朱江林,张林洪,彭邵勇,李冰,胡乐文

• 1:昆明理工大学电力工程学院
• 2:云南交通咨询有限公司

摘要(Abstract)：

库岸路基边坡随水位变化发生沉降或隆起,产生不均匀竖向变形,从而使库岸公路出现局部沉陷、向下滑移,路面开裂等病害,必须采取合理的加固处治措施。采用有限元软件GEO-STUDIO中的SIGMA/W模块,以冷清公路库岸边坡为原型,建立计算用饱和-非饱和土岸坡的概化模型,并考虑渗流场-应力场耦合,分析库岸路基边坡在库水作用下锚加固和桩加固前后竖向变形(隆起或沉降)的变化。分析表明:未加固情况下,随着库水位升高和在正常蓄水位运行,坡体及其路面隆起,库水位降低坡体及其路面在先前变形的基础上发生沉降变形。在桩加固的情况下,沉降或隆起变形均比未加固情况的沉降或隆起变形小很多。在锚加固区域及其上部坡体,隆起或沉降变形也较未加固情况小很多。桩加固或锚加固后均使路面各点的垂直位移最大值和均值减小,垂直位移随水位变化率减小,路面相近点之间的隆起或沉降位移差减小。

关键词(KeyWords)： 库岸路基边坡;锚加固;桩加固;竖向变形;垂直位移

Abstract:

Keywords:

基金项目(Foundation): 云南省交通运输厅科技项目:库岸公路破坏形式及对策研究(云交科2014(A)16)

作者(Author): 朱江林,张林洪,彭邵勇,李冰,胡乐文

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