Displacement Control Technology on High-Rise Steel Structure about Main Power House of Thermal Power Plant

2014 ◽  
Vol 919-921 ◽  
pp. 72-78
Author(s):  
Huan Qin Liu ◽  
Wei Bin Li ◽  
Kang Ma
Keyword(s):  
Power Plant ◽  
Dynamic Characteristics ◽  
Lateral Displacement ◽  
Thermal Power ◽  
Wind Load ◽  
Steel Frame ◽  
Seismic Action ◽  
Boiler Steel ◽  
Displacement Response ◽  
Finite Element Software

With the background of optimal design study on main powerhouse of Power Plant, the finite element software ANSYS is adopted to control the overall structure's displacement. After the choice of structural form and loads bearing system, the static and dynamic characteristics of this boiler steel frame are analyzed in detail. And the structure's displacement response of this boiler steel frame will also be discussed under permanent load, wind load and seismic action. The structural displacement response causing by four wind load cases (front wind, back wind, left wind and right wind) is emphatically discussed and the dynamic characteristics and response spectrum analysis are also be studied. Results show that this main powerhouse owns good seismic performance and excellent lateral displacement resistance capacity because of the high structure stiffness. It shows that the horizontal displacement of the whole structure under all load cases can meet the requirements of the limit value, which demonstrates the feasibility of this structural program.

The Operation Platform Connection Styles’ Influences on the Seismic Behavior of Thermal Power Plant Frame-Bent Structure

2012 ◽  
Vol 166-169 ◽  
pp. 2400-2403
Author(s):  
Guo Liang Bai ◽  
Shuai Niu ◽  
Bao Ping Du
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Seismic Behavior ◽  
Response Spectrum ◽  
Thermal Power ◽  
Seismic Action ◽  
Spectrum Method ◽  
The Difference ◽  
Set Up ◽  
Operation Platform

Two different models are set up to analyze how the connection styles influence on the seismic behavior of frame-bent structure. In the earthquake input of both directions, mode superposition response spectrum method is used to calculate the parameters of frame-bent structure such as the story shear, seismic action deformation and so on. Analyzing the difference of the parameters of both models, explaining the reasons and drawing some rules are all done in this essay.

Effect of Wind Load on the Track Structure of Bridge with High Pier and Large Span

2013 ◽  
Vol 405-408 ◽  
pp. 1875-1880
Author(s):  
Liu Hao ◽  
Wang Ping ◽  
Le Yan ◽  
Wei Luo ◽  
Rong Chen
Keyword(s):  
Lateral Displacement ◽  
Wind Load ◽  
Horizontal Wind ◽  
Track Structure ◽  
Lateral Stability ◽  
Displacement Effect ◽  
Large Span ◽  
Finite Element Software ◽  
Additional Force ◽  
High Pier

The high pier and large-span bridge is high, soft, and have large contact area with the outside world, under the action of wind load, it will occur large vertical and horizontal displacement .This displacement effect on the track structure and will cause rail additional force, lateral displacement and create initial track irregularities, and then reduce the lateral stability of track structure. In this paper, through the large finite element software, we build pier-beam-track model to simulate and analyse the influence on the track structure under the vertical and horizontal wind load, it reached the following conclusion: horizontal wind load basic does not cause rail additional force, but reduce the rail lateral stability; longitudinal wind load can make rail produce certain vertical additional force, but compared to the telescopic additional force, the force basic can be ignored.

scholarly journals The analysis of dynamic characteristics and wind-induced displacement response of space Beam String Structure

2018 ◽  
Vol 38 ◽  
pp. 03032
Author(s):  
Yong Jian Chen ◽  
Zhen Fa Feng ◽  
Ai Qi ◽  
Ying Huang
Keyword(s):  
Dynamic Characteristics ◽  
Wind Load ◽  
Control Factor ◽  
Main Mode ◽  
Dead Weight ◽  
Initial Stress State ◽  
Displacement Response ◽  
Generation Structure ◽  
String Structure ◽  
Fluctuating Wind

The Beam String Structure structural system, also called BSS, has the advantages of lighter dead weight and greater flexibility. The wind load is the main design control factor. The dynamic characteristics and wind-induced displacement response of BSS are studied by the finite element method. The roof structure of the stadium roof of the Fuzhou Olympic Sports Center is the engineering background. 1)The numerical model was built by ANSYS, by shape finding, determine the initial stress state of structural members such as external cables; 2)From the analysis of dynamic characteristics, the main mode of vibration is the vibration of cables; 3)The wind speed spectrum of MATLAB generation structure is obtained by AR method, the structural response of the structure under static wind load and fluctuating wind load is calculated. From the analysis result, considering the equivalent static wind load of BSS , the design of adverse wind is not safe, and the fluctuating wind load should be taken into account.

