CAJ | 학술논문

扩孔锚杆属于岩土工程新技术，具有“延性破坏”特征、提高抗拔力、节约工程造价等优点。公路边坡支护均为永久性支护，普通锚杆受荷后不可避免出现注浆体开裂现象，采用端部承压式扩孔锚杆可有效地解决注浆体开裂及锚筋长期防腐问题。文中介绍扩孔锚杆的力学机理及端部承压式锚杆的施工方法，具体介绍扩孔技术应用于某高速公路边坡支护的工程案例，对扩孔锚杆技术在公路边坡支护推广应用、提高边坡支护水平具有重要意义。
확공묘간속우암토공정신기술，구유“연성파배”특정、제고항발력、절약공정조개등우점。공로변파지호균위영구성지호，보통묘간수하후불가피면출현주장체개렬현상，채용단부승압식확공묘간가유효지해결주장체개렬급묘근장기방부문제。문중개소확공묘간적역학궤리급단부승압식묘간적시공방법，구체개소확공기술응용우모고속공로변파지호적공정안례，대확공묘간기술재공로변파지호추엄응용、제고변파지호수평구유중요의의。
Broaching anchor bolt is a kind of new technique ofgeotechnical engineering. It has the advantages oftensile destroy, enhance anti pull force, save cost etc. Highway slope retaining are permanent support, ordinary bolt can not avoid cracking phenomena of grouting body, the pressure at the end of the type reaming anchor can effectively solve the grouting body cracking and the long-term anticorrosion problems. This paper introduces the anchor reaming dynamic mechanism and pressure type at the end of the construction method of bolt, introduces the engineering practice of some highway slope supporting project, which has an important meaning to enlarge hole anchor technique in highway slope application, and enhance the level of side slope retaining.