Experimental study of CFST embedded precast concrete bridge column-foundation connection with studs

Jiao, Chiyu; Liu, Wenbo; Li, Yangjie; Shi, Wenhao; Long, Peiheng

doi:10.1016/j.soildyn.2023.107826

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…Moreover, the complex nature of component junctions necessitates a thorough scholarly investigation into CFST connectivity issues. As a result, numerous scholars have undertaken studies to address the connection challenges associated with CFSTs [3][4][5][6][7][8]. Song et al [9] explored load introduction and transfer mechanisms in K-type connections in steel-encased CFSTs, while Zhou et al [10] brought innovation to the design of circular 2 of 23 CFST pier connections known as CECCs.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Precast Circular Semi-Continuous CFST Columns under a Uniaxial Eccentric Load

Cao,

Zhu,

Qian

et al. 2024

Buildings

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For this study, we conducted a detailed examination and comprehensive comparative analysis of the structural responses and mechanical behavior of bolted sleeve connections in precast circular semi-continuous steel tubular concrete (PCSCFST) columns. The research involved fourteen specimens, and we considered the impacts of various parameters, including eccentricity, external steel sleeve thickness, bolt diameter, and slenderness ratio. The findings revealed that the external steel sleeve significantly enhances the protection of the connection area, enabling the bolts to effectively withstand eccentric loads. However, sleeves that are too thick may lead to premature bolt failure, reducing their ultimate load-bearing capacity. Using bolts to transfer loads to the concrete significantly strengthens the restraining effect of the steel sleeve. Nonetheless, increasing the bolt diameter beyond a certain threshold may diminish this beneficial impact, potentially leading to connection failure and a decrease in ultimate load-bearing capacity. A new ‘cooperative value q’ measures component collaboration at ultimate capacity, showing that shorter columns offer less effective coordination than longer ones. Through regression analysis, we formulated a prediction for axial ultimate bearing capacity, closely aligning with the experimental data (Npre-a/Nu average value of 1.003, variance 0.00248). Three N–M curves, including the Eurocode 4 method, offered conservative predictions, with Eurocode 4 closely matching the experimental results. A refined prediction method following Eurocode 4 was developed, yielding an average Ppre-U/Pu value of 0.971 and a variance of 0.0107.

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Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Precast Circular Semi-Continuous CFST Columns under a Uniaxial Eccentric Load

Cao,

Zhu,

Qian

et al. 2024

Buildings

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“…At present, ABC gradually develops in the direction of low carbonization and assembly. The industrialization-oriented ABC characterized by standardized design, industrial prefabrication and assembly construction is ushering in unprecedented development opportunities [11,12] and it is the general trend for modern bridge construction to move towards a higher level of assembly. The large-scale application of low-carbon and assembled (LA) bridge technology [13,14] with multiple performance attributes, such as an excellent structural quality, weak environmental impact, less traffic interference, low construction cost and rapid on-site assembly, can open up a new situation for the integration and development of digital technology, intelligent manufacturing, rapid assembly and intelligent equipment industry and promote the development of the industrial chain of the process, equipment, management and maintenance [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Accelerated Bridge Construction Case: A Novel Low-Carbon and Assembled Composite Bridge Scheme

Kang,

Xu,

et al. 2024

Buildings

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Modern bridge construction towards a higher degree of low carbonization and assembly has been the general trend, while developing and broadening the low-carbon and assembled-oriented Accelerated Bridge Construction (ABC) technology can better realize the trade-offs between construction quality, efficiency, cost and sustainability. In the current mainstream ABC technologies such as precast-assembled concrete bridge and assembled steel bridge schemes, it is difficult to achieve an excellent balance between the above multicriterion trade-offs. To this end, this paper proposes a novel low-carbon and assembled composite bridge scheme as an innovative case of ABC technology based on a 26.7 km-length urban viaduct project in China with urgent environmental protection and assembly demands. Construction sustainability, the comprehensive economy and low-carbon performance are well balanced by the collaborative application of new steel–concrete composite structures, the rapid assembly interface design and low-carbon material technologies. The proposed scheme has been applied to a completed real-scale bridge, and the whole construction process only experienced 105 days of effective time, accompanied with slight environmental interference and construction noise and a small amount of labor and equipment input. In addition, the safety of the bridge, the rationality of the design concept and the calculation method have been verified by the static and dynamic loading tests of the real-scale bridge.

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Shear performance and failure mechanism of socket CFST column-beam connection with UHPC grouting

Su,

Zhang,

et al. 2024

Engineering Structures

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Experimental study of CFST embedded precast concrete bridge column-foundation connection with studs

Cited by 7 publications

References 15 publications

Mechanical Behavior of Precast Circular Semi-Continuous CFST Columns under a Uniaxial Eccentric Load

Mechanical Behavior of Precast Circular Semi-Continuous CFST Columns under a Uniaxial Eccentric Load

Accelerated Bridge Construction Case: A Novel Low-Carbon and Assembled Composite Bridge Scheme

Shear performance and failure mechanism of socket CFST column-beam connection with UHPC grouting

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