| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method capable of reducing a bypass to be installed during construction and shortening the time from closure to opening of a ground traffic road, as a method of forming an underground space under the ground traffic road. <P>SOLUTION: The method of forming underground spaces 18 and 19 under a ground traffic road 12 includes: a step of constructing, in soil, substructures 22, 24 and 26 for supporting a superstructure 20 configuring the ground traffic road 12; a step of constructing the superstructure 20 on the soil after the substructures 22, 24 and 26 are constructed; and a step of forming the underground spaces 18 and 19 by excavating the lower part of the superstructure 20. <P>COPYRIGHT: (C)2013,JPO&INPIT |
