预应力混凝土叠合构件的收缩徐变微差分析

Differential analysis of shrinkage and creep in composite prestressed concrete beams

本文采用按龄期调整的有效模量 ,并根据静定杆件中混凝土收缩徐变引起的任一截面上的应力变化是自相平衡的这一原理 ,推导出预应力叠合构件收缩徐变微差进行分析的公式 .文末附计算实例 .

In this paper,in terms of the self equilibrium principle of differential stresses,the formula is deduced to calculate differential stresses.Time dependent stresses of any section of composite concrete members may be calculated with the age adjusted effective modulus.An example is illustrated in detail.