Optimal synthesis method for transmission tower truss structures subjected to static and seismic loads

Taniwaki, Kazuhiro; Ohkubo, Sadaji

doi:10.1007/s00158-003-0367-7

Cited by 16 publications

(6 citation statements)

References 18 publications

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“…Taniwaki and Ohkubo [ 65 ] developed an efficient optimal synthesis method to determine the optimum solutions for the structural shape, cross-sectional dimensions, and material type of all member elements of large-scale transmission towers subjected to static and seismic loads. The example of a cost-minimization problem for a real transmission tower that considers not only the material costs, but also the cost of land as objective functions was presented to demonstrate the rigorousness, efficiency, and reliability of the proposed method.…”

Section: Seismic Responses Of Transmission Tower-line Systemmentioning

confidence: 99%

Dynamic Responses and Vibration Control of the Transmission Tower-Line System: A State-of-the-Art Review

Chen

Guo

Peng-yun

et al. 2014

The Scientific World Journal

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This paper presented an overview on the dynamic analysis and control of the transmission tower-line system in the past forty years. The challenges and future developing trends in the dynamic analysis and mitigation of the transmission tower-line system under dynamic excitations are also put forward. It also reviews the analytical models and approaches of the transmission tower, transmission lines, and transmission tower-line systems, respectively, which contain the theoretical model, finite element (FE) model and the equivalent model; shows the advances in wind responses of the transmission tower-line system, which contains the dynamic effects under common wind loading, tornado, downburst, and typhoon; and discusses the dynamic responses under earthquake and ice loads, respectively. The vibration control of the transmission tower-line system is also reviewed, which includes the magnetorheological dampers, friction dampers, tuned mass dampers, and pounding tuned mass dampers.

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Section: Seismic Responses Of Transmission Tower-line Systemmentioning

confidence: 99%

Dynamic Responses and Vibration Control of the Transmission Tower-Line System: A State-of-the-Art Review

Chen

Guo

Peng-yun

et al. 2014

The Scientific World Journal

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“…A transmission tower resists various load conditions: the load combinations are explained in the ASCE 74 [1]. Many researchers have conducted structural safety studies on transmission towers under various load conditions [2][3][4][5][6][7][8]. In particular, various studies have been conducted on wind loads [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Analytical Investigation of Effects of Secondary Structural Members on the Structural Behaviors of Transmission Towers

Kim¹,

Han²,

Kim³

et al. 2022

Preprint

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A high-voltage transmission tower consists of structures to avoid the risk of electric shock and to prevent the risk of collapse. Hence, towers are generally designed to be high-rise for efficiency. The main posts of the tower are primary structural members that resist loads under various load conditions. Therefore, the contribution of the secondary member to securing the stiffness and strength of the main posts by reducing the effective buckling length is important. However, there are no detailed design criteria for secondary members. In this study, the structural effects of horizontal members and braces on the torsional stiffness, elastic buckling strength, and load-carrying capacity of transmission towers were observed through various structural analysis methods including linear-elastic, eigenvalue, and geometric nonlinear and inelastic analyses under governing load combinations. According to the analytical study, rather than the horizontal members, the brace spacing significantly affects the structural performance. Therefore, the number of horizontal members can be minimized if sufficient brace members are erected. If the brace spacing is wide, it is recommended that the horizontal members be erected to create K bracing, and the buckling resistance of the main posts can be thus enhanced.

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“…Bhattacharya et al (2008) used genetic algorithm to optimize the overall cost of precast concrete pipe racks while considering member sizes, grades of concrete and steel, and reinforcement ratio as design variables, and the member strength and deflections as constraints. Taniwaki and Ohkubo (2004) carried out optimal design of transmission tower truss structures under static and seismic loadings. Design optimization of tall steel buildings with particle swarm optimization algorithm was carried out by Gholizadeh and Fattahi (2014).…”

Section: Introductionmentioning

confidence: 99%

Optimal design of steel pipe rack structures using PSO, GWO, and IGWO algorithms

Zakian

Ordoubadi

Alavi³

2021

Advances in Structural Engineering

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Design optimization of industrial structures is of great importance for engineers in order to provide a cost-effective structural design. Meanwhile, pipe rack is a skeletal industrial structure subjected to various types of loading such as gravity, seismic, piping, and thermal forces. While there are many studies on design optimization of the most common structures, only a limited number of studies exist on optimal design of industrial structures. In this article, a design optimization problem is proposed for weight minimization of steel pipe rack structures, and then the problem is solved through three meta-heuristic algorithms consisting of a modified particle swarm optimization (PSO), grey wolf optimizer (GWO), and the recently developed improved grey wolf optimizer (IGWO). The optimization problem is in discrete form in order to consider practically available cross-sections for the structural members. Stress ratio, drift, and dimensional constraints are imposed during the optimization. In order to demonstrate the capability and effectiveness of the present design optimization problem, a pipe rack structure is optimized by the proposed algorithms, and the optimized designs are compared to an ordinary design in terms of the structural weight and the status of constraints.

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Optimal synthesis method for transmission tower truss structures subjected to static and seismic loads

Cited by 16 publications

References 18 publications

Dynamic Responses and Vibration Control of the Transmission Tower-Line System: A State-of-the-Art Review

Dynamic Responses and Vibration Control of the Transmission Tower-Line System: A State-of-the-Art Review

Analytical Investigation of Effects of Secondary Structural Members on the Structural Behaviors of Transmission Towers

Optimal design of steel pipe rack structures using PSO, GWO, and IGWO algorithms

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