Abolfazl Arabzade
@modares.ac.ir
Department of civil engineering and Inviromental
tarbiat modares
RESEARCH, TEACHING, or OTHER INTERESTS
Civil and Structural Engineering, Mechanics of Materials
Scopus Publications
Scopus Publications
Hamid Karimizadeh, Abolfazl Arabzadeh, Mohammad Reza Eftekhar, and Asghar Amani Dashlejeh
Hindawi Limited
In most cases, openings are made in the Web of deep beams for installations to pass through. These members require to be strengthened since the openings reduce load-bearing capacity. This study utilizes carbon fiber-reinforced polymer (CFRP) composites and steel protective frames (SPF) as strengthening configurations in reinforced concrete (RC) deep beams to improve the strength lost due to the square openings. To this end, eleven specimens with 10 × 50 × 120 cm in size were subjected to the three-point monotonic loading. In each beam, one or two square openings of 18 cm in each side are positioned either symmetrically or asymmetrically along the beam before it is strengthened with CFRP composites or SPFs. The strengthening composites were installed using externally bonded reinforcement (EBR) or externally bonded reinforcement on grooves (EBROG) techniques in two wrapped or inclined configurations. The obtained results indicate that specimens retrofitted by the SPF exhibited a superior performance as their loading capacity and energy absorption were enhanced by 115% and 337% in comparison with the reference beam, respectively, while these values for the specimens retrofitted by the EBROG technique were 58% and 182%, respectively, and 42% and 105% for those strengthened with the EBR technique.
Abolfazl Arabzadeh, T.Y. Yang, Rouhollah Hizaji, and Asghar Amani Dashlejeh
Canadian Science Publishing
Reinforced concrete (RC) deep beams are commonly used in structural design to transfer vertical loads when there is a vertical discontinuity in the load path. Much experimental research has been conducted on simply supported deep beams, but little research has been carried out using monotonic loads. In our study, an experimental investigation was conducted to study fixed-ended reinforced concrete deep beams under cyclic and monotonic loads. Five specimens were experimentally tested. The specimens had similar geometry but different reinforcement details. Four specimens were tested under cyclic loads and one specimen under a monotonic load to observe the deflection of the mid-span where the load was applied, as well as the crack patterns, failure modes, and shear strengths. The results show that web reinforcements are more effective than longitudinal bars at increasing shear capacity in fixed-ended RC deep beams.
Hamid Karimizadeh and Abolfazl Arabzadeh
Elsevier BV
abolfazl arabzade and امین نوری
Abolfazl Arabzadeh
Elsevier BV
T.Y. Yang, Asghar Amani Dashlejeh, Abolfazl Arabzadeh, and Rouhollah Hizaji
Elsevier BV
Abolfazl Arabzadeh, Rouhollah Hizaji, and T.Y. Yang
Elsevier BV
Abolfazl Arabzadeh and Hamid Karimizadeh
Elsevier BV
A. Arabzadeh and R. Hizaji
International Digital Organization for Scientific Information (IDOSI)
Reinforced Concrete (RC) deep beams are commonly used in structural design to transfer vertical loads when there is a vertical discontinuity in the load path. Due to their deep geometry, the force distribution within the RC deep beams is very different than the RC shallow beams. There are some strut and tie model (STM) already been developed for RC deep beams. However, most of these models are developed for RC deep beams with the simply supported boundary condition, which do not apply for RC deep beams with the fix-ended condition. In this paper, five fixed-end RC deep beams have been tested experimentally which were subjected to monotonic and cyclic loads. Also, a simple STM was proposed to simulate the load capacity and failure mode of fix-ended RC deep beams. The proposed STM has the main strut and sub struts to simulate the force distribution within the RC deep beams. This STM were verified using five fixed-end RC deep beams subjected to monotonic and cyclic loads and compared to the response of 31 additional independent experimental tests. The result shows the newly proposed STM can simulate the load capacity and failure mode of fix-ended RC deep beams very well.
Asghar Amani Dashlejeh and Abolfazl Arabzadeh
Inderscience Publishers
Abolfazl Arabzadeh and Hamid Reza Kazemi Nia Korrani
Springer Science and Business Media LLC
A. Arabzadeh and E. Omranian
Springer Science and Business Media LLC
A. Arabzadeh, M. Soltani, and A. Ayazi
Elsevier BV
A. Arabzade, H. Moharami, and A. Ayazi
Elsevier BV
A. Arabzadeh and M. Varmazyari
Elsevier BV