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Mahdi Shariati - One of the best experts on this subject based on the ideXlab platform.
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Analysis of influential factors for predicting the shear strength of a V-shaped angle shear Connector in composite beams using an adaptive neuro-fuzzy technique
Journal of Intelligent Manufacturing, 2019Co-Authors: Iman Mansouri, Mahdi Safa, M.m. Tahir, Mahdi Shariati, Z. Ibrahim, Dalibor PetkovicAbstract:The V-shaped angle shear Connector is recognized as to expand certain mechanical properties to the shear Connectors, contains adequate ductility, elevate resistance, power degradation resistance under cyclic charging, and high shear transmission, more economical than other shear Connectors, for instance, the L-shaped and C-shaped shear Connectors. The performance of this shear Connector had been investigated by previous researchers (Shariati et al. in Mater Struct 49(9):1–18, 2015), but the strength prediction was not clearly explained. In this investigation, the shear strength prediction of this Connector was analyzed based on several factors. The ultimate purpose was to investigate the variations of different factors that were affecting the shear strength of this Connector. To achieve this aim, the data (concrete compression strength, thickness, length, height, slope of inclination, and shear strength) were collected from the parametric studies using finite element analysis results for this purpose were input using the ANFIS method (neuro-fuzzy inference system). The finite element analysis results were verified by experimental test results. All variables from the predominant factors that were affected the shear strength of the shear Connector (V-shaped angle) were also selected by using the ANFIS process. The results exhibited that the proposed shear Connector (V-shaped angle) contained the potentiality to be used practically after several improvements. One option might be the improvement of the testing process for different predictive models with more input variables that will improve the predictive power of the created models.
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RETRACTED ARTICLE: Analysis of influential factors for predicting the shear strength of a V-shaped angle shear Connector in composite beams using an adaptive neuro-fuzzy technique
Journal of Intelligent Manufacturing, 2019Co-Authors: Iman Mansouri, Mahdi Safa, M.m. Tahir, Mahdi Shariati, Z. Ibrahim, D. PetkovićAbstract:The V-shaped angle shear Connector is recognized as to expand certain mechanical properties to the shear Connectors, contains adequate ductility, elevate resistance, power degradation resistance under cyclic charging, and high shear transmission, more economical than other shear Connectors, for instance, the L-shaped and C-shaped shear Connectors. The performance of this shear Connector had been investigated by previous researchers (Shariati et al. in Mater Struct 49(9):1–18, 2015 ), but the strength prediction was not clearly explained. In this investigation, the shear strength prediction of this Connector was analyzed based on several factors. The ultimate purpose was to investigate the variations of different factors that were affecting the shear strength of this Connector. To achieve this aim, the data (concrete compression strength, thickness, length, height, slope of inclination, and shear strength) were collected from the parametric studies using finite element analysis results for this purpose were input using the ANFIS method (neuro-fuzzy inference system). The finite element analysis results were verified by experimental test results. All variables from the predominant factors that were affected the shear strength of the shear Connector (V-shaped angle) were also selected by using the ANFIS process. The results exhibited that the proposed shear Connector (V-shaped angle) contained the potentiality to be used practically after several improvements. One option might be the improvement of the testing process for different predictive models with more input variables that will improve the predictive power of the created models.
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Behavior of V-shaped angle shear Connectors: experimental and parametric study
Materials and Structures, 2016Co-Authors: Mahdi Shariati, N. H. Ramli Sulong, Ali Shariati, Mohammadmehdi Arabnejad KhanoukiAbstract:In this paper a new shear Connector called V-shaped angle shear Connector for steel–concrete composite system is proposed. This shear Connector was proven to improve some mechanical properties of shear Connectors, including high shear transfer, uplift resistance, sufficient ductility, and strength degradation resistance under cyclic loading, as well as to being cost effective compared with similar shear Connectors, such as C-shaped channel and angle shear Connectors. A total of 14 push-out tests were performed on composite beams with these Connectors under monotonic and low cyclic loading. The failure mode, shear resistance, and ductility of the push-out specimens were investigated. The study also comprises of finite element and parametric analysis using an effective numerical model of the experimental push-out tests using the program ABAQUS. The finite element models were validated against the test results presented in experimental tests. Results showed that V-shaped angle shear Connector has excellent behavior in terms of both shear strength and ductility. In addition, high resistance under cyclic loading was exhibited since the shear resistance of this Connector was almost similar in both monotonic and cyclic loadings. Finite element results show good agreement with experimental results. The results discussed on the ductility and strength of this Connector with different size and slope of inclination. In addition, the channel and angle shear Connectors were compared with V-shaped angle shear Connectors. V-shaped angle shear Connectors behave much better than other similar Connectors, such as normal angle shear Connectors, and are superior to channel shear Connectors in most specimens.
