外露式柱脚的转动刚度及其对门式刚架设计的影响分析  

Rotational Stiffness of Exposed Steel Column Bases and the Influence on Gabled Frames Design

作　　者：范康 王晓飞[2] FAN Kang;WANG Xiaofei(Xi’an Engineering Investigation and Design Research Institute of China National Non-ferrous Metals Industry,Xi’an,Shaanxi 710054,China;Academy of Civil Engineering&Architecture,Nanyang Normal University,Nanyang,He’nan 473061,China)

机构地区：[1]中国有色金属工业西安勘察设计研究院有限公司,陕西西安710054 [2]南阳师范学院土木建筑工程学院,河南南阳473061

出　　处：《水利与建筑工程学报》2022年第2期204-208,共5页Journal of Water Resources and Architectural Engineering

摘　　要：针对外露式柱脚的转动刚度在结构设计中常常被忽略的问题,为了进一步研究柱脚转动刚度对结构的影响,总结合理的计算方法,基于当前的相关的理论和试验研究成果,归纳了几种计算柱脚转动刚度的计算方法及公式,并研究了不同计算方法的背景条件和适用范围。通过具体工程案例,对几种计算方法得到的刚度结果及其对上部结构的影响进行了对比分析。结果表明,三种公式各有其适用特点,转动刚度对结构的影响较大。外露式柱脚的转动刚度与柱脚锚栓的尺寸,底板的厚度,锚栓和加劲肋的布置及支座混凝土强度有很大的关系,增大锚栓直径,增加底板厚度都会显著提高柱脚转动刚度。Aiming at the problem that the rotational stiffness of the exposed steel column base is often ignored in the structural design,and to further analyze the effects of the rotational stiffness of the column base on the structure,this paper summarized a reasonable calculation method based on the current relevant theoretical and experimental research results.Several calculation methods and formulas for calculating the rotational stiffness of the column base are summa-rized,and the background conditions and applicable scope of different calculation methods were discussed.Several specific engineering cases were summarized,the stiffness results obtained by several calculation methods and their effects on the superstructure are compared and analyzed.The results are as follows.Each of the three formulas has its own applicable characteristics,the rotational stiffness has a great influence on the structure.The rotational stiffness of the exposed column base has a great relationship with the size of the column base anchor bolt,the thickness of the bot-tom plate,the arrangement of the anchor bolt and stiffener and the concrete strength of the bearing;increasing the di-ameter of the anchor bolt and increasing the thickness of the base plate will significantly increase the rotational stiffness of the column base.

关 键 词：外露式柱脚 转动刚度 锚栓 门式刚架 半刚性节点 

分 类 号：TU391[建筑科学—结构工程]