摘要
Abstract
In order to improve the stability of expressway slope,the application research of prestressed anchor cable technology in the construction of expressway slope is proposed.By rotary drilling,the side slope is drilled under the premise of controlling the error of inclination and horizontal Angle,and using mud for circulation hole protection.Use a grouting machine to inject the cement mortar into the anchor hole,and the pressure and speed of the grouting are reasonably controlled.In the process of tension,adopt the strategy of two step by step tension,and 70％of the total tension is applied in the first tension.The tension of all levels increases gradually according to the multiple relationship of 25％.In the test results,the design of prestressed anchor cable technology,different tensile action.关键词
高速公路边坡/预应力锚索/回转钻进/钻孔施工/循环护孔/注浆/逐级张拉Key words
Highway slope/Prestressed anchor cable/Rotary drilling/Drilling construction/Circulation hole protection/Grouting/Step by step tension分类
交通工程
