INCREMENTAL LAUNCHING ERECTION METHOD OF COMPOSITE PC BRIDGE, AND COMPOSITE PC STRUCTURE

摘要

PROBLEM TO BE SOLVED: To rationalize construction work of a bridge having a steel/concrete composite PC structure using a corrugated steel plate as a web; to shorten a construction period of the construction work; and to reduce erection cost. SOLUTION: A beam 2a manufactured in a form is incrementally launched forward by using an incremental launching method. Tensional force is applied to a PC steel material 12 arranged in the bridge shaft direction from the front beam 2a in the opened form, and concrete of upper-lower floorboards of a beam 2b is placed. After hardening the concrete, an incrementally launching process is repeated by introducing prestress into the concrete by releasing the tensional force of the PC steel material 12. COPYRIGHT: (C)2004,JPO