Abstract

A framework for seismic life-cycle cost (LCC) evaluation is proposed for low to mid-rise framed buildings based on structural fundamental response quantities such as stiffness, strength, and ductility. The LCC is calculated using simple formulas for a basic reference model (BRM) with assumed fundamental response quantities after it is transformed into an equivalent single degree of freedom (ESDOF) system. The pushover curves of the target structure and the BRM are compared and the difference in each response quantity is related to the LCC using the set of the prepared graphs. Then, the final LCC is calculated using the LCC of the BRM and the differences in LCC due to the difference in each response quantity. The effectiveness of the proposed method is verified through comparison with the results from a rigorous method based on nonlinear time history analysis. The results of the analysis turn out to show reasonable agreement with those obtained from the rigorous method, and it is concluded that the parameterized LCC proposed in this study is an easy and practical tool for estimating LCC using fundamental response quantities of low to mid-rise buildings.

摘要

提出了一种基于结构基本响应量（例如刚度，强度和延展性）的低至中高层框架建筑地震生命周期成本（LCC）评估框架。在将基本参考模型（BRM）转换为等效单自由度（ESDOF）系统后，使用假定的基本响应量，使用简单公式为基本参考模型（BRM）计算LCC。比较目标结构和BRM的下推曲线，并使用一组准备好的图形将每个响应量的差异与LCC相关。然后，使用BRM的LCC和由于每个响应量的差异而导致的LCC差异来计算最终的LCC。通过与基于非线性时程分析的严格方法的结果进行比较，验证了该方法的有效性。分析结果表明，该方法与通过严格方法获得的结果具有合理的一致性，并且得出结论：本研究中提出的参数化LCC是使用低至中层基础响应量估算LCC的简便实用工具建筑物。