Finite Element Analysis of Reinforced Concrete Pile Cap using ATENA

Chaimahawan, Preeda; Suparp, Suniti; Joyklad, Panuwat; Hussain, Qudeer

doi:10.1590/1679-78256290

Cited by 11 publications

(7 citation statements)

References 10 publications

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“…In terms of peak loads, a close match between experimental and analytical values was observed for both the strengthened beams, as can be seen in Table 8 . Similar trends have been also reported by Olteanu et al 2011 [ 49 ] and Chaimahawan et al 2021 [ 50 ].…”

Section: Resultssupporting

confidence: 91%

Flexural Behavior of Natural Hybrid FRP-Strengthened RC Beams and Strain Measurements Using BOTDA

et al. 2021

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Experimental and finite element analysis results of reinforced concrete beams under monotonic loading were presented in this study. In the experimental program, one beam was tested in an as-built condition. The other two beams were strengthened using natural hybrid FRP layers in different configurations. The natural hybrid FRP composite was developed by using natural jute FRP and basalt FRP. One of the most appealing advantages of natural fiber is its beneficial impact on the environment, which is necessary for the sustainability recognition as an alternative to synthetic FRP. The hybrid FRP was applied to the bottom concrete surface in one beam, while a U-shaped strengthening pattern was adopted for the other beam. The flexural behavior of each beam was assessed through strain measurements. Each beam was incorporated with conventional strain gages, as well as the Brillouin Optical Time Domain Analysis (BOTDA) technique. BOTDA has its exclusive advantages due to its simple system architecture, easy implementation, measurement speed, and cross-sensitivity. The experimental results revealed that the beam strengthened with the U-shaped hybrid FRP composite pattern had a better flexural response than the other counterpart beams did both in terms of peak loads and maximum bottom longitudinal steel bar strains. Beams B-01 and B-02 exhibited 20.5% and 28.4% higher energy dissipation capacities than the control beam did, respectively. The ultimate failure of the control beam was mainly due to the flexural cracks at very low loads, whereas the ultimate failure mode of FRP composite-strengthened beams was due to the rupture of the hybrid FRP composite. Further, strain measurements using BOTDA exhibited similar patterns as conventional strain gage measurements did. However, it was concluded that BOTDA measurements were substantially influenced by the bottom flexural cracks, ultimately resulting in shorter strain records than those of conventional strain gages. Nonlinear structural analysis of the beams was performed using the computer program ATENA. The analytical results for the control beam specimen showed a close match with the corresponding experimental results mainly in terms of maximum deflection. However, the analytical peak load was slightly higher than the corresponding experimental value.

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Section: Resultssupporting

confidence: 91%

Flexural Behavior of Natural Hybrid FRP-Strengthened RC Beams and Strain Measurements Using BOTDA

et al. 2021

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“…All the reinforcement bars were modelled with an assumption of perfect bond to concrete macroelements. The SBETA (StahlBETonAnalyse) CC3DNonLinCementitious2 material model was used to calibrate the nonlinear behavior of concrete in tension and compression, based on the recommendations from other researches [5]- [8]. All the nonlinear concrete parameters were automatically calculated by the software using the mean cubic strength of concrete determined experimentally.…”

Section: Stress [Mpa]mentioning

confidence: 99%

Finite element analysis on composite steel-concrete shear walls with centered and staggered openings

Todea,

Popescu,

Dan

et al. 2024

IOP Conf. Ser.: Mater. Sci. Eng.

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Present paper presents a comparative study made on the seismic performance of composite steel-concrete shear walls with rectangular openings, by performing numerical analyses using ATENA 3D software. Two specimens were designed at a reduced scale 1:3 having similar arrangements in the cross-section and the same geometry. First element was conceived with centered openings while the second one was designed with staggered openings. Steel connectors disposed as horizontal stiffeners were used to design and to assure the full connection between the structural steel profiles embedded in the edges and the concrete core. The openings that were considered on each story of the walls, were having the dimension of a common architectural door. A part of the results recorded from the experimental tests were used to calibrate the numerical models. This study aims to establish the seismic performance and to investigate the influence of the openings and the geometric position on the overall seismic behavior of the composite shear walls. Key parameters which describe the seismic performance of structural elements such: bearing capacity, deformation capacity, stiffness degradation, cracks and strain development are compared between the specimens and discussed. The results showed that different arrangements of the openings could significantly modify or increase the seismic performance of the composite structural walls.

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“…Its salient features lie among its friendly interface, built‐in material models, and efficient convergent solutions. ATENA can analyze the actual performance of bridge structures 22–24 . FPP girder was analyzed using the built‐in material models of steel, concrete, and other materials.…”

Section: Finite Element Analysismentioning

confidence: 99%

“…ATENA can analyze the actual performance of bridge structures. [22][23][24] FPP girder was analyzed using the built-in material models of steel, concrete, and other materials. Concrete and steel were modeled using constitutive laws defined by "CC3DNonLinCementitious2" and "CCReinforcement material model", respectively.…”

Section: Rosette Strainmentioning

confidence: 99%

Structural behavior of full‐scale precast posttensioned girder with substandard transverse reinforcement–experimental and analytical study

Joyklad

Sirisonthi

Chaiyasarn

et al. 2022

Structural Concrete

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Rapid expansion of developed cities create problems mainly attributed to traffic congestions. Recently, Bangkok has faced rapid growth and the expanded neighborhoods require convenient public transport to be linked with central Bangkok and other parts of Thailand. Monorails can be an exceptional alternative to conventional skylines and subways thankfully to their excellent climbing abilities, lower noise, shorter constructions periods, and their capabilities to be adapted within limited spaces. Recently, Mass Rapid Transit Authority adopted monorail system to facilitate public in Bangkok's expanding neighborhoods. A four‐span continuous posttensioned girder system has been proposed for the straddle monorail system. Current study focuses on the structural response of full‐scale precast posttensioned (FPP) end girders in the proposed monorail system. Results suggested that the girder remained undamaged under service load while exhibiting a linear load versus vertical deflection response. Failure under ultimate load was accompanied by crushing of concrete, buckling of compression longitudinal bars and posttension tendons at the midspan. Further, experimental rosette strains suggested that concrete strains remained well below the ultimate of strains in the vicinity of high shear zones of the girder. Therefore, these results augment that the proposed design practice is safe against shear and the proposed girder can safely be used as the end girder in four‐span straddle monorail system. Nonlinear analysis of the girder was performed using advanced tool for engineering nonlinear analysis by adopting its built‐in constitutive laws for concrete and steel reinforcement. Predicted analytical response of FPP was in good agreement with experimental results in terms of load‐deflection curves, crack patterns, and failure mode.

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Finite Element Analysis of Reinforced Concrete Pile Cap using ATENA

Cited by 11 publications

References 10 publications

Flexural Behavior of Natural Hybrid FRP-Strengthened RC Beams and Strain Measurements Using BOTDA

Flexural Behavior of Natural Hybrid FRP-Strengthened RC Beams and Strain Measurements Using BOTDA

Finite element analysis on composite steel-concrete shear walls with centered and staggered openings

Structural behavior of full‐scale precast posttensioned girder with substandard transverse reinforcement–experimental and analytical study

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