以混凝土结构设计规范(GBJ10—89)为基础。建立了强力钢筋做预应力筋的预应力混凝土结构用名义拉应力控制裂缝宽度的方法。
Based on the design code of concrete structure (GBJ10-89), the paper gives the nominal tensile stress method of controlling crack width in prestressed concrete structure of punchy bars.
提出了预应力筋束分步张拉施工与荷载控制方法，以减小管壁混凝土的轴向次弯矩。
The methods are suggested to determine the tensile steps and the tensile forces of prestressed strands for decreasing the secondary bending moment along the axial of the penstock.
这种方法是以组成整座斜拉桥各部分构件的无应力几何尺寸，如斜拉索的无应力索长、钢梁的无应力线形来主导施工控制。
This method mainly control the unstress geometry size of each components of the whole cable-stayed bridge such as the unstress length of cable, unstress geometry of steel girder.
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