Composite beam and construction method

Abstract

The invention discloses a composite beam and a construction method thereof, the composite beam comprises the following components: a composite inner pipe, the composite inner pipe comprises fibers arranged along the extension direction of the composite inner pipe in a pultrusion manner; the composite outer pipe comprises fibers which are wound around the central axis of the composite outer pipe; the composite material outer pipe is arranged outside the composite material inner pipe in a sleeving mode, a filling cavity is formed between the composite material inner pipe and the composite material outer pipe, and the filling cavity is used for being filled with concrete; and the shearing force connecting piece is located in the filling cavity and connected to the composite material inner pipe. The composite inner pipe can be eccentrically arranged towards the tension side of the composite beam relative to the composite outer pipe. The composite section bar-concrete composite beam has good corrosion resistance, and can solve the problems that the ductility of the composite section bar-concrete composite beam in the prior art is insufficient, and the overall shear resistance of the composite section bar-concrete composite beam is poor due to insufficient transverse bearing capacity of the composite section bar. 本发明公开了一种组合梁及其施工方法，该组合梁包括以下部件：复材内管，所述复材内管包括沿所述复材内管延伸方向拉挤设置的纤维；复材外管，所述复材外管包括绕管中轴线缠绕设置的纤维；所述复材外管套置在所述复材内管外，所述复材内管与所述复材外管之间形成填充腔，所述填充腔用于填充混凝土；剪力连接件，所述剪力连接件位于所述填充腔内，并连接在所述复材内管上。所述复材内管可相对于复材外管朝所述组合梁的受拉侧偏心设置。本发明具有良好的耐腐蚀性，且能解决现有技术中的复材型材‑混凝土组合梁延性不足，以及由于其中复材型材横向承载力不足而导致的复材型材‑混凝土组合梁整体抗剪性能差的问题。