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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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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 functionsrelations among cyclic behavioral measures and design parameters have been investigated for rectangular RCThe 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 curvatures

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

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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.This new composite shear wall includes two kinds of composition: one is the composition of two bearingTherefore, 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 differentSome 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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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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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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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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Determination of shear strength of steel fiber RC beams: application of data-intelligence models

Abeer A. AL-MUSAWI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 667-673 doi: 10.1007/s11709-018-0504-4

Abstract: Accurate prediction of shear strength of structural engineering components can yield a magnificent information modeling and predesign process. This paper aims to determine the shear strength of steel fiber reinforced concrete beams using the application of data-intelligence models namely hybrid artificial neural network integrated with particle swarm optimization. For the considered data-intelligence models, the input matrix attribute is one of the central element in attaining accurate predictive model. Hence, various input attributes are constructed to model the shear strength “as a targeted variable”. The modeling is initiated using historical published researches steel fiber reinforced concrete beams information. Seven variables are used as input attribute combination including reinforcement ratio ( ), concrete compressive strength ( ), fiber factor ( ), volume percentage of fiber ( ), fiber length to diameter ratio ( ) effective depth ( ), and shear span-to-strength ratio ( ), while the shear strength ( ) is the output of the matrix. The best network structure obtained using the network having ten nodes and one hidden layer. The final results obtained indicated that the hybrid predictive model of ANN-PSO can be used efficiently in the prediction of the shear strength of fiber reinforced concrete beams. In more representable details, the hybrid model attained the values of root mean square error and correlation coefficient 0.567 and 0.82, respectively.

Keywords： hybrid intelligence model     shear strength     prediction     steel fiber reinforced concrete    

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Numerical simulation and analysis for collapse responses of RC frame structures under earthquake

Fuwen ZHANG, Xilin LU, Chao YIN,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 364-369 doi: 10.1007/s11709-009-0061-y

Abstract: In this paper, a discrete element model for collapse simulation of RC frame structure is constructedBased on the discrete element model, a computer program is developed to simulate the whole process of RCprogram developed based on the new model can realistically simulate the seismic collapse process of RC

Keywords： discrete element method     failure criteria     contact-impact     simulation program    

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Limit of axial force ratio and requirement for stirrups of RC columns with special shape

WANG Yiqun, XU Yidong, ZHAO Yanjing, CHEN Yunxia

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 176-181 doi: 10.1007/s11709-007-0019-x

Abstract: limit of the axial force ratio and circumstantial requirement for stirrups of an reinforced concrete (RCThen, the effect of stirrup arrangement on the ductility of the RC column is discussed in case of bucklingThe complete requirement for stirrups of RC column with special shape is given.

Keywords： reinforced concrete     circumstantial requirement     buckling     stirrup     longitudinal reinforcement    

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Numerical simulation of squat reinforced concrete wall strengthened by FRP composite material

Ali KEZMANE,Said BOUKAIS,Mohand Hamizi

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4,   Pages 445-455 doi: 10.1007/s11709-016-0339-9

Abstract: The intent of this paper is to present a numerical simulation of squat reinforced concrete wall strengthened

Keywords： simulation     strengthening     reinforced concrete wall     squat wall     FRP composite material     damage     Abaqus    

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Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 376-382 doi: 10.1007/s11709-010-0086-2

Abstract: Pre-tensioned high strength trusses using alloy steel bar are widely used as glass wall supporting systemsIt is not uncommon to see many similar glass wall systems fail in the wind load test chambers under a

Keywords： tension system     glass wall     nonlinear analysis     pre-tensioning     second-order analysis    

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Experiment and calculation on seismic behavior of RC composite core walls with concealed steel truss

Wanlin CAO , Weihua CHANG , Changjun ZHAO , Jianwei ZHANG ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 255-261 doi: 10.1007/s11709-009-0043-0

Abstract: Two 1/6 scale core wall specimens, including a normal reinforced concrete core wall and a reinforcedconcrete composite core wall with concealed steel truss, were designed.

Keywords： reinforced concrete     steel truss     core walls     seismic performance    

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Title Author Date Type Operation

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

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

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

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

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

Shouping SHANG , Fangyuan ZHOU , Wei LIU ,

Journal Article

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

Abbas YAZDANI

Journal Article

Determination of shear strength of steel fiber RC beams: application of data-intelligence models

Abeer A. AL-MUSAWI

Journal Article

Numerical simulation and analysis for collapse responses of RC frame structures under earthquake

Fuwen ZHANG, Xilin LU, Chao YIN,

Journal Article

Limit of axial force ratio and requirement for stirrups of RC columns with special shape

WANG Yiqun, XU Yidong, ZHAO Yanjing, CHEN Yunxia

Journal Article

Numerical simulation of squat reinforced concrete wall strengthened by FRP composite material

Ali KEZMANE,Said BOUKAIS,Mohand Hamizi

Journal Article

Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Journal Article

Experiment and calculation on seismic behavior of RC composite core walls with concealed steel truss

Wanlin CAO , Weihua CHANG , Changjun ZHAO , Jianwei ZHANG ,

Journal Article