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Value based seismic design of structures using performance assessment by the endurance time method

Mirfarhadi, S. A ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1080/15732479.2020.1712436
  3. Publisher: Taylor and Francis Ltd , 2020
  4. Abstract:
  5. A framework for optimal seismic design of structures, considering maximum value as the design objective, is introduced. In this framework, the value parameter incorporates a comprehensive set of performance indicators. Decision indicators are mapped into equivalent economic values and are directly involved in the design process. This approach leads to optimal assignment of the available resources to meet infrastructure requirements. The construction cost and the risk of seismic consequences are considered as the value components. FEMA-P58 methodology is utilized in estimation of the seismic consequences including the repair cost, repair time, injuries and casualties. Endurance Time method is employed as an efficient procedure for estimating the engineering demand parameters at different seismic hazard levels. The applicability of the Endurance Time method is verified and compared to the results of Incremental Dynamic Analysis. The proposed design procedure is employed in design optimization of two multi-story buildings. Design outcomes are compared to the outcome of the conventional code-based design procedure minimizing the structural construction cost, in terms of seismic response and consequences. The value-based design approach considerably increases the total economic value of the studied structures. The code-based design in the studied cases is found substantially sub-optimal considering the maximum achievable value. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group
  6. Keywords:
  7. Earthquake engineering ; Life cycle costs ; Reliability & risk analysis ; Value-based design ; Cost benefit analysis ; Cost engineering ; Dynamic analysis ; Optimal systems ; Reliability analysis ; Repair ; Risk analysis ; Risk assessment ; Seismic response ; Structural optimization ; Endurance time methods ; Engineering demand parameters ; Incremental dynamic analysis ; Performance assessment ; Performance indicators ; Total economic values ; Seismic design
  8. Source: Structure and Infrastructure Engineering ; Volume 16, Issue 10 , January , 2020 , Pages 1397-1415
  9. URL: https://www.tandfonline.com/doi/abs/10.1080/15732479.2020.1712436