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comparative performance of channel and angle shear Connectors in high strength concrete composites an experimental study
Construction and Building Materials, 2016Co-Authors: Mahdi Shariati, Ali Shariati, N Ramli H Sulong, Ahmad Beng Hong KuehAbstract:Structural performance of steel-concrete composite structures relies deeply on the characteristics of the shear Connectors. Recently, great attention has been focused on the implementation of C-shaped Connectors due to numerous advantages when used in composite beams. However, very little information is available in regard to the response of such Connectors when embedded in the high strength concrete (HSC). To address this research gap, sixteen experiments on push-out specimens were conducted to compare the performance of channel and angle shear Connectors embedded in HSC. The shear resistance and ductility of the Connectors were primarily investigated by applying static and cyclic loadings. Results were also compared with the cases when using normal reinforced concrete. Furthermore, the evaluation of the available equations suggested by the American and Canadian codes for estimating these Connectors' capacities when using HSC was carried out. In general, channel Connectors exhibited 6.8-30.1% more shear strength than those of angle under monotonic loading, and up to 18.5% more when subjected to cyclic loading. Angle Connectors were also less ductile than channel Connectors and did not satisfy the ductility criteria specified in the codes' requirements. Connector fracture mode of failure was recorded for both Connector types.
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comparison of behaviour between channel and angle shear Connectors under monotonic and fully reversed cyclic loading
Construction and Building Materials, 2013Co-Authors: Mahdi Shariati, Ali Shariati, Mohammadmehdi Arabnejad Khanouki, N Ramli H Sulong, Meldi Suhatril, Hamid SinaeiAbstract:Abstract Channel shear Connectors are used to transfer longitudinal shear forces through the steel–concrete interface in composite beams. Angle shear Connectors without bottom flange compared to channel shear Connectors could be cheaper and more economic by saving more steel material. This paper presents an experimental evaluation for comparison of the behaviour of channel and angel shear Connectors under monotonic and fully reserved cyclic loading based on 16 push-out tests. The connection shear resistance, ductility and failure modes are presented and discussed. By comparing the channel and angle shear Connectors, it was concluded that angle shear Connectors showed 7.5–36.4% less shear strength than channel shear Connectors under monotonic loading and 23.6–49.2% under fully reversed cyclic loading. Connector’s fracture type of failure was experienced for both channel and angle Connectors. After the failure, more cracking was observed in slabs with channels compared to slabs with angles. Furthermore, in despite of sufficient ductility for all channel Connectors, angle Connectors showed less ductility. The results indicate that the angle shear Connector gave good behaviour in terms of the ultimate shear capacity; however, this type of Connector cannot satisfy the ductility criteria imposed by some codes. In the end, the shear load capacities obtained from the experiments are compared with those suggested by the design codes.
Ali Shariati - One of the best experts on this subject based on the ideXlab platform.
