土工基础

›› 2016, Vol. 30 ›› Issue (2): 237-240.

• 工程实录 • 上一篇    下一篇

粗粒料加筋土边坡格栅应变在空间和时间的变化规律研究

许业波   

  1. （广州港工程管理有限公司，广州 510730）
  • 收稿日期:2016-03-02 出版日期:2016-04-20 发布日期:2016-04-27
  • 作者简介:许业波（1964-），男，高级工程师，研究方向为港口工程管理及研究。

Variation of Strain with Spatial and Time in the Geogrid Reinforced Coarse Aggregate Soil Slopes

XU Yebo   

  1. (Guangzhou Harbor Engineering Management Co. Ltd., Guangzhou 510730)
  • Received:2016-03-02 Online:2016-04-20 Published:2016-04-27

摘要： 加筋土作为一种边坡加固措施得到广泛应用，而粗粒料因为造价低、强度高、摩阻力大等优点得到越来越多的采用。又因其有别于细粒土的特性，对格栅及筋土界面会产生不同的影响。根据实际工程经验，对土工格栅抗拉强度及筋土界面影响因素和加筋边坡破坏方式进行了分析。依托工程案例，采用极限平衡法对设计方案进行安全性计算，通过监测数据对比分析了土工格栅应变随着加筋位置和时间的变化规律，对类似工程的设计和施工具有一定的指导意义。

关键词: 粗粒料, 加筋土边坡, 强度折减系数, 土工格栅应变, 极限平衡法

Abstract: Reinforced Soil Slope (RSS) is a widely used slope stability mitigation projects. The coarse aggregates are widely used as the backfill material due to their low cost, high compressive strength and high frictional resistance. The interactions between the geogrid and the coarse aggregates are not fully understood. This paper present a case history of the coarse aggregate filled RSS. The interface properties, the tensile strength of the geogrid in the RSS and the RSS failure modes are discussed. The factor of safety is obtained by using limit equilibrium method. The strain in the geogrid at different locations are monitored during the construction.

Key words: Coarse-Aggregates, Reinforced Soil Slopes, Strength Reduction Factors, Strain in the Geogrid, Limit Equilibrium Method