Seismic performance of a two-story unsymmetrical reinforced concrete building under reversed cyclic bi-directional loading

Mo, Y. L.; Luu, C. H.; Nie, Xin; Tseng, Chien-Chuang; Hwang, Shyh‐Jiann

doi:10.1016/j.engstruct.2017.05.010

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…RC structures are often subjected to multi-directional loadings under earthquake ground motions [79,80]. A bi-directional loading scheme was used herein to investigate the seismic performance of RRC columns.…”

Section: Influence Of Bi-directional Loadingmentioning

confidence: 99%

Performance Evaluation of Reinforced Recycled Aggregate Concrete Columns under Cyclic Loadings

et al. 2019

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Recycled concrete aggregates (RCAs) generated from construction and demolition activities have been recognized as a feasible alternative to natural aggregates (NAs). Naturally, the columns fabricated with reinforced recycled concrete (RRC) have been proposed and investigated to promote the structural use of recycled aggregate concrete (RAC). There is still, however, very limited modeling research available to reproduce, accurately and efficiently, the seismic response of RRC columns under lateral cyclic loading; proper evaluations are also lacking on addressing the columns’ seismic behaviors. To fill some of those research gaps, a fiber-based numerical model is developed in this study and then validated with the experimental results published in the literature. Subsequently, the numerical model justified is applied to carry out a comprehensive parametric study to examine the effects of a range of variables on the hysteretic characteristics of RRC columns. Furthermore, a grey relational analysis is conducted to establish quantifiable evidence of key variable sensitivities. The evaluation results imply that the use of the additional water method (AWM) for manufacturing RAC is likely to reduce the lateral load-carrying capacity of the RRC columns (up to 10%), whereas the opposite would occur if a conventional mixing procedure is adopted. Moreover, compared with other factors such as steel area ratio, the content of RCA replacement has a less remarkable effect on the seismic performance of the RRC columns. In general, the RRC columns possess acceptable seismic-resistant properties, and they can be used in earthquake-prone regions with confidence.

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Section: Influence Of Bi-directional Loadingmentioning

confidence: 99%

Performance Evaluation of Reinforced Recycled Aggregate Concrete Columns under Cyclic Loadings

et al. 2019

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“…3. Analytical model for cyclic stress-strain curve of concrete [5,15] Concrete does not experience only full unloadingreloading cycles during earthquake, but partial unloading-reloading cycles may occurred in compression and tension. Mander, Priestley and Park [17] developed a stress-strain model for a transverse reinforced confined concrete subjected to uniaxial reversed compression loading with tension.…”

Section: Modeling the Cyclic Behavior Of Concretementioning

confidence: 99%

“…In time-history analysis, 2 nd -order differential equation of the building is solved by using one of step by step integration methods [1,2]. A lot of researcher, investigated nonlinear behavior of the building under static, cyclic loading and acceleration loading and exerted so more effort for modelling of this nonlinear behavior [3][4][5]. Therefore, modelling of nonlinear behavior has been an important research area from past to present [6,7].…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the effect on ultimate loading capacity of different longitudinal reinforcement ratios of a RC portal frame

Karaton¹,

Awla²

2018

JSEAM

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In this study, the nonlinear static Pushover analyses of a reinforced concrete portal frame are obtained by using Fiber element method based on displacement. For calculating of cyclic behavior of concrete, the Mander-Priestley-Park model is used. Cyclic behavior of the reinforcement is obtained by using Mengotto-Pinto steel model. Different longitudinal reinforcement ratios are selected for investigating effect on the nonlinear behavior of a portal frame under horizontal forces. Concrete mean strength is 20 MPa and confinement factor is 1.2. The yield strength of reinforcement model is 420 MPa. Obtained results are evaluated with regard to the top displacement-base shear force and top rotation-base moment. The lateral load capacities and the overturning moment capacities obtained from 2 nd , 3 rd , 4 th and 5 th cases were calculated more between 81-200% and 101-286% than 1 st case, respectively. As a results, it is determined that the lateral load capacity and the overturning moment capacity increase depending on increasing of longitudinal reinforcement ratio in columns.

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“…On one hand, structural health monitoring (SHM) [19][20][21] and damage detection technologies [22,23] have been developed to report structural health status and damage situations by using various integrated sensors [24][25][26] and advanced algorithms with the goal of issuing early warnings in the presence of structural damage. On the other hand, destructive tests are conducted on various structures to better understand the structural behavior under failure [27,28]. However, civil infrastructures often involve large-sized structural components, making destructive tests of such large components difficult.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of a 30-Meter Full-Scale Simply Supported Prestressed Concrete Box Girder

et al. 2020

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Compared with scaled-model testing, full-scale destructive testing is more reliable since the test has no size effect and can truly record the mechanical performance of the structure. However, due to the high cost, only very few full-scale destructive tests have been conducted on the flexural behavior of prestressed concrete (PC) box girders with girders removed from decommissioned bridges. Moreover, related destructive testing on the flexural behavior of a new precast box girder has been rarely reported. To investigate the flexural behavior and optimize the design, destructive testing of a 30-meter full-scale simply supported prestressed box girder was conducted at the construction site. It is illustrated that the failure mode of the tested girder was fracture of the prestressing tendon, and the corresponding maximum compressive strain in the top flange was only 1456 μ ε , which is far less than the ultimate compressive strain (3300 μ ε ). Therefore, the concrete in the top flange was not fully utilized. A nonlinear analysis procedure was performed using the finite strip method (FSM). The validity of the analysis was demonstrated by comparing the analytical results with those of the full-scale test in the field and a scaled model test in a laboratory. Using the developed numerical method, parametric analyses of the ratio of reinforcement were carried out. The prestressing tendon of the tested girder was increased from four strands to six strands in each duct. After the optimization of the prestressed reinforcement, the girder was ductile and the bearing capacity could be increased by 44.3%.

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Seismic performance of a two-story unsymmetrical reinforced concrete building under reversed cyclic bi-directional loading

Cited by 5 publications

References 8 publications

Performance Evaluation of Reinforced Recycled Aggregate Concrete Columns under Cyclic Loadings

Performance Evaluation of Reinforced Recycled Aggregate Concrete Columns under Cyclic Loadings

Numerical investigation of the effect on ultimate loading capacity of different longitudinal reinforcement ratios of a RC portal frame

Flexural Behavior of a 30-Meter Full-Scale Simply Supported Prestressed Concrete Box Girder

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