各种因素作用下钢筋混凝土环形截面的徐变及弯距分析

Analyses of Creep and Bending Moment for Annular Section under Lots of Actional Factors

针对烟囱在长期荷载作用下具有徐变的特性,分析了环形截面小偏心受压构件的徐变和弯矩。建立了小偏心受压构件的徐变和弯矩的计算公式。分析了配筋率、偏心率、作用荷载大小、混凝土强度等级、相对湿度等因素对徐变和弯矩的影响,其结果供工程参考。

The creep and the bending moments of the annular section of the eccentric member were analyzed according to the characteristics in which the chimney has the creep under the long period loads. The formula with which the creep and the bending moments can be calculated, were established. The influences of factors on the creep and the bending moments, such as the steel ratio, the eccentric ratio, the quantities of the loads, the concrete grade and the relative humidity were analyzed in consideration. The results can be used as the reference for engineering.