钢管混凝土桥墩在逆作法施工中的研究与应用

Study and Application of Concrete Filled Steel Tubular Pier in Inverse Method Construction

以一座车行天桥为例,研究与传统正作法施工相反的逆作法施工,利用空间有限元分析软件Midas Civil建立两种工法对应的混凝土、钢管混凝土桥墩有限元模型,对比分析两种工法在施工工序、结构受力、工程造价方面的不同。结果表明钢管混凝土桥墩配合逆作法施工在类似项目中优势明显,应用前景广阔,值得大力推广。研究与分析的方法和结论,可供同类或相近项目借鉴与参考。

Based on an overpass, the construction of the inverse method which is opposite to the traditional method was studied. By using the Midas Civil, a spatial finite element analysis software, the finite element models of concrete pier and concrete filled steel tubular pier corresponding to the inverse method and traditional method were established to compare and analyze the differences between the two methods in terms of construction procedure, structural stress and project cost. The results show that, the construction of concrete filled steel tubular pier combining with the inverse method has obvious advantages in similar projects and broad application prospect,which is worthy to being promoted. The method and conclusion of the study and analysis can provide reference for similar projects.