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本文认为灯桥预应力钢筋砼V型折板延时倒塌主要是预应力筋在支座部位的保护层厚度不够,造成钢筋严重锈蚀而丧失支座锚固力所致,并提出了防治措施。
This paper believes that the delayed collapse of the V-shaped flap of the prestressed reinforced concrete bridge of the light bridge is mainly due to the insufficient thickness of the protective layer of the prestressed tendon at the support site, which results in the severe corrosion of the steel bar and the loss of the anchoring force of the support, and proposes preventive measures.