拉浪水电站弧形钢闸门检测计算及粘钢加固

Test, calculation and reinforcement of the steel arch-gate of Lalang Hydropower Station

拉浪水电站溢流坝段露顶弧形钢闸门的主梁、纵隔板、支臂的应力值都超过了允许应力,需要加固处理。加固方案采用"点焊灌胶粘钢法"。该方法是先在粘贴的钢板周边与原钢板点焊,并用YZJ 1结构胶密封,预设灌胶嘴及排气孔,然后用0 3MPa的压力向粘钢与原钢板之间预留的1～2mm的间缝中灌注YZJ 3胶,待72h固化即可受力使用。新老钢板粘结密实度达100%,加固后实测应力降幅都在50%左右,满足了应力要求。"点焊灌胶粘钢法"是一创新,通过在拉浪水电站弧门加固的大量实测结果证明,该方法可靠并可保持结构不变形。

The stresses in the main beam, longitudinal partition board and arm of steel archgate for the overflow dam of Lalang Hydropower Station all surpass their allowance value, so they must be reinforced The method of point solderstick steel plate is adopted in the reinforcement, that is, first soldering steel plate with the original steel boundary, then using glue YZJ1 to seal and injecting YZJ3 glue with 03MPa Through the test, this reinforcement method is credibility and can ensure nondistortion of structure