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Estimation of relations among hysteretic response measures and design parameters for RC rectangular shear

A. ARAB, Ma. R. BANAN, Mo. R. BANAN, S. FARHADI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 3-15 doi: 10.1007/s11709-017-0418-6

Abstract: Seismic design of RC structures requires estimation of structural member behavioral measures as functionsThe OpenSEES numerical simulations modeling of plastic hinge hysteretic behavior of RC shear walls andestimation of empirical relations among wall hysteretic indices and design parameters are presented.The estimated hysteretic response measures are wall effective stiffness, yield and ultimate curvaturesUsing results of numerous analyses, the empirical relations among wall cyclic behavioral measures and

Keywords： RC wall hysteretic measures     RC wall design parameters     empirical relations     numerical simulations     RC rectangularwall plastic hinge    

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Effect of RC wall on the development of plastic rotation in the beams of RC frame structures

Amar KAHIL, Aghiles NEKMOUCHE, Said BOUKAIS, Mohand HAMIZI, Naceur Eddine HANNACHI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 318-330 doi: 10.1007/s11709-017-0420-z

Abstract: Then the work has focused on the behavior of a RC frame with 3 levels and three bays to better visualizeplastic rotation, ultimate curvature), a strengthening by introduction of reinforced concrete walls (RC/wall) at the ends of the reinforced concrete frame (RC/frame) has been performed.The results show that these RC walls significantly improve the behavior, by a relocation of efforts towards

Keywords： RC/frame     RC/wall     moment curvature     plastic rotation     plastic hinge     pushover analysis     global models    

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Seismic analysis of semi-gravity RC cantilever retaining wall with TDA backfill

Il-Sang AHN, Lijuan CHENG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 455-469 doi: 10.1007/s11709-017-0392-z

Abstract: The seismic behavior of Tire Derived Aggregate (TDA) used as backfill material of 6.10 m high retaining walls was investigated based on nonlinear time-history Finite Element Analysis (FEA). The retaining walls were semi-gravity reinforced concrete cantilever type. In the backfill, a 2.74 m thick conventional soil layer was placed over a 3.06 m thick TDA layer. For comparison purpose, a conventional all soil-backfill model was also developed, and the analysis results from the two models under the Northridge and Takatori earthquakes were compared. The FEA results showed that both models did not experience major damage in the backfill under the Northridge earthquake. However, under the Takatori earthquake, the TDA-backfill model developed substantially large displacement in the retaining walls and in the backfill compared with the soil-backfill model. Regions of large plastic strain were mainly formed in the TDA layer, and the soil over the TDA layer did not experience such large plastic strain, suggesting less damage than the soil-backfill model. In addition, the acceleration on the backfill surface of the TDA-backfill model decreased substantially compared with the soil-backfill model. If an acceleration sensitive structure is placed on the surface of the backfill, the TDA backfill may induce less damage to it.

Keywords： TDA (Tire Derived Aggregate)     scrap tires     retaining wall     seismic analysis     Finite Element Analysis    

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Experimental study on seismic behavior of mid-rise RC shear wall with concealed truss

Wanlin CAO, Jianwei ZHANG, Jingna ZHANG, Min WANG,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 370-377 doi: 10.1007/s11709-009-0062-x

Abstract: In this paper, mid-rise shear wall with concealed truss was proposed.Therefore, it is a double composite shear wall., a mid-rise shear wall with steel frame, and four mid-rise shear wall with concealed truss made of differentBased on the experimental study, the stiffness and its attenuation, bearing capacity, ductility, hystereticSome suggestions for seismic design of shear wall are given in this paper.

Keywords： reinforced concrete     profile steel     concealed truss     mid-rise shear wall     seismic behavior    

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Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1214-1226 doi: 10.1007/s11709-019-0550-6

Abstract: A parametric computational study is conducted to investigate the shear yielding, flexural yielding, and lateral torsional buckling limit states for butterfly-shaped links. After validating the accuracy of the finite element (FE) modeling approach against previous experiments, 112 computational models with different geometrical properties were constructed and analyzed including consideration of initial imperfections. The resulting yielding moment, corresponding critical shear force, the accumulation of plastic strains through the length of links as well as the amount of energy dissipated are investigated. The results indicate that as the shape of the butterfly-shaped links become too straight or conversely too narrow in the middle, peak accumulated plastic strains increase. The significant effect of plate thickness on the buckling limit state is examined in this study. Results show that overstrength for these links (peak force divided by yield force) is between 1.2 and 4.5, with straight links producing larger overstrength. Additionally, proportioning the links to delay buckling, and designing the links to yield in the flexural mode are shown to improve energy dissipation.

