨在发展智能风电塔体系的健康监测系统及其控制技术的研究作积累。

中文关键词： 风电塔；动力实测；激光遥感与无线传感器；减振控制；抗震评估

英文摘要： Many countries endeavor to develop renewable energy technologies. To use wind energy, China constructed many onshore wind farms and its total wind turbine capacity is the largest in the world. Engineering problems gradually emerge from wind energy industry, including those related to the structural reliability of turbine towers. It calls for robust structural health monitoring methods and effective vibration control strategies in order to improve structural resilience of wind turbine towers. This proposed research is expected to initiate a series of studies within this scope. The proposed work in this study includes: (1) Structural behaviors of in-service wind turbine towers and tower vibration mechanism under both environmental and operational loads, (2) Wind turbine tower numerical modeling techniques and model verification methods, and (3) Structural health assessment of wind turbine towers based on novel inspection and/or monitoring techniques. Theoretical analysis, numerical simulation, field testing, and lab tests will be combinedly used in this study. The proposed research will develop both numerical and scale-down physical wind tower models based on an in-depth examination of dynamic coupling issues between blades and a tower as well as complex damping characteristics of the wind turbine tower. With thes

英文关键词： wind turbine tower；field vibration testing；laser-based sensing and wireless sensor；seismic assessment；vibration control