土工格室在高速公路路基拼接中的应用

 樊见维,贺维庚

(陕西高速公路工程咨询有限公司,陕西 西安 710061

  基于土工格室对路基拼接部位加固机理的研究,根据土工格室和支撑桩复合地基加固的方法,结合西宝高速公路改扩建项目实际情况,优化设计思路,提出适合新旧路基填料不同且存在既有挡墙影响的高速公路拼接施工土工格室加固设计思路,并在实际施工中加以应用。研究表明,土工格室在消除新旧路基拼接不均匀沉降方面效果良好,而利用既有挡墙形成复合地基,可提高加固效果,节省造价。

关键词土工格室路基拼接设计计算复合地基

中图分类号U418          文献标识码A

Geocell Application in Expressway Roadbed Splice

  FAN Jian-weiHE Wei-geng

Shaanxi Expressway Engineering Consulting Co.Ltd..Xi'an 710061China

Abstract: Based on the study of geocell reinforced mechanism in roadbed splice sitethe reinforce method of geocell & sustaining pile composite foundationand the renovation and extension project actual situation of XI-Bao Expresswaythe paper optimizes the design thoughtputs forward a geocell reinforced design thought to expressway splice constructionwhich adopts to different fillers between old and new roadbed and existing effect of existed barricadewhich is used in the actual project. Researches showed thatgeocell has a good effect on eliminating differential settlement of old and new roadbed.If existed barricade is used to form composite foundationwhich could enhance the reinforcement effect and save cost.

Key words: geocellroadbed splicedesign calculationcomposite foundation