Seismic response of monopiles in liquefiable soils

海上风电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）。随着欧洲OW市场的成熟，欧洲OW开发商正在利用他们的技术专长在东亚等地震活跃地带开发OW农场。这种扩展的挑战是需要设计坚固的地基，以承受更大的地震载荷，并在可液化的土壤中保持稳定。迄今为止，单桩是迄今为止最受欢迎的基础选择，因为它们的施工和安装相对简单。这些单桩结合地震引起的循环荷载和可能的液化引起的地面变形来支撑巨大的OW涡轮机。目前尚无大直径单桩循环荷载评估的指导方针和方法。通过投资于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地震诱发循环荷载下海上风基础设计指南来解决这一研究缺口。这项工作将包括实验测试和数值模拟。

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.