【摘要】 钢筋混凝土结构是一种广泛使用的结构形式,其耐久性设计是一个十分迫切需要解决的问题。在一般大气环境下,混凝土碳化和钢筋锈蚀是钢筋混凝土结构耐久性的重要影响因素,在其作用下结构的抗震承载力发生变化,因此可将结构抗震承载力因素引入结构的耐久性设计中。采用改进能力谱法,以罕遇地震下薄弱层的弹塑性层间位移作为结构承载力指标,研究了一般大气环境下钢筋锈蚀因素对钢筋混凝土结构抗震耐久性的影响,提出了基于抗震承载力和改进的能力谱法的钢筋混凝土结构耐久性设计方法。通过一个五层钢筋混凝土结构的算例说明了验算结构抗震性能耐久行的必要性。更多还原

【Abstract】 The reinforced concrete structures are extensively used,and its durability needs to study urgently.In the general air environment,the corrosion of reinforcement and the carbonation of concrete are the important factors for the RC structure’s durability,which effect seismic resistance of the RC structures.Thus the seismic resistance should be introduced to durability design.In this paper,the weak story drift of structure subjected to rare earthquake is utilized as seismic resistance index of the structure,and the seismic evaluation of the structure considering the influence of corrosion of reinforcement is implemented by improved capacity method.Based on seismic resistance and improvement capacity spectrum method a durability design method for the RC structures is proposed,and the necessity of the durability evaluation of the structure considering its seismic resistance has been shown by an example.更多还原