Progressive collapse analysis of long-span transmission tower-line system under multi-component seismic excitations

Tian, Li; Ma, Ren; Pan, Haiyang; Qiu, Canxing; Li, Wenfeng

doi:10.1177/1369433217700426

Cited by 18 publications

(12 citation statements)

References 12 publications

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“…A comparison of the experimental (Black et al, 1980) and simulation results is shown in Figure 4, which fitted well. And the effectiveness of the material model has also been verified by experiments (Tian et al, 2017a(Tian et al, , 2017b(Tian et al, , 2018.…”

Section: Materials Constitutive Modelmentioning

confidence: 88%

“…Therefore, when conducting the collapse analysis of the system, the buckling effect of elements should be taken into adequate account; otherwise, the capacity of the structure will be overestimated. For this reason, the Tian–Ma–Qu material model (Tian et al, 2017a) is used to simulate the nonlinear behavior of steel tubes, which is introduced into the user material routine VUMAT in ABAQUS . A comparison of the experimental (Black et al, 1980) and simulation results is shown in Figure 4, which fitted well.…”

Section: Collapse Criteriamentioning

confidence: 99%

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Fragility analysis of a long-span transmission tower–line system under wind loads

Tian

Zhang

2020

Advances in Structural Engineering

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Numerous transmission towers have collapsed due to experiencing strong winds; therefore, the purpose of this article is to investigate the collapse mechanism and the anti-collapse performance of a long-span transmission tower–line system. The detailed finite element model of a typical tower–line system is established in ABAQUS. A global damage index is proposed to quantitatively estimate the overall damage of the structure and define the collapse criteria. An incremental dynamic analysis is performed to obtain the collapse mechanism and the ultimate capacity of the structure. Subsequently, a fragility analysis for evaluating the anti-collapse performance is conducted due to the uncertainty of wind loads. Eventually, the influence of the wind attack angle and the length of the side spans on the fragility is discussed. The results demonstrate that the proposed global damage index is capable of quantitatively reflecting the overall damage and assessing the ultimate capacity of the structure. In addition, the uncertainty of the wind load has a significant influence on the ultimate capacity and the failure position. Furthermore, the results reveal that the wind attack angle and the length of the side spans have an apparent effect on the fragility of the structure.

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Section: Materials Constitutive Modelmentioning

confidence: 88%

Section: Collapse Criteriamentioning

confidence: 99%

Fragility analysis of a long-span transmission tower–line system under wind loads

Tian

Zhang

2020

Advances in Structural Engineering

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“…Because of the low flexural stiffness of the transmission line and free of rotational degree of freedom, nonlinear truss element is conventionally used for transmission lines in the transmission system modeling [12][13][14][15][16][17][18]. However, the gravity loading cannot be automatically accounted for in the nonlinear truss element; accordingly, calibration of its initial strain is required to be able to well represent the internal stress of the cable as well as the accurate cable shape.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Development of a Three‐Dimensional Transmission Tower‐Line System Model Using Nonlinear Truss and Elastic Catenary Elements for Wind Loading Dynamic Simulation

Zhu

2021

Shock and Vibration

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The accuracy of transmission tower-line system simulation is highly impacted by the transmission line model and its coupling with the tower. Owing to the high geometry nonlinearity of the transmission line and the complexity of the wind loading, such analysis is often conducted in the commercial software. In most commercial software packages, nonlinear truss element is used for cable modeling, whereas the initial strain condition of the nonlinear truss under gravity loading is not directly available. Elastic catenary element establishes an analytical formulation for cable structure under distributed loading; however, the nonlinear iteration to reach convergence can be computational expensive. To derive an optimal transmission tower-line model solution with high fidelity and computational efficiency, an open-source three-dimensional model is developed. Nonlinear truss element and elastic catenary element are considered in the model development. The results of the study imply that both elements are suitable for the transmission line model; nevertheless, the initial strain in nonlinear truss element largely impacts the model accuracy and should be calibrated from the elastic catenary model. To cross-validate the developed models on the coupled transmission tower and line, a one-span eight-line system is modeled with different elements and compared with several state-of-the-art commercial packages. The results indicate that the displacement time-history root-mean-square error (RMSE) of the open-source transmission tower-line model is less than 1 % and with a 66 % computational time reduction compared with the ANSYS model. The application of the open-source package transmission tower-line model on extreme wind speed considering the aerodynamic damping is further implemented.

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“…Power transmission tower is one of critical lifeline projects, which distributes electricity from power plants to substations (Battista et al, 2003; Chen et al, 2009; Tian et al, 2017). It is expected to remain fully functional after an earthquake, to maintain seismic resilience.…”

Section: Introductionmentioning

confidence: 99%

“…During normal operations, power transmission tower mainly suffers from self-weight, wind, and ice loads. However, recent investigations have revealed that the power transmission towers destroyed as a result of seismic hazard (Chen et al, 2017; Tian et al, 2017a). For example, power supply was disrupted due to the damages of transmission tower in the 1992 Landers earthquake and 1995 Kobe earthquake (Hall et al, 1996; Shinozuka, 1995).…”

Section: Introductionmentioning

confidence: 99%

Effect of hysteresis properties of shape memory alloy-tuned mass damper on seismic control of power transmission tower

Tian

Gao

Qiu

et al. 2018

Advances in Structural Engineering

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Statistics from past strong earthquakes revealed that electricity transmission towers were vulnerable to earthquake excitations. It is necessary to mitigate the seismic responses of power transmission towers to ensure the safety of such structures. In this research, a novel shape memory alloy-tuned mass damper is proposed, and seismic vibration control of power transmission tower using shape memory alloy-tuned mass damper based on three types of shape memory alloy materials (i.e. NiTi, M-CuAlBe, P-CuAlBe) is analyzed. The detailed three-dimensional finite element model of a power transmission tower incorporated with shape memory alloy-tuned mass damper is developed using numerical simulation software ANSYS. The control effects of shape memory alloy-tuned mass damper on the seismic vibration of power transmission tower are assessed using nonlinear time history analysis method. The interested seismic performance indices include displacement, acceleration, and base shear force. In addition to the shape memory alloy materials, the influence of seismic intensity and frequency ratio are conducted for the optimal design. It is shown that installing shape memory alloy-tuned mass damper well reduced the seismic responses of power transmission tower. The comparison between different shape memory alloys indicated that the damping of the shape memory alloy-tuned mass damper is beneficial to mitigate the vibrations.

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Progressive collapse analysis of long-span transmission tower-line system under multi-component seismic excitations

Cited by 18 publications

References 12 publications

Fragility analysis of a long-span transmission tower–line system under wind loads

Fragility analysis of a long-span transmission tower–line system under wind loads

Investigation and Development of a Three‐Dimensional Transmission Tower‐Line System Model Using Nonlinear Truss and Elastic Catenary Elements for Wind Loading Dynamic Simulation

Effect of hysteresis properties of shape memory alloy-tuned mass damper on seismic control of power transmission tower

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