矩形薄壁钢管与混凝土粘结性能研究

The Research on the bonding performance between rectangular steel pipe and concrete

钢管与混凝土粘结力的存在是两种材料共同工作的基础,直接影响着结构的锚固性能和承载性能等.通过对矩形薄壁钢管与普通混凝土的粘结性能进行试验研究,并结合文献调研结果,发现矩形薄壁钢管与混凝土粘结强度随管壁厚度增大而增大,随保护层厚度和混凝土强度增大而增大,对钢管埋置长度没有影响.本研究结果对结构梁柱节点、柱脚以及剪力墙锚固设计施工有一定的指导意义,此外对需进一步开展的研究进行了展望.

The cohesive force between steel tube and concrete is the base of two materials working together.It directly influences the anchorage performance and bearing performance of the structure.Through the experimental study on the bonding performance of rectangular thin-walled steel pipe and ordinary concrete,and combining the research results of literatures.The study shows that:The bonding strength of hollow steel tube and the concrete is enlarged with the thickness of pipe wall,the thickness of the protective layer and the Concrete density,but the embedment length of the steel pipe is not affected.These research results are of certain guiding significance for the design and construction of beam-column joints,column feet and shear wall anchorage.In addition,the further research was prospected.