盖板加强梁柱节点计算
Design of Beam-to-Column Connection Strengthened by Cover Plates
童根树1
作者信息
- 1. 浙江大学高性能结构研究所,杭州 310058
- 折叠
摘要
利用 JGJ 99-2015《高层民用建筑钢结构技术规程》条文说明中给出的钢梁塑性铰位置反推框架柱表面的抗弯强度要求,即该抗弯强度应不小于连接系数倍的钢梁塑性弯矩标准值,以此来计算盖板面积,确定盖板长度的上限值.算例表明:在框架柱是矩形钢管的情况下,盖板面积约为翼缘面积的 25%～30%;对短梁,JGJ 99-2015 规定的连接系数偏小,为此给出了高于 JGJ 99-2015 要求的连接系数计算公式.
Abstract
Using the strong connection factors and the pre-established position of the plastic hinges of framed beam given in JGJ 99-2015,the strength demand on the column face is derived,from which the upper limit of the length of the cover plate is determined,and the required area of the cover plates is computed.An example shows that when the frame column using rectangular steel tube,the required area is about 25%-30%of the flange area of the beam.For short beams,the code-specified strong joint factor of JGJ 99-2015 is not great enough,the paper presented a equation to compute required strong joint factor higher than that of JGJ 99-2015.
关键词
梁柱节点/加强/盖板/能力设计法Key words
beam-to-column connection/strengthening/cover plate/capacity design引用本文复制引用
出版年
2024
NETL
NSTL
万方数据