A Framework for Performance-Based Wind Engineering
A Framework for Performance-Based Wind Engineering
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基于性能的风工程框架
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
S. Baldava
中科院分区：
文献类型：
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作者：
L. Griffis;Viral Patel;S. Muthukumar;S. Baldava
在传统的风工程设计中，建筑物的响应基本上处于或低于ASCE 7强度水平荷载组合下抗横向荷载系统的某些构件的第一个显著屈服点。工程师们通常不考虑推这个门槛，主要是因为没有建立框架来考虑风荷载下的非弹性行为。在承受地震荷载的建筑物中，建筑规范允许控制非弹性响应，以实现安全和经济可行的设计。允许受控非弹性响应的概念也可以扩展到受风荷载影响的细长高层建筑的分析和设计，其中动态风分量是总风荷载的重要部分。在本文中，提出了一个框架，基于性能的风力工程。概述了建筑物性能目标的选择、风危害的量化和明确考虑非线性行为的方法。所提出的方法可以应用于评估现有建筑物的性能或经济地设计新的建筑物受到风荷载。
In traditional wind engineering design, the response of a building is essentially at or below the first significant yield point in some members of the lateral load resisting system under ASCE 7 Strength Level load combinations. Engineers have generally not considered pushing this threshold primarily because there is no established framework for consideration of inelastic behavior under wind loading. In buildings subjected to seismic loads, controlled inelastic response is permitted by the building codes for a safe and economically feasible design. The concept of allowing a controlled inelastic response could also be extended to the analysis and design of tall, slender buildings subject to wind loads, where the dynamic wind component is a significant portion of the total wind load. In this paper, a framework for performance-based wind engineering is proposed. Selection of building performance objectives, quantification of wind hazards and methods for explicit consideration of nonlinear behavior are outlined. The proposed methodology can be applied to evaluate the performance of existing buildings or to economically design new buildings subjected to wind loads.