[1]黎冰,等.砂土中吸力式沉箱基础的最大承载力计算方法[J].东南大学学报(自然科学版),2012,42(6):1201-1205.[doi:10.3969/j.issn.1001-0505.2012.06.032]
 Li Bing,Gao Yufeng,et al.Calculation method for maximum bearing capacity of suction caisson foundation in sand[J].Journal of Southeast University (Natural Science Edition),2012,42(6):1201-1205.[doi:10.3969/j.issn.1001-0505.2012.06.032]
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砂土中吸力式沉箱基础的最大承载力计算方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第6期
页码:
1201-1205
栏目:
土木工程
出版日期:
2012-11-20

文章信息/Info

Title:
Calculation method for maximum bearing capacity of suction caisson foundation in sand
作者:
黎冰1 2 高玉峰3 沙成明3 童小东1
1 东南大学土木工程学院,南京 210096; 2 河海大学海岸灾害及防护教育部重点实验室,南京 210098; 3 河海大学岩土工程研究所,南京 210098
Author(s):
Li Bing1 2 Gao Yufeng3 Sha Chengming3 Tong Xiaodong1
1 School of Civil Engineering, Southeast University, Nanjing 210096, China
2 Key Laboratory of Coastal Disasters and Defence of Ministry of Education, Hohai University, Nanjing 210098, China
3 Research Institute o
关键词:
吸力式沉箱基础 承载力 极限平衡法 砂土 平动
Keywords:
suction caisson foundation bearing capacity limit equilibrium sand horizontal translation
分类号:
TU47
DOI:
10.3969/j.issn.1001-0505.2012.06.032
摘要:
为了准确确定砂土中吸力式沉箱基础的最大承载力,应用极限平衡法对其进行分析.基于吸力式沉箱基础平动时的受力特点,充分考虑土压力和摩擦力的发挥过程以及沉箱横截面上各点土压力大小的不同,提出了一种计算砂土中吸力式沉箱基础最大承载力的三维极限平衡方法.方法中假定沉箱侧壁土压力满足Winkler模型,但其值不超过水平极限土压力值; 假定沉箱侧壁与地基土之间的摩擦力在达到最大值之前与两者之间的相对位移成线性正比关系.开展了15组水平荷载作用下吸力式沉箱基础的模型试验,得到了吸力式沉箱基础的荷载-位移曲线.利用所提方法得到的计算结果与模型试验结果吻合较好,说明该方法是准确有效的.
Abstract:
To accurately determine the maximum pull-out loading capacity of suction caisson foundation in sand, the limit equilibrium method is applied. Based on the mechanical characteristics of suction caisson foundation with horizontal translation, a method for three-dimensional limit equilibrium analysis of maximum pull-out loading capacity of suction caisson foundation in sand is proposed. In the proposed method, the development process of earth pressure and shear resistance with displacement, and the characteristics of different earth pressure and side shear resistance over the caisson cross-section are considered. The earth pressure acting on the caisson is assumed to obey the Winkler model and is not in excess of the limiting earth pressure. The shear resistance between caisson and soil is assumed to be linearly proportional to the relative displacement between them before reaching its ultimate value. Fifteen model tests of suction caisson foundation under horizontal loading in sand are conducted to investigate its pull-out behaviors, and the load-displacement curves are obtained. The calculation results by the proposed method agree well with the experimental results, indicating that the proposed method is accurate and effective.

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备注/Memo

备注/Memo:
作者简介: 黎冰(1981—),男,博士,讲师, lbershui@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(50909020,51078082)、海岸灾害及防护教育部重点实验室开放研究基金资助项目.
引文格式: 黎冰,高玉峰,沙成明,等.砂土中吸力式沉箱基础的最大承载力计算方法[J].东南大学学报:自然科学版,2012,42(6):1201-1205. [doi:10.3969/j.issn.1001-0505.2012.06.032]
更新日期/Last Update: 2012-11-20