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Improved ground stiffness measurements for offshore wind turbine

改进海上风力涡轮机的地面刚度测量

基本信息

批准号：
2605960
负责人：
金额：
--
依托单位：
University of Glasgow
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2605960
关键词：
Improved ground stiffness measurements offshore

项目摘要

The UK is the world leader in offshore wind energy and has set a new ambitious target of 40GW of wind power by 2030, producing enough offshore wind capacity to power every home. Offshore wind turbine (OWT) foundations make up a significant portion of the capital cost of a project and optimisation of their design is paramount. Recent research has led to significant advances through theoretical developments combined with high-quality field-testing. There remains significant uncertainty in the measurement and interpretation of key soil and rock deformation parameters that underpin design approaches. Improving offshore site characterisation will contribute to economising foundation geometries, lowering OWF capital costs and meeting the UK's renewable energy targets.A new programme of research in the School of Engineering aims to quantify and reduce the uncertainty associated with soil/rock in situ stiffness measurements and minimise the impact on the predictive capability of OWT foundation design methods. This will be achieved through rigorous measurement and interpretation in the field and the laboratory. This PhD project will use advanced laboratory testing combined with analysis of large industry offshore site investigation datasets to investigate intra- and inter- method variability between laboratory methods to determine both small strain stiffness and stiffness degradation and improve correlation with in situ measurements. The successful student will be involved in the commissioning and use of a new resonant column device within the geotechnical laboratory, funded by Vattenfall Wind Power. There may also be an opportunity for the PhD student to undertake fieldwork within the UK. The research outcomes will be applied to design with an opportunity to reanalyse designed monopile foundations and determine the effect of the results on design life.

英国是海上风能的世界领导者，并制定了到2030年风力发电量达到40 GW的新的雄心勃勃的目标，生产足够的海上风力发电能力为每个家庭供电。海上风力涡轮机（OWT）基础占项目资本成本的很大一部分，其设计的优化至关重要。最近的研究通过理论发展与高质量的现场测试相结合，取得了重大进展。作为设计方法基础的关键土壤和岩石变形参数的测量和解释仍然存在很大的不确定性。改善海上场地特性将有助于节省基础几何形状，降低OWF资本成本，并满足英国的可再生能源目标。工程学院的一项新研究计划旨在量化和减少与土壤/岩石原位刚度测量相关的不确定性，并最大限度地减少对OWT基础设计方法预测能力的影响。这将通过实地和实验室的严格测量和解释来实现。该博士项目将使用先进的实验室测试，结合大型工业海上现场调查数据集的分析，调查实验室方法之间的方法内和方法间变异性，以确定小应变刚度和刚度退化，并提高与现场测量的相关性。成功的学生将参与一个新的共振柱装置的调试和使用的岩土实验室内，由Vattenfall风力发电资助。博士生也可能有机会在英国进行实地考察。研究成果将应用于设计，有机会重新分析设计的可压缩基础，并确定结果对设计寿命的影响。