海上风机分段斜壁桶形基础的水平承载力计算方法

doi:10.16285/j.rsm.2015.10.002

›› 2015, Vol. 36 ›› Issue (10): 2750-2758.doi: 10.16285/j.rsm.2015.10.002

海上风机分段斜壁桶形基础的水平承载力计算方法

刘金龙¹，陈陆望²，王吉利³，汪东林⁴

1.合肥学院建筑工程系，安徽合肥 230601；2.合肥工业大学资源与环境工程学院，安徽合肥 230009； 3.中国科学院武汉岩土力学研究所岩土力学与工程国家重点试验室，湖北武汉 430071；4.安徽建筑大学土木工程学院，安徽合肥 230601

收稿日期:2014-05-07 出版日期:2015-10-10 发布日期:2018-06-13
作者简介:刘金龙，男，1979年生，博士，教授，主要从事岩土工程方面的教学与研究。
基金资助:
国家自然科学基金（No. 41306088）；安徽省自然科学基金（No. 1308085QE85）；合肥学院土木工程重点建设学科项目（No. 2014xk04）。

Method for calculating the horizontal bearing capacity of segmentally-tapered bucket foundation of offshore wind turbines

LIU Jin-long¹, CHEN Lu-wang², WANG Ji-li³, WANG Dong-lin⁴

1. Department of Civil Engineering, Hefei University, Hefei, Anhui 230601, China; 2. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei , Anhui 230009, China; 3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 4. School of Civil Engineering, Anhui Jianzhu University, Hefei, Anhui 230601, China

Received:2014-05-07 Online:2015-10-10 Published:2018-06-13

摘要/Abstract

摘要： 在部分浅海由于大型施工船舶无法进入，海上风电工程中传统的重力式基础或桩基础不再适用，为此提出了一种新型基础——分段斜壁桶形基础。基于极限平衡法对分段斜壁桶形基础的水平承载力进行了系统性研究，提出了水平承载力计算方法，并进一步考察了斜壁倾角、桶高、桶径、土性参数等对水平承载力的影响。计算表明，水平承载力随着上部桶壁倾角、下部桶壁倾角、地基反力比例系数、桶基顶部直径、桶基高度的增大而增大，随着海床深度的增加而减小。基于体积压缩率的概念，论证并推荐优先使用上部桶壁倾斜、下部桶壁直立的桶形基础构型。建议发展针对海床地基反力比例系数的准确确定方法。研究结果有助于对桶形基础进行优化设计。

关键词: 海上风机, 分段斜壁桶形基础, 水平承载力, 极限平衡法, 体积压缩率

Abstract: Because large construction ships cannot enter the shallow sea, traditional configuration foundations, such as gravity-type foundation and pile foundation, are not suited for offshore wind power project in shallow seas. Therefore, a new type of foundation—segmentally-tapered bucket foundation is proposed. Based on the limit equilibrium method, a systematic method is proposed to calculate the horizontal bearing capacity of the segmentally-tapered bucket foundation. The influences of obliquity of wall, foundation height, top diameter of bucket and soil parameters on the horizontal bearing capacity of the segmentally-tapered bucket foundation are analyzed. It is found that the horizontal bearing capacity increases with the increase of the wall obliquity, soil resistance, top diameter of bucket and foundation height, while decreases with the increase of the depth of seabed. Based on the concept of volume compression ratio, the bucket foundation with inclined upper section wall and vertical lower section wall is recommended and demonstrated. An accurate method is proposed to determine the proportional coefficient of soil resistance. The results are helpful in the optimization design of traditional bucket foundation.

Key words: offshore wind turbine, segmentally-tapered bucket foundation, horizontal bearing capacity, limit equilibrium method, volume compression ratio

中图分类号:

P 754

刘金龙，陈陆望，王吉利，汪东林,. 海上风机分段斜壁桶形基础的水平承载力计算方法[J]. , 2015, 36(10): 2750-2758.

LIU Jin-long , CHEN Lu-wang , WANG Ji-li , WANG Dong-lin,. Method for calculating the horizontal bearing capacity of segmentally-tapered bucket foundation of offshore wind turbines[J]. , 2015, 36(10): 2750-2758.

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海上风机分段斜壁桶形基础的水平承载力计算方法

Method for calculating the horizontal bearing capacity of segmentally-tapered bucket foundation of offshore wind turbines

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