The Experts below are selected from a list of 14043 Experts worldwide ranked by ideXlab platform
Elisa Lumantarna - One of the best experts on this subject based on the ideXlab platform.
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Plastic Hinge length for lightly reinforced c shaped concrete walls
Journal of Earthquake Engineering, 2020Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:This research investigates the equivalent Plastic Hinge length of reinforced concrete C-shaped walls with reinforcement detailing typically found in low-to-moderate seismic regions. Reinforced conc...
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Plastic Hinge analysis for lightly reinforced and unconfined concrete structural walls
Bulletin of Earthquake Engineering, 2018Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:Poor performance of lightly reinforced and unconfined concrete structural walls have been observed in recent earthquake events. This research investigates the displacement capacity of such walls by comparing the results of a series of state-of-the-art finite element analyses for a range of different structural walls to that estimated using Plastic Hinge analyses. The common expressions used in estimating the yield curvature, yield displacement and Plastic displacement are scrutinised for these types of walls. Some recommendations are given to improve the prediction of the displacement capacity of lightly reinforced and unconfined rectangular and C-shaped walls for flexural actions using a Plastic Hinge analysis. Importantly, a parameter has been recommended to be used in a “modified” approach for estimating the nominal yield displacement of lightly reinforced concrete walls. Different expressions are also recommended depending on the amount of longitudinal reinforcement used in the wall in comparison to that required to initiate secondary cracking. This is important for providing better estimations of the displacement capacity of RC structural wall buildings in low-to-moderate seismic regions such that vulnerability studies can be conducted.
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Plastic Hinge Length for Lightly Reinforced Rectangular Concrete Walls
Journal of Earthquake Engineering, 2017Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:This research investigates the Plastic Hinge length in lightly reinforced rectangular walls typically found in regions of low-to-moderate seismicity. Poor performance has been exhibited by lightly reinforced concrete walls in past earthquake events. A series of finite element analyses have been carried out which demonstrate that if the longitudinal reinforcement ratio in the wall is below a certain threshold value, there will not be sufficient reinforcement to cause secondary cracking, and instead fracture of the longitudinal reinforcement at a single crack could occur. A Plastic Hinge length equation has been derived based on the results from the numerical simulations.
Rd Hoult - One of the best experts on this subject based on the ideXlab platform.
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Plastic Hinge length for lightly reinforced c shaped concrete walls
Journal of Earthquake Engineering, 2020Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:This research investigates the equivalent Plastic Hinge length of reinforced concrete C-shaped walls with reinforcement detailing typically found in low-to-moderate seismic regions. Reinforced conc...
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Plastic Hinge Length for Lightly Reinforced C-Shaped Concrete Walls
'Informa UK Limited', 2020Co-Authors: Rd Hoult, Hm Goldsworthy, Lumantarna EAbstract:This research investigates the equivalent Plastic Hinge length of reinforced concrete C-shaped walls with reinforcement detailing typically found in low-to-moderate seismic regions. Reinforced concrete walls in these regions commonly have low amounts of longitudinal reinforcement and unconfined boundary regions, which have been shown to perform poorly in recent earthquake events. A series of state-of-the-art finite element analyses are undertaken to find the longitudinal strain distributions of low-rise, mid-rise, and high-rise C-shaped walls. The results of the equivalent Plastic Hinge lengths from the numerical investigation are shown to compare poorly to the predictions from some of the equations that currently exist in the literature. Subsequently, expressions are derived for the equivalent Plastic Hinge length for these types of walls and for the different modes of bending. The expressions derived from this research intend to improve the displacement capacity for these types of walls when using Plastic Hinge analyses
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Plastic Hinge analysis for lightly reinforced and unconfined concrete structural walls
Bulletin of Earthquake Engineering, 2018Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:Poor performance of lightly reinforced and unconfined concrete structural walls have been observed in recent earthquake events. This research investigates the displacement capacity of such walls by comparing the results of a series of state-of-the-art finite element analyses for a range of different structural walls to that estimated using Plastic Hinge analyses. The common expressions used in estimating the yield curvature, yield displacement and Plastic displacement are scrutinised for these types of walls. Some recommendations are given to improve the prediction of the displacement capacity of lightly reinforced and unconfined rectangular and C-shaped walls for flexural actions using a Plastic Hinge analysis. Importantly, a parameter has been recommended to be used in a “modified” approach for estimating the nominal yield displacement of lightly reinforced concrete walls. Different expressions are also recommended depending on the amount of longitudinal reinforcement used in the wall in comparison to that required to initiate secondary cracking. This is important for providing better estimations of the displacement capacity of RC structural wall buildings in low-to-moderate seismic regions such that vulnerability studies can be conducted.
