GUIDE TO SOIL NAIL DESIGN AND （土钉支护设计和指南）.pdf

GEOGUIDE 7 GUIDE TO SOIL NAIL DESIGN AND CONSTRUCTION GEOTECHNICAL ENGINEERING OFFICE Civil Engineering and Development Department The Government of the Hong Kong Special Administrative Region GEOGUIDE 7 GUIDE TO SOIL NAIL DESIGN AND CONSTRUCTION GEOTECHNICAL ENGINEERING OFFICE Civil Engineering and Development Department The Government of the Hong Kong Special Administrative Region 2 © The Government of the Hong Kong Special Administrative Region First published, March 2008 Prepared by: Geotechnical Engineering Office, Civil Engineering and Development Department, Civil Engineering and Development Building, 101 Princess Margaret Road, Homantin, Kowloon, Hong Kong. 3 FOREWORD This Geoguide presents a recommended standard of good practice for the design, construction, monitoring and maintenance of soil-nailed systems in Hong Kong. The Geoguide summarises the experience gained from the use of the soil nailing technique in Hong Kong and the findings of related technical development work. The recommended good practice set out in this Geoguide primarily covers the use of high yield deformed steel bars installed by the drill-and-grout method for reinforcing slopes, retaining walls and excavations. The compilation of this Geoguide was supported by a series of soil nail related studies initiated by the Geotechnical Engineering Office (GEO), researchers and practitioners, which facilitated development of systematic guidelines on design and construction to enhance the reliability of soil-nailed systems. The studies included li