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Performance-based seismic analysis and design of suspension bridges

机译：基于性能的悬索桥地震分析与设计

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This paper presents a performance-based seismic analysis and design of a large suspension bridge, the new Tacoma Narrows Parallel Crossing in the State of Washington. The scope of the project included establishment of design criteria, extensive analysis and validation of the design. The analysis was performed using detailed three-dimensional models that included geometric and material non-linearity. The target post-earthquake level of service was verified using stress, deformation and ductility criteria. In the absence of well-established criteria, which relate the structural response of tower shafts to specific levels of performance, capacity analyses were performed to demonstrate that the design fulfills the performance objectives. The seismic analysis and design of this bridge was reviewed throughout the design process. An independent check team also performed separate analysis and validation of the design. Thus, this bridge constitutes an example of a large-scale design project where the performance-based seismic design procedures underwent rigorous assessment. This work demonstrated that the performance-based approach for seismic design is an appropriate way for designing earthquake-resistant structures. Further data that relate the structural response with the performance objectives are necessary.
机译：本文介绍了基于性能的地震分析和大型悬索桥的设计，这是华盛顿州的新塔科马海峡平行平交道口。该项目的范围包括设计标准的建立，设计的广泛分析和确认。使用包含几何和材料非线性的详细三维模型进行了分析。使用应力，变形和延性标准验证了地震后的目标服务水平。在缺乏将塔架竖井的结构响应与特定性能水平相关联的公认标准的情况下，进行了容量分析，以证明该设计达到了性能目标。在整个设计过程中都对该桥的地震分析和设计进行了审查。一个独立的检查团队还对设计进行了单独的分析和验证。因此，这座桥构成了大型设计项目的一个示例，其中基于性能的抗震设计程序经过了严格的评估。这项工作表明，基于性能的抗震设计方法是设计抗震结构的合适方法。需要将结构响应与性能目标相关联的更多数据。

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