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Performance-based wind design of tall buildings: concepts, frameworks, and opportunities

机译：基于性能的高层建筑风设计：概念，框架和机遇

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One of the next frontiers in structural wind engineering is the design of tall buildings using performance-based approaches. Currently, tall buildings are being designed using provisions in the building codes and standards to meet an acceptable level of public safety and serviceability. However, recent studies in wind and earthquake engineering have highlighted the conceptual and practical limitations of the code-oriented design methods. Performance-based wind design (PBWD) is the logical extension of the current wind design approaches to overcome these limitations. Towards the development of PBWD, in this paper, we systematically review the advances made in this field, highlight the research gaps, and provide a basis for future research. Initially, the anatomy of the Wind Loading Chain is presented, in which emphasis was given to the early works of Alan G. Davenport. Next, the current state of practice to design tall buildings for wind load is presented, and its limitations are highlighted. Following this, we critically review the state of development of PBWD. Our review on PBWD covers the existing design frameworks and studies conducted on the nonlinear response of structures under wind loads. Thereafter, to provide a basis for future research, the nonlinear response of simple yielding systems under long-duration turbulent wind loads is studied in two phases. The first phase investigates the issue of damage accumulation in conventional structural systems characterized by elastic-plastic, bilinear, pinching, degrading, and deteriorating hysteretic models. The second phase introduces methods to develop new performance objectives for PBWD based on joint peak and residual deformation demands. In this context, the utility of multi-variate demand modeling using copulas and kernel density estimation techniques is presented. This paper also presents joined fragility curves based on the results of incremental dynamic analysis. Subsequently, the efficiency of tuned mass dampers and self-centering systems in controlling the accumulation of damage in wind-excited structural systems are investigated. The role and the need for explicit modeling of uncertainties in PBWD are also discussed with a case study example. Lastly, two unified PBWD frameworks are proposed by adapting and revisiting the Wind Loading Chain. This paper concludes with a summary and a proposal for future research.
机译：结构风工程中的下一个边界之一是使用基于性能的方法设计高层建筑。目前，高层建筑正在使用建筑规范和标准中的规定设计，以满足可接受的公共安全和可维护性。然而，最近的风暴和地震工程研究突出了面向代码设计方法的概念和实践局限性。基于性能的风设计（PBWD）是当前风设计方法的逻辑扩展，以克服这些限制。在PBWD的发展中，我们在本文中，我们系统地审查了该领域的进展，突出了研究差距，为未来的研究提供了基础。最初，提出了风装载链的解剖学，其中重点是艾伦G.达文波特的早期作品。接下来，提出了设计用于风负荷的高层建筑的当前实践状态，并突出显示其限制。在此之后，我们批判地审查了PBWD的发展状态。我们关于PBWD的审查涵盖了对风负荷下结构的非线性响应进行的现有设计框架和研究。此后，为未来的研究提供基础，在两个阶段中研究了在长持续时间湍流风荷载下的简单屈服系统的非线性响应。第一阶段调查以弹性塑料，双线性，捏，降解和滞后模型为特征的常规结构系统中的损伤积累问题。第二阶段介绍了基于联合峰值和残余变形需求为PBWD开发新的性能目标的方法。在这种情况下，提出了使用Copulas和核密度估计技术的多变化需求建模的效用。本文还基于增量动态分析的结果提出了连接的脆弱性曲线。随后，研究了调谐质量阻尼器和自定心系统控制在控制风激的结构系统中损坏的累积方面的效率。案例研究示例还讨论了PBWD中不确定性明确建模的作用和需求。最后，通过调整和重新探测风装载链来提出两个统一的PBWD框架。本文汇总了摘要和未来研究的提案。

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