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Plastic Hinge Length for Lightly Reinforced Rectangular Concrete Walls
Journal of Earthquake Engineering, 2017Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:This research investigates the Plastic Hinge length in lightly reinforced rectangular walls typically found in regions of low-to-moderate seismicity. Poor performance has been exhibited by lightly reinforced concrete walls in past earthquake events. A series of finite element analyses have been carried out which demonstrate that if the longitudinal reinforcement ratio in the wall is below a certain threshold value, there will not be sufficient reinforcement to cause secondary cracking, and instead fracture of the longitudinal reinforcement at a single crack could occur. A Plastic Hinge length equation has been derived based on the results from the numerical simulations.
Seung-eock Kim - One of the best experts on this subject based on the ideXlab platform.
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nonlinear analysis of space steel frames using fiber Plastic Hinge concept
Engineering Structures, 2007Co-Authors: Cuong Ngohuu, Seung-eock KimAbstract:Abstract A fiber Plastic Hinge concept in which the cross-section is partitioned into fibers is applied in this research to predict the second-order inelastic behavior of space steel frames instead of the common Plastic Hinge concept using a specific yield surface. The plastification of the Hinge is considered by tracking the uniaxial stress–strain relationship of each fiber on the cross-section during the analysis process. The stability functions obtained from the closed-form solution of a beam–column subjected to end forces are used to capture the second-order effects to minimize modeling and solution time. Using only one element per member in structure modeling, the nonlinear responses predicted by the proposed approach compare well with those given by the ABAQUS program using shell element and Plastic zone analyses. Some numerical examples are shown to verify the accuracy and computing efficiency of the proposed approach.
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3 d second order Plastic Hinge analysis accounting for local buckling
Engineering Structures, 2003Co-Authors: Seung-eock Kim, Jaehong Lee, Joosoo ParkAbstract:Abstract In this paper, 3-D second-order Plastic-Hinge analysis accounting for local buckling is developed. This analysis accounts for material and geometric non-linearities of the structural system and its component members. The problem associated with conventional second-order Plastic-Hinge analyses, which do not consider the degradation of the flexural strength caused by local buckling, is overcome. Efficient ways of assessing steel frame behavior including gradual yielding associated with residual stresses and flexure, second-order effect, and geometric imperfections are presented. In this study, a model containing the width–thickness ratio is used to account for local buckling. The proposed analysis is verified by the comparison with other analyses and Load Resistance Factor Design results. A case study shows that local buckling is a very crucial element to be considered in second-order Plastic-Hinge analysis. The proposed analysis is shown to be an efficient, reliable tool ready to be implemented into design practice.
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3 d second order Plastic Hinge analysis accounting for lateral torsional buckling
International Journal of Solids and Structures, 2002Co-Authors: Seung-eock Kim, Jaehong Lee, Joosoo ParkAbstract:In this paper, 3-D second-order Plastic-Hinge analysis accounting for lateral torsional buckling is developed. This analysis accounts for material and geometric nonlinearities of the structural system and its component members. Moreover, the problem associated with conventional second-order Plastic-Hinge analyses, which do not consider the degradation of the flexural strength caused by lateral torsional buckling, is overcome. Efficient ways of assessing steel frame behavior including gradual yielding associated with residual stresses and flexure, second-order effect, and geometric imperfections are presented. In this study, a model consisting of the unbraced length and cross-section shape is used to account for lateral torsional buckling. The proposed analysis is verified by the comparison of the other analyses and load and resistance factor design results. A case study shows that lateral torsional buckling is a very crucial element to be considered in second-order Plastic-Hinge analysis. The proposed analysis is shown to be an efficient, reliable tool ready to be implemented into design practice.