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Behavior of V-shaped angle shear Connectors: experimental and parametric study
Materials and Structures, 2016Co-Authors: Mahdi Shariati, N. H. Ramli Sulong, Ali Shariati, Mohammadmehdi Arabnejad KhanoukiAbstract:In this paper a new shear Connector called V-shaped angle shear Connector for steel–concrete composite system is proposed. This shear Connector was proven to improve some mechanical properties of shear Connectors, including high shear transfer, uplift resistance, sufficient ductility, and strength degradation resistance under cyclic loading, as well as to being cost effective compared with similar shear Connectors, such as C-shaped channel and angle shear Connectors. A total of 14 push-out tests were performed on composite beams with these Connectors under monotonic and low cyclic loading. The failure mode, shear resistance, and ductility of the push-out specimens were investigated. The study also comprises of finite element and parametric analysis using an effective numerical model of the experimental push-out tests using the program ABAQUS. The finite element models were validated against the test results presented in experimental tests. Results showed that V-shaped angle shear Connector has excellent behavior in terms of both shear strength and ductility. In addition, high resistance under cyclic loading was exhibited since the shear resistance of this Connector was almost similar in both monotonic and cyclic loadings. Finite element results show good agreement with experimental results. The results discussed on the ductility and strength of this Connector with different size and slope of inclination. In addition, the channel and angle shear Connectors were compared with V-shaped angle shear Connectors. V-shaped angle shear Connectors behave much better than other similar Connectors, such as normal angle shear Connectors, and are superior to channel shear Connectors in most specimens.
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comparative performance of channel and angle shear Connectors in high strength concrete composites an experimental study
Construction and Building Materials, 2016Co-Authors: Mahdi Shariati, Ali Shariati, N Ramli H Sulong, Ahmad Beng Hong KuehAbstract:Structural performance of steel-concrete composite structures relies deeply on the characteristics of the shear Connectors. Recently, great attention has been focused on the implementation of C-shaped Connectors due to numerous advantages when used in composite beams. However, very little information is available in regard to the response of such Connectors when embedded in the high strength concrete (HSC). To address this research gap, sixteen experiments on push-out specimens were conducted to compare the performance of channel and angle shear Connectors embedded in HSC. The shear resistance and ductility of the Connectors were primarily investigated by applying static and cyclic loadings. Results were also compared with the cases when using normal reinforced concrete. Furthermore, the evaluation of the available equations suggested by the American and Canadian codes for estimating these Connectors' capacities when using HSC was carried out. In general, channel Connectors exhibited 6.8-30.1% more shear strength than those of angle under monotonic loading, and up to 18.5% more when subjected to cyclic loading. Angle Connectors were also less ductile than channel Connectors and did not satisfy the ductility criteria specified in the codes' requirements. Connector fracture mode of failure was recorded for both Connector types.
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comparison of behaviour between channel and angle shear Connectors under monotonic and fully reversed cyclic loading
Construction and Building Materials, 2013Co-Authors: Mahdi Shariati, Ali Shariati, Mohammadmehdi Arabnejad Khanouki, N Ramli H Sulong, Meldi Suhatril, Hamid SinaeiAbstract:Abstract Channel shear Connectors are used to transfer longitudinal shear forces through the steel–concrete interface in composite beams. Angle shear Connectors without bottom flange compared to channel shear Connectors could be cheaper and more economic by saving more steel material. This paper presents an experimental evaluation for comparison of the behaviour of channel and angel shear Connectors under monotonic and fully reserved cyclic loading based on 16 push-out tests. The connection shear resistance, ductility and failure modes are presented and discussed. By comparing the channel and angle shear Connectors, it was concluded that angle shear Connectors showed 7.5–36.4% less shear strength than channel shear Connectors under monotonic loading and 23.6–49.2% under fully reversed cyclic loading. Connector’s fracture type of failure was experienced for both channel and angle Connectors. After the failure, more cracking was observed in slabs with channels compared to slabs with angles. Furthermore, in despite of sufficient ductility for all channel Connectors, angle Connectors showed less ductility. The results indicate that the angle shear Connector gave good behaviour in terms of the ultimate shear capacity; however, this type of Connector cannot satisfy the ductility criteria imposed by some codes. In the end, the shear load capacities obtained from the experiments are compared with those suggested by the design codes.
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Various types of shear Connectors in composite structures: A review
International Journal of Physical Sciences, 2012Co-Authors: Ali Shariati, N. H. Ramlisulong, ShariatiAbstract:In this paper, an attempt has been made to review various types of shear Connector in composite structures. This review tries to identify the shear Connectors that are most relevant to composite structures and reviews representative journal publications that are related to this topic. It attempts to cover all types of shear Connector. The article concludes with a discussion of recent applications of shear Connectors in composite structures. Comparative studies, which have been conducted by several researchers, were covered to address the applicability and the efficiency of various shear Connectors. The representative shear Connectors for stud Connectors as commonly used shear Connectors in composite structures were discussed and a summary of their behaviour was included.
