Bearing Capacity of Footing Resting on Sand for Eccentric Vertical Load
Bearing Capacity of Footing Resting on Sand for Eccentric Vertical Load
复制标题
DOI：
10.1007/978-981-15-2184-3_148
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
P. Quang;Ohtsuka Satoru;Isobe Koichi;Fukumoto Yutaka
中科院分区：
文献类型：
--
作者：
P. Quang;Ohtsuka Satoru;Isobe Koichi;Fukumoto Yutaka
采用二维刚塑性有限元法对砂土基础抗偏心竖向荷载的承载力进行了估算。该研究在基础-土体系中引入了界面单元，以正确评价基础与土的相互作用，这对基础-土体系的破坏机制有很大影响。考虑了基础表面的两种摩擦条件，即完全粗糙条件和光滑条件。深入研究了偏心竖向荷载对基础和破坏包络面接触应力分布的影响。根据得到的结果可以看出，接触应力分布的变化反映了偏心距长度和摩擦条件。最后，通过与已有的失效包络方程的比较，提出了新的失效包络方程。
This study estimated the bearing capacity of footing against eccentric vertical load on sandy soils by using two-dimensional rigid plastic finite element method (RPFEM). The study newly introduces an interface element into the footing-soil system to properly evaluate the interaction between the footing and the soil, which greatly affects the failure mechanism of the footing-soil system. Two friction conditions of the footing surface were considered, namely, a perfectly rough and smooth conditions. The effect of the eccentric vertical load on the contact stress distribution at the footing base and the failure envelope inV-Mplane is thoroughly investigated. According to the obtained results, it can be seen that changes in the contact stress distribution reflecting to both the eccentricity length and the friction condition were observed. Finally, the new equation is proposed for the failure envelope through the comparison with those found in the literature.