Bearing Capacity Assessment and Maintenance Scheme Optimization on a 220kV Transmission Tower with Foundation Settlement

Using self―made model device, researchers studied the characteristics of foundation settlement of sandy soil and pile foundation load―bearing in sandy soil. Through weight loading, researchers analyzed the phenomenon of foundation settlement. Then, researchers embedded friction piles in sand, so as to analyzed pile foundation bearing capacity. The methods and results of the research can provide guidance for teaching of Soil mechanics and foundation engineering.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1065-1069.1341 ◽

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.

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The Design Method of Q460 Equal Angle Steel Strut

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.530 ◽

2012 ◽

Vol 174-177 ◽

pp. 530-533

Author(s):

Shi Lun Shi

Keyword(s):

Bearing Capacity ◽

High Voltage ◽

Design Method ◽

Test Results ◽

Transmission Tower ◽

Equal Angle ◽

Compression Members ◽

Comprehensive Development ◽

Angle Steel ◽

Engineering Projects

With the comprehensive development of ultra-high voltage (UHV) engineering projects in China, traditional strength of steel can not meet the demands of UHV transmission tower because of the great height, span and load. Therefore, it is necessary to widely use Q460 equal angle steel. The deficiency of studies on related theories and tests leads to the lack of sufficient basis for its use. In this paper, experimental and theoretical researches were carried out on the bearing capacity of compression members of Q460 equal angle steel. Based on the test results, design suggestions and methods were put forward.

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Geometry Optimization and Engineering Applications of Transmission Tower Foundation in the Slope

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.423-426.1243 ◽

2013 ◽

Vol 423-426 ◽

pp. 1243-1247

Author(s):

Bin Peng ◽

Xing Yun Wang ◽

Yu Wang ◽

He Huang

Keyword(s):

Regression Analysis ◽

Bearing Capacity ◽

Geometry Optimization ◽

Ultimate Bearing Capacity ◽

Nonlinear Regression Analysis ◽

Transmission Tower ◽

Engineering Applications ◽

Practical Engineering ◽

Tower Foundation ◽

Pile Length

Combining with practical engineering, geometry optimization and engineering applications of transmission tower foundation in the slope is researched by using the finite-difference software FLAC3D. The variation of the pullout, vertical and horizontal ultimate bearing capacity with the diameter and length of the pile is analyzed. And optimization program of actual project is given. Research shows that when the pile length is constant, the variation of the pullout and vertical ultimate bearing capacity is increasing with the diameter increasing significantly and the horizontal ultimate bearing capacity is not significant. When the diameter is constant, the pullout, vertical and horizontal ultimate bearing capacity is increasing with the length increasing significantly. By analyzing nonlinear regression analysis of calculation data, the formula of the ultimate bearing capacity is carried out, which can consider the different pile diameters and lengths. When the gradient and distance of slopes is constant, the pullout, vertical and horizontal ultimate bearing capacity can be carried out with the formula, which can provide a reference to specification revision and engineering.

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Study on Long Span Transmission Tower’s Typical Malfunctions

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.464.187 ◽

2011 ◽

Vol 464 ◽

pp. 187-190

Author(s):

Hai Lin Wang ◽

Qiang Gao

Keyword(s):

Finite Element ◽

Atmospheric Corrosion ◽

Finite Element Models ◽

Foundation Settlement ◽

Transmission Tower ◽

Long Span ◽

Material Stiffness ◽

Long Time

In this paper, several typical malfunctions of the long span transmission tower are analyzed, such as the material stiffness reduced by atmospheric corrosion over a long time, the loose of bolt joint caused by accidental factors or man-made sabotages, and foundation settlement. And establish finite element models according to the characteristics of different malfunctions. By analyzing the models, we discuss the safety of the long span transmission tower at different malfunctions. It is shown that the proposed method is of efficiency and practicality.

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