METHOD OF CONSTRUCTING ARTIFICIAL GROUND ON SUBBASEMENT TYPE ROAD

摘要

PROBLEM TO BE SOLVED: To construct an artificial ground on a subbasement type road at low cost without completely cutting off traffic in service.;SOLUTION: A span length of a SPC girder 3 which is designed as a simple girder with a distance L of earth retaining walls 2a, 2b on both the sides of a subbasement type road as the span length and in which a steel frame material is disposed on the compressed side is shorter than l/2; a connecting steel frame 32 projecting from the end surface and a sheath 34 passing a connecting PC steel material therethrough are provided at the tip end of the SPC girder 3. The SPC girder 3 is stretched from the earth retaining walls 2a, 2b to a temporary pad 15 provided at the center of the road. The connecting steel frames 32 are connected to each other; concrete is pored and cured in the connecting part; the connecting PC steel material is inserted into the sheath 34 to introduce prestress to make them integrally connected. The temporary pad 15 is removed, so that the simple girder is formed between the earth retaining walls 2a, 2b. A number of the SPC girders 3 are constructed on the road to construct an artificial ground 10 on the subbasement type road.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT