Effect of Reinforcement on Bearing Capacity of Foundations
Effect of Reinforcement on Bearing Capacity of Foundations
复制标题
加筋对地基承载力的影响
DOI：
10.1061/9780784413425.049
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Susumu Mio
中科院分区：
文献类型：
--
作者：
T. Nakai;H. Shahin;Y. Morikawa;S. Masuda;Susumu Mio
为了提高地基的承载能力，在地基下方铺设土工合成材料。在先前的研究中，作者通过改变加筋材料的长度和铺设深度来研究加筋机理（中井等人，2009年）。在本研究中，为了获得更高的承载能力，研究了加筋材料各边缘与土壤固定时的加筋效果。为此，进行了二维模型试验和相应的非线性有限元分析。在这些试验和模拟中，在加筋长度不变的情况下改变加筋深度。讨论了在同心荷载和偏心荷载作用下的加筋效果。结果表明，在模型试验中，当在同心荷载和偏心荷载作用下将加筋材料以适当深度设置在地基中时，承载能力显著提高。数值模拟的结果——其中适当考虑了土壤的应力 - 应变行为以及土壤与加筋材料之间的摩擦行为——与观测结果吻合良好。
To increase bearing capacity of a foundation, geosynthetic is laid beneath the foundation. In previous research, the authors investigated the reinforcement mechanism by changing the length and the laying depth of the reinforcement (Nakai et al, 2009). In the present study, to get more bearing capacity, the reinforcing effect in the case that each edge of the reinforcement is fixed with the soil is investigated. For this purpose, 2D model tests and the corresponding non-linear finite element analysis are carried out. In these tests and simulation, the depth of the reinforcement is changed under constant length of reinforcement. Reinforcing effects, under concentric and eccentric load, are discussed. It is revealed that a significant increase of the bearing capacity is observed in the model tests when the reinforcement is set up in the ground with an appropriate depth under both concentric and eccentric loads. The results of numerical simulation - in which the stress-stain behavior of the soil and the frictional behavior between soil and reinforcement are properly taken into consideration - show good agreement with the observed results.