ABSTRACT

In this paper, a post-earthquake damage assessment method for 11 different structural systems is proposed. The method is mainly based on residual inter-story drift ratios of all structural elements in the building, an important response parameter due to its simplicity of measure after the earthquake. nearly 2000 test specimens representing structural elements characterized by different structural systems (walls, frames, etc.) and materials (masonry, reinforced concrete, and steel) which were tested under quasi-static cyclic loading provided more than 100,000 data points that were used to correlate the residual drift ratio and damage states in structural elements. The damage severity of each structural element was then determined based on the weighted average of each damage state’s exceedance probabilities given a residual drift ratio. The method also considers the damage propagation among different structural elements by considering the weighted average overall damage scores in structural elements concerning their load-bearing contribution. The pre-earthquake condition of the building and the level of experienced earthquake intensity is the other input parameters for the proposed method, which finally leads to the building’s overall damage score. To verify the accuracy of the proposed method’s results, an example building hit by the Ezgeleh earthquake is evaluated, and the results are compared with those of other post-earthquake damage assessment methods.

摘要

本文提出了一种针对 11 种不同结构体系的震后损伤评估方法。该方法主要基于建筑物中所有结构构件的残余层间漂移比，这是一个重要的响应参数，因为它在地震后测量简单。近 2000 个代表具有不同结构系统（墙、框架等）和材料（砖石、钢筋混凝土和钢）特征的结构元素的测试样本在准静态循环载荷下进行了测试，提供了超过 100,000 个数据点，用于关联结构元件中的残余漂移率和损伤状态。然后根据给定残余漂移比的每个损坏状态的超出概率的加权平均值确定每个结构元件的损坏严重程度。该方法还通过考虑结构元件中与其承重贡献有关的加权平均总体损伤分数来考虑不同结构元件之间的损伤传播。建筑物的地震前状况和经历的地震烈度水平是该方法的其他输入参数，最终导致建筑物的整体损坏评分。为了验证所提方法结果的准确性，对一个受 Ezgeleh 地震击中的建筑物进行了评估，并将结果与​​其他震后损伤评估方法的结果进行了比较。建筑物的地震前状况和经历的地震烈度水平是该方法的其他输入参数，最终导致建筑物的整体损坏评分。为了验证所提方法结果的准确性，对一个受 Ezgeleh 地震击中的建筑物进行了评估，并将结果与​​其他震后损伤评估方法的结果进行了比较。建筑物的地震前状况和经历的地震烈度水平是该方法的其他输入参数，最终导致建筑物的整体损坏评分。为了验证所提方法结果的准确性，对一个受 Ezgeleh 地震击中的建筑物进行了评估，并将结果与​​其他震后损伤评估方法的结果进行了比较。