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第一章预应力混凝土大跨径桥梁的设计(一)预应力钢材及其附件预应力钢材有预应力钢丝、预应力钢绞线、预应力钢筋等,适应其各自的特点,有效的采用于相应的施工法。因资料不足本公司现在还不可能对预应力钢材作清楚的分类,但对悬臂(悬拼或悬浇)施工法,采用预应力钢筋,则是压倒的多数。关于预应力钢材的质量规格,为参考起见,将日本的现行标准以及土木学会“预应力混凝土设计施工指针”中规定的质量规格、狄微达克施工法使用的预应力钢筋的质
Chapter I Design of Prestressed Concrete Long-span Bridges (I) Prestressed Steel and Its Accessories Prestressed steel is prestressed steel wire, prestressed steel wire, prestressed steel, etc., to adapt to their respective characteristics, effectively used in Corresponding construction method. Due to lack of information, it is still impossible for the Company to make a clear classification of prestressed steel. However, the use of prestressed reinforcing bars for cantilever construction (cantilevered or dumped) is overwhelming. As for the quality specifications of prestressed steel, for the sake of reference, the current Japanese standards and the quality specifications stipulated in the “Guidelines for the Design and Construction of Prestressed Concrete” of the Society of Civil Engineering, the quality of prestressed reinforcing steel used by the Diderweed Construction Method