摘要
为研究砂卵砾石地基混凝土防渗墙受力变形性态,进行了包含底部柔性接触和刚性接触两种情况的防渗墙室内模型试验,并对两种情况下的模型进行了有限元计算。结果表明,墙底柔性接触时防渗墙应力明显小于墙底刚性接触时的防渗墙应力,其模型顶面沉降则大于墙底刚性接触情况;有限元计算的防渗墙应力及模型顶面沉降规律和试验值规律相似,量值略有差异,说明现有的有限元计算方法能反映防渗墙的应力变形特点,具有一定的合理性,但仍需进一步改进。
In order to study the stress and deformation behavior of concrete cut-off wall in sandy gravel foundation,the indoor model test of cutoff wall including flexible contact and rigid contact at the bottom of impervious wall was carried out.And then the finite element calculations of the model in two cases were analyzed.The results show that the strain of the cutoff wall with flexible-contact bottom is smaller than that of the cutoff wall with rigid-contact bottom,while the settlement of the top surface is in contrary.The finite element calculation of the stress of cutoff-wall and the model of the top surface subsidence is similar to the experimental value,and the value is slightly different.It shows that the existing finite element method can reflect the stress and deformation characteristics of the cutoff wall,and it has certain rationality.
出处
《水电能源科学》
北大核心
2017年第9期61-64,共4页
Water Resources and Power
基金
国家自然科学基金项目(51479052)
关键词
防渗墙
模型试验
有限元模拟
砂卵砾石
cutoff wall
model test
finite element calculation
sand and gravel