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Improved refined Plastic-Hinge analysis accounting for lateral torsional buckling
Journal of Constructional Steel Research, 2002Co-Authors: Seung-eock Kim, Jaehong LeeAbstract:In this paper, a refined Plastic-Hinge analysis is improved to account for the effect of lateral torsional buckling. This analysis accounts for material and geometric nonlinearities of the structural system and its component members. Moreover, the problem associated with conventional refined Plastic-Hinge analyses in that no consideration is given to the degradation of the flexural strength caused by the lateral torsional buckling is overcome. Efficient ways of assessing steel frame behavior including gradual yielding associated with residual stresses and flexure, second-order effect, and geometric imperfections are presented. In this study, a model consisting of the unbraced length and cross-section shape is used to account for the lateral torsional buckling. The proposed analysis is verified by the comparison of the Plastic-zone and LRFD results. Case studies show that lateral torsional buckling is a very crucial element to be considered in refined Plastic Hinge analysis. The proposed analysis is shown to be an efficient, reliable tool ready to be implemented into design practice. 2002 Elsevier Science Ltd. All rights reserved.
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Improved refined Plastic-Hinge analysis accounting for local buckling
Engineering Structures, 2001Co-Authors: Seung-eock Kim, Jaehong LeeAbstract:In this paper, a refined Plastic-Hinge analysis is improved to account for the effect of local buckling. This analysis accounts for material and geometric nonlinearities of the structural system and its component members. Moreover, the problem associated with conventional refined Plastic-Hinge analyses in that no consideration is given to the degradation of the flexural strength caused by the local buckling is overcome. Efficient ways of assessing steel frame behavior including gradual yielding associated with residual stresses and flexure, second-order effect, and geometric imperfections are presented. In this study, a model consisting of the width– thickness ratio is used to account for the local buckling. The proposed analysis is verified by the comparison of the Plastic-zone, LRFD, and experimental results. Case studies show that local buckling is a very crucial element to be considered in refined Plastic Hinge analysis. The proposed analysis is shown to be an efficient, reliable tool ready to be implemented into design practice. 2001 Elsevier Science Ltd. All rights reserved.
Hm Goldsworthy - One of the best experts on this subject based on the ideXlab platform.
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Plastic Hinge length for lightly reinforced c shaped concrete walls
Journal of Earthquake Engineering, 2020Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:This research investigates the equivalent Plastic Hinge length of reinforced concrete C-shaped walls with reinforcement detailing typically found in low-to-moderate seismic regions. Reinforced conc...