Keywords： structural fuse     hysteretic damper     finite element analysis     energy dissipation     initial imperfection     butterfly-shaped    

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Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork

Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1271-1287 doi: 10.1007/s11709-019-0556-0

Abstract: The flexural performance of the ECC/RC composite beam has been investigated experimentally with eightUnder the same reinforcement configurations, ECC/RC composite beams exhibit increases in flexural performanceterms of ductility, load-carrying capacity, and damage tolerance compared with the counterpart ordinary RCtheoretical model based on the strip method is proposed to predict the moment-curvature responses of ECC/RC

Keywords： engineered cementitious composite (ECC)     durability     ECC/RC composite beam     permanent formwork     flexural    

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Effect of bond enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 131-143 doi: 10.1007/s11709-021-0787-8

Abstract: nanotubes (CNTs) in carbon fiber reinforced polymer (CFRP) on strengthening of reinforced concrete (RCThe RC beams were prepared, strengthened in flexure by externally bonded CFRP or CNTs-modified CFRP sheetsThe flexural enhancement of RC beams by strengthening with CNTs-modified CFRP decreased with increasing

Keywords： RC beams     flexural     strengthening     CFRP     CNTs     finite element    

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Investigation of the interior RC beam-column joints under monotonic antisymmetrical load

Fei GAO, Zhiqiang TANG, Biao HU, Junbo CHEN, Hongping ZHU, Jian MA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1474-1494 doi: 10.1007/s11709-019-0572-0

Abstract: The paper presents numerical findings of reinforced concrete interior beam-column joints under monotonic antisymmetrical load. The finite element models considered compression and tension damage were calibrated by test results in terms of the load-displacement, failure modes, and strains of longitudinal steel. The emphasis was put on studying the effects of hoop reinforcement ratio in joint core and the axial compression ratio on the responses of the joints. The results show that, in addition to the truss and strut-and-tie mechanisms, the confinement mechanism also existed in the joint core. A certain amount of stirrup is not only able to enhance the confinement in joint core, undertake a part of shear force and thus to increase the shear capacity, prevent the outward buckling of steel bars in column, improve the stress distribution in joint core, delay cracking and restrain the propagation of cracks, but also to increase the yield load, decrease the yield displacement of beam and improve the joint ductility. However, excessive horizontal stirrups contribute little to the joint performance. In a certain range, larger axial compression ratio is beneficial for the joint mechanical behavior, while it is negative when axial compression ratio is too large.

Keywords： RC beam-column joint     reinforcement ratio in joint core     axial compression ratio     finite element     test    

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Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials

Linxiang WANG, Roderick MELNIK, Fuzai LV

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 287-291 doi: 10.1007/s11465-011-0230-2

Abstract: In the current paper, a macroscopic differential model is constructed for the coupled hysteretic dynamics

Keywords： differential model     state space     electromechanical switching     butterfly effects     hysteresis    

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Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 606-624 doi: 10.1007/s11709-023-0925-6

Abstract: The result shows that the CSTD yields a stable hysteretic response and affords excellent energy dissipationequal-stiffness design steel tube dampers, the CSTD exhibits better energy dissipation performance, more stable hysteretic

Keywords： cambered surface steel tube damper     energy dissipation capacity     finite element model     hysteretic performance    

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Calculation of diagonal section and cross-section bending capacity for strengthening RC structure using

Shouping SHANG , Fangyuan ZHOU , Wei LIU ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 330-338 doi: 10.1007/s11709-009-0046-x

Abstract: nationwide, as well as the rapid development of innovative building materials, the adoption of strengthening RC

Keywords： RC beams     high-performance ferrocement laminate (HPFL)     inorganic material     reinforcement    

