深水急流裸岩钢栈桥施工技术研究

Construction Technology of Steel Trestle on Bare Rocks in Deep Water with a Large Flow Rate

结合福平铁路乌龙江特大桥栈桥的施工,对在水深较深、水流速度较大、河床为裸岩等因素影响下的栈桥设计及施工方法进行研究。重点阐述了栈桥钢管桩基础加固形式及管桩河床面附近的锚固形式。通过RBCCE计算软件建立受力模型对栈桥管桩的受力情况进行了检算,并经过实际使用验证了栈桥的稳定性满足施工要求。

Combined with the trestle construction for Wulongjiang Extra-large Bridge of Fuping Railway,this paper discusses the design and construction method of trestle under the influences of deep water with a large flow rate,bare river bed and so on. The paper mainly expounds the reinforced form of trestle steel tube pile foundation and the anchorage form nearby the river bed surface. The stress of trestle steel tube pile is checked through establishing the loading model by the RBCCE calculation software. As a result,it is verified that the stability of the trestle meets the requirements of the construction after the practice.