湿陷性黄土地区扩体锚索拉拔试验分析

Analysis on Expanded Anchor Cable Drawing Test in Collapsible Loess Regions

我国西北地区存在广阔的湿陷性黄土场地,虽然扩体锚索技术是近年来国内外岩土工程界的热点锚索技术,但是关于湿陷性黄土扩体锚索的现行研究较少。文章选择某湿陷性黄土边坡支护工程实例,对3根一组的扩体锚索进行拉拔试验,试验结果表明:扩体锚索在湿陷性黄土中具有较好的适用性,不仅可以节约锚杆材料的使用,而且能够提高其承载力,研究结果可为类似工程基坑支护设计提供参考。

There are vast collapsible loess sites in northwest China.Although the expanded anchor cable technology has become a hot topic in the field of geotechnical engineering at home and abroad in recent years,there is little current research on the expanded anchor cables in collapsible loess.Taking a collapsible loess slope support engineering as an example,the drawing test was carried out on the expanded anchor cables with three as a group.The test results show that the expanded anchor cable has good applicability in collapsible loess,which can not only save the application of anchor materials,but also improve their bearing capacity.The research results can provide reference for the design of foundation pit support in similar engineering.