复合筒型基础负压沉放调平允许压差研究

贾沼霖; 李新义; 练继建; 张凤武; 吴寒; 贺帅奇

doi:10.19912/j.0254-0096.tynxb.2022-0762

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (9) : 384-389. DOI: 10.19912/j.0254-0096.tynxb.2022-0762

复合筒型基础负压沉放调平允许压差研究

贾沼霖^1~3, 李新义^1,2, 练继建³, 张凤武⁴, 吴寒^1,2, 贺帅奇^1,2

作者信息 +

STUDY ON ALLOWABLE DIFFERENTIAL AIR PRESSURE OF LEVELING FOR SUCTION INSTALLATION OF COMPOSITE BUCKET FOUNDATION

Jia Zhaolin^1-3, Li Xinyi^1,2, Lian Jijian³, Zhang Fengwu⁴, Wu Han^1,2, He Shuaiqi^1,2

Author information +

文章历史 +

摘要

针对复合筒型基础负压沉放调平工况中分舱间允许压差的研究较少,以某海上风电项目中复合筒型基础沉放安装为背景,采用极限应力控制方法开展复合筒型基础不同沉放深度处的调平允许压差Δp的定量分析,通过数值模拟方法计算有无土体模型的分舱板屈服的临界压差,提出复合筒型基础调平过程允许压差的选择方法。结果表明：复合筒型基础沉放过程中调平允许压差应采用分舱板极限应力与屈曲的最小值,分舱板设置加强肋可有效提高调平允许压差Δp,推荐使用带土体模型应力控制方法计算调平允许压差。

Abstract

There are few studies on the allowable differential air pressure between compartments in suction installation and leveling conditions of composite bucket foundation. Taking the installation of composite bucket foundation in an offshore wind power project as the background, the quantitative analysis of allowable differential air pressure of leveling Δp for composite bucket foundation at different installation depths is carried out by using ultimate stress control method, the critical differential air pressure of the bulkheads yield of the model with and without soil modeling is calculated by numerical simulation method, and the selection method of allowable differential air pressure during leveling of composite bucket foundation is proposed. The results show that the minimum value of ultimate stress and buckling of the bulkheads should be selected for the allowable differential air pressure of leveling during the suction installation, the reinforcing ribs of the bulkheads can effectively improve the allowable differential air pressure of leveling Δp, it is recommended to use the model with soil modeling to calculate the allowable differential air pressure of leveling.

导出引用

贾沼霖, 李新义, 练继建, 张凤武, 吴寒, 贺帅奇. 复合筒型基础负压沉放调平允许压差研究[J]. 太阳能学报. 2023, 44(9): 384-389 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0762

Jia Zhaolin, Li Xinyi, Lian Jijian, Zhang Fengwu, Wu Han, He Shuaiqi. STUDY ON ALLOWABLE DIFFERENTIAL AIR PRESSURE OF LEVELING FOR SUCTION INSTALLATION OF COMPOSITE BUCKET FOUNDATION[J]. Acta Energiae Solaris Sinica. 2023, 44(9): 384-389 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0762

