钢筋混凝土偏压杆件非弹性稳定的极限承载力分析

钢筋混凝土偏压杆件的非弹性稳定验算在各国设计规范中至今仍属空缺。本文从杆件非弹性稳定的概念出发 ,讨论了钢筋混凝土偏压杆件二阶效应强度问题与二阶效应稳定问题的联系和区别。利用经过试验验证的计算机分析程序识别了影响这类杆件非弹性稳定极限承载力的主要参数 ,并经系列计算给出了各参数的影响规律。在此基础上提出了能较准确反映这些规律的极限承载力计算公式。

Ultimate Load Analysis of Non-elastic Stability of RC Eccentrically Compressed Member

Up to now the verification method of non-elastic stability of eccentrically compressed RC member is not given in Standards of countries all over the world. Based on the conception of non-elastic stability of the members, this paper discussed the connection and distinction between the strength of second order effect and the stability of second order effect. By using the computer analysis program verified by experiments, the main factors influencing the ultimate load of non-elastic stability were found and the laws of the factor's influence were given through series of calculations. Based on the laws, the ultimate load calculation formula is developed.