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Investigation of channel shear Connectors for composite concrete and steel T-beam
International Journal of Physical Sciences, 2012Co-Authors: Ali Shariati, N.h. Ramli Sulong, Meldi Suhatril, ShariatiAbstract:This paper evaluates the behavior of channel shear Connectors, embedded in a concrete slab, with different concrete materials. The results of a series of limited push-out specimens were presented and discussed. The push-out tests comprise of channel shear Connectors in different types of concrete. Reinforcement was included in some specimens, as well. The results showed that using reinforcements in concrete slab, enhances the ductility and shear capacity of the composite system and using channels embedded in unconfined normal concrete, has a brittle performance. The channel shear capacity is less in the lightweight aggregate concrete, compared to the normal ones. Adequate ductility was reported for the channel shear Connectors in most of the concrete types. In addition, it was verified that the channel Connector presents a very rigid behavior, during the primary phase of loading. Using channel Connectors with longer length can increase the ductility of the system. In general, the channel shear Connector showed a ductile behavior. The results verified using channel shear Connectors, embedded in tested concrete, in composite structures. The results also discussed the effect of different concrete types, on the ductility and load–displacement performance of the specimens. Key words: Shear Connector, push-out test, load-slip curve, composite.
Ahmad Beng Hong Kueh - One of the best experts on this subject based on the ideXlab platform.
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comparative performance of channel and angle shear Connectors in high strength concrete composites an experimental study
Construction and Building Materials, 2016Co-Authors: Mahdi Shariati, Ali Shariati, N Ramli H Sulong, Ahmad Beng Hong KuehAbstract:Structural performance of steel-concrete composite structures relies deeply on the characteristics of the shear Connectors. Recently, great attention has been focused on the implementation of C-shaped Connectors due to numerous advantages when used in composite beams. However, very little information is available in regard to the response of such Connectors when embedded in the high strength concrete (HSC). To address this research gap, sixteen experiments on push-out specimens were conducted to compare the performance of channel and angle shear Connectors embedded in HSC. The shear resistance and ductility of the Connectors were primarily investigated by applying static and cyclic loadings. Results were also compared with the cases when using normal reinforced concrete. Furthermore, the evaluation of the available equations suggested by the American and Canadian codes for estimating these Connectors' capacities when using HSC was carried out. In general, channel Connectors exhibited 6.8-30.1% more shear strength than those of angle under monotonic loading, and up to 18.5% more when subjected to cyclic loading. Angle Connectors were also less ductile than channel Connectors and did not satisfy the ductility criteria specified in the codes' requirements. Connector fracture mode of failure was recorded for both Connector types.
N Ramli H Sulong - One of the best experts on this subject based on the ideXlab platform.
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comparative performance of channel and angle shear Connectors in high strength concrete composites an experimental study
Construction and Building Materials, 2016Co-Authors: Mahdi Shariati, Ali Shariati, N Ramli H Sulong, Ahmad Beng Hong KuehAbstract:Structural performance of steel-concrete composite structures relies deeply on the characteristics of the shear Connectors. Recently, great attention has been focused on the implementation of C-shaped Connectors due to numerous advantages when used in composite beams. However, very little information is available in regard to the response of such Connectors when embedded in the high strength concrete (HSC). To address this research gap, sixteen experiments on push-out specimens were conducted to compare the performance of channel and angle shear Connectors embedded in HSC. The shear resistance and ductility of the Connectors were primarily investigated by applying static and cyclic loadings. Results were also compared with the cases when using normal reinforced concrete. Furthermore, the evaluation of the available equations suggested by the American and Canadian codes for estimating these Connectors' capacities when using HSC was carried out. In general, channel Connectors exhibited 6.8-30.1% more shear strength than those of angle under monotonic loading, and up to 18.5% more when subjected to cyclic loading. Angle Connectors were also less ductile than channel Connectors and did not satisfy the ductility criteria specified in the codes' requirements. Connector fracture mode of failure was recorded for both Connector types.
