鋼筋混凝土建築物耐震修復性能評估方法與應用

A Risk-Based Estimating Method for the Lifetime Reparability of an RC Building Damaged by Earthquakes

本研究目的主要以鋼筋混凝土建築物為對象提出其使用期間內耐震修復性能評估方法。除考量建築物之結構性能不確定性外，依泊松過程與地震危害度曲線模擬其使用期間內可能遭遇之地震大小與發生時間，結合地震損傷模式以量化其耐震修復性能。本文中實例研究亦將耐震修復性能評估應用於補強工法效益分析與初步耐震設計規劃，以了解其實用性。未來可藉此一評估使建築物所有者或使用者了解其設定使用期間內之修復性能以便擬定最佳資產管理策略。

This work assesses seismic damage to a reinforced concrete (RC) building using a simplified novel method that considers the hazard curve of response spectral acceleration of a specified site. Moreover, we assume the time earthquake events occur follows a Poisson process when analyzing the cumulative probability curve of lifetime repair costs for seismic damage in an RC building's service life. The mean value of lifetime seismic repair costs is then regarded as an index representing building reparability. Via this estimation procedure, the mean value of lifetime seismic repair costs and initial construction cost of a selected building can also be used to help building owners manage their assets. According to mean values of lifetime seismic repair costs in terns of ultimate ductility ratios and yielding base shear forces for the single degree of freedom system of an RC building obtained by the proposed method, one can consider seismic codes and the required lifetime reparability performance in the preliminary seismic design stage for a building.