中图分类号： TU43

参考文献

[1] LIU Y G, GUO Y H, DING H Y, et al.Failure envelopes of wide-shallow composite bucket foundation for offshore wind turbines in silty sand[J]. Transactions of Tianjin University, 2018, 24(2): 182-190.
[2] 练继建, 贺蔚, 吴慕丹, 等. 带分舱板海上风电筒型基础承载特性试验研究[J]. 岩土力学, 2016, 37(10): 2746-2752.
LIAN J J, HE W, WU M D, et al.Experimental study of bearing characteristic of bucket foundation of offshore wind turbine with bulkheads[J]. Rock and soil mechanics, 2016, 37(10): 2746-2752.
[3] LIU R, CHEN G S, LIAN J J, et al.Vertical bearing behaviour of the composite bucket shallow foundation of offshore wind turbines[J]. Journal of renewable and sustainable energy, 2015, 7(1): 1-21.
[4] GUO Y H, WANG H J, LIAN J J.Review of integrated installation technologies for offshore wind turbines: current progress and future development trends[J]. Energy conversion and management, 2022, 255: 115319.
[5] ZHANG P Y, HAN Y Q, DING H Y, et al.Field experiments on wet tows of an integrated transportation and installation vessel with two bucket foundations for offshore wind turbines[J]. Ocean engineering, 2015, 108: 769-777.
[6] 祁越, 刘润, 练继建. 无黏性土中筒型基础负压下沉模型试验[J]. 岩土力学, 2018, 39(1): 139-150.
QI Y, LIU R, LIAN J J.Model test of bucket foundation suction installation in cohesionless soil[J]. Rock and soil mechanics, 2018, 39(1): 139-150.
[7] ZHANG P Y, GUO Y H, LIU Y G, et al.Model tests on sinking technique of composite bucket foundations for offshore wind turbines in silty clay[J]. Journal of renewable and sustainable energy, 2015, 7(3): 033113.
[8] ZHANG P Y, GUO Y H, LIU Y G, et al.Experimental study on installation of hybrid bucket foundations for offshore wind turbines in silty clay[J]. Ocean engineering, 2016, 114: 87-100.
[9] ZHANG P Y, ZHANG Z, LIU Y G, et al.Experimental study on installation of composite bucket foundations for offshore wind turbines in silty sand[J]. Journal of offshore mechanics and arctic engineering, 2016, 138(6): 061901.
[10] ZHANG P Y, JIA N, LE C H, et al.Penetrating-levelling tests on bucket foundation with inner compartments for offshore wind turbines in sand[J]. Marine structures, 2022, 82: 103143.
[11] ZHANG P Y, JIANG Q M, ZHANG C, et al.Model tests on leveling process of four bucket foundation for offshore wind turbines[J]. Marine georesources & geotechnology, 2022, 41(5): 1-12.
[12] 丁红岩, 贾楠, 张浦阳, 等. 海上风电复合筒型基础粉质黏土下沉试验分析[J]. 天津大学学报(自然科学与工程技术版), 2017, 50(9): 893-899.
DING H Y, JIA N, ZHANG P Y, et al.Analysis of penetration test of composite bucket foundations for offshore wind turbines in silty clay[J]. Journal of Tianjin University(science and technology), 2017, 50(9): 893-899.
[13] DING H Y, PENG Y J, ZHANG P Y, et al.Model tests on the penetration resistance of bucket foundations for offshore wind turbines in sand[J]. Journal of marine science and engineering, 2020, 8(5): 368.
[14] WANG H J, YAN C J, GUO Y H, et al.Research on sinking and leveling control technology of tripod bucket foundation in sand[J]. Applied ocean research, 2022, 118: 103013.
[15] 练继建, 陈飞, 杨旭, 等. 海上风机复合筒型基础负压沉放调平[J]. 天津大学学报(自然科学与工程技术版), 2014, 47(11): 987-993.
LIAN J J, CHEN F, YANG X, et al.Suction installation and leveling of composite bucket foundation for offshore wind turbines[J]. Journal of Tianjin University(science and technology), 2014, 47(11): 987-993.
[16] 李涛, 赵荥, 贾楠, 等. 复合筒型基础沉贯调平过程中土体渗流特性研究[J]. 太阳能学报, 2021, 42(12): 253-260.
LI T, ZHAO X, JIA N, et al.Research on soil seepage characteristics in suction penetration leveling process of composite bucket foundation[J]. Acta energiae solaris sinica, 2021, 42(12): 253-260.
[17] 贾沼霖, 李新义, 练继建, 等. 遗留桩坑对临近复合筒型基础倾斜率的影响[J]. 太阳能学报, 2022, 43(11): 166-171.
JIA Z L, LI X Y, LIAN J J, et al.Effect of residual pile pit on inclination of adjacent composite bucket foundation[J]. Acta energiae solaris sinica, 2022, 43(11): 166-171.
[18] DNV GL AS, Offshore standard DNV RP-E303 geotechnical design and installation of suction anchors in clay[S]. 2005.