不同海水压力下海上风电基础用灌浆料的基本力学性能

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (11): 4055-4060.

不同海水压力下海上风电基础用灌浆料的基本力学性能

蒋光遒¹, 李智², 周兴政¹, 张阔纪³, 吴兆旗³

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

收稿日期:2024-06-06 修订日期:2024-07-26 出版日期:2024-11-15 发布日期:2024-11-21
通信作者: 吴兆旗,博士,研究员。E-mail:zhaoqi_wu@fzu.edu.cn
作者简介:蒋光遒(1972—),男,高级工程师。主要从事海上风电建设与运行管理方面的研究。E-mail:jiang_guangqiu@ctg.com.cn
基金资助:
中国三峡新能源(集团)股份有限公司科研项目(ZPHX0113)

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

JIANG Guangqiu¹, LI Zhi², ZHOU Xingzheng¹, ZHANG Kuoji³, WU Zhaoqi³

1. China Three Gorges Corporation Fujian Energy Investment Co., Ltd., Fuzhou 350000, China;
2. China Three Gorges Corporation, Wuhan 430000, China;
3. College of Civil Engineering, Fuzhou University, Fuzhou 350108, China

Received:2024-06-06 Revised:2024-07-26 Published:2024-11-15 Online:2024-11-21

摘要/Abstract

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。

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

Abstract: 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.

Key words: grouting material, offshore wind power, seawater pressure, mechanical property, phase composition, microstructure

中图分类号:

TU528

蒋光遒, 李智, 周兴政, 张阔纪, 吴兆旗. 不同海水压力下海上风电基础用灌浆料的基本力学性能[J]. 硅酸盐通报, 2024, 43(11): 4055-4060.

JIANG Guangqiu, LI Zhi, ZHOU Xingzheng, ZHANG Kuoji, WU Zhaoqi. Basic Mechanical Properties of Grouting Material for Offshore Wind Power Foundation under Different Seawater Pressures[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(11): 4055-4060.