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comparison of behaviour between channel and angle shear Connectors under monotonic and fully reversed cyclic loading
Construction and Building Materials, 2013Co-Authors: Mahdi Shariati, Ali Shariati, Mohammadmehdi Arabnejad Khanouki, N Ramli H Sulong, Meldi Suhatril, Hamid SinaeiAbstract:Abstract Channel shear Connectors are used to transfer longitudinal shear forces through the steel–concrete interface in composite beams. Angle shear Connectors without bottom flange compared to channel shear Connectors could be cheaper and more economic by saving more steel material. This paper presents an experimental evaluation for comparison of the behaviour of channel and angel shear Connectors under monotonic and fully reserved cyclic loading based on 16 push-out tests. The connection shear resistance, ductility and failure modes are presented and discussed. By comparing the channel and angle shear Connectors, it was concluded that angle shear Connectors showed 7.5–36.4% less shear strength than channel shear Connectors under monotonic loading and 23.6–49.2% under fully reversed cyclic loading. Connector’s fracture type of failure was experienced for both channel and angle Connectors. After the failure, more cracking was observed in slabs with channels compared to slabs with angles. Furthermore, in despite of sufficient ductility for all channel Connectors, angle Connectors showed less ductility. The results indicate that the angle shear Connector gave good behaviour in terms of the ultimate shear capacity; however, this type of Connector cannot satisfy the ductility criteria imposed by some codes. In the end, the shear load capacities obtained from the experiments are compared with those suggested by the design codes.
N.h. Ramli Sulong - One of the best experts on this subject based on the ideXlab platform.
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Behavior of Tilted Angle Shear Connectors.
PLOS ONE, 2015Co-Authors: Koosha Khorramian, Shariati, Shervin Maleki, N.h. Ramli SulongAbstract:According to recent researches, angle shear Connectors are appropriate to transfer longitudinal shear forces across the steel-concrete interface. Angle steel profile has been used in different positions as L-shaped or C-shaped shear Connectors. The application of angle shear Connectors in tilted positions is of interest in this study. This study investigates the behaviour of tilted-shaped angle shear Connectors under monotonic loading using experimental push out tests. Eight push-out specimens are tested to investigate the effects of different angle parameters on the ultimate load capacity of Connectors. Two different tilted angles of 112.5 and 135 degrees between the angle leg and steel beam are considered. In addition, angle sizes and lengths are varied. Two different failure modes were observed consisting of concrete crushing-splitting and Connector fracture. By increasing the size of Connector, the maximum load increased for most cases. In general, the 135 degrees tilted angle shear Connectors have a higher strength and stiffness than the 112.5 degrees type.
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Investigation of channel shear Connectors for composite concrete and steel T-beam
International Journal of Physical Sciences, 2012Co-Authors: Ali Shariati, N.h. Ramli Sulong, Meldi Suhatril, ShariatiAbstract:This paper evaluates the behavior of channel shear Connectors, embedded in a concrete slab, with different concrete materials. The results of a series of limited push-out specimens were presented and discussed. The push-out tests comprise of channel shear Connectors in different types of concrete. Reinforcement was included in some specimens, as well. The results showed that using reinforcements in concrete slab, enhances the ductility and shear capacity of the composite system and using channels embedded in unconfined normal concrete, has a brittle performance. The channel shear capacity is less in the lightweight aggregate concrete, compared to the normal ones. Adequate ductility was reported for the channel shear Connectors in most of the concrete types. In addition, it was verified that the channel Connector presents a very rigid behavior, during the primary phase of loading. Using channel Connectors with longer length can increase the ductility of the system. In general, the channel shear Connector showed a ductile behavior. The results verified using channel shear Connectors, embedded in tested concrete, in composite structures. The results also discussed the effect of different concrete types, on the ductility and load–displacement performance of the specimens. Key words: Shear Connector, push-out test, load-slip curve, composite.
