کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6712695 1428726 2018 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancement of seismic performance of beam-column joint connections using high performance fiber reinforced cementitious composites
ترجمه فارسی عنوان
بهبود عملکرد لرزه ای اتصالات پرتو ستون با استفاده از کامپوزیت های سیمان با مقاومت بالا فیبر تقویت شده
کلمات کلیدی
کامپوزیت سیمان تقویت شده با فیبر بالا، فیبر مصنوعی، ویژگی های مکانیکی، استحکام کششی، اتصالات پرتو ستون ستون، رفتار هیسترزیس،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
In this paper, six half-scale exterior beam-column joint connections are casted and tested under cyclic loads to investigate and evaluate the possibility of using high performance fiber reinforced cementitious composites (HPFRCC) to remove the necessity of confining (transverse) reinforcements and solve the construction problems in beam-column joints under seismic loads. Fiber reinforced cementitious materials used in this study comprises 2% volume fraction of hybrid fiber, hooked end steel fiber and hybrid macro synthetic fibers. The basic mechanical properties of HPFRCC are determined by uniaxial tension and compression tests. The hysteretic behavior, ductility, stiffness, energy dissipation, damping characteristics and cracking patterns of HPFRCC beam-column joint connections are evaluated and compared with those of normal concrete with and without special seismic requirements in joints. The test results revealed that HPFRCC connections considerably enhanced shear and flexural capacity as well as deformation and damage tolerance behavior at post-cracking stage compared to those of normal concrete at ultimate stages. Moreover, the failure mode of HPFRCC specimens changed from shear mode to flexural mode compared to the failure mode of concretes without required seismic details.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 180, 20 August 2018, Pages 665-680
نویسندگان
, ,