钢管混凝土桁架梁桥异形薄壁桥面板现浇施工技术研究

摘要

Ganhaizi Grand Bridge on the Ya’an-Luhu Expressway is a concrete-filled steel tube truss girder bridge with a length of 1 811 m.In connection with the mountainous area of 9 degrees seismic intensity with bad circumstance character-istics such as high mountains and precipitous paths,steep slopes,heavy wind,thick snow and changeable weather,the ar-ticle studies about cast-in-place construction technology of special-shaped thin-walled bridge deck which under the condi-tions of high altitude and small radius curve.It is focused on introducing the comparison and selection of the medium bridge deck’s construction program and its construction technology,which could be provided as a reference for the similar engi-neering.%雅泸高速公路干海子特大桥为1811 m 长的钢管混凝土桁架梁桥。针对地震烈度9度山区，山高路险坡陡、风大雪多气候多变等恶劣环境特点，对高空、小半径曲线条件下异形薄壁桥面板现浇施工技术进行了研究。重点介绍了中幅桥面板施工方案的比选及桥面板的施工工艺，对类似工程具有参考借鉴作用。