کنترل لرزه ای سازه های معلق مدولار با توزیع عمودی
ترجمه نشده

کنترل لرزه ای سازه های معلق مدولار با توزیع عمودی

عنوان فارسی مقاله: کنترل لرزه ای سازه های معلق مدولار با توزیع عمودی بهینه پارامترهای ساختار ثانویه
عنوان انگلیسی مقاله: Seismic control of modularized suspended structures with optimal vertical distributions of the secondary structure parameters
مجله/کنفرانس: سازه های مهندسی - Engineering Structures
رشته های تحصیلی مرتبط: مهندسی عمران
گرایش های تحصیلی مرتبط: زلزله، سازه، مدیریت ساخت
کلمات کلیدی فارسی: ساختار معلق ، سیستم ابر سازه، ساختار مدولار ، بی نظمی عمودی ، کنترل لرزش غیر فعال، الگوریتم ژنتیکی چند منظوره
کلمات کلیدی انگلیسی: Suspended structure، Mega-substructure system، Modular construction، Vertical irregularity، Passive vibration control، Multi-objective genetic algorithm
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus - Master Journals List - JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.engstruct.2018.12.099
دانشگاه: Southeast University, Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Nanjing 210096, China
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: 20
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: دارد
کد محصول: E11506
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


1- Introduction


2- Modularized suspended structure, calculation model and mean square responses


3- Single-objective optimization analysis


4- Multi-objective optimization analysis


5- Time history performances


6- Discussion


7- Conclusion


References

نمونه متن انگلیسی مقاله

Abstract


Suspended building systems with vibration control features dissipate seismic energy by the interaction between their main parts and the suspended parts; they are also architecturally appealing. A modularized suspended structure has been previously proposed to overcome the fragility of its secondary structure and to enhance overall attenuation. However, the full potential of modularization is yet to be achieved via the previous configuration, especially in terms of multi-mode control. In this study, the protection effect of prefabricated modules is further harnessed in such a way that drastic vertical-irregularities of inter-story stiffness and dampers within the suspended segment are allowed. Vertical distribution vectors of structural parameters were set as the variables in genetic-algorithm optimizations, with the maximum mean square moment of the primary structure being the main objective. The results show considerably improved attenuation of responses in multiple modes instead of only the fundamental mode. In the optimized distributions, peaks of damping coefficient occur at the troughs of inter-story stiffness, but without a highly concentrated pattern. Models with different irregularity levels have well-separated Pareto fronts; this indicates that comprehensive improvement can be obtained at compromised choices. The main mechanism is that, with the well-designed irregularities, the secondary structure provides satisfactory dissipation and tuning to the primary structure in the major modes. The analysis with non-stationary excitations reveals that optimized vertical distributions further quicken the vibration decay. The time-history performance verifications and the structural uncertainty analysis are also carried out.


Introduction


Mega-substructure systems [1–14] consist of two structural parts, namely, the main part (the primary structure) and the suspended or base-isolated part (the secondary structure) which is architecturally functioning. Various forms of mega-substructure systems exist: coretube with suspended floors [1,2,7,8,14], mega-frame with suspended floors [5] or isolated floors [3,6,12], frame structure with suspended floors [10] or isolated floors [11], isolated roof [4] and inter-story isolations [9,13]. While the secondary structure delivers loads to the primary structure, the relative motion between the two parts can be harnessed to dissipate energy and reduce vibration. Mega-substructure systems possess high robustness [3,15] against parameter deviation and wide-band excitations in terms of passive vibration control and can be applied to scenarios in which regular dampers cannot perform with the highest efficiency [3]; these scenarios include systems with dominant flexural-type deformation such as core-tubes. In this kind of systems, the secondary structures interact with the primary structure over a wide frequency range, with the secondary structures being large-scale tuning masses, energy absorbers as well as spaces with attenuated accelerations. A majority of suspended building structures [1,2,5,7,8,14] belong to the category of mega-substructure systems and are architecturally appealing as the vertical members are tensioned instead of compressed, leading to reduced cross sections and, consequently, increased transparency along with reduced weights [1,8]. Additionally, a large column-free space can be easily formed in the first story [16].

  • اشتراک گذاری در

دیدگاه خود را بنویسید:

تاکنون دیدگاهی برای این نوشته ارسال نشده است

کنترل لرزه ای سازه های معلق مدولار با توزیع عمودی
نوشته های مرتبط
مقالات جدید
نماد اعتماد الکترونیکی
پیوندها