INNOVATIVE EUROPEAN TECHNOLOGIES TO ACCELERATE CONSTRUCTION OF EMBANKMENT FOUNDATIONS―PART Ⅰ: GEC, AUGEO CFA

摘要

In today's fast-track construction environment, owners are searching for non-conventional technologies to build their projects faster and safer while maintaining traffic flow during construction. To that end designers and contractors are providing solutions that incorporate many unique features to expedite construction processes. In addition to timely delivery of the finished highway products, there is an increasing interest in making the initial investment in applying innovative technologies and thereby minimizing costly maintenance of highway projects. Accordingly, the aim of this paper (along with the accompanying paper) is to examine innovative technologies, developed mostly in Europe, that accelerate construction of highway, runway and railway embankment foundations. For each technology, a basic concept, installation technique(s), and design considerations are discussed, along with the case history of a real-world project. The Geotextile Encased Columns (GEC), AuGeo, and Continuous Flight Auger (CFA) are presented in Part Ⅰ. Deep Mixing (DM), Mass stabilization, Cut-Mix-Injection (FMI), and Combined soil Stabilization with Vertical columns (CSV) technologies are discussed in Part Ⅱ.