Seismic response of monopiles in liquefiable soils

液化土中单桩的地震响应

• 批准号: 2481978
• 金额: --
• 依托单位: University of Cambridge
• 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-2481978
• 关键词: Seismic; response; monopiles; liquefiable; soils

Offshore wind (OW) plays an important role in the transition to low carbon energy supply. The UK is aiming to provide a third of all electricity using OW energy by 2030 (30 GW by 2030). Whilst the European OW market is becoming mature, European OW developers are now using their technical expertise to develop OW farms in seismically active zones such as East Asia. The challenge in this expansion is the need to design robust foundations to withstand larger earthquake loads and remain stable in liquefiable soils. To date, monopiles are by far the most popular foundation option due to their relatively simple construction and installation. These monopiles support the massive OW turbines on combination with the earthquake-induced cyclic loads and possibly liquefaction-induced ground deformations. The current guidelines and methods for assessing cyclic loading of large diameter monopiles are lacking. There is great potential to lower OW foundation costs by investing in robust cyclic assessment methodologies.The project will aim to address this research gap by proposing guidelines for the design of Offshore wind foundations subjected to earthquake-induced cyclic loading. The work will involve experimental testing and numerical modelling.

海上风电（OW）在向低碳能源供应转型中发挥着重要作用。英国的目标是到2030年使用OW能源提供三分之一的电力（到2030年达到30吉瓦）。虽然欧洲OW市场正在变得成熟，但欧洲OW开发商现在正在利用他们的技术专长在东亚等地震活跃区开发OW农场。扩建的挑战是需要设计坚固的基础，以承受更大的地震荷载，并在可液化土壤中保持稳定。迄今为止，由于其相对简单的施工和安装，桩是迄今为止最受欢迎的基础选择。这些支柱支撑着巨大的OW涡轮机，并与地震引起的循环荷载和可能由地震引起的地面变形相结合。目前缺乏评估大直径圆柱循环荷载的准则和方法。通过投资稳健的循环评估方法，降低OW基础成本的潜力很大。该项目旨在通过提出承受地震引起的循环荷载的海上风电基础设计指南来解决这一研究空白。这项工作将涉及实验测试和数值建模。