土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (6): 753-756.

• 测试技术 • 上一篇    

真空联合堆载预压法处理公路软基效果检验

李先行，范景成，殷贝贝，张 豪，张 学   

  1. （中国建筑一局（集团）有限公司，广东江门 529000）
  • 收稿日期:2020-08-26 修回日期:2020-09-17 出版日期:2020-12-30 发布日期:2020-12-25
  • 作者简介:李先行（1985-），男，高级工程师，研究方向为基础设施建设及管理。

Construction Monitoring of Surcharge Combined with Vacuum Preloading Method in Highway Embankment over Soft Soils

LI Xianxing, FAN Jingcheng, YIN Beibei, ZHANG  Hao， ZHANG Xue   

  1. (China Construction First Group Co. Ltd., Jiangmen 529000)
  • Received:2020-08-26 Revised:2020-09-17 Online:2020-12-30 Published:2020-12-25

摘要： 在公路工程中，软土路基对工程的影响十分明显，如处理不当将造成一系列的问题，在公路软基处理中，真空联合堆载预压法堆载部分可以直接作为后期路堤使用，不需要进行卸载，可以节省工期、降低造价。以某快速通道项目为例，根据项目实际情况对真空联合堆载预压法进行研究、对软基的处理效果进行分析对比得出，采用真空联合堆载预压法处理公路软土地基能够很好地达到软基处理的目的。

关键词: 真空联合堆载预压, 水平位移, 地表沉降, 加固机理

Abstract: The impact of highway embankment over soft soils on the entire highway construction project is obvious. Inappropriately treated soft soil might result in a series unfavorable issues that affecting the performance during the construction as well as in service life of the highway embankments. As the surcharge load in the combination of surcharge and vacuum preloading methods, the soil can also serve as part of the embankment fill and no need of significant unloading. Therefore, both the construction schedule and cost can be saved. This paper presents a case history of an expressway project. The construction monitoring results for the combined surcharge and vacuum preloading methods are compared with the estimated results. It is proved that this combination is effective for the soft soil improvement.

Key words: Surcharge Combined with Vacuum Preloading Method, Horizontal Defections, Ground Subsidence, Soil Improvement Mechanism

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