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    張永進(jìn)
    （浙江省水利水電勘測(cè)設(shè)計(jì)院  杭州 310002）

[提要]  利用有限元法分析土體泊松比v對(duì)基坑地面沉降的影響，以地面沉降變形體積為標(biāo)準(zhǔn)，提出了地面變形的影響范圍，得出了地面沉降的變形模式以及地面最大沉降量的實(shí)用計(jì)算方法。
[關(guān)鍵詞]  基坑 地面沉降 變形體積 泊松比 變形模式 有限單元法

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