土工基础

›› 2014, Vol. 28 ›› Issue (6): 99-102.

• 工程实录 • 上一篇    下一篇

路堑边坡施工过程中后缘变形演化分析

林素明，李建福   

  1. （福建建工集团总公司，福州 350003）
  • 收稿日期:2014-07-17 出版日期:2014-12-25 发布日期:2015-01-12
  • 作者简介:林素明(1968-),男,高级工程师，研究方向为公路工程的施工与管理。

Deformation at the Crest of Highway Cut Slopes

LIN Suming, LI Jianfu   

  1. (Fujian Construction Engineering Group Co., Fuzhou 350003)
  • Received:2014-07-17 Online:2014-12-25 Published:2015-01-12

摘要： 在路堑边坡施工过程中，研究边坡后缘的变形趋势可以较早地提供整个边坡的变形的信息，对整个施工过程有实际的工程意义。基于数值模拟和现场监测结果，以漳州招银疏港高速公路A3标边坡(ZK14+165)为例来探索在施工过程中路堑边坡上缘的变形演化过程。结果表明：1）除了新开挖平台由于卸荷引起的变形以外，边坡上缘是产生变形的主要区域；2）随着开挖施工的进行，上缘变形越来越大，靠近开挖面处最大；3）变形发生在坡顶以上10 m左右的范围内（针对此开挖高度为38.8 m的路堑边坡），变形区域由上缘坡面到开挖面近似螺旋曲线的形状。

关键词: 路堑边坡, 变形, 上缘

Abstract: The progressive deformation at the crest of highway cut slopes can provide firsthand information on the entire stability and deformation of the cut slopes; therefore, it has a practical meaning to study the deformation at the crest. Based on the numerical analysis results and the monitored data, this paper presents a case history of the progressive deformation at the crest of a cut slope in Bid Package A3 (ZK14+165) of Zhaoyin Highway Project in Zhangzhou. The results have the following conclusions: 1) Except for the unloading deformation on the newly excavated benches, the deformation zone at the crest has the predominant displacements; 2) The deformation increase with the depth of the cut and the largest deformation is close to the slope; 3) For a cut depth of 38.8 meters slope, the deformation occurs within a 10meter horizontal zone to the edge and a spiral deformation curve can be found from the crest to the toe of the slope.

Key words: Cut Slopes, Deformations, Slope Crests