FRP (fiber reinforce plastic) tube-concrete-steel tube combined tube tower and segmented construction method thereof

Abstract

The invention relates to an FRP (fiber reinforce plastic) tube-concrete-steel tube combined tube tower comprising an inner steel tube, an FRP outer tube and a concrete layer, wherein the inner steel tube is formed by connecting a plurality of steel tube segments, the FRP outer tube is formed by connecting a plurality of FRP tube segments, and the concrete layer is poured between the inner steel tube and the FRP outer tube; the adjacent steel tube segments of the inner steel tube are connected by a steel tube adapting piece; the steel tube adapting piece is positioned on the outer surface of the inner steel tube; the adjacent FRP tube segments of the FRP outer tube are connected by an FRP adapting piece positioned on the inner surface of the FRP outer tube; and the steel tube adapting piece and the FRP adapting piece are both embedded in the concrete layer. The invention also provides a segmented construction method for the FRP tube-concrete-steel tube combined tube tower. When the combined tube tower or similar tower-shaped or columnar structure is implemented, long tubes and large prefabricated concrete parts do not need to be transported The combined tube tower has high construction speed, the steel tube adapting piece and the FRP tube adapting piece can also serve as shear keys between the concrete layer and two tubes and the stiffening ribs of two tubes, thus improving the structural property of the combined tube tower. 本发明涉及一种FRP管-混凝土-钢管组合管塔，包括由多个钢管节段连接构成的钢内管、由多个FRP管节段连接构成的FRP外管以及浇筑在两者之间的混凝土层；钢内管的相邻钢管节段之间通过钢管连接件进行连接，钢管连接件位于钢内管的外表面；FRP外管的相邻FRP管节段之间通过FRP连接件进行连接，FRP连接件位于FRP外管的内表面；且钢管连接件和FRP连接件均内嵌于所述混凝土层中。本发明还提供了该FRP管-混凝土-钢管组合管塔的分节段建造方法。实施本发明及类似的塔状或柱状结构无需运输长管和大型预制混凝土部件，建造速度快，且钢管连接件和FRP管连接件还可作为混凝土层和两管之间的剪力键以及两管的加劲肋，提高了组合管塔的结构性能。