ارزيابي لرزه اي مدل اتصال تير فولادي به ستون بتني از نوع ستون ميانگذر

Seismic Evaluation of the Model of Steel Beam Connection to RC Column as a Cross Column Type

سيستم هاي فولادي متشكل از ستون هاي بتني و تيرهاي فولادي (Reinforced Concrete column to Steel beam connection) چند سالي است كه به عنوان يك سيستم سازه اي مطرح گرديده اند. اين سيستم با تركيب بهينه عناصر سازه اي فلزي و بتني از محاسن هر دو سيستم بهره مي برد. اين اتصالات بر دو نوع مي باشند كه شامل اتصالات با تير ميانگذر و اتصالات با ستون ميانگذر مي باشند. در اين تحقيق ابتدا به مطالعه كارهاي پيشين پرداخته و سپس يك نمونه از اين اتصالات كه مدل آزمايشگاهي آن توسط Isao Nishiyama and Hiroshi Kuramoto به انجام رسيد ، در نرم افزار المان محدود ABAQUS مدلسازي و عملكرد لرزه اي اتصالات RCS تحت بارهاي رفت وبرگشتي و بارگذاري يكنواخت مورد بررسي قرار گرفت. پس از صحت سنجي مدل المان محدود٬يك مطالعه پارامتري (بررسي ضخامت پانل فولادي جان در ناحيه اتصال، بررسي ضخامت ورق پوششي و غيره.) صورت گرفت و در پايان پارامترهاي تاثيرگذار بر رفتار اين اتصال و كارامدي آنها مورذ ارزيابي قرار گرفت.

Steel systems consisting of concrete columns and steel beams (reinforced concrete column to steel beam connection) have been proposed for many years as a structural system. It combines the optimal combination of steel and concrete structural elements with the benefits of both systems. These connections are of two types, including connection joints through beams and cross-column joints. In this study, we first studied the previous work, and then an example of these joints, which was performed by Isao Nishiyama and Hiroshi Kuramoto, was used in ABAQUS limited software software for modeling and seismic performance of RCS connections under continuous loading and back and forth loadings were investigated. After verifying the finite element model, a parametric study (thickness measurement of the webs steel panel in the connection area, the thickness of the coating sheet, etc.) was carried out and finally, the parameters affecting the behavior of this connection and their efficiency were evaluated.