非稳定边坡坡间挡土墙双锚建造技术研究

在非稳定边坡上修筑可以长期稳定的挡土墙是长期困扰国内外公路、铁路建设的重大技术难题。本文以山东栖霞-莱阳高速公路K59 470～630段工程为背景,对坡间挡土墙的设计方法和施工技术进行了系统深入的研究,首次提出并成功实施了集护坡与挡土为一体的支挡结构,将预应力锚杆和锚定板技术进行有效组合,经理论探讨和工程实践形成了一项适用于坡间挡土墙建造的新技术———双锚支挡建造技术,成功地解决了这一难题。

Study of Double Anchor Constructing Technique and Its Application in Unstable Slope Retaining Wall

How to build stable retaining wall on unstable slope is a question puzzling highway and railway constructors for a long time.This paper thoroughly study the design method and construction technique of building stable retaining wall on slope according to the practical engineering of Qixia-Laiyang expressway in Shandong province.In this paper the authors bring forward for the first time and successfully implement a bracing structure with double anchor technique which integrates supporting slope and blocking soil technique.This technique effectively combines pre-stress anchor with bolted plate technique and verified by theoretical research and engineering practice.By using the double anchor support technique it is possible to solve the difficult problem of building stable retaining wall on unstable slope.