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Efficiency of scalar and vector intensity measures for seismic slope displacements

Gang WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1,   Pages 44-52 doi: 10.1007/s11709-012-0138-x

Abstract: Ground motion intensity measures are usually used to predict the earthquake-induced displacements inIn this study, the efficiency of various single ground motion intensity measures (scalar ) or a combination

Keywords： seismic slope displacements     intensity measures     empirical prediction    

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Applying the spectral stochastic finite element method in multiple-random field RC structures

Abbas YAZDANI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 434-447 doi: 10.1007/s11709-022-0820-6

Abstract: paper uses the spectral stochastic finite element method (SSFEM) for analyzing reinforced concrete (RCevaluate the sensitivity of the correlation length effects in evaluating the reliability, two examples of RC

Keywords： uncertainty     spectral stochastic finite element method     correlation length     reliability assessment     reinforced concrete beam/slab    

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Optimization design of anti-seismic engineering measures for intake tower based on non-dominated sorting

Frontiers of Structural and Civil Engineering   Pages 1428-1441 doi: 10.1007/s11709-023-0998-2

Abstract: Therefore, effective and low-cost anti-seismic engineering measures must be designed for protection.The method adopted in this study may provide significant references for designing anti-seismic measures

Keywords： intake tower     NSGA-II     mode decomposition response spectrum method     anti-seismic engineering measures    

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Unnormalized and normalized forms of gefura measures in directed and undirected networks

Raf GUNS,Ronald ROUSSEAU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 4,   Pages 311-320 doi: 10.1631/FITEE.1400425

Abstract: Common network centrality measures do not take this structure into account.Gefura measures are designed as indicators of a node’s brokerage role between such groups.make the following new contributions to their study: (1) We systematically study unnormalized gefura measuresundirected networks as equivalent to symmetric directed networks, we expand the definition of gefura measures

Keywords： Networks subdivided in groups     Partitions     Gefura measures     Q-measures     Brokerage role     Directed and    

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Title Author Date Type Operation

Estimation of relations among hysteretic response measures and design parameters for RC rectangular shear

A. ARAB, Ma. R. BANAN, Mo. R. BANAN, S. FARHADI

Journal Article

Effect of RC wall on the development of plastic rotation in the beams of RC frame structures

Amar KAHIL, Aghiles NEKMOUCHE, Said BOUKAIS, Mohand HAMIZI, Naceur Eddine HANNACHI

Journal Article

Seismic analysis of semi-gravity RC cantilever retaining wall with TDA backfill

Il-Sang AHN, Lijuan CHENG

Journal Article

Experimental study on seismic behavior of mid-rise RC shear wall with concealed truss

Wanlin CAO, Jianwei ZHANG, Jingna ZHANG, Min WANG,

Journal Article

Parametric computational study on butterfly-shaped hysteretic dampers

Ali Reza FARZAMPOUR, Matthew Roy EATHERTON

Journal Article

Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork

Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG

Journal Article

Effect of bond enhancement using carbon nanotubes on flexural behavior of RC beams strengthened with

Journal Article

Investigation of the interior RC beam-column joints under monotonic antisymmetrical load

Fei GAO, Zhiqiang TANG, Biao HU, Junbo CHEN, Hongping ZHU, Jian MA

Journal Article

Stress induced polarization switching and coupled hysteretic dynamics in ferroelectric materials

Linxiang WANG, Roderick MELNIK, Fuzai LV

Journal Article

Hysteretic behavior of cambered surface steel tube damper: Theoretical and experimental research

Journal Article

Calculation of diagonal section and cross-section bending capacity for strengthening RC structure using

Shouping SHANG , Fangyuan ZHOU , Wei LIU ,

Journal Article

Efficiency of scalar and vector intensity measures for seismic slope displacements

Gang WANG

Journal Article

Applying the spectral stochastic finite element method in multiple-random field RC structures

Abbas YAZDANI

Journal Article

Optimization design of anti-seismic engineering measures for intake tower based on non-dominated sorting

Journal Article

Unnormalized and normalized forms of gefura measures in directed and undirected networks

Raf GUNS,Ronald ROUSSEAU

Journal Article