跨中带冷缝钢筋混凝土梁抗弯性能的试验研究

Flexural performance of RC beams in central section with inside interface

试验研究了跨中带冷缝钢筋混凝土梁的抗弯性能。着重分析了形成冷缝的两部分混凝土时间间隔对试验梁的裂缝、应变、挠度、延性、开裂荷载和极限荷载的影响。结果表明,试验梁的纯弯段横截面应变仍符合平截面假定;形成冷缝的时间间隔对试验梁的开裂荷载、挠度、延性有不同程度的影响;而对极限荷载的影响有限。

Flexural performance of RC beams in central section with inside interface was experimentally investigated.The failure mechanism on development of crack, strain, ductile behavior, flexibility and flexural capacity, of all RC beams with inside interface for different intervals, is significantly analyzed.The results indicate that the cross-section of pure bending remains consistent with contingency-section assumption;different intervals of inside interface has diverse influence on the cracking capacity, flexibility, ductile behavior, but affect the terminal load finitely.