سیستمهای دمپری یکپارچه در ساختمانهای بلند
ترجمه نشده

سیستمهای دمپری یکپارچه در ساختمانهای بلند

عنوان فارسی مقاله: طراحی مبتنی بر عملکرد با ارزیابی هزینه چرخه زندگی برای سیستمهای دمپری یکپارچه در ساختمانهای بلند تحت تاثیر باد
عنوان انگلیسی مقاله: Performance-based design with life-cycle cost assessment for damping systems integrated in wind excited tall buildings
مجله/کنفرانس: سازه های مهندسی – Engineering Structures
رشته های تحصیلی مرتبط: مهندسی عمران
گرایش های تحصیلی مرتبط: سازه
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus – Master Journals List – JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.engstruct.2019.04.009
دانشگاه: Department of Civil, Construction and Environmental Engineering, Iowa State University, United States
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2019
ایمپکت فاکتور: 3.604 در سال 2018
شاخص H_index: 114 در سال 2019
شاخص SJR: 1.628 در سال 2018
شناسه ISSN: 0141-0296
شاخص Quartile (چارک): Q1 در سال 2018
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 14
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E12440
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1. Introduction


2. Background


3. Motion performance based-design


4. Simulation methods


5. Application of the PBD methodology on a case study building


6. Conclusions


Acknowledgement


Appendix A. Spectral approach for wind load time series simulation


References

نمونه متن انگلیسی مقاله

Abstract


The application of performance-based design (PBD) is gaining increasing interest in the wind engineering community. A popular design approach to minimize wind induced vibrations in flexible civil structures is to size structural stiffness and supplemental damping systems in order to restrict the motion to a given threshold for providing safety and comfort, while ensuring that structural components meet strength requirements. In this paper the PBD paradigm is extended to wind excited tall buildings equipped with motion control systems. The objective is to improve the design of damping systems under different wind events while considering maximum acceleration as performance measure. In addition, since the installation of damping devices implies additional costs (e.g., installation and maintenance costs) while it helps decreasing the costs associated with performance failure, a life-cycle analysis (LCA) is integrated in the PBD. In the LCA framework, the percentage of building occupants affected by discomfort and motion sickness caused by excessive wind-induced vibrations is considered to account for the consequences of different target performance levels. The developed PBD is applied to a 39-story building that has documented issues with excessive vibrations under wind events. The wind load is simulated as a multivariate stochastic process, in the time domain. Two passive vibration mitigation strategies are investigated: viscous and friction dampers, both designed to meet the target performance levels. LCA are conducted for the building equipped with each damper type, and benchmarked against the one without dampers. Results show that the PBD leads to a rational and economically effective approach for the design of the damping systems in wind excited tall buildings.


Introduction


Performance-based design (PBD) has shown to be an effective philosophy to create risk consistent designs within the seismic engineering community [1–۳]. In the past years, numerous attempts have been made to extend the application of PBD to other hazards such as wind load [4–۶], fire [7], vehicle collision [8,9], and seismic pounding [10]. In wind engineering, many of the proposed PBD procedures have been devoted to tall buildings, with particular focus on the serviceability limit states [11–13]. The use of passive supplemental energy damping systems to improve the performance of high-rise structures under wind load is now widely accepted [14,15]. However, a PBD methodology that integrates the design of passive damping systems in a tall building has yet to be developed. In motion engineering, the idea of PBD is to minimize structural vibrations by appropriately sizing supplemental damping systems in order to restrict the motion to a given threshold for providing safety and comfort, while designing the structural stiffness to ensure that structural components meet strength requirements [16]. This requires the development of a PBD procedure for tall buildings that includes the design of the motion control devices. Passive damping systems, such as tuned-mass damping, viscous damping, and base-isolation, are widely used to enhance the structural performance under natural hazards. Some of the attractive features of this technology are the high reliability of the devices, the robustness against possible mechanical failures, and their inherent stability. In the wind hazard case, passive damping systems are generally designed for a predominant wind speed, without considering temporal and spatial variations of the wind load throughout the life span of the structure [17–19].

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