FLOOR SLAB STRUCTURE AND FLOOR SLAB CONSTRUCTION METHOD FOR SHIELD TUNNEL

摘要

PROBLEM TO BE SOLVED: To improve construction efficiency of a shield tunnel.;SOLUTION: A floor slab 102 in a shield tunnel comprises: precast concrete blocks 103 and 104 which are installed in a space from a center of a tunnel bottom section to one tunnel side wall section in a tunnel width direction; and an embankment structure 105 constructed between the precast concrete blocks 103 and 104 and the other tunnel side wall section. Installation work of the precast concrete blocks 103 and 104 is executed in a space between a shield machine and a subsequent carriage connected posterior to the shield machine. Construction of the embankment structure 105 is executed in the space posterior to and away from the subsequent carriage.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT