倒T形型钢-混凝土组合结构受弯性能试验研究

Experimental Investigation of Flexural Capacity of the Inverted T-shaped Steel-concrete Composite Beams

为了研究倒T形型钢 混凝土组合结构 (地下组合墙体系统 ,即CBS)的抗弯受力性能 ,以剪切连接度、U形补助连接钢筋、栓钉长度、受拉钢筋及墙体厚度作为主参变量 ,进行了 1 1根两跨型钢 混凝土组合梁的试验研究。研究结果发现U形补助连接钢筋及栓钉的附加长度明显地改善了结构的延性 ,墙体厚度及受拉钢筋的增大提高了结构的刚度和强度。并且验证了倒T形型钢 混凝土组合结构的跨中极限抗弯承载力计算可以直接利用一般型钢

Kim Seung Hun Seo Soo Yeon Lee Li Hyung The flexural capacity of inverted T shaped composite basement wall which consists of H shaped steel beam and RC wall is evaluated.Stud or U\|shaped bar connectors are used to combine those members.Ten specimens with parameters such as the composite ratio,detail of connection,length of bolts and stiffness of wall are designed and tested.In addition,a pure RC wall specimen is designed for comparison.Test specimens showed high initial stiffness when the magnitude of shear stud in the connection is increased.However,the ultimate strength was not changed.It was shown that U\|shaped bar and longer shear stud in the connection improved the deformation capacity of specimens.Also,the ultimate strength of composite basement wall combined H shaped steel beam and RC wall by stud or U\|shaped bar connector turned out 2 8 times higher than that of pure RC wall specimen.