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把预应力束配置在混凝土结构截面外部的方式称为外拱索预应力法。采用这种方法,可以减小翼缘宽度,减轻自重,这一事实已在国外的诸多工程实践中得到了证实。一般在悬臂梁中,常用下列两种预应力束:①悬臂梁施工
The prestressed beam configuration in the concrete structure of the cross-section of the way known as the outer arch prestressed method. The fact that this method can reduce the width of the flange and reduce the self-weight has been confirmed in many engineering practice abroad. Generally in the cantilever, the following two prestressed beams are commonly used: ① cantilever construction