客运专线铁路非标准线间距简支箱梁设计研究

客运专线铁路采用方向别引入引出车站时,桥梁设计将出现大量非标准线间距简支箱梁,其设计与批量预制问题亟待研究。以连镇铁路线间距5.3 m简支箱梁为例,简要介绍梁部的设计情况,重点分析线间距增大引起的吊梁、架梁等一系列问题及解决措施,实现非标梁与线间距4.6 m标准梁的统一设计与施工。研究结果表明:小幅调整既有的设计图纸和施工设备,能够满足非标准线间距简支箱梁的使用需求。

Design and Research of Simply Supported Box Girders with Nonstandard Line Space on Dedicated Passenger Railway Line

When direction schemes is used to allow dedicated passenger railway line to come into and get out of a station,a large number of imply supported box girders with nonstandard line space are required in the bridge design and the issues involved in the design and batch prefabrication of the box girders are urgent to be studied. Based on simply supported box girders with 5. 3 m line space inLianyungang-Zhenjiang railway,this paper introduces the design of girders and focuses on the problems such as lifting and erecting girders due to line space increase in order that the unified design and construction of nonstandard girders and standard girders with 4. 6 m line space can be realized. The results show that it could meet the usage requirements of simply supported box girders with nonstandard line space to apply modest changes to existing design drawings and construction equipment.