无碴轨道钢筋混凝土桩网地基加固施工技术

Foundation-reinforcing Engineering Techniques for Ballastless Track Reinforcing Concrete Pile Mesh

介绍了钢筋混凝土桩网复合地基加固技术的机理、工艺以及在我国第一条无碴轨道试验段上的应用情况。结合工程实例,阐述了采用长螺旋钻机在岩层中成孔,用电流法控制钻头的入岩深度以及利用钻机进行先灌混凝土后插钢筋笼等关键施工技术,为我国的客运专线建设提供借鉴。

This article introduces the theory and technology of the concrete pile mesh compound foundation-reinforcing technique of and its practical application in the first ballastless track test section in our country. In the light of engineering examples, this article describes such key construction techniques as hole forming in rock stratum with long spiral auger, rock-entering depth of drilling head controlled with method of electric current, and concrete casting carried out before reinforcing cage inserted with the tool of driller, which provides meaningful experiences for the construction of passenger transport line.