Construction sequence analysis of long-span cable-stayed bridges

Granata, Michele Fabio; Longo, Giuseppe; Recupero, Antonino; Arici, Marcello

doi:10.1016/j.engstruct.2018.07.064

Cited by 29 publications

(10 citation statements)

References 16 publications

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“…e full construction process of the bridge was simulated by the method of construction stage analysis [22,23], including the original erection procedure and the later retrofitting process during operation (such as replacement of the closure segment, refurbishment of deck pavement, and replacement of cable stays). e initial finite-element model was first developed by performing the simulation of actual and full process of the bridge.…”

Section: Adjustment Of Tension In New Cable Staysmentioning

confidence: 99%

Replacement of Cable Stays in Yonghe Bridge in Tianjin, China

2020

Advances in Civil Engineering

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Cable replacement is one of the most important approaches for retrofitting an existing cable-stayed bridge. The Yonghe Bridge opened to traffic in 1987 and was the largest concrete cable-stayed bridge in Asia at the time. After nearly 20 years in service, its stay-cable system was completely replaced. The present paper details the key technical points of cable replacement in this bridge, including causes of replacement, cable replacement design, construction monitoring during replacement, and cable tension tuning after replacement. Based on the measurements during construction, the variation in structural condition indexes was thoroughly investigated, such as cable forces throughout the bridge, geometry profile of bridge deck, and tower horizontal displacements. The structural changes due to cable replacement were evaluated, and then, a relatively desirable scheme of cable adjustment was correspondingly put forward. The measured results showed that, influenced by the accumulated tolerances of cable forces during construction, cable replacement may often lead to a further deviation of structural condition. In this instance, cable adjustment is an effective compensation measure to improve the overall structural condition of the bridge. The practice of cable replacement in the Yonghe Bridge has provided some valuable experience or beneficial references for the similar retrofitting cases.

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Section: Adjustment Of Tension In New Cable Staysmentioning

confidence: 99%

Replacement of Cable Stays in Yonghe Bridge in Tianjin, China

2020

Advances in Civil Engineering

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“…en, the initial cable force of the bridge can be achieved. Granata et al [9] put forward a procedure for determining the initial cable force, considering the geometric nonlinearity of stayed cable through the Dischinger equivalent elastic modulus. Fabbrocino et al [10] developed a procedure for the optimization of cable force in order to achieve the desired bending moment distribution through the application of a self-equilibrated state of stress induced by the optimum pretensioning cable force.…”

Section: Introductionmentioning

confidence: 99%

Linear Control Method for Arch Ring of Oblique‐Stayed Buckle Cantilever Pouring Reinforced Concrete Arch Bridge

Liu

Zhou

et al. 2021

Advances in Civil Engineering

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Yelang Lake Bridge is the largest cantilevered single-chamber reinforced concrete arch bridge in China, with a net span of 210 m. In this article, an equation for positioning the height of the formwork before pouring of the arch ring segment was derived, which was suitable for the construction control of the long-span reinforced concrete arch bridge such as the Yelang Lake Bridge. The arch ring segment elevation calculation equation was derived under the two typical working conditions that the concrete pouring of the arch ring segment is completed and the buckle cable and anchor cable tensioning are completed. In addition, two typical working conditions of arch ring segment concrete pouring and cable tensioning were evaluated. Then, a new type of cradle and loading test of the cradle, which meet the requirements of the long segment pouring of the arch ring, were introduced. Finally, the measurement deviation during the construction of the arch segment was analyzed. The linear control results of the arch ring showed that the arch ring segment elevation calculation formula could effectively ensure the accuracy of the arch ring segment construction process under the two typical conditions of completion of concrete pouring of the arch ring segment and completion of the buckle and anchor cable tensioning. The maximum deviation is only 3.1 mm. The line shape after the completion of the arch ring construction was in good agreement with the target line shape, and the deviation between the measured value and the target value was only 2.5 cm, which met the engineering requirements.

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“…Moreover, on the stressing sequence of stays, Granata and Recupero et al [29] found that the geometry of the arch shape, the design of the arch-tie joint, and the construction sequence can significantly modify the global behaviour in terms of the stress state and deformed configuration. The determination of initial cable forces in cable-stayed bridges is an important first step in design and analysis of the structure under external loads [30].Then, they proposed a unified procedure for determining the initial cable forces and for analyzing the entire sequence, and a forward procedure was implemented to follow the actual sequence of construction by extending a procedure already applied to concrete cable-stayed bridges [31,32]. Although cable-stayed bridges and arch bridges have the same characteristics in terms of cable replacement, there are relatively few studies on the replacement of arch bridge hangers.…”

Section: Introductionmentioning

confidence: 99%

Study on the Precise Displacement Controlling Method for a Suspended Deck in the Hanger Replacement Process of an Arch Bridge

Wang¹,

Wang

Zhuo³

et al. 2021

Applied Sciences

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The hanger often needs to be replaced many times during the operation period of hanger arch bridges. To ensure the safety of the hanger replacement in the construction process of pocket hanging, the structural response in the whole construction process needs to be precisely controlled. In this paper, aiming at half-through arches with a suspended deck by cable hangers, the precise displacement controlling method for hanger replacement of an arch bridge based on the pocket hanging method has been proposed. Firstly, the equivalent model of an arch bridge in the hanger replacement process is established, and the boundary conditions of the equivalent model are calculated precisely. Secondly, in the hanger replacement process, including old hanger demolition and new hanger installation, the precise displacement expressions of the suspended deck are derived on the basis of the equivalent model. Finally, the correctness and feasibility of the proposed precise displacement controlling method are verified by the hanger replacement engineering of an arch bridge. Through this research on the hanger replacement of an arch bridge, the equivalent model adopted in this paper has been proven accurate, and only partial boundary conditions need to be considered in practical engineering applications to get accurate results. Meanwhile, the calculation results are accurate enough through the practical engineering verification, and the precise displacement controlling method is feasible in the hanger replacement process of an arch bridge based on the pocket hanging method. It is also found that satisfactory results can be achieved using hanger demolition and installation by equal step length.

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Construction sequence analysis of long-span cable-stayed bridges

Cited by 29 publications

References 16 publications

Replacement of Cable Stays in Yonghe Bridge in Tianjin, China

Replacement of Cable Stays in Yonghe Bridge in Tianjin, China

Linear Control Method for Arch Ring of Oblique‐Stayed Buckle Cantilever Pouring Reinforced Concrete Arch Bridge

Study on the Precise Displacement Controlling Method for a Suspended Deck in the Hanger Replacement Process of an Arch Bridge

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