Cable structures: An exact geometric analysis using catenary curve and considering the material nonlinearity and temperature effect

Costa, Rosane Dias; Lavall, Armando Cesar Campos; Silva, Renata Gomes Lanna da; Santos, Altair Porcino dos; Viana, Harley Francisco

doi:10.1016/j.engstruct.2021.113738

Cited by 6 publications

(3 citation statements)

References 34 publications

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“…Employing the test method, the correctness of the finite element analysis model was verified, and the post-fire seismic performance of concrete-filled steel tubular columns after the fire was examined utilizing a finite element method [26] . For bridge structures, the temperature affects the bridge superstructure, the cables of the bridge, the reinforced concrete deck, etc [27][28][29] . In addition, temperature changes modulus of elastic of the bridge material, thereby affecting the frequency of the bridge structure [30] .…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic analysis of high-strength concrete Bridge under post-fire earthquakes considering hydrodynamic effects

Yun,

Liu

2024

Preprint

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A host of investigations on the fire resistance of concrete structures after-earthquakes and the fire resistance of concrete structures. This study utilized the linear interpolation method to deduce the curve relationship of elastic modulus and stress with temperature of high-strength concrete C60, and then the nonlinear dynamic analysis of high-strength concrete bridge structures under post-fire earthquake action is evaluated. The nonlinear dynamic response laws of high-strength concrete total bridge structures under different water depths are evaluated. The seismic capacity of high-strength concrete bridge structures under the influence of hydrodynamic effects and temperature effects is comparatively evaluated, and the results show that the hydrodynamic effect provides the external force, the temperature effect changes the concrete material properties, and the combined effect of the temperature effect and the hydrodynamic effect is significant than the effect independent of the temperature effect and the hydrodynamic effect. It is complicated and significantly increases the displacement and stress response of the bridge. The combined effects of the hydrodynamic effect and the temperature effect cannot merely be characterised as a linear superposition of the two single actions. The temperature effect on the structure is more significant than the hydrodynamic effect.

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Section: Introductionmentioning

confidence: 99%

Nonlinear dynamic analysis of high-strength concrete Bridge under post-fire earthquakes considering hydrodynamic effects

Yun,

Liu

2024

Preprint

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“…, 2022). Due to the high prestress in the cable (Costa et al. , 2022), the fracture time of the cable is usually short (Mozos and Aparicio, 2011; Hoang et al.…”

Section: Introductionmentioning

confidence: 99%

“…Cable failure is mainly divided into two categories, one is cable rupture (Kahla and Moussa, 2002) and the other is cable slackness (Zhu et al, 2013;Orynyak et al, 2022). Due to the high prestress in the cable (Costa et al, 2022), the fracture time of the cable is usually short (Mozos and Aparicio, 2011;Hoang et al, 2018). The cable will release strain energy at the moment of fracture, which will cause vibrations in the structure.…”

Section: Introductionmentioning

confidence: 99%

A numerical method to solve structural dynamic response caused by cable failure

Li,

Xue,

et al. 2023

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PurposeInstantaneous unloading with equal force is usually used to simulate the sudden failure of cables. This simulation method with equivalent force requires obtaining the magnitude and direction of the force for the failed cable in the normal state. It is difficult, however, to determine the magnitude or direction of the equivalent force when the shape of the cable is complex (space curve). This model of equivalent force may be difficult to establish. Thus, a numerical simulation method, the instantaneous temperature rise method, was proposed to address the dynamic response caused by failures of the cables with complex structural form.Design/methodology/approachThis method can instantly reduce the cable force to zero through the instantaneous temperature rise process of the cable. Combined with theoretical formula and finite element model, the numerical calculation principle and two key parameters (temperature rise value and temperature rise time) of this method were detailed. The validity of this approach was verified by comparing it with equivalent force models. Two cable-net case with saddle curved surfaces were presented. Their static failure behaviors were compared with the dynamic failure behaviors calculated by this method.FindingsThis simulation method can effectively address the structural dynamic response caused by cable failure and may be applied to all cable structures.Originality/valueAn instantaneous temperature rise method (ITRM) is proposed and verified. Its calculation theory is detailed. Two key parameters, temperature rise value and temperature rise time, of this method are discussed and the corresponding reference values are recommended.

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