Response of skirted suction caissons to monotonic lateral loading in saturated medium sand
Response of skirted suction caissons to monotonic lateral loading in saturated medium sand
复制标题
裙边吸力沉箱对饱和介质砂中单调侧向荷载的响应
DOI：
10.1007/s13344-014-0046-z
复制
发表时间：
2014-08
影响因子：
1.6
通讯作者：
冯凌云
中科院分区：
文献类型：
--
作者：
李大勇;张雨坤;冯凌云
为研究埋于饱和中砂中的钢裙吸力沉箱的承载力，进行了单调水平荷载模型试验。采用Z_SOIL软件建立了三维连续介质有限元模型。根据实验结果对数值模型进行了校准。采用有限元模型对裙式沉箱的土体变形和土压力进行了研究，并对模型试验进行了扩展。结果表明，在相同荷载水平下，与不带“踢脚板”的常规吸力式沉箱相比，“踢脚板”结构可显著提高沉箱的侧向承载力，并限制其挠度，特别适用于海上风机。此外，转动中心的合理确定对用解析法计算抗侧承载力也起着至关重要的作用。研究还发现，旋转中心与裙式吸力沉箱的尺寸和加载过程有关，即随着裙式宽度和长度的增加，旋转中心向上移动;随着加载的增加，旋转中心向下移动，当沿着沉箱壁的砂全部屈服时，旋转中心保持不变。它是如此复杂，我们不能简单地确定它的位置，像一般的规则吸力沉箱与沉箱的长度比的指定位置。
Monotonic lateral load model tests were carried out on steel skirted suction caissons embedded in the saturated medium sand to study the bearing capacity. A three-dimensional continuum finite element model was developed with Z_SOIL software. The numerical model was calibrated against experimental results. Soil deformation and earth pressures on skirted caissons were investigated by using the finite element model to extend the model tests. It shows that the “skirted” structure can significantly increase the lateral capacity and limit the deflection, especially suitable for offshore wind turbines, compared with regular suction caissons without the “skirted” at the same load level. In addition, appropriate determination of rotation centers plays a crucial role in calculating the lateral capacity by using the analytical method. It was also found that the rotation center is related to dimensions of skirted suction caissons and loading process, i.e. the rotation center moves upwards with the increase of the “skirted” width and length; moreover, the rotation center moves downwards with the increase of loading and keeps constant when all the sand along the caisson’s wall yields. It is so complex that we cannot simply determine its position like the regular suction caisson commonly with a specified position to the length ratio of the caisson.
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DOI：
10.1115/1.4000400
发表时间：
2010-05
影响因子：
1.6
作者：
D. Kwag;I. Cho;S. Bang;Y. Cho
通讯作者：
D. Kwag;I. Cho;S. Bang;Y. Cho
DOI：
--
发表时间：
2005
期刊：
--
影响因子：
--
作者：
R. El-Sherbiny
通讯作者：
R. El-Sherbiny
影响因子：
5.8
作者：
Clayton, C. R. I.
通讯作者：
Clayton, C. R. I.
DOI：
--
发表时间：
2011
期刊：
Chinese Journal of Geotechnical Engineering
影响因子：
--
作者：
Chen Ren-peng
通讯作者：
Chen Ren-peng
影响因子：
5.8
作者：
M. F. Bransby;M. Randolph
通讯作者：
M. F. Bransby;M. Randolph