加劲肋尺寸对垂直加劲肋方钢管柱-H梁节点的影响

垂直加劲肋节点适用于柱截面较小的方钢管(矩形管)柱和H型钢梁节点.因此,采用有限元方法,以垂直加劲肋长度和高度为主要参数,对垂直加劲肋节点的承载力、刚度、应力分布和破坏模式进行了分析.研究表明:垂直加劲肋节点承载力、弹性刚度和耗能能力均大于内隔板节点,但是强度和刚度退化严重;垂直加劲肋长度对节点承载力和刚度都有影响;加劲肋高度只对节点刚度有影响.

EFFECT OF STIFFENING RIB SIZE ON RECTANGULAR STEEL TUBE COLUMN TO H-BEAM CONNECTIONS WITH VERTICAL STIFFENER

A vertical stiffening rib joint is suitable for rectangular steel tube column with smaller section to H - beam connection. Therefore, using FEM and taking the length and height of vertical stiffening rib as the main parameters, it is analyzed the bearing capacity, rigidity, stress distribution and failure mode of the vertical stiffening rib joint. The results show that the bearing capacity, elastic rigidity and energy consumption of this sort of joint are higher than those of an inner diaphragm joint; whereas its strength and rigidity are decreased greatly. The length of this rib has contribution to the bearing capacity and rigidity of the joint, yet its height can affect only the rigidity of the joint.