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Plastic Hinge Length for Lightly Reinforced C-Shaped Concrete Walls
'Informa UK Limited', 2020Co-Authors: Rd Hoult, Hm Goldsworthy, Lumantarna EAbstract:This research investigates the equivalent Plastic Hinge length of reinforced concrete C-shaped walls with reinforcement detailing typically found in low-to-moderate seismic regions. Reinforced concrete walls in these regions commonly have low amounts of longitudinal reinforcement and unconfined boundary regions, which have been shown to perform poorly in recent earthquake events. A series of state-of-the-art finite element analyses are undertaken to find the longitudinal strain distributions of low-rise, mid-rise, and high-rise C-shaped walls. The results of the equivalent Plastic Hinge lengths from the numerical investigation are shown to compare poorly to the predictions from some of the equations that currently exist in the literature. Subsequently, expressions are derived for the equivalent Plastic Hinge length for these types of walls and for the different modes of bending. The expressions derived from this research intend to improve the displacement capacity for these types of walls when using Plastic Hinge analyses
-
Plastic Hinge analysis for lightly reinforced and unconfined concrete structural walls
Bulletin of Earthquake Engineering, 2018Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:Poor performance of lightly reinforced and unconfined concrete structural walls have been observed in recent earthquake events. This research investigates the displacement capacity of such walls by comparing the results of a series of state-of-the-art finite element analyses for a range of different structural walls to that estimated using Plastic Hinge analyses. The common expressions used in estimating the yield curvature, yield displacement and Plastic displacement are scrutinised for these types of walls. Some recommendations are given to improve the prediction of the displacement capacity of lightly reinforced and unconfined rectangular and C-shaped walls for flexural actions using a Plastic Hinge analysis. Importantly, a parameter has been recommended to be used in a “modified” approach for estimating the nominal yield displacement of lightly reinforced concrete walls. Different expressions are also recommended depending on the amount of longitudinal reinforcement used in the wall in comparison to that required to initiate secondary cracking. This is important for providing better estimations of the displacement capacity of RC structural wall buildings in low-to-moderate seismic regions such that vulnerability studies can be conducted.
-
Plastic Hinge Length for Lightly Reinforced Rectangular Concrete Walls
Journal of Earthquake Engineering, 2017Co-Authors: Rd Hoult, Hm Goldsworthy, Elisa LumantarnaAbstract:This research investigates the Plastic Hinge length in lightly reinforced rectangular walls typically found in regions of low-to-moderate seismicity. Poor performance has been exhibited by lightly reinforced concrete walls in past earthquake events. A series of finite element analyses have been carried out which demonstrate that if the longitudinal reinforcement ratio in the wall is below a certain threshold value, there will not be sufficient reinforcement to cause secondary cracking, and instead fracture of the longitudinal reinforcement at a single crack could occur. A Plastic Hinge length equation has been derived based on the results from the numerical simulations.
Joosoo Park - One of the best experts on this subject based on the ideXlab platform.
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3 d second order Plastic Hinge analysis accounting for local buckling
Engineering Structures, 2003Co-Authors: Seung-eock Kim, Jaehong Lee, Joosoo ParkAbstract:Abstract In this paper, 3-D second-order Plastic-Hinge analysis accounting for local buckling is developed. This analysis accounts for material and geometric non-linearities of the structural system and its component members. The problem associated with conventional second-order Plastic-Hinge analyses, which do not consider the degradation of the flexural strength caused by local buckling, is overcome. Efficient ways of assessing steel frame behavior including gradual yielding associated with residual stresses and flexure, second-order effect, and geometric imperfections are presented. In this study, a model containing the width–thickness ratio is used to account for local buckling. The proposed analysis is verified by the comparison with other analyses and Load Resistance Factor Design results. A case study shows that local buckling is a very crucial element to be considered in second-order Plastic-Hinge analysis. The proposed analysis is shown to be an efficient, reliable tool ready to be implemented into design practice.
-
3 d second order Plastic Hinge analysis accounting for lateral torsional buckling
International Journal of Solids and Structures, 2002Co-Authors: Seung-eock Kim, Jaehong Lee, Joosoo ParkAbstract:In this paper, 3-D second-order Plastic-Hinge analysis accounting for lateral torsional buckling is developed. This analysis accounts for material and geometric nonlinearities of the structural system and its component members. Moreover, the problem associated with conventional second-order Plastic-Hinge analyses, which do not consider the degradation of the flexural strength caused by lateral torsional buckling, is overcome. Efficient ways of assessing steel frame behavior including gradual yielding associated with residual stresses and flexure, second-order effect, and geometric imperfections are presented. In this study, a model consisting of the unbraced length and cross-section shape is used to account for lateral torsional buckling. The proposed analysis is verified by the comparison of the other analyses and load and resistance factor design results. A case study shows that lateral torsional buckling is a very crucial element to be considered in second-order Plastic-Hinge analysis. The proposed analysis is shown to be an efficient, reliable tool ready to be implemented into design practice.
