土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (3): 380-384.

• 测试技术 • 上一篇    下一篇

人工硬壳层在海域公路中应用试验研究

高大卫1，高世虎2，袁国辉2，徐慧敏3   

  1. (1.汇壹（上海）环境岩土科技有限公司，上海 20000；2.温州大学建筑与工程学院，浙江温州 325035；3.浙江省交通规划设计研究院有限公司，杭州 310000)
  • 收稿日期:2020-03-05 修回日期:2020-04-22 出版日期:2020-06-20 发布日期:2020-06-22
  • 作者简介:高大卫（1987-），男，助理工程师，研究方向为软土地基处理施工。
  • 基金资助:
    温州市科技计划项目：S20180001；温州市科学技术协会服务科技创新项目：2019KXCX-RH06

Experimental Study on Application of Artificial in Situ Hard Crust in Sea Highway

GAO Dawei1, GAO Shihu2, YUAN Guohui2, XU Huimin3   

  1. (1.Huiyi (Shanghai) Environmental Geotechnical Technology Co., Ltd., Shanghai,20000;
    2.College of Civil Engineering and Architecture, Wenzhou University, Wenzhou, 325035;
    3.Zhejiang Communications Planning and Design Institute Co., Ltd., Hangzhou,310000)
  • Received:2020-03-05 Revised:2020-04-22 Online:2020-06-20 Published:2020-06-22

摘要： 考虑到海域公路工程无天然硬壳层这一特点，针对海域公路地基处理最为常用的排水预压法，通过室内试验和数值模拟对人工硬壳层在海域公路中的应用进行研究，对比无硬壳层工况结果，人工硬壳层明显减小了路堤表面沉降和路堤堤脚水平位移，路堤表面沉降减小20%左右。此外，通过数值分析结果可知，有硬壳层作为持力层，路堤表面差异沉降相对无硬壳层工况较小。结合海域公路所处特殊环境，针对沿海滩涂路段可采用淤泥就地固化技术联合其他软基处理方式进行处理，以达到路堤长期稳定。

关键词: 海域公路, 人工就地硬壳层, 模型试验, 数值模拟

Abstract: Considering the fact of no hard crust existed in the highway along coastal soft soils that can be used, this paper proposes the conventional surcharge method to create an artificial hard crust layer using manmade drainage measures based on the laboratory model test and numerical simulation results. Compared with the original soil layer, the improved soil reduces the deformation the vertical settlement at top of embankment by 20% and reduces the horizontal deflection at the toe of the embankment. In addition, the numerical analysis indicates that the differential settlement of the roadway surface in the manmade hard crust layer can also effectively be reduced compared with the original soft soils. With the special conditions in the coastal soft soil area, the other strengthening methods can also be introduced to improve the surface soil layer for the long term stability of highway embankment.

Key words: Costal Highway, Manmade Hard Crust, Model Tests, Numerical Simulations

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