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城市隧道开挖引起的地表变形二维数值模拟计算
2D-numeral Simulated Anticipation on Deformation of Ground Due to Subway Excavated
【摘要】 目前使用的力学分析法,如土体本构关系和计算参数难以准确确定变形情况,所以发展新的数值分析方法十分必要.本计算程序就是一种新的探索.本程序主要使用于地层和施工条件较好的情况.特别是计算最终沉降时的效果较好.再对结果处理方面进行了一定的修正,也可以对结果做出评价.对于在计算中用到的tanβ和ΔA的计算也采用了合理的算法,特别是ΔA的计算采用地层损失理论结合自己的方法可算出更直接的结果,已在一些工程计算中得到应用.
【Abstract】 So far,the widely employed mechanics analysis has many shortcomings. For example,the parameters of soil inner relation and calculating is difficulty to be determined.So it is necessary now to approach new analyzing methods. The following procedure is a new study in the field.The procedure is suitable for situations that the surface of the earth and construction conditions are in good state,especially when calculating final subside degrees.After that,some certain revision of the results is made.Tanβ and ΔA are useful in the process of calculating of ΔA which is a better result of combination of the theory of the loss of the layer with the following method.This procedure has been checked in some engineering calculation. So it can be applied in practice.
【Key words】 deformation of ground; excavating of tunnel; subside calculation; simulated anticipation;
- 【文献出处】 兰州交通大学学报 ,Lanzhou Jiaotong University , 编辑部邮箱 ,2005年04期
- 【分类号】U451
- 【被引频次】6
- 【下载频次】165