本小虾因毕业设计而需要学习plaxis软件计算深基坑的施工过程,主要的工作是通过plaxis对一个基坑采用两种水压的考虑方法看看有什么不同,这是基坑的相关数据(这个是勘察报告里面的)
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表1土层主要物理力学参数
开挖的降水方案是基坑开挖时坑内降水,坑外不降水考虑,桩体采用钻孔咬合灌注桩1m径咬合25cm,桩入土深度27m,基坑开挖深度15.5m考虑.在基坑内设置5道水平支撑,支撑采用那个钢管称609@16,
小虾建立按水位线模型中,开挖步计算水压时候的水位线方法是设置一个一般潜水位在1.0m的位置,然后基坑开挖区内的土体采用类组水位线,开挖完的土体采用dry cluster选项,也就是某个计算步中只有两条水位线例如(0,39)-(30,39);(30,25-40).按照这样的计算方法计算出来的桩的水平位移有60多公分,这样的结果个人觉得是不正确的,所以求知识望高人指导,小生不胜感激.
桩是采用plate来模拟,内支撑是采用锚定杆模拟的,土体的参数数据是按照这张图表所给出来的结果.相同的参数,我用地下水渗流计算模拟出来的结果就是只有50几毫米的,这和实际情况比较符合.
求达人指点迷津哈.