New method of underground structures using multi elements for non-open cut constructions

摘要

There are several construction methods for non-open-cut underground structures under traffic roads, however, there are some problems about the ground deformation due to construction etc. This paper presents that the development of new type of construction method using multi elements made of steel and concrete, aiming to overcome some problems in matured methods, and shows the strength character of the elements and application of the method to real civil engineering construction projects.