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先张法施工名词解释

更新时间: 2020-11-19 00:00:00     

先张法施工,是指在浇筑混凝土构件之前,张拉预应力筋,将其临时锚固在台座或钢模上,然后浇筑混凝土构件,待混凝土达到一定强度(一般不低于混凝土强度标准值的80%),预应力筋与混凝土间有足够粘结力时,放松预应力,预应力筋弹性回缩,借助于混凝土与预应力筋间的粘结,对混凝土产生预压应力。先张法多用于预制构件厂生产定型的中小型构件。

关键词: 施工 名词 解释

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