深基坑施工中的喷锚支护设计

A Design Of Ejected-anchor Bracing Used in the Pithing Deep Foundation Construction

喷锚支护是近２０年来发展起来的一种岩土体加固技术。７０年代成功地应用于边坡及挡土墙的加固，近几年开始用于深基坑边坡支护。本文在分析喷锚支护加固机理的基础上，通过一工程实例，说明喷锚支护技术用于深基坑开挖支护是安全可靠的。与传统支护结构相比，具有工期短，造价更合理的特点。

jected-anchor bracing is a new reinforce technique for rock and soil stratum which has been developing in last two decades. It was used to reinforce the slope and retaining wall successfully in 70's, and begins to have been used in the pitting deep foundation in recent year. This paper,based on analysing the reinforce mechanism of ejected-anchor,explains the reliability of applying this technique in the pitting deep foundation construction by a practical example, and its advantage of shortening the project period and making the cost more reasonable compared with the traditional bracing structure.