An Adjustment Technique for Tensions in the Cables of Concrete Cable-Stayed Bridges considering the Effect of Cable-Girder Temperature Difference

Ma, Niujing; Gu, Liangcai; Peng, Chang-Li

doi:10.1007/s12205-021-1145-z

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…The proposed method can dramatically reduce the number of stay cables. Ma et al (2021) proposed a new adjustment technique for tension adjustment. During the tension adjustment, the relative variable quantities of the tensions are regarded as the control values, while the vertical displacement in the midspan section of the main span is regarded as the verification value.…”

Section: Introductionmentioning

confidence: 99%

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A tensioning control method for stay cables with super large tonnage cable force

Wang,

Zhang,

Xiao

et al. 2024

IJSI

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PurposeEffectively solving the large tonnage cable in the construction process due to the tensioning method of the inclined cable often appears in the overall cable force and the design value of the deviation is large, cable internal strand force is not uniform, the main girder stress exceeds the limit of the problem affecting the safety of the structure.Design/methodology/approachIn this study, the finite element method and theoretical analysis method are utilized to propose a construction control method of tensioning the whole bunch of diagonal cables in two parts according to the deformation coordination relationship between the main girder and the diagonal cables. This methodology was implemented during the actual construction of the PAIRA Bridge in Bangladesh.FindingsTests conducted on cable-stayed bridges using this controlled tensioning method demonstrate that the measured cable strength of a single strand exhibits an error of less than 0.15% compared to the design target cable strength. The deviation between the measured and designed cable forces ranges from 0.16% to 0.27%. Furthermore, no tensile stress is observed in both the top plate and bottom plate of the root section of the main girder, indicating a state of full-section compression throughout the entire construction process.Originality/valueThrough the comparison with the test value, it can be proved that the whole bunch of diagonal cable tensioned in two parts of the construction control method proposed in this paper can make the internal strand force more uniform, to meet the precision requirements of the site construction, to protect the safety of the bridge construction process. The method proposed in this paper is highly accurate, easy to calculate, and has a high value of popularization and application.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The proposed method can dramatically reduce the number of stay cables. Ma et al . (2021) proposed a new adjustment technique for tension adjustment.…”

Section: Introductionmentioning

confidence: 99%

A tensioning control method for stay cables with super large tonnage cable force

Wang,

Zhang,

Xiao

et al. 2024

IJSI

View full text Add to dashboard Cite

show abstract

“…Besides, the influence of thermal action of the roof system is generally not considered in the design, and the temperature stress is usually estimated simply and roughly. In areas with large temperature differences, the diurnal and annual variations of temperature are 40°C and 100°C respectively (Wang et al, 2010;Liu et al, 2012;Ma et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Mechanical Properties of Continuous Welding Stainless Steel Roof System under Temperature Effect

Wang

Xin³

et al. 2022

KSCE Journal of Civil Engineering

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Stainless steel is used as a new generation of long-span metal roof systems with continuous welding technology, which exhibits many unknown behaviors during temperature action. This study focuses on the temperature effect of a continuous welded stainless steel roof (CWSSR) system and analyzes the stress distribution of plate rib (PR), plate surface (PS), and support (SU), and the horizontal and vertical displacement. Furthermore, the thermal action of the CWSSR system is comprehensively analyzed considering different loading rates, constant temperature time, and the cycle number. Research results show that the stress concentration and thermal expansion of the CWSSR system are obvious, and fatigue damage occurs under long-term temperature action. The responses of the CWSSR system are greatly influenced by the loading rate and the cycle number but are less influenced by the constant temperature time. Loading rate and the cycle number mainly affect the plate surface stress and vertical displacement. The plate surface stress and vertical displacement peak increased by 34.6% and 29.6% with the loading rate, and changed by 32.4% and 42.5% with the cycle number. Cyclic loading reduces support tensile capacity by 4.4%. The research results can provide reference for the design and application of temperature field resistance of the CWSSR system.

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Prestress Tension Measurement Using a Single Electromagnetic Sensor

Guo,

Deng,

et al. 2023

KSCE Journal of Civil Engineering

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An Adjustment Technique for Tensions in the Cables of Concrete Cable-Stayed Bridges considering the Effect of Cable-Girder Temperature Difference

Cited by 4 publications

References 16 publications

A tensioning control method for stay cables with super large tonnage cable force

A tensioning control method for stay cables with super large tonnage cable force

Experimental Study on Mechanical Properties of Continuous Welding Stainless Steel Roof System under Temperature Effect

Prestress Tension Measurement Using a Single Electromagnetic Sensor

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