摘要
规范 [1]给出了预应力直线钢筋的锚固损失σl1的计算公式 ,并指出 ,后张法构件预应力曲线钢筋的锚固损失σl1应根据预应力曲线钢筋与孔道壁之间反向摩擦影响长度lf 范围内的钢筋变形值等于锚具变形和钢筋内缩值的条件确定 但规范给出的相应计算公式是预应力钢筋为圆弧形曲线 ,对预应力钢筋为抛物线形的曲线未给出相应公式 遵照规范 。
The formula of anchorage loss of the linear prestressed steel reinforcement is presented in norm[1];anchorage loss σ l 1 of the curvilinear prestressed steel reinforcement about secondly tensed component should be determined on the basis of the principle in which the value of steel reinforcement deformation equals to that of anchorage deformation and steel reinforcement shrinkage within the limit of influence length l f of reverse friction between the curvilinear prestressed steel reinforcement and the tube wall.But the formula presented in the norm is applied to the circular prestressed steel reinforcement .The formula on the parabolic prestressed steel reinforcement is not presented.In accordance with the norm,the formula on the parabolic prestressed steel reinforcement anchorage loss is deduced.
出处
《南昌大学学报（工科版）》
CAS
2001年第2期35-38,共4页
Journal of Nanchang University(Engineering & Technology)
关键词
预应力
锚固损失
反向摩擦
连续梁
prestress
anchorage loss
reverse friction
continuous beam
