Experimental study of the load-deformation behaviour of the precast post-tensioned continuous girder for straddle monorail: Full-scale load test under service and ultimate loading conditions

Sirisonthi, Athasit; Suparp, Suniti; Joyklad, Panuwat; Hussain, Qudeer; Julphunthong, Phongthorn

doi:10.1016/j.cscm.2021.e00666

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…The aim of their study was to verify the structural response in terms of crack appearance and deflection of the middle girder. The reinforcement details of the girder were similar to the middle girder of previous study conducted by Sirisonthi et al 2021 15 . The authors reported that the failure of the FPP girder under ultimate load was accompanied by severe crushing of concrete at top face of mid‐span along with bearing failure 16 .…”

Section: Introductionsupporting

confidence: 68%

“…The reinforcement details of the girder were similar to the middle girder of previous study conducted by Sirisonthi et al 2021. 15 The authors reported that the failure of the FPP girder under ultimate load was accompanied by severe crushing of concrete at top face of mid-span along with bearing failure. 16 There is still need to further investigate structural behavior of single span end girders in precast posttensioned continuous girder system for straddle monorails.…”

Section: Introductionsupporting

confidence: 57%

“…The girder system was designed in such a way to produce maximum positive moment at the middle girder and negative moments at the ends of middle girder. The authors reported severe flexural cracks at the middle girder along with the sever crushing of the concrete near supports 15 . Further, Suparp et al 2022 16 investigate the flexural behavior of the single span middle girder.…”

Section: Introductionmentioning

confidence: 99%

“…The authors reported severe flexural cracks at the middle girder along with the sever crushing of the concrete near supports. 15 Further, Suparp et al 2022 16 investigate the flexural behavior of the single span middle girder. The aim of their study was to verify the structural response in terms of crack appearance and deflection of the middle girder.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionsupporting

confidence: 68%

Section: Introductionsupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…At present, the actual bearing capacity is assessed mainly according to the reduction and correction of the design bearing capacity, based on the limit state method for highway bridges in China. The actual ultimate bearing capacity can be obtained by carrying out failure tests of bridges, which are about to be torn down [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental-Numerical Study on the Flexural Ultimate Capacity of Prestressed Concrete Box Girders Subjected to Collision

et al. 2022

Materials

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Precise evaluation for flexural ultimate capacity of bridges which are subjected to the collision of over-height trucks is essential for making decisions on corresponding maintenance, strengthening or replacement. When the span of a cross-line continuous bridge with a double-box girder was hit by an overly high vehicle, the concrete floor of one girder was severely damaged, and part of the prestressed strands and reinforcements in the girder were broken. After the double-box girder was removed and separated into two single box girders, the ultimate flexural capacity of both box girders was studied by destructive tests, and a comparison was made between the damaged and undamaged girders. Moreover, finite element analysis was conducted to simulate the failure process. The results show that the flexural bearing capacity of the damaged box girder decreased by 33%, but it was still 1.07 times greater than the design bearing capacity, which basically meets the design requirements. Also, the damaged box girder showed a desirable serviceable limit state for three-axle vehicles and five-axle vehicles, but showed an undesirable serviceable limit state for six-axle vehicles. This study shows that repairing or strengthening the damaged span may be better than demolishing and rebuilding the whole superstructure bridge.

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Experimental and Theoretical Study on the Shear Performance of Single-Box Double-Compartment Segmental Box Girder

Fan,

Wu,

Liu

et al. 2024

KSCE J Civ Eng

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Experimental study of the load-deformation behaviour of the precast post-tensioned continuous girder for straddle monorail: Full-scale load test under service and ultimate loading conditions

Cited by 5 publications

References 23 publications

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

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

Experimental-Numerical Study on the Flexural Ultimate Capacity of Prestressed Concrete Box Girders Subjected to Collision

Experimental and Theoretical Study on the Shear Performance of Single-Box Double-Compartment Segmental Box Girder

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