Analysis of the seismic collapse of a high-rise power transmission tower structure

2017 ◽  
Vol 134 ◽  
pp. 180-193 ◽  
Author(s):  
Hua-Dong Zheng ◽  
Jian Fan ◽  
Xiao-Hong Long
Keyword(s):  
Power Transmission ◽  
Transmission Tower ◽  
High Rise ◽  
Seismic Collapse ◽  
Tower Structure

Dynamic Behavior of Concrete Filled Double Steel Tube under Impact with Simply Supported

2014 ◽  
Vol 1065-1069 ◽  
pp. 1341-1344
Author(s):  
Gao Lei ◽  
Rui Wang
Keyword(s):  
Bearing Capacity ◽  
Dynamic Behavior ◽  
Power Transmission ◽  
Steel Tube ◽  
Transmission Tower ◽  
Good Resistance ◽  
Impact Performance ◽  
Simply Supported ◽  
High Rise ◽  
Core Concrete

Concrete filled double skins steel tube is a new components which is based on concrete filled steel tubular and use inner steel tube instead of core concrete. The components have many advantages such as little weight, good resistance for earthquake, good stiffness for resist bending and good performance for resist fire, and has been used in bridge pier, high-rise buildings, power transmission tower and so on. While these structures may inevitably suffer impact which comes from vehicles, ships, aircraft, etc. the structures which is impacted have taken much attention. This article will analysis dynamic behavior of concrete filled double steel tube under impact with simply supported, and propose formula of dynamic bearing capacity, laid the foundation for the analysis of impact performance of CFDST.

scholarly journals Vibration Control of a High-Rise Slender Structure with a Spring Pendulum Pounding Tuned Mass Damper

Actuators ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 44
Author(s):  
Qi Wang ◽  
Hong-Nan Li ◽  
Peng Zhang
Keyword(s):  
Vibration Control ◽  
Power Transmission ◽  
Tuned Mass Damper ◽  
Width Ratio ◽  
Seismic Action ◽  
Transmission Tower ◽  
Structural Vibrations ◽  
High Rise ◽  
Mass Damper ◽  
Slender Structure

High-rise structures are normally tall and slender with a large height-width ratio. Under the strong seismic action, such a structure may experience violent vibrations and large deformation. In this paper, a spring pendulum pounding tuned mass damper (SPPTMD) system is developed to reduce the seismic response of high-rise structures. This SPPTMD system consists of a barrel limiter with the built-in viscoelastic material and a spring pendulum (SP). This novel type of tuned mass damper (TMD) relies on the internal resonance feature of the spring pendulum and the collision between the added mass and barrel limiter to consume the energy of the main structure. Based on the Hertz-damper model, the motion equation of the structure-SPPTMD system is derived. Furthermore, a power transmission tower is selected to evaluate the vibration reduction performance of the SPPTMD system. Numerical results revealed that the SPPTMD system can effectively reduce structural vibrations; the reduction ratio is greater than that of the spring pendulum. Finally, the influence of the key parameters on the vibration control performance is conducted for future applications.

Analysis of a Transmission Tower Structure with Dynamic Elastic-Plastic Time History Method

2014 ◽  
Vol 919-921 ◽  
pp. 10-14
Author(s):  
Zhong Gen Xu ◽  
Kang Qin ◽  
Chang Gen Deng
Keyword(s):  
Seismic Performance ◽  
Power Transmission ◽  
Time History ◽  
Transmission Tower ◽  
Base Shear ◽  
Shear Forces ◽  
Elastic Plastic ◽  
Tower Structure ◽  
Tower System

The idea, procedures and equation of dynamic of analysis of an actual power transmission tower system by dynamic elastic-plastic time history were introduced. Considering P-DETA effect, the base shear forces and curves of top displacement time history were obtained. P-DETA effects on seismic performance of the transmission tower were calculated. The paper can be reference for the analysis of static elastic-plastic.

Buckling Analysis of Large-Scale Transmission Tower Structure

2014 ◽  
Vol 494-495 ◽  
pp. 1678-1681
Author(s):  
Xiang Zan Xie ◽  
Rui Jun Zhang
Keyword(s):  
Transmission Lines ◽  
Large Scale ◽  
Power Transmission ◽  
Flexible Structures ◽  
Three Dimensional ◽  
Transmission Tower ◽  
Three Dimensional Model ◽  
Buckling Mode ◽  
Large Power ◽  
Tower Structure

The high-voltage transmission tower transmission lines is a major component and typically a high steel tower, is a tall, flexible structures. In this paper, the finite element method to establish a large-scale three-dimensional model of the transmission tower space, computational analysis of the transmission tower structure first six buckling modes and critical load, examined the order buckling mode characteristics. Research on the structural stability of large power transmission tower design has some theoretical significance and application value.

