【摘要】 预应力混凝土受弯构件的挠度与预应力、荷载、混凝土徐变和收缩等有关，因此是非线性的。本文提出了求解任一时间挠度的计算方法，其中考虑了各种因素的影响，导出了混凝土徐变与收缩相关系数的实用公式和混凝土徐变和收缩时，因拉、压钢筋用量不同而引起的梁变形的曲率公式，并给出了算例，与实测比较，结果令人满意。更多还原

【Abstract】 The deflection of prestressed concrete flexural member is nonlinear, since it is a resultant of the deflections caused by the prestress, load, creep and shrinkage of the member.A method for calculating the deflection of member at any time in consideration of the influences of different factors is presented, in which the formulas for computing the correlated coefficients of creep and shrinkage as well as the formulas for computing the curvature of beam due to deflections caused by the different amounts of compression and tensile steel are derived. Numerical example is given, the analytical and experimental results are in satisfactory agreement.更多还原