铁路节段预制胶接拼装简支箱梁的技术特点和优势

Technical features and advantages of railway assembled simply-supported box-girder with epoxy resin joints

黄陵—韩城—侯马铁路芝水沟特大桥主桥采用19孔64 m和2孔48 m节段预制胶接拼装简支箱梁,突破了我国多年来常规采用的湿接缝节段预制拼装桥梁的限制。本文结合芝水沟特大桥节段预制胶接拼装简支箱梁设计、施工,阐述了节段预制现场拼装梁的分类和应用情况、构造特点、设计特点、工艺特点及优势所在,可对后续节段拼装桥梁的设计和施工起到指导性作用。

Zhishuigou super-large bridge on Huangling-Hancheng-Houma Railway applies 19 × 64 m ＋ 2 × 48 m simply-supported segmental preeast box-girders.These segments are assembled with epoxy resin instead of the traditional wet joint.Design and construction of Zhishuigou super large bridge are introduced in this paper.The categorization and application of preeast segment,as well as its structure,design,production and advantages,are presented.These may be used as guidance for design and construction of the same type bridge.