HAUNCHED COLUMN-BEAM JOINT STRUCTURE OF STEEL FRAME

摘要

PROBLEM TO BE SOLVED: To provide a haunched column-beam joint structure which eliminates large stress conventionally generated in a web with a stiffener attached to an inside of a beam flange at a haunch end, the stress being large depending on a position of the attached stiffener and pronounced in proportion to the haunch slope without clarification, and which reduces large manufacturing man-hours conventionally required for bending and welding of a beam end flange.;SOLUTION: A stiffener installed on a haunch end inside a beam flange is positioned such that the end center of the stiffener is arranged on an inner side of the beam flange on a 45° extension from an outer surface position of the haunch as an origin having a height of 0% to 15% of a thickness of the beam flange from the beam outer surface, resulting in effective reduction of stress in a haunch end web. Man-hours required for manufacturing the haunch is reduced by employing an addition type haunch which requires no processing of the beam flange.;COPYRIGHT: (C)2012,JPO&INPIT