论文部分内容阅读
张工:钢筋混凝土结构的延性与许多因素有关,除了结构类型及房屋高度外,还与我们施工单位选用材料的性能关系极大。钢筋混凝土多层框架所用材料有它的特殊性,我国建筑抗震设计规范明确指出,抗震等级为一级的框架梁、柱和节点的混凝土强度等级不宜低于C30,抗震等级为二级和三级的构件不应低于C20。纵向受力钢筋宜采用Ⅱ、Ⅲ级钢筋,箍筋宜采用
Zhang Gong: The ductility of reinforced concrete structures is related to many factors. In addition to the type of structure and the height of the house, it also has a great relationship with the performance of materials selected by our construction units. The materials used in reinforced concrete multi-story frames have its particularity. The national seismic design code for buildings clearly states that the concrete strength levels of frame beams, columns and joints with a seismic-resistance level should not be lower than C30, and the earthquake-resistant grades are Grade 2 and Grade 3 The components should not be lower than C20. Longitudinal force reinforcement should adopt II, III grade steel bars, stirrups should be adopted