钢管混凝土管棚地道桥施工工艺探讨

Discussion of technique of concrete-filled steel tubular pipe roof underpass bridge

结合秦沈客运专线某既有箱涵改造工程,探讨了钢管混凝土管棚地道桥的施工工艺,该工艺利用遁地穿梭矛快速顶入钢管,钢管位置控制准确,可有效减少对既有线路的影响,大大提高列车限速,可以在高速铁路地道桥的施工中广泛推广。

Combined with the reconstruct of old culvert of Qinshen passenger railway, the construction technique of concrete-fiUed steel tubular pipe roof underpass bridge is discussed. Hammerhead mole is used in jacking steel tubular in the technique. And the location of steel tubular is controlled exactly. Using the technique effect on existence railway is effectually reduced, and the speed of train can be increase greatly. Accordingly the technique can be popularized in construction of underpass bridge of high-speed railway.