方钢管混凝土结构应用技术研究

方钢管混凝土结构相对于钢筋混凝土结构或钢结构都有着其明显的优点。通过对梁柱组合体试件作了反复荷载试验，验证了其受力可靠性；在浇筑试件的过程中，也对其施工过程作了模拟，最后提出了新型节点的设计建议，介绍了新型节点在实际应用中的施工上步骤。

Research On Applied Technology of Square Steel Pipe Concrete Structure

Compared with steel structure and reinforced concrete structure, concrete filled rectangular steel tubular (CFRT)shares its advantage. In China, CFRT owns optimistic application prospect. To propel the application of CFRT and considering the characteristics of high rise and the state of construction technique in China, two new type of beam - column joint were designed, which accomplish the connection of CFRT columns and reinforced concrete beams and are easy to be constructed. When they are loaded, the force transfer process of the new type of joints is reasonable and simple. In this paper, four beam - column assemblages were tested under cyclic loading, and their structural behavior was testified. During the construction of the specimens, the construction process was also simulated. For the interface between steel tubular and the concrete of the joint is the key to shear force transferring, shear resistance specimen was designed. Eight specimens were tested and the shear transfer mechanism was investigated. At the end of this paper, design suggestions were put forward and the construction process of the new type of beam - column joints were proposed for the engineering application.