带肋钢板-混凝土组合结构抗裂性能研究

Research on Crack Resistance of Ribbed Steel Plate-Concrete Combined Structure

针对带肋钢板-混凝土组合结构的抗裂性能进行理论分析和结构试验,结果表明:带肋钢板-混凝土组合结构开裂弯矩较普通钢筋混凝土结构大得多,当裂缝出现后结构能更有效地抑制裂缝发展;带肋肋板区混凝土在钢板与箍筋的共同约束下可比拟为共同受力体,极限拉应变较钢筋混凝土高。

This paper conducts theoretical analysis and structural test for crack resistance of the ribbed steel plate-concrete combined structure, the results show that the cracking moment of the ribbed steel plate -concrete combined structure is much larger than conventional reinforced concrete structure, the structure can restrain development of cracks more effectively after they appear; the concrete in the ribbed plate area under the joint constraint of steel plates and stirrups can be regarded as common force body, and the ultimate tensile strain is higher than reinforced concrete.