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1引言伴随我国经济的迅猛发展,给交通运输行业带来了巨大的挑战,尤其是在铁路运输方面,其路线和规模都在不断增长。对于铁路的建设,跨铁路箱梁架设施工是铁路工程中的重要部分,也是保证铁路交通的快捷与稳定性能的基础条件,因此对跨铁路箱梁架设施工技术的优化与完善就显得很有必要。2跨铁路箱梁架设施工的干扰条件影响跨铁路箱梁架设施工的因素包括温度应力、施工工艺以及施工材料等。温度应力能够使混凝土结构产生裂痕和变形等现象,这样
1 Introduction With the rapid economic development in our country, enormous challenges have been brought to the transportation industry. In particular, its railway line has been growing in size and route. For the railway construction, the construction of the girder across the railway is an important part of the railway engineering and also the basic condition for ensuring the quick and stable performance of the railway traffic. Therefore, it is necessary to optimize and perfect the construction technology of the girder-girder construction across the railway . 2 Interfering Conditions for Erection of Box Girders across Railway The factors affecting the erection of girders across railway boxes include temperature stress, construction technology and construction materials. Temperature stress can cause cracks and deformation of concrete structures and other phenomena, so