scholarly journals The numerical simulation of hysteretic performance of K-type steel tube node in large span transmission tower

2017 ◽  
Author(s):  
Chuncheng Liu ◽  
Guoqiang Li ◽  
Xiaoling Fan
Keyword(s):  
Numerical Simulation ◽  
Steel Tube ◽  
Transmission Tower ◽  
Large Span ◽  
Type Steel ◽  
Hysteretic Performance

The Quality Control on Shengmi Bridge Arch Rib Construction

2014 ◽  
Vol 1004-1005 ◽  
pp. 1464-1467
Author(s):  
Xiu Li
Keyword(s):  
Quality Control ◽  
Steel Tube ◽  
Bridge Construction ◽  
Construction Quality ◽  
Arch Bridge ◽  
Large Span ◽  
Type Steel ◽  
Protection Coating

Introduced the essential construction craft of Nanchang Shengmi bridge (75+2×228+75m center bearing type steel tube concrete tie bar arched bridge). According to the construction craft and the quality specification request, discussed the steel arched bridge manufacture and the anticorrosion, the steel arched bridge rib erects, the steel arched bridge rib welding, the steel arched bridge in concrete configuration and the scene constructs, the steel tube protection coating construction, then proposed the construction quality control of large span steel tube concrete arch bridge. The conclusion of the article may be used at the similar steel tube concrete arched bridge construction.

The Advantage Analysis of Applying Steel Tube Tower in Large Span Engineering

2014 ◽  
Vol 680 ◽  
pp. 414-417
Author(s):  
Jing Gong ◽  
Lin Na Wang
Keyword(s):  
Working Condition ◽  
Steel Tube ◽  
Three Gorges ◽  
Transmission Tower ◽  
Large Span ◽  
The Three Gorges ◽  
Angle Steel ◽  
Modern Application ◽  
High Winds ◽  
Economical Advantage

With the operation of the power engineering, such as west-east electricity transmission, the outside sending of the three gorges, areas network and so on, many large span engineering emerged in different part of China. And among it, the key point of the whole subject is the design of the structure. This essay aims mainly at introducing the history and modern application of steel tube tower. Meanwhile do the analysis comparison for the modeling of the transmission tower according to angle steel tower and steel tube tower under the working condition of high winds. Steel tube tower is better because it is smaller in shape factor of wind load than angle steel tower, so it can reduce the tower weight and fundamental effort, the economical advantage is great.

Stretch reduction of seamless steel tube by skew rolling and its numerical simulation

2016 ◽  
Vol 113 (3) ◽  
pp. 307 ◽  
Author(s):  
Chunjiang Zhao ◽  
Yongfeng Liu ◽  
Lei Bai ◽  
Nan Wang ◽  
Xin Gao ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Steel Tube ◽  
Seamless Steel Tube ◽  
Skew Rolling ◽  
Seamless Steel

Numerical simulation of concrete filled steel tube columns against BLAST loads

2015 ◽  
Vol 92 ◽  
pp. 82-92 ◽  
Author(s):  
Fangrui Zhang ◽  
Chengqing Wu ◽  
Hongwei Wang ◽  
Yun Zhou
Keyword(s):  
Numerical Simulation ◽  
Steel Tube ◽  
Blast Loads ◽  
Concrete Filled Steel Tube

scholarly journals Investigating the Hysteretic Behavior of Concrete-Filled Steel Tube Arch by Using a Fiber Beam Element

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Jun Ma ◽  
Yang Liu ◽  
Qingfei Gao ◽  
Kang Hou
Keyword(s):  
Experimental Data ◽  
Transverse Direction ◽  
Vertical Direction ◽  
Beam Element ◽  
Steel Tube ◽  
Hysteretic Behavior ◽  
Constitutive Relationship ◽  
Concrete Filled Steel Tube ◽  
Hysteretic Performance ◽  
Fiber Beam Element

A fiber beam finite element that could account for the nonlinear constitutive relationship between steel and concrete was applied to investigate the hysteretic behavior of concrete filled steel tube (CFT) arch ribs of bridges. At first, the effectiveness of this fiber beam element using for nonlinear analysis was verified by comparing the analytical results with the experimental data, and then this composite element was applied to analyze the hysteretic performance of CFT arch ribs. The following hysteretic behavior of CFT arch ribs of bridges was investigated such as the hysteretic behaviors of moment-curvature of arch ribs in vertical direction of bridge and the hysteretic relationship between load and displacement of arch ribs in longitudinal and transverse direction of bridge. Finally, some parameters affecting the hysteretic behaviors of CFT arch ribs were presented by evaluating the capacity of ductility of CFT arch ribs.

High-Order RSM for Dynamic Reliability of UHV Transmission Tower

2015 ◽  
Vol 799-800 ◽  
pp. 1295-1298
Author(s):  
Li Qin ◽  
Wei Lin Peng ◽  
Wei Han
Keyword(s):  
Response Surface ◽  
Estimation Error ◽  
Univariate Analysis ◽  
High Order ◽  
Reliability Estimation ◽  
Transmission Tower ◽  
Dynamic Reliability ◽  
Large Span ◽  
Quadratic Response Surface ◽  
Quadratic Response

As transmission tower system has the characteristics of large-span and spatial truss structure, the study of the reliability is also developed on the basis of space truss research and large-span structure system. As simple and suitable, RSM (response surface method), in particular, quadratic response surface without considering the cross term is often used in reliability calculation. However, strong nonlinear limit that corresponding to a complex surface, the accuracy of quadratic response surface is inadequate, causing greater reliability estimation error. High-order response surface solves it well. To this end, based on univariate analysis of multivariate function, a reasonable algorithm as to assure that the form of higher-order response surface is proposed; on the algorithm is verified by given examples, the result shows better accuracy and efficiency .

Transient Simulation of a Three-Dimensional Moving Downburst

2012 ◽  
Vol 446-449 ◽  
pp. 3875-3878
Author(s):  
Bai Feng Ji ◽  
Wei Lian Qu
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Computational Fluid Dynamics ◽  
Wind Field ◽  
Three Dimensional ◽  
Simulation Method ◽  
Transient Simulation ◽  
Dynamics Simulation ◽  
Transmission Tower ◽  
Transient Wind

Thunderstorm microbursts, which are sources of extreme wind loadings in nature, have caused numerous structural failures, especially collapses of transmission tower around the world. Numerical simulation using computational fluid dynamics (CFD) has recently made significant progress in simulating downbursts. In this paper, transient simulation of a three-dimensional moving downburst was studied using computational fluid dynamics simulation method. Transient simulation of a three-dimensional moving downburst was conducted using time-filtered Reynolds Averaged Navier-Stokes (RANS) numerical simulation method. The three-dimensional transient wind field characteristics in a moving downburst were studied in detail. The results indicate that transient wind field characteristics in a moving downburst present quite different characteristics compared with stationary downburst at different heights and radial positions.

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