不同海水压力下海上风电基础用灌浆料的基本力学性能  

Basic Mechanical Properties of Grouting Material for Offshore Wind Power Foundation under Different Seawater Pressures

作　　者：蒋光遒 李智 周兴政 张阔纪 吴兆旗[3] JIANG Guangqiu;LI Zhi;ZHOU Xingzheng;ZHANG Kuoji;WU Zhaoqi(China Three Gorges Corporation Fujian Energy Investment Co.,Ltd.,Fuzhou 350000,China;China Three Gorges Corporation,Wuhan 430000,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]长江三峡集团福建能源投资有限公司,福州350000 [2]中国长江三峡集团有限公司,武汉430000 [3]福州大学土木工程学院,福州350108

出　　处：《硅酸盐通报》2024年第11期4055-4060,4082,共7页Bulletin of the Chinese Ceramic Society

基　　金：中国三峡新能源(集团)股份有限公司科研项目(ZPHX0113)。

摘　　要：海上风电基础结构与钢管桩之间通常采用灌浆方式进行连接。随着海上风电向深远海发展,风电基础结构与钢管桩灌浆连接在水下的应用位置越来越深。为明确海水压力对灌浆料基本力学性能的影响,将灌浆料试件置于压力容器养护后,进行抗压强度、抗折强度、弹性模量等基本力学性能测试,并利用X射线衍射仪、扫描电子显微镜等分析了物相组成和微观结构。结果表明:经过压力环境养护后,灌浆料抗压强度提高;海水压力不但不会产生“楔入”作用,反而进一步提高了灌浆料的密实度;当海水压力从0 MPa增大到0.75 MPa时,灌浆料的抗压强度、抗折强度、弹性模量分别增大了10.7%、2.9%、16.7%;海水压力不会改变灌浆料的物相组成,但是会降低内部孔隙率,增大密实度,从而提高其力学性能。The connection between offshore wind power foundation structures and steel pipe piles is usually carried out by grouting.With the development of offshore wind power to deep sea,the grouting connection between wind power foundation and steel pipe piles is deeper and deeper in underwater position.To determine the influence of seawater pressure on the basic mechanical properties of grouting material,the grouting material specimens were placed in a pressure vessel for curing,and then their basic mechanical properties such as compressive strength,flexural strength,and elastic modulus were tested.In addition,the phase composition and microstructure were analyzed by X-ray diffractometer and scanning electron microscope.The results show that the compressive strength of grouting material is improved after curing under a pressure environment.Seawater pressure does not produce a“wedging”effect,but further improves the compactness of grouting material.When the seawater pressure increases from 0 MPa to 0.75 MPa,the compressive strength,flexural strength,and elastic modulus of grouting material increase by 10.7%,2.9%,and 16.7%,respectively.Seawater pressure does not change the phase composition of grouting material,but reduces its internal porosity and increases its compactness,thus improving its mechanical properties.

关 键 词：灌浆料 海上风电 海水压力 力学性能 物相组成 微观结构 

分 类 号：TU528[建筑科学—建筑技术科学]