چکیده مقاله
In this study, the nonlinear behavior of reinforced concrete beams was investigated to evaluate the plastic hinge behavior, with a focus on the effects of reducing or eliminating the compressive reinforcement Two beam specimens, including a conventional reinforced concrete beam and a composite beam, were analyzed The two point loading condition was converted into a uniformly distributed load applied at mid span, and both beams were subjected to this uniform line load Numerical analysis was performed using the ABAQUS software to examine the effects of compressive reinforcement reduction or removal on the formation and propagation of plastic hinges Three different configurations were considered for the compressive reinforcement In the first configuration, the compressive reinforcement was completely removed; in the second configuration, it was reduced to two 8 mm diameter bars; and in the third configuration, it was reduced to two 6 mm diameter bars The numerical results indicated that the reduction of compressive reinforcement had a significant influence on the onset of plastic hinge formation, energy absorption capacity, and the ultimate behavior of the beams It also led to a decrease in the initial stiffness, an increase in plastic rotation, and a shift in the location of plastic strain concentration within the critical section However, in the composite beams, due to their higher tensile capacity, more uniform stress distribution, and improved crack width control, the plastic hinge developed more gradually and exhibited a softer response This resulted in a more ductile failure mode compared with the conventional reinforced concrete beam
کلیدواژهها
نویسندگان
Ramin Tolou Jouyandeh
Ph D in Civil Engineering Structural Engineering, Geotechnical Seismic Research and High Performance Concrete Center, Department of Civil Engineering, Semnan Branch, Islamic Azad University, Semnan, Iran
Mahdi Bahri
M Sc in Executive Master of Business Administration eMBA Strategic Management, Department of Industrial Engineering, Nishabur Branch, Islamic Azad University, Nishabur, Iran
Mohammad Amin Atefinia
M Sc in Executive Master of Business Administration eMBA Strategic Management, Department of Industrial Engineering, Tehran Branch, Payam Nour University, Tehran, Iran
شیوه ارجاع
Tolou Jouyandeh, Ramin and Bahri, Mahdi and Atefinia, Mohammad Amin,1404,Behavior of Plastic Hinges in Reinforced Concrete and Composite Beams under Uniformly Distributed Load Using ABAQUS Software,1st International & 7th National conference on Mechanical-civil engineering and advanced technologies,Esfarayen
ارائهشده در
مجموعه مقالات اولین کنفرانس بین المللی و هفتمین کنفرانس ملی مهندسی مکانیک، عمران و فناوری های پیشرفته19 آبان 1404 · اسفراین