检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
出 处:《钢结构》2011年第5期7-10,71,共5页Steel Construction
基 金:河南省教育厅自然科学研究计划项目(No.2008B560003);河南工业大学校科研基金项目(No.07XZZ024)
摘 要:基于梁柱线刚度比和半刚性节点对三阶柱计算长度的影响,通过对一榀三阶柱门式刚架的屈曲分析,得出了三阶柱计算长度系数。目前,多数厂房计算模型被简化为梁柱刚接有侧移模型,忽略梁对柱的约束及半刚性节点对柱计算长度的影响。这种简化与梁柱实际受力情况出入较大,故采用理论公式与有限元计算相结合的方法,考虑梁柱线刚度比和半刚性节点对柱子计算长度系数的作用,与以往简化模型得出的计算结果比较可知,这两种因素对三阶柱计算长度系数的影响不可忽略。Based on buckling analysis of portal rigid frames of three-stepped columns, the brief factors, the linear rigidity ratio of beam and column and semi-rigid connection , were discussed, the effective length coefficient of three-stepped columns was obtained. Now many industrial buildings were simplified as this kind of model which had lateral displacements and rigid connection between beam and eolunm. When being analysed, the influence of restrains from beam to column and semi-rigid connection were often neglected, so the results were inaccurate. The method of academic formula and finite element were used, the effective length coefficient could be recalculated refering to linear rigidity ratio of beam and column, then the result considering these two factors was obtained. So the conclusion that the effective length coefficient of three stepped column considering these two factors was preciser than before.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.190.25.53