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我省在解放时有不少钢筋混凝土排架,为反动派所破坏,历年来继续进行了恢复改造,一般多用围堰或套筒方法施工,费时,费工,费用也高。1955年在松江养路段青泸线四号桥接桩时,为了节省经费,试用水下接桩法施工,效果很好。兹介绍如下: 经过下水探摸检查,下部尚完好,不裂缝,不弯曲,按该排架各桩损坏处在水面下60公分处,即先在水中凿去所有损坏部份,并在桩顶待接处凿毛。同
During the liberation of our province, there were many reinforced concrete bents that were damaged by the reactionaries and were continuously restored and rebuilt over the years. Construction by cofferdam or sleeve was generally more time-consuming, laborious and costly. In 1955 in Songjiang maintenance section Qinglu line IV bridge pile, in order to save money, try the underwater pile construction, the effect is very good. It is introduced as follows: After the water exploration test, the lower part is still intact, no cracks, no bending, according to the bent pile of damage in the water at a distance of 60 centimeters, which first chisel in the water all the damaged parts, To be picked up at the haircut. with