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Nonlinear numerical simulation of punching shear behavior of reinforced concrete flat slabs with shear-heads

Dan V. BOMPA, Ahmed Y. ELGHAZOULI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 331-356 doi: 10.1007/s11709-019-0596-5

Abstract: This paper examines the structural response of reinforced concrete flat slabs, provided with fully-embeddedPractical recommendations are also provided for the design of shear-heads in RC slabs, including the

Keywords： non-linear numerical modelling     concrete damage plasticity     RC flat slabs     shear-heads     punching shear    

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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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Quantitative analysis of microplastics in coastal tidal-flat reclamation in Dongtai, China

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1528-5

Abstract:

• Reclamation projects are important disturbances on microplastic risk in coasts.

Keywords： Coastal reclamation     Engineering geotextiles     Soil microplastics     Weathering simulation     Marine emission    

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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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Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 471-476 doi: 10.1007/s11705-011-1130-z

Abstract: The magnetohydrodynamic (MHD) boundary layer slip flow and solute transfer over a porous plate in the presence of a chemical reaction are investigated. The governing equations were transformed into self-similar ordinary differential equations by adopting the similarity transformation technique. Then the numerical solutions are obtained by a shooting technique using the fourth order Runge-Kutta method. The study reveals that due to the increase in the boundary slip, the concentration decreases and the velocity increases. On the other hand, with an increase in the magnetic field and mass suction, both boundary layer thicknesses decreased. As the Schmidt number and the reaction rate parameter increases, the concentration decreases and the mass transfer increases.

Keywords： slip flow     MHD boundary layer     reactive solute diffusion     flat plate     suction/injection    

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Effects of sheet thickness and material on the mechanical properties of flat clinched joint

Chao CHEN, Huiyang ZHANG, Shengdun ZHAO, Xiaoqiang REN

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 410-419 doi: 10.1007/s11465-020-0618-y

Abstract: The flat clinching process is attracting a growing attention in the joining field of lightweight materialsThe flat clinching process has a great potential in joining dissimilar and various thickness materials

Keywords： clinched joint     flat clinching process     thickness configuration     material configuration     mechanical property    

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Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 301-310 doi: 10.1007/s11705-012-1204-6

Abstract: High performance polyvinylidene fluoride (PVDF) flat sheet ultrafiltration (UF) membranes have been prepared

Keywords： polyvinylidene fluoride     perfluorosulfonic acid     polyethylene glycol     flat sheet membrane     ultrafiltration    

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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 RCbeams and slabs have been investigated.

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

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Strengthening of the concrete face slabs of dams using sprayable strain-hardening fiber-reinforced cementitious

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2,   Pages 145-160 doi: 10.1007/s11709-022-0806-4

Abstract: strain-hardening fiber-reinforced cementitious composites (FRCC) were applied to strengthen the concrete slabsanalytical investigations were carried out to understand the flexural properties of FRCC-layered concrete slabsIt was found that the FRCC layer improved the flexural performance of concrete slabs significantly.a simplified analytical method were developed for the design and analysis of FRCC-layered concrete slabs

Keywords： strain-hardening cementitious composites     engineered cementitious composites     sprayable     shotcrete     strengthening     concrete-face rockfill dam     digital image correlation    

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Modeling of Ce(IV) transport through a dispersion flat combined liquid membrane with carrier P507

Liang PEI,Liming WANG,Zhanying MA

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4,   Pages 503-509 doi: 10.1007/s11783-013-0540-1

Abstract: mathematical model for the transport of Ce(IV) from hydrochloric acid solutions through dispersion flat

Keywords： Dispersion flat combined liquid membrane (DFCLM)     dispersion phase     feed phase     2-ethyl hexyl phosphonic    

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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 and

Keywords： RC wall hysteretic measures     RC wall design parameters     empirical relations     numerical simulations     RC rectangular    

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Ballistic behavior of plain and reinforced concrete slabs under high velocity impact

Chahmi OUCIF, Luthfi Muhammad MAULUDIN, Farid Abed

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 299-310 doi: 10.1007/s11709-019-0588-5

Abstract: simulation of ballistic penetration and high velocity impact behavior of plain and reinforced concrete slabsIn this paper, we focus on the comparison of the performance of the plain and reinforced concrete slabsvary between 540 and 731 m/s. 6 mm of steel reinforcement bars were used in the reinforced concrete slabs

Keywords： Johnson-Holmquist-2     Johnson-Cook     reinforced concrete     damage     impact loads    

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Title Author Date Type Operation

Nonlinear numerical simulation of punching shear behavior of reinforced concrete flat slabs with shear-heads

Dan V. BOMPA, Ahmed Y. ELGHAZOULI

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

Quantitative analysis of microplastics in coastal tidal-flat reclamation in Dongtai, China

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

Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

Journal Article

Effects of sheet thickness and material on the mechanical properties of flat clinched joint

Chao CHEN, Huiyang ZHANG, Shengdun ZHAO, Xiaoqiang REN

Journal Article

Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

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

Strengthening of the concrete face slabs of dams using sprayable strain-hardening fiber-reinforced cementitious

Journal Article

Modeling of Ce(IV) transport through a dispersion flat combined liquid membrane with carrier P507

Liang PEI,Liming WANG,Zhanying MA

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

Ballistic behavior of plain and reinforced concrete slabs under high velocity impact

Chahmi OUCIF, Luthfi Muhammad MAULUDIN, Farid Abed

Journal Article