淤泥质黏土中复合筒型基础水平承载力试验研究

刘永刚; 丁红岩; 张浦阳

doi:10.11779/CJGE201612022

淤泥质黏土中复合筒型基础水平承载力试验研究 English Version

刘永刚^{1, 3},
丁红岩^{1, 2, 3},
张浦阳^{1, 3}

1. 天津大学水利工程仿真与安全国家重点实验室,天津 300072;
2. 天津大学滨海土木工程与安全教育部重点实验室,天津 300072;
3. 天津大学建筑工程学院,天津 300072

基金项目: 国家自然科学基金项目（51379142）; 天津市应用基础与前沿技术研究计划项目（13JCQNJC06900）

详细信息

作者简介:
刘永刚(1986- ),男,博士后,主要从事土木及海洋结构设计施工研究。E-mail: liuyonggang416@sina.com。

计量
- 文章访问数: 0296
- HTML全文浏览量: 0
- PDF下载量: 0252
出版历程
- 收稿日期: 2015-10-22
- 发布日期: 2016-12-24

Model tests on bearing capacity of composite bucket foundation in clay

LIU Yong-gang^{1, 3},
DING Hong-yan^{1, 2, 3},
ZHANG Pu-yang^{1, 3}

1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;
2. Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China;
3. School of Civil Engineering, Tianjin University, Tianjin 300072, China

摘要

摘要: 复合筒型基础作为一种新型海上风力发电基础,与以往的筒型基础结构形式有较大差别,其极限承载能力及筒土作用机理需进一步深入研究。针对这一问题,设计了复合筒型基础大尺寸模型,开展了淤泥质黏土中的水平承载力试验,得到了复合筒型基础在水平荷载作用下的土压力分布规律、位移变化机制及极限承载能力等。试验结果表明,随着荷载的增加,被动区土压力有较大增长,主动区土压力呈现负压并逐渐恢复为初始土压力;旋转中心的位置随着荷载的增加从中轴线附近逐渐沿着加载方向移动,极限荷载时,旋转中心位于距顶面0.8倍筒壁高度处的分仓板附近。
- 复合筒型基础 /
- 水平承载力 /
- 土压力 /
- 旋转中心
Abstract: As a new type of offshore wind power foundation, the composite bucket foundation has large difference in structural form from the traditional bucket foundation, thus its ultimate bearing capacity and bucket-soil interaction mechanism need further research. Aiming at this problem, a large-size model for the composite bucket foundation is designed, and several horizontal bearing capacity tests are carried out in clay. The distribution of soil pressure, the motion mechanism and the ultimate bearing capacity of the composite bucket foundation are determined depending on the tests. The test results show that the soil pressure on the passive zone increases significantly with the increase of horizontal load, while the soil pressure on the active zone has negative growth at first and returns to the initial value finally. The position of the instantaneous rotation center moves from the central axis to the bottom of the bulkhead at the loading direction with the increase of horizontal load, and it’s approximately 0.8L below the ground surface around the bulkhead at the loading direction under the ultimate horizontal load.
- composite bucket foundation /
- horizontal bearing capacity /
- soil pressure /
- rotation center

HTML全文

参考文献(16)

