Spatial stability of pre-stressed mono-symmetric steel beams with un-bonded/bonded deviators under compression and end moments

Kim, Moon-Young; Mehdi, Agha Intizar; Hayat, Umar

doi:10.1016/j.jcsr.2021.107078

Cited by 12 publications

(2 citation statements)

References 12 publications

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“…Especially for steel columns with a large slenderness ratio (> 150), the strength reduction is even as high as 70% due to stability problems, seriously reducing the strength utilization rate of steel columns in actual engineering [2,3]. The research results showed that the strength and stability of steel structures subjected to prestressing can be significantly improved if the prestressing method is reasonable [4,5]. The prestressed steel structure can save materials and funds, ensure safety, and reduce deformation [6,7].…”

Section: Introductionmentioning

confidence: 98%

Study on buckling performance of a new type of double-steering prestressed plate-column

2023

Preprint

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This study proposes a new type of prestressed stayed column. The traditional prestressed stayed beam-column does not consider the end constraint, whereas the new double-steering prestressed plate column exploits the end constraint while accounting for the middle bending deformation. The sliding form is utilized in this study for the connection part to prevent the prestressed steel cable from breaking at the pole. The results indicated that adding the steering brace improves the core steel column's stable bearing capacity and stiffness. The bearing capacity of the double-steering prestressed plate column is 4.51 times that of the non-prestressed bearing column, 2.43 times that of the characteristic buckling load of the currently prevalent single-transverse prestressed beam-column, and 1.51 times that of the traditional three-transverse prestressed beam-column. The influence of prestress magnitude, effective length, buckling mode, and double-steering plate-column details are investigated. The research findings further enrich and enhance the theory and types of prestressed stayed columns and provide guidance for applying new double-steering prestressed plate-column in practical engineering.

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Section: Introductionmentioning

confidence: 98%

Study on buckling performance of a new type of double-steering prestressed plate-column

2023

Preprint

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“…The steel column's primary function is to bear loads, while the cable, only enduring tensile forces, is pivotal in elevating the steel column's load-bearing capacity. The brace transfers the cable prestress to the steel column, constraining column deformation and is typically integrated with the steel column [6]. The introduction and application of prestressed columns are significantly beneficial in enhancing the load-bearing efficiency of structural columns [7].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Elastoplastic Stable Bearing Capacity of Double-Steering Prestressed Plate Columns

Li,

Yin

et al. 2023

Buildings

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This study investigates the elastoplastic stable bearing capacity of prestressed columns. The end restraint of the novel dual-steering plate brace prestressed column is enhanced, augmenting the efficiency of utilizing steel material. The elastoplastic stable bearing capacity of this new prestressed column is 5.41 times greater than that of a standard non-prestressed column. In contrast, the traditional prestressed columns with identical parameters show only a 2.49 to 3.55 times increase. In addition, this study conducts parameter optimization on the prestressed value, the position of the transverse brace, and the size of the transverse brace in the prestressed column. The buckling load escalates rapidly with an increase in the prestress value within a specific range and then diminishes gradually. The bearing capacity peaks when the transverse brace is positioned at the midpoint. As the size of the transverse brace expands, the load-bearing capacity initially rises linearly and subsequently stabilizes. The findings on the elastoplastic stable bearing capacity and parameter optimization are significantly relevant for practical engineering applications.

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Experimental Evaluation on LTB Strength of Steel Beams Externally Pre-stressed with Un-bonded Tendon Bar

Kim,

Mehdi,

Kim

2024

Int J Steel Struct

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Spatial stability of pre-stressed mono-symmetric steel beams with un-bonded/bonded deviators under compression and end moments

Cited by 12 publications

References 12 publications

Study on buckling performance of a new type of double-steering prestressed plate-column

Study on buckling performance of a new type of double-steering prestressed plate-column

A Study on the Elastoplastic Stable Bearing Capacity of Double-Steering Prestressed Plate Columns

Experimental Evaluation on LTB Strength of Steel Beams Externally Pre-stressed with Un-bonded Tendon Bar

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