Optimisation of Steel Transmission Tower Structure Using Firefly Algorithm

2017 ◽  
Vol 6 (2) ◽  
pp. 9
Author(s):  
REDDY A. ANVESH ◽  
KUMAR CH. NAVEEN ◽  
REDDY K. AVINASH ◽  
CHANDRASEKHAR K.N.V. ◽  
◽  
...  
Keyword(s):  
Firefly Algorithm ◽  
Transmission Tower ◽  
Tower Structure

Ultrasonic unilateral double-position excitation lamb wave defect detection and quantification method for ground electrode of transmission tower

2021 ◽  
pp. 1-15
Author(s):  
Kuan Ye ◽  
Kai Zhou ◽  
Ren Zhigang ◽  
Ruizhe Zhang ◽  
Chunsheng Li ◽  
...  
Keyword(s):  
Guided Waves ◽  
Power Transmission ◽  
Geometric Model ◽  
Guided Wave ◽  
Quantization Error ◽  
Dispersion Function ◽  
Stable Operation ◽  
Transmission Tower ◽  
Ultrasonic Guided Wave ◽  
Transmission Towers

The power transmission tower’s ground electrode defect will affect its normal current dispersion function and threaten the power system’s safe and stable operation and even personal safety. Aiming at the problem that the buried grounding grid is difficult to be detected, this paper proposes a method for identifying the ground electrode defects of transmission towers based on single-side multi-point excited ultrasonic guided waves. The geometric model, ultrasonic excitation model, and physical model are established, and the feasibility of ultrasonic guided wave detection is verified through the simulation and experiment. In actual inspection, it is equally important to determine the specific location of the defect. Therefore, a multi-point excitation method is proposed to determine the defect’s actual position by combining the ultrasonic guided wave signals at different excitation positions. Besides, the precise quantification of flat steel grounding electrode defects is achieved through the feature extraction-neural network method. Field test results show that, compared with the commercial double-sided excitation transducer, the single-sided excitation transducer proposed in this paper has a lower defect quantization error in defect quantification. The average quantization error is reduced by approximately 76%.

SEISMIC RESPONSE OF POWER TRANSMISSION TOWER-LINE SYSTEM UNDER MULTI-COMPONENT MULTI-SUPPORT EXCITATIONS

2012 ◽  
Vol 06 (04) ◽  
pp. 1250025 ◽  
Author(s):  
TIAN LI ◽  
LI HONGNAN ◽  
LIU GUOHUAN
Keyword(s):  
Seismic Waves ◽  
Power Transmission ◽  
Incident Angle ◽  
Ground Motions ◽  
Three Dimensional ◽  
Transmission Tower ◽  
Line System ◽  
Time Stepping ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

The effect of multi-component multi-support excitations on the response of power transmission tower-line system is analyzed in this paper, using three-dimensional finite element time-stepping analysis of a transmission tower-line system based on an actual project. Multi-component multi-support earthquake input waves are generated based on the Code for Design of Seismic of Electrical Installations. Geometric non-linearity was considered in the analysis. An extensive parametric study was conducted to investigate the behavior of the transmission tower-line system under multi-component multi-support seismic excitations. The parameters include single-component multi-support ground motions, multi-component multi-support ground motions, the correlations among the three-component of multi-component multi-support ground motions, the spatial correlation of multi-component multi-support ground motions, the incident angle of multi-component multi-support seismic waves, the ratio of the peak values of the three-component of multi-component multi-support ground motions, and site condition with apparent wave velocity of multi-component multi-support ground motions.

scholarly journals Improved Performance of Electrical Transmission Tower Structure Using Connected Foundation in Soft Ground

Energies ◽  
2015 ◽  
Vol 8 (6) ◽  
pp. 4963-4982 ◽  
Author(s):  
Doohyun Kyung ◽  
Youngho Choi ◽  
Sangseom Jeong ◽  
Junhwan Lee
Keyword(s):  
Soft Ground ◽  
Transmission Tower ◽  
Electrical Transmission ◽  
Tower Structure ◽  
Improved Performance
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