[1]	BYRNE B W, HOULSBY G T. Foundations for offshore wind turbines[J]. Philosophical Transactions of the Royal Society of London, 2003, 361: 2909-2930.
[2]	邢作霞, 陈雷, 姚兴佳. 海上风力发电机组基础的选择[J]. 新能源及工艺, 2005(6): 34-37. (XING Zuo-xia, CHEN Lei, YAO Xing-jia. Selection of offshore wind turbine foundation[J]. Energy Engineering, 2005(6): 34-37. (in Chinese))
[3]	何炎平, 谭家华. 筒型基础的发展历史和典型用途[J]. 中国海洋平台, 2002(6): 10-14. (HE Yan-ping, TAN Jia-hua. The development history and typical application of bucket foundation[J]. China Offshore Platform, 2002(6): 10-14. (in Chinese))
[4]	. HOULSBY G T, IBSEN L B, BYRNE B W. Suction caissons for wind turbines[J]. Frontiers in Offshore Geotechnics, 2005, 10(6): 1-6.
[5]	DING H Y, LIU Y G, ZHANG P Y, et al. Model tests on the bearing capacity of wide-shallow composite bucket foundations for offshore wind turbines in clay[J]. Ocean Engineering, 2015, 103: 114-122.
[6]	DING H Y, LIAN J J, LI A D, et al. One-step-installation of offshore wind turbine on large-scale bucket-top-bearing bucket foundation[J].Transactions of Tianjin University, 2013, 19(3): 188-194.
[7]	DING H Y, LIU Y G, ZHANG P Y, et al. Influential factors of bucket foundation for offshore wind turbine[J]. Transactions of Tianjin University, 2015, 21(3): 264-268.
[8]	刘润, 陈广思, 刘禹臣, 等. 海上风电大直径宽浅式筒型基础抗弯特性分析[J]. 天津大学学报, 2013, 46(5): 393-400. (LIU Run, CHEN Guang-si, LIU Yu-chen, et al. Resisting moment behavior of large diameter and shallow buried bucket foundation for offshore wind turbine[J]. Journal of Tianjin University, 2015, 46(5): 393-400. (in Chinese))
[9]	ZHU B, KONG D Q, CHEN R P, et al. Installation and lateral loading tests of suction caissons in silt[J]. Can Geotech, 2011, 48: 1070-1084.
[10]	BARARI A, IBSEN L B. Undrained response of bucket foundations to moment loading[J]. Applied Ocean Research, 2012, 36(3): 12-21.
[11]	高志伟, 陈甦, 李武, 等. 桶式基础结构土压力分布规律[J]. 中国港湾建设, 2013(1): 18-21. (GAO Zhi-wei, CHEN Su, LI Wu, et al. Pattern of distribution of soil pressure on bucket foundation[J]. China Harbour Engineering, 2013(1): 18-21. (in Chinese))
[12]	武科, 栾茂田, 范庆来, 等. 软基桶形基础承载性能三维弹塑性有限元仿真[J]. 华中科技大学学报, 2008, 36(5): 110-113. (WU Ke, LUAN Mao-tian, FAN Qing-lai, et al. Simulation of bearing capacity of bucket foundation on soft foundation by three-dimensional elasto-plastic FEM[J]. Journal of Huazhong University of Science and Technology, 2008, 36(5): 110-113. (in Chinese))
[13]	丁红岩, 翟少华, 张浦阳. 海上风电大尺度顶承式筒型基础承载力特性有限元分析[J]. 工程力学, 2013, 30(6): 124-132. (DING Hong-yan, ZHAI Shao-hua, ZHANG Pu-yang. Finite element analysis of bearing capacity behavior of cover-load- bearing large-scale bucket foundation for offshore wind turbines[J]. Engineering Mechanics, 2013, 30(6): 124-132. (in Chinese))
[14]	乐丛欢, 丁红岩, 张浦阳. 分舱板对海上风机混凝土筒型基础承载模式的影响[J]. 工程力学, 2013, 30(4): 429-434. (LE Cong-huan, DING Hong-yan, ZHANG Pu-yang. Influences of bulkheads on the bearing mode of concrete bucket foundation for offshore wind turbines[J]. Engineering Mechanics, 2013, 30(4): 429-434. (in Chinese))
[15]	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.
[16]	LIAN J J, CHEN F, WANG H J. Laboratory tests on soil-skirt interaction and penetration resistance of suction caissons during installation in sand[J]. Ocean Engineering, 2014, 84(3): 1-13.

施引文献(4)

期刊类型引用(2)

1.	王军，刘志明，蔡国军，叶飞龙，宋小进. 基于砂土界面剪切试验的自传感压电土工电缆监测效果评价. 岩土工程学报. 2023(10): 2023-2031 . 本站查看
2.	崔新壮，包振昊，郝建文，杜业峰，张圣琦，李向阳，赵延涛. 重载公路路基动力响应现场测试与三维空间分布规律. 中国公路学报. 2023(10): 75-83 . 百度学术