MANUFACTURING METHOD OF A PRESTRESSED STEEL BEAM USING THE TIGHTENING FORCE OF A BOLT CAPABLE OF INCREASING A YIELD LOAD AND AN ULTIMATE LOAD

摘要

PURPOSE: A manufacturing method of a prestressed steel beam using the tightening force of a bolt is provided to cost-efficiently and simply apply prestress to a steel beam using a steel plate.;CONSTITUTION: A manufacturing method of a prestressed steel beam using the tightening force of a bolt is as follows. A prestressing steel plate is attached to the lower flange of a steel beam(11). The steel beam with the prestressing steel plate is installed on a preflexion loading device, and a preflexion load is loaded to the steel beam. A center prestressing steel plate(121) and end prestressing steel plates(122) are integrally connected to each other. The preflexion load loaded to the steel beam is removed by rotating male screws(222).;COPYRIGHT KIPO 2013