层次分析法在既有建筑结构体系可靠性评定中的应用

The Application of AHP Method in Assessment of Existing Building Structures

用层次分析法确定构件的权重系数,提出了一种考虑构件权重的既有结构体系可靠性评定方法。以框架结构体系为例进行了结构体系可靠性等级的评定,并和《民用建筑可靠性鉴定标准》(GB5 0 2 92 - 1 999)的评价结果进行了比较分析。结果表明,所提方法能反映不同构件对结构体系可靠性的影响,评定结果和实际吻合较好。但对于高层建筑,该方法还需要进一步完善。

In this paper, the weight coefficients of structural members in a building structural system are determined based on Analytic Hierarchy Process (AHP) method, and an applicable method to assess the reliability of existing building structural systems is proposed, in which the weights of different structural members are considered. Taking frame structures as examples, the reliability grades for structural systems are assessed, using both the proposed method and the the method of Standard for Appraiser of Reliability of Civil Buildings (GB 50292-1999). Results of comparison and analysis show that the method of AHP based can reflect the effect of different structural members on the reliability of a structural system and give a more accurate assessing result. But the method needs to be deeply modified to suit for the reliability assessment of high-rise building structures.