摘要
利用数值方法计算长期荷载作用对方钢管混凝土压弯构件的荷载 -变形全过程关系的影响 ,系统分析轴压比、长细比、截面含钢率、钢材和混凝土强度及荷载偏心率等因素对承载力的影响规律 ,提出考虑长期荷载作用影响时 ,方钢管混凝土压弯构件承载力折减系数的简化计算公式 ,可为工程实践提供参考。
The effect of long term loads on the all course of load-deformation relation of the concrete-filled square steel tubular beam-columns is calculated by numerical methods.Based on the theoretical model,the influence law of the axial load ratio,slenderness ratio,steel ratio,strength of the steel and the concrete,as well as load eccentricity ratio etc on the bearing capacity of the members after long-term sustained load was analyzed.Simplified calculation formula of the reduction factor of the bearing capacity of concrete-filled square steel tubular beam-columns with long-term effects considered is also suggested,which may be a reference for engineering practice.
出处
《钢结构》
2003年第5期39-41,共3页
Steel Construction
基金
福建省青年科技人才创新基金 (2 0 0 1J0 12 )
福建省教育厅科技三项基金 (K2 0 0 10 2 )
福州大学科技发展基金 [XKJ(YM ) -0 114 ]联合资助项目
关键词
方钢管混凝土
压弯构件
承载力
长期荷载
concrete-filled square steel tube beam-colmn long-term load bearing capacity
