ارزیابی عملکرد لرزه‌ای قاب خمشی دوگانه با مهاربند برون‌محور دارای لینک افقی برشی و خمشی با در نظر گرفتن اثر اندرکنش خاک و سازه تحت رکورد حوزه نزدیک

گودرزی, محمد جواد; مرادی, مجید

doi:10.48301/kssa.2022.326213.1968

ارزیابی عملکرد لرزه‌ای قاب خمشی دوگانه با مهاربند برون‌محور دارای لینک افقی برشی و خمشی با در نظر گرفتن اثر اندرکنش خاک و سازه تحت رکورد حوزه نزدیک

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسندگان

¹ عضو هیئت علمی، گروه مهندسی عمران، دانشگاه فنی و حرفه ای، تهران ایران.

² دکتری زلزله، گروه مهندسی عمران ، دانشگاه صنعتی نوشیروان بابل،ایران.

10.48301/kssa.2022.326213.1968

چکیده

ارزیابی عملکرد لرزه‌ای سازه‌ها یکی از علایق و مسئولیت‌های مهندسین سازه و زلزله است. سیستم مهاربند برون‌محور به علت مقاومت، سختی و شکل‌پذیری بالایی که دارد همواره یکی از مهم‌ترین و مورد استفاده‌ترین سیستم‌های سازه‌ای محسوب شده است. این سازه‌ها معمولاً با لینک‌های افقی برشی و خمشی طراحی و اجرا می‌شوند. در این تحقیق سعی شده است تا با استفاده از تحلیل‌های دینامیکی غیرخطی پاسخ و عملکرد لرزه‌ای این سازه‌ها تحت رکوردهای حوزه نزدیک با و بدون مؤلفه قائم به همراه در نظر گرفتن اثر اندرکنش خاک و سازه بررسی شود. از این‌رو سه تیپ قاب 4، 8 و 12 طبقه طراحی و با استفاده از روش اجزای محدود به‌صورت غیرخطی در نرم‌افزار Perform-3D مدل‌سازی شده است. ماکزیمم جابه‌جایی و جابه‌جایی پسماند بام، دریفت طبقات و برش پایه این سازه‌ها به‌عنوان پارامترهای تقاضای مهندسی انتخاب و بررسی شده است. نتایج نشان داده است سازه با لینک افقی برشی پاسخ‌های به‌مراتب بهتری از قاب‌های دارای لینک افقی خمشی دارد همچنین اثر اندرکنش خاک و سازه جابه‌جایی بام را افزایش و برش وارد بر سازه را کاهش داده است.

کلیدواژه‌ها

20.1001.1.23829796.1401.19.3.22.2

موضوعات

مهندسی عمران(سازه و زلزله )

عنوان مقاله [English]

Evaluation of Seismic Performance of Dual Flexural Frame with Eccentric Bracing, Horizontal Shear and Flexural Link in Consideration of the Effect of Soil-Structure Interaction under Near Field Record

نویسندگان [English]

Mhammad Javad Goodarzi ¹
Majid Moradi ²

¹ Faculty Member, Department of Civil Engineering, Technical and Vocational University (TVU), Tehran, Iran.

² PhD in Earthquake Engineering, Department of civil engineering, Babol Noshirvani University of Technology, Iran.

چکیده [English]

Evaluating the seismic performance of structures is one of the interests and responsibilities of structural and earthquake engineers. The eccentric bracing system has always been one of the most important and widely used structural systems due to its high strength, stiffness and ductility. These structures are usually designed with horizontal shear and bending links. In this research, using nonlinear dynamic analysis, the seismic response and performance of these structures under near-field records with and without vertical components in addition to considering the effect of soil-structure interaction were investigated. Therefore, three types of frames of 4, 8 and 12 floors were designed and modeled non-linearly using the finite element method in Perform-3D software. Maximum displacement and displacement of roof residue, floor drift and base shear of these structures were selected and studied as engineering demand parameters. The results showed that the structure with horizontal shear link had much better responses than the frame with horizontal bending link. In addition, the effect of soil-structure interaction increased the roof displacement and reduced the base shear on the structure.

کلیدواژه‌ها [English]

Bending and shear link Soil
structure interaction Seismic response Vertical component effect

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