土工基础

土工基础 ›› 2022, Vol. 36 ›› Issue (4): 665-669.

• 测试技术 • 上一篇    下一篇

高速公路轻质土陡坡路堤现场监测分析

伍小方1，姜峰林2，刘贤旺3，4   

  1. （1.广西路桥工程集团有限公司，南宁 530011；2.广东首城建设科技有限公司，广州 511403；
    3.长安大学公路学院，西安 710064；4.广西玉柴工业园区管理委员会，广西玉林 537000）
  • 收稿日期:2022-05-11 修回日期:2022-05-23 出版日期:2022-08-30 发布日期:2022-08-25
  • 通讯作者: 刘贤旺（1995—），男，工学硕士，研究方向为公路与抗震工程。
  • 作者简介:伍小方（1977—），男，高级工程师，研究方向为道路工程管理。
  • 基金资助:
    云南省保山市科技局资助项目（20190312362）

Deformation Monitoring of an Expressway Lightweight Fill Embankment

WU Xiaofang1, JIANG Fenglin2， LIU Xianwang3,4   

  1. (1.Guangxi Highway and Bridge Engineering Group Co. Ltd., Nanning 530011；
    2.Guangdong Shoucheng Construction Technology Co Ltd., Guangzhou 511403；
    3.College of Highway, Changan University, Xi’an 710064；
    4.Guangxi Yuchai Industrial Park Administrations, Yulin 537000)
  • Received:2022-05-11 Revised:2022-05-23 Online:2022-08-30 Published:2022-08-25

摘要： 为了获取泡沫轻质土陡坡路堤工后的变形数据，以云南省保山市昌保高速公路为依托工程开展研究。昌保高速公路最大的填筑高度达15 m，途经多段陡坡，地势险峻，给公路的工程建设带来一定的难度。结合现场实际工程的变形监测，研究了泡沫轻质土陡坡路堤在填筑工后的变形。通过埋设监测元件，获取了地基表面的沉降、路基临空面侧向位移、路堤坡脚处距地表下0.5 m与3.8 m深度的侧向位移数据，其中，工后的地基表面最大沉降值为-39.87 mm（填筑高度为13.5 m）；路基临空面最大侧向位移8.12 mm；坡脚处沿地表0.5 m与3.8 m深度处的侧向位移分别为2.46 mm和3.67 mm。

关键词: 陡坡路堤, 泡沫轻质土, 变形, 地基表面, 坡脚

Abstract: This paper presents a case history of the post construction deformation monitoring results of a geofoam filled embankment in Changbao Expressway Project in Baoshan City. The project is located in high slope mountainous area with high seismic intensity area in southwest of Yunnan Province with a maximum embankment height of 15 meters. The deformation in the geofoam embankment was monitored and the post construction deformation is presented in the paper. The results and conclusions are the monitored settlement data at highway subgrade, lateral deflection at slope surface and lateral deflections at 0.5 meters and 3.8 meters below the toe of embankment slope. The maximum post construction settlement at highway embankment is 39.87 mm under an embankment height of 13.5 meters. The lateral deflection at slope surface is 8.12 mm and the lateral deflections at 0.5 m and 3.8 m below tow of embankment slope are 2.46 and 3.67 mm, respectively.

Key words: Embankment with High Slope Angle, Geofoams, Deformation, Subgrade, Toe of Slope

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