摘要
计算长度系数法仍是结构稳定验算的最常用的方法,用该法可避免复杂的整体结构的稳定计算,该法的核心是确定受压柱的计算长度,对此《钢结构设计规范》给出了一些相应的计算公式和表格,但这些公式和表格由于一些特定的假定有一定的适用范围,不适用于特殊情况下的柱的计算长度确定(不通用),对此该文对单根柱在各种不同约束情况下的计算长度系数进行了推导,并绘制成图表,这些图表不仅涵盖了规范公式和表格能求解的规则情况,而且还能确定非规则情况下柱的计算长度系数,图表使用方便、快速和直观。
The effective length factor method is still the most commonly used method for the stability calculation of a steel structure.The method avoids the complicated stability analysis on an overall structure and the core of the method is to determine the effective length of compression columns.In this regard,some formulas and tables are given in norms of Code for Design of steel structures,but the application of the formulas and tables is limited because of some assumptions,and it cannot be used to determine the effective length of columns in special cases(it is not universal).Therefore,the formulas and chart methods for determining the effective lengths of columns with different constraints are derived and made respectively in the paper.The chart methods can not only be used in regular cases in the above mentioned norms,but also in special cases.In addition,the use of chart methods is very easy and quick.
出处
《工程力学》
EI
CSCD
北大核心
2014年第8期154-160,174,共8页
Engineering Mechanics
基金
国家自然科学基金项目(51268022)
关键词
计算长度系数
图表法
框架柱
等效柱
稳定计算
effective length factor
chart method
frame columns
equivalent columns
stability calculation
