张永进
    （浙江省水利水电勘测设计院  杭州 310002）

[提要]  利用有限元法分析土体泊松比v对基坑地面沉降的影响，以地面沉降变形体积为标准，提出了地面变形的影响范围，得出了地面沉降的变形模式以及地面最大沉降量的实用计算方法。
[关键词]  基坑 地面沉降 变形体积 泊松比 变形模式 有限单元法

The ground settlement is much influenced by Possion Ratio v, this problem is discussed by FEM. The influence distance of ground settlement, the distribution model of ground settlement and the method of calculating maximum ground settlement have been achieved.
Keywords: excavation pit; ground settlement; FEM; Possion Ratio; distribution model