Seismic Fragility and Retrofit of Non-Ductile Reinforced Concrete Structures using New Technologies

非延性钢筋混凝土结构的地震易损性和改造采用新技术摘要本项目将解决新技术的适用性，即补充被动耗能系统（EDS）的非延性钢筋混凝土（NDRC）结构的改造。 将证明各种电子数据交换替代办法的有效性，并进行比较研究。 这项研究将根据1999年土耳其（8月17日，马尔马拉和11月12日，杜兹采）地震期间实际观察到的损害情况进行，并将与土耳其的研究人员和工程师合作，汇编1999年土耳其地震的损害数据。 受损钢筋混凝土结构的选定数据将被用来开发现实的计算模型，使用非弹性结构分析软件IDARC，并开发从观察到的结构响应的统计脆弱性信息。 将根据既定的性能标准，对摩擦装置、金属装置、粘性装置和重新定心装置等几种替代EDS系统进行改造设计。 这一部分的研究将允许直接和全面的比较所有考虑EDS系统的有效性。总体而言，这项研究将提供有价值的信息，合理量化的损失减少通过脆弱性的变化。 脆弱性曲线的评估变化将允许使用EDS同时考虑所有影响参数，即地震危险性，地震需求和结构的能力极限状态，对建议的改造解决方案的敏感性进行立即评估。

Seismic Fragility and Retrofit of Non-Ductile Reinforced Concrete Structures using New TechnologiesAbstractThis project will address the applicability of new technologies, namely supplemental passive energy dissipation systems (EDS) for the retrofit of non-ductile reinforced concrete (NDRC) structures. The effectiveness of various EDS alternatives will be demonstrated and comparative studies will be performed. This study will be carried out based on the actual observed damage during the 1999 Turkey (August 17, Marmara and November 12, Duzce) earthquakes.In collaboration with researchers and engineers in Turkey, damage data from the 1999 Turkey earthquakes will be compiled. Selected data on the damaged reinforced concrete structures will be utilized to develop realistic computational models using the inelastic structural analysis software IDARC, and to develop fragility information from the statistics of the observed structural response. Retrofit design of several alternative EDS systems such as friction devices, metallic devices, viscous devices and re-centering devices will be carried out according to established performance criteria. This part of the study will allow a direct and comprehensive comparison of the effectiveness of all the considered EDS systems.Overall, this study will provide valuable information to the rational quantification of loss reduction through fragility changes. The assessed change of fragility curves will allow immediate evaluation of the sensitivity of suggested retrofit solutions using EDS simultaneously considering all the influencing parameters, i.e. seismic hazard, seismic demand, and the capacity limit states of structures.