Seismic Response Analysis of Cable-Stayed Bridge Tower which Does Not Consider the Pile-Soil Interaction (I)

2012 ◽  
Vol 461 ◽  
pp. 593-596
Author(s):  
Li Na Zhang ◽  
Feng Chen Li ◽  
Jian Feng Wu ◽  
Wei Bing Luo
Keyword(s):  
Seismic Response ◽  
Response Analysis ◽  
Seismic Action ◽  
Seismic Response Analysis ◽  
Displacement Response ◽  
Finite Element Software ◽  
Cable Stayed Bridge ◽  
Tower Structure ◽  
Different Characteristics ◽  
Bridge Tower

For the problem of analysis of earthquake response of cable-stayed tower bridge, the foundation is given as the rigid consolidation, do not consider the interaction of soil and structure, the finite element software ABAQUS is used for seismic response analysis. Taking the TCU052 and EI Centro wave which have different characteristics as the input of bridge tower, first to carry out the modal analysis of bridge tower structure, get various order of modal frequency of the bridge tower, then analyses the displacement response of the top of bridge tower in the bridge direction, the results showed that, under the pulse type seismic action the displacement response of bridge tower of large span cable-stayed bridge are increased.

Seismic Response Analysis of Cable-Stayed Bridge Tower which Does Not Consider the Pile-Soil Interaction (II)

2012 ◽  
Vol 461 ◽  
pp. 611-614
Author(s):  
Li Na Zhang ◽  
Feng Chen Li ◽  
Ou Yang ◽  
Cai Hua Wang ◽  
Jin Wang
Keyword(s):  
Seismic Response ◽  
Response Analysis ◽  
Seismic Action ◽  
Seismic Response Analysis ◽  
Displacement Response ◽  
Finite Element Software ◽  
Cable Stayed Bridge ◽  
Tower Structure ◽  
Different Characteristics ◽  
Bridge Tower

For the problem of analysis of earthquake response of cable-stayed tower bridge, the foundation is given as the rigid consolidation, do not consider the interaction of soil and structure, the finite element software ABAQUS is used for seismic response analysis. Taking the TCU052 and EI Centro wave which have different characteristics as the input of bridge tower, first to carry out the modal analysis of bridge tower structure, get various order of modal frequency of the bridge tower, then analyses the displacement response of the top of bridge tower in the bridge direction, the results showed that, under the pulse type seismic action the displacement response of bridge tower of large span cable-stayed bridge are increased.

The Elastic-Plastic Time History Analysis on High-Rise Steel Structure about Main Power House of Thermal Power Plant

2014 ◽  
Vol 578-579 ◽  
pp. 214-219
Author(s):  
Huan Qin Liu ◽  
Wei Bin Liu ◽  
Ruo Yang Wu
Keyword(s):  
Power Plant ◽  
Thermal Power ◽  
Time History ◽  
Steel Structure ◽  
Time History Analysis ◽  
Plant Structure ◽  
Boiler Steel ◽  
Elastic Plastic ◽  
History Analysis ◽  
High Level

in this paper, elastic-plastic time history analysis was carried out on the new power plant structure jointing the boiler steel frame and high-level framework workshop. Results show that main factory building structure owns rather excellent integration stiffness, good seismic performance and outstanding ability to resist lateral deformation. In addition, the interlayer displacement angle satisfies the requirement of seismic deformation calculation under severe earthquake action.

Investigation on Dynamic Response of Steel Tower Structure under Time-History Wind Load

2012 ◽  
Vol 166-169 ◽  
pp. 699-707
Author(s):  
Jun Wu Chen ◽  
Liang Li
Keyword(s):  
Nonlinear Dynamic Analysis ◽  
Time History ◽  
Wind Load ◽  
Linear Filter ◽  
Displacement Response ◽  
Finite Element Software ◽  
Wind Analysis ◽  
Tower Structure ◽  
Load Displacement ◽  
In Virtue Of

According to the Autoregressive Model in linear filter, the procedure, which was used to transform frequency domain to time domain, was programmed to simulate time history wind load with spatial correlation at different height of the tower by dint of numerical analysis software MATLAB. And then in virtue of the finite element software SAP2000, the nonlinear dynamic analysis to the steel structural tower under the time history wind load was made to gain the time history displacement, time history velocity and time history acceleration. Finally the comparison between static wind load displacement response and time history wind load displacement response was made to analyze the error of the static wind analysis.

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