沪宁高速铁路下承式系杆拱桥钢管拱肋施工

Steel Tube Rib Construction for Through-type Tied Arch Bridge in Shanghai-Nanjing High-speed Railway

钢管混凝土拱肋由于同时解决了拱桥高强度材料的应用和少支架施工的两大难题,在桥梁上得到迅速的发展。通过沪宁高速铁路跨高速公路特大桥工程实例论述了下承式系杆拱桥钢管混凝土拱肋的施工工艺、施工流程和施工难点。实践证实,采用这套施工技术,既保证了工程质量,又缩短了工期。

Concrete-filled steel tube rib solved two problems of the application of high-strength material in arch bridge and the construction with less supports, which has been rapidly developed in bridge. Through the example of large bridge across highway in Shanghai-Nanjing High-speed Railway, the construction technology,process and difficulties of concrete-filled steel tube rib for through-type tied arch bridge are discussed. It been proven from practice that the construction technology not only ensured engineering quality, but also shortened construction period.