海上风电吸力基础在分层土中的沉贯特性研究综述  

Review of installation behavior of suction caisson in layered soil

作　　者：李大勇 黄凌昰 张雨坤[3] 吴学震 LI Dayong;HUANG Lingxia;ZHANG Yukun;WU Xuezhen(School of Civil Engineering of Fuzhou University,Fuzhou 350108,China;College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao 266580,China;Key Laboratory of Civil Engineering Disaster Prevention and Mitigation,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]福州大学土木工程学院,福建福州350108 [2]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [3]山东科技大学山东省防灾减灾重点实验室,山东青岛266590

出　　处：《海洋工程》2023年第1期110-127,共18页The Ocean Engineering

基　　金：国家自然科学基金资助项目(51879044)。

摘　　要：吸力基础与海洋工程大直径钢桩相比,具有成本低、安装周期短、对环境影响小、不受海况影响及可回收再利用等优点,近年来在海上风电工程中得到推广应用。吸力基础沉贯至海床预定位置,是其发挥承载力和确保服役稳定性的前提。海床地基土体常以分层土形式分布,且各层土体强度、压缩性和渗透性等存在显著差别,导致吸力基础吸力沉贯机理非常复杂。明确吸力基础在分层土中沉贯特性,有助于指导吸力基础在海上风电工程中的推广应用。对目前吸力基础在分层土中沉贯特性研究进行综述和总结,归纳了其沉贯机理研究进展,并对影响吸力基础在分层土中沉贯因素进行了分析;提出了分层土中吸力基础沉贯的研究方向和改进的沉贯方法。A suction caisson has been increasingly applied as foundation supporting offshore wind turbines.Compared to lager offshore monopiles,suction caissons have many advantages such as low cost,fast installation,easy removal and reuse,little environmental impact.Seabed is composed of layered soil,which causes the installation of suction caisson many uncertainties.The theoretical and experimental research of suction caisson installation has been focused on the homogeneous soil,and the research on the installation in complex layered soil needs to been strengthened because the practice in such situation will be always encountered.This paper first analyzes and summarizes the basic principle of penetration of suction foundation in homogeneous soil.Next,this study illustrates the theoretical,experimental and numerical results of the penetration mechanisms of suction caisson in layered soil,and some factors affecting the suction caisson penetration characteristics and behavior are analyzed.Finally,some suggestions of studying installation of the suction caisson in layered soil are proposed.

关 键 词：吸力基础 分层土 吸力沉贯 沉贯机理 海上风电 

分 类 号：P754[天文地球—海洋科学]