山谷斜拉桥前支点挂篮拆除技术

Demolition Technique of Front Fulcrum Hanging Basket of Cable-stayed Bridge in the Valley

文章根据某特大桥斜拉桥所处的山谷地形,对边跨挂篮采取千斤顶整体牵引下放,落地后分块拆除技术;对中跨挂篮采取原位解体,通过卷扬机分块牵引下落拆除技术。实践证明,以上技术安全可靠,经济节约,可供同类挂篮或高空重型悬吊物拆除施工参考。

According to the valley topography where the cable-stayed bridge locates,side-span hanging basket is lowered integrally by using the lifting jack and demolished partly after it reaches the ground,while middle-span hanging basket is dropped by electric hoister after being disintegrated in situ. It proves that this technique is safe, reliable and inexpensive, which would be a good reference for the demolishment of similar hanging baskets and other heavy suspensions in high attitude.