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.

scholarly journals Anti-Seismic Device Design for Container Crane and its Elastic-Plastic Time History Analysis

2015 ◽  
Vol 22 (s1) ◽  
pp. 30-34 ◽  
Author(s):  
Dashan Dong ◽  
Jin Li ◽  
Yuanyuan Teng
Keyword(s):  
Time History ◽  
Steel Structure ◽  
Seismic Intensity ◽  
Time History Analysis ◽  
Elastic Plastic ◽  
Container Crane ◽  
History Analysis ◽  
Safety And Reliability ◽  
Major Equipment ◽  
Efficiency And Reliability

Abstract Quayside container crane is a kind of large dimension steel structure, which is the major equipment used for lifting container at modern ports. With the aim to ensure the safety and reliability of the crane under seismic loads, an anti-seismic device is designed. To validate the efficiency and reliability of the anti-seismic device, elastic-plastic time history analysis under rare seismic intensity is carried out. And the results of elastic-plastic time history analysis when the crane installed anti-seismic device and uninstalled the device are compared.

Elastic-Plastic Time History Analysis of MR Damping Structure Based on LQG Algorithm

2016 ◽  
Vol 858 ◽  
pp. 145-150
Author(s):  
Yu Liang Zhao ◽  
Zhao Dong Xu
Keyword(s):  
Optimal Control ◽  
Time History ◽  
Mr Damper ◽  
Time History Analysis ◽  
Control Force ◽  
Control Effect ◽  
Damping Force ◽  
Optimal Control Strategy ◽  
Elastic Plastic ◽  
History Analysis

This paper discussed an elastic-plastic time-history analysis on a structure with MR dampers based on member model, in which the elastoplastic member of the structure is assumed to be single component model and simulated by threefold line stiffness retrograde model. In order to obtain better control effect, Linear Quadratic Gaussian (LQG) control algorithm is used to calculate the optimal control force, and Hrovat boundary optimal control strategy is used to describe the adjustable damping force range of MR damper. The effectiveness of the MR damper based on LQG algorithm to control the response of the structure was investigated. The results from numerical simulations demonstrate that LQG algorithm can effectively improve the response of the structure against seismic excitations only with acceleration feedback.

Elastic-Plastic Time History Analysis of Self-Anchored Cable-Stayed Suspension Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 4295-4300
Author(s):  
Feng Miao ◽  
Lei Shi ◽  
Zhe Zhang
Keyword(s):  
Plastic Hinge ◽  
Time History ◽  
Seismic Energy ◽  
Suspension Bridge ◽  
Time History Analysis ◽  
Main Beam ◽  
Elastic Plastic ◽  
Finite Element Software ◽  
Axial Forces ◽  
History Analysis

Base on the elastic-plastic analytical theory, an elastic-plastic time-history analysis of self-anchored cable-stayed suspension bridge, which engineering background is Dalian Gulf Cross-sea Bridge program, is performed by using general finite element software Midas/Civil. The material nonlinearity of structure is considered with reinforcement concrete fiber model, and distributed hinge type is adopted to simulate for plastic hinge. Compared with the results of an elastic time-history analysis, it is shown that for the structure into the elastic-plastic stage, because of the production of plastic hinge, the input seismic energy is dissipated partially, and the internal forces of structural elements are reduced. The bending moments and axial forces occur mainly in the main tower root. Furthermore, the rotation properties of the plastic hinge causes displacement increasing of certain parts of the structure, which assumes mainly the vertical displacement present on the top of main tower and the main beam. In conclusion, it is proposed that caging devices are set in the design.

Time History Analysis of the Base Isolated Steel Structure

2017 ◽  
Vol 4 (6) ◽  
pp. 14-25
Author(s):  
Fasil Mohi ud Din ◽  
◽  
Pavitra C ◽  
M.Muthu kumar
Keyword(s):  
Time History ◽  
Steel Structure ◽  
Time History Analysis ◽  
History Analysis

scholarly journals Behaviour of Thermal Power Plant Boiler Support Steel Structure under Seismic Excitations

2019 ◽  
Vol 8 (1) ◽  
pp. 74-80
Author(s):  
R. Arun Kumar . ◽  
C. Umarani .
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Time History ◽  
Steel Structure ◽  
Mode Shapes ◽  
Seismic Excitations ◽  
Static And Dynamic Analysis ◽  
Power Plant Boiler ◽  
Plant Boiler

Static and dynamic analysis of a thermal power plant boiler support steel structure is carried out to study its behaviour and responses. Non-Linear Time History Analysis (NLTHA) method is adopted to study the behaviour and response of the structure in addition with Equivalent Static Analysis (ESA) and Response Spectrum Analysis (RSA) methods using SAP2000 software application. Though NLTHA method is not used extensively in Indian boiler support structure design practices, in the present study, an attempt is made to study about the realistic behaviour and performance of boiler support steel structure using NLTHA. Three different ground motions are used for analysing the boiler support steel structure with compatible scale factors and during the analysis, behaviour of the structure under different seismic excitations are usually compared in terms of [5] load-deflection, moment-rotation, moment-curvature and stress-stain relationships. Hence it is found that NLTHA method provides more accurate and dynamic results compared to the ESA and RSA methods. Various seismic demand parameters like mode shapes, displacements, drifts, base shear forces, floor accelerations and floor response spectra curves are presented in the results to understand the behaviour and response of the boiler support steel structures during the seismic excitations.

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