预应力混凝土框架梁设计计算

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1、预应力混凝土框架梁设计计算书二00六年四月1目录1.设计荷载与内力计算.............................................................................................11.1梁截面几何特征.............................................................................................11.2柱截面几何特征..................

2、...........................................................................11.3荷载标准值.....................................................................................................21.4内力计算....................................................................

3、.....................................22.梁中预应力筋和普通钢筋的估算.........................................................................52.1预应力筋线形的采用.....................................................................................52.2预应力筋的估算.........................

4、....................................................................52.3普通钢筋估算.................................................................................................63.第一批预应力损失计算.........................................................................

5、................73.1孔道摩擦损失σ..........................................................................................7l2σ3.2锚具内缩损失l1：.......................................................................................73.3第一批预应力损失σ：...........................

6、....................................................8lI4.施工阶段抗裂验算.................................................................................................94.1第一批预应力损失完成后的预应力等效荷载...........................................94.2第一批预应力损失完成后的预应力综合弯矩..........

7、.................................94.3施工阶段恒载作用下的弯矩.....................................................................124.4施工阶段正截面抗裂验算结果.................................................................135.第二批预应力损失计算..............................................

8、.........................................15σ5.1钢筋应力松弛损失l4：..........................................................................15σ5.2混凝土收缩徐变引起的预应力损失l5..................