参考文献

[1] 田伟丽, 汪冬冬, 高健岳. 海上风电项目中导管架基础施工技术综述[J]. 中国港湾建设, 2020, 40(5): 20-24.
TIAN W L, WANG D D, GAO J Y. Summary of jacket foundation construction technology in offshore wind power project[J]. China Harbour Engineering, 2020, 40(5): 20-24 (in Chinese).
[2] WILKE F. Load bearing behaviour of grouted joints subjected to predominant bending[D]. Hannover: Leibniz University Hannover, 2014.
[3] 丁成. 超高性能海上风电灌浆料试验研究[D]. 广州: 华南理工大学, 2021.
DING C. Experimental study on ultra-high performance offshore wind power grouting material[D]. Guangzhou: South China University of Technology, 2021 (in Chinese).
[4] 马奎鑫. 低周循环荷载作用下海上风机灌浆连段力学性能研究[D]. 东营: 中国石油大学(华东), 2020.
MA K X. Study on mechanical properties of grouting section of offshore fan under low cycle load[D]. Dongying: China University of Petroleum (Huadong), 2020 (in Chinese).
[5] 王根梁. 海上风电大直径高强灌浆连接轴向力学性能研究[D]. 福州: 福州大学, 2020.
WANG G L. Study on axial mechanical properties of large diameter and high strength grouting connection for offshore wind power[D]. Fuzhou: Fuzhou University, 2020 (in Chinese).
[6] 陈涛, 张持海, 赵淇, 等. 海上风机基础灌浆连接段抗震性能试验[J]. 船舶与海洋工程, 2018, 34(5): 1-8.
CHEN T, ZHANG C H, ZHAO Q, et al. Experimental study on the seismic behavior of grouted connection of offshore wind turbine foundations[J]. Naval Architecture and Ocean Engineering, 2018, 34(5): 1-8 (in Chinese).
[7] 陈涛, 张持海, 赵淇, 等. 海上风机基础灌浆连接段压弯性能有限元分析[J]. 结构工程师, 2019, 35(2): 93-100.
CHEN T, ZHANG C H, ZHAO Q, et al. Numerical analysis of grouted connection for offshore wind turbine substructures[J]. Structural Engineers, 2019, 35(2): 93-100 (in Chinese).
[8] 宋普涛, 王晶, 冷发光, 等. 塑性膨胀剂对海上风电超高性能灌浆料性能的影响[J]. 硅酸盐通报, 2023, 42(5): 1608-1614.
SONG P T, WANG J, LENG F G, et al. Effect of plastic expansive agent on properties of ultra-high performance grouting material for offshore wind power[J]. Bulletin of the Chinese Ceramic Society, 2023, 42(5): 1608-1614 (in Chinese).
[9] 王乾峰, 刘云贺, 彭刚. 水压力环境中混凝土的含水量及其对力学性能的影响[J]. 水利学报, 2017, 48(2): 193-202.
WANG Q F, LIU Y H, PENG G. Water content in concrete under water pressure environment and the effect on its mechanical properties[J]. Journal of Hydraulic Engineering, 2017, 48(2): 193-202 (in Chinese).
[10] 王海龙, 李庆斌. 饱和混凝土的弹性模量预测[J]. 清华大学学报(自然科学版), 2005, 45(6): 761-763+775.
WANG H L, LI Q B. Saturated concrete elastic modulus prediction[J]. Journal of Tsinghua University (Science and Technology), 2005, 45(6): 761-763+775 (in Chinese).
[11] 陈宇良, 吉云鹏, 陈宗平, 等. 钢纤维再生混凝土三轴受压力学性能试验[J]. 复合材料学报, 2022, 39(8): 4005-4016.
CHEN Y L, JI Y P, CHEN Z P, et al. Experiment on mechanical properties of steel fiber recycled aggregate concrete under triaxial compression[J]. Acta Materiae Compositae Sinica, 2022, 39(8): 4005-4016 (in Chinese).
[12] 王开强, 孙庆, 董耀武, 等. 压力养护钢管混凝土的力学性能和微观结构[J]. 建筑材料学报, 2023, 26(10): 1096-1103.
WANG K Q, SUN Q, DONG Y W, et al. Mechanical properties and microstructure of concrete filled steel tube hardening under pressure curing[J]. Journal of Building Materials, 2023, 26(10): 1096-1103 (in Chinese).
[13] 王海龙, 李庆斌. 孔隙水对湿态混凝土抗压强度的影响[J]. 工程力学, 2006, 23(10): 141-144+179.
WANG H L, LI Q B. Effect of pore water on the compressive strength of wet concrete[J]. Engineering Mechanics, 2006, 23(10): 141-144+179 (in Chinese).
[14] 李宗利, 杜守来. 高渗透孔隙水压对混凝土力学性能的影响试验研究[J]. 工程力学, 2011, 28(11): 72-77.
LI Z L, DU S L. Experimental study on mechanical properties of concrete due to high seepage pore water pressure[J]. Engineering Mechanics, 2011, 28(11): 72-77 (in Chinese).[15] 李庆斌, 陈樟福生, 孙满义, 等. 真实水荷载对混凝土强度影响的试验研究[J]. 水利学报, 2007, 38(7): 786-791.
LI Q B, CHEN Z F S, SUN M Y, et al. Effect of water loading on strength of concrete[J]. Journal of Hydraulic Engineering, 2007, 38(7): 786-791 (in Chinese).
[16] TAM C M, TAM V W Y, NG K M. Assessing drying shrinkage and water permeability of reactive powder concrete produced in Hong Kong[J]. Construction and Building Materials, 2012, 26: 79-89.
[17] IPEK M, YILMAZ K, SÜMER M, et al. Effect of pre-setting pressure applied to mechanical behaviours of reactive powder concrete during setting phase[J]. Construction and Building Materials, 2011, 25(1): 61-68.
[18] YAZICI H, YIĞITER H, KARABULUT A Ş, et al. Utilization of fly ash and ground granulated blast furnace slag as an alternative silica source in reactive powder concrete[J]. Fuel, 2008, 87(12): 2401-2407.
[19] OSHITA H, TANABE T A. Water migration phenomenon in concrete in postpeak region[J]. Journal of Engineering Mechanics, 2000, 126(6): 573-581.
[20] 赖建中, 孙伟. 生态型RPC材料的力学性能及微观机理研究[J]. 新型建筑材料, 2009, 36(12): 20-23.
LAI J Z, SUN W. Study on mechanical properties and micro-mechanism of ecological reactive powder concrete[J]. New Building Materials, 2009, 36(12): 20-23 (in Chinese).
[21] ZHANG D, JIANG J W, ZHANG Z W, et al. Comparative analysis of sulfate resistance between seawater sea sand concrete and freshwater desalted sea sand concrete under different exposure environments[J]. Construction and Building Materials, 2024, 416: 135146.