The Seismic Performance Analysis of Steel Frame Adding the Viscoelastic Dampers

2012 ◽  
Vol 166-169 ◽  
pp. 2461-2466
Author(s):  
Ya Li Wang ◽  
Jin Song Lei ◽  
Fei Hua Zheng ◽  
Kang Lan Zhai
Keyword(s):  
Seismic Performance ◽  
Steel Frame ◽  
Frame Structure ◽  
Analysis Software ◽  
Element Analysis ◽  
Viscoelastic Dampers ◽  
Interlayer Shear ◽  
The Finite Element Analysis ◽  
Steel Frame Structure ◽  
Mechanics Characteristics

Based on the mechanics characteristics of the viscoelastic dampers, the seismic performance of a 5 layers steel frame structure with viscoelastic dampers or not was researched. In under the action of the rarely met earthquake, the finite element analysis software MIDAS was used to analyses two of the models of displacements, interlayer shear and ductility of structure. The results showed that: after the installation of viscoelastic dampers, the displacements and interlayer shear of the structure reduced significantly, and ductility increases, the earthquake response can be cut down obviously, it shows better seismic performance.

Experimental Research and Finite Element Analysis on Behavior of Steel Frame with Semi-Rigid Connections

2010 ◽  
Vol 168-170 ◽  
pp. 553-558
Author(s):  
Feng Xia Li ◽  
Bu Xin
Keyword(s):  
Architectural Design ◽  
Plastic Hinge ◽  
Steel Frames ◽  
Seismic Energy ◽  
Internal Force ◽  
Steel Frame ◽  
Frame Structure ◽  
Element Analysis ◽  
Rigid Deformation ◽  
Steel Frame Structure

Most steel beam-column connections actually show semi-rigid deformation behavior that can contribute substantially to overall displacements of the structure and to the distribution of member forces. Steel frame structure with semi-rigid connections are becoming more and more popular due to their many advantages such as the better satisfaction with the flexible architectural design, low inclusive cost and environmental protect as well. So it is very necessary that studying the behavior of those steel frame under cyclic reversal loading. On the basics of connections experiments the experiment research on the lateral resistance system of steel frame structure has been completed. Two one-second scale, one-bay, two-story steel frames with semi-rigid connections under cyclic reversal loading. The seismic behavior of the steel frames with semi-rigid connections, including the failure pattern, occurrence order of plastic hinge, hysteretic property and energy dissipation, etc, was investigated in this paper. Some conclusions were obtained that by employing top-mounted and two web angles connections, the higher distortion occurred in the frames, and the internal force distributing of beams and columns was changed, and the ductility and the absorbs seismic energy capability of steel frames can be improved effectively.

The Design Review and Optimization of the Special-Shaped Steel Frame Structure

2010 ◽  
Vol 163-167 ◽  
pp. 600-604
Author(s):  
Ke Dong Tang ◽  
Jian Fu ◽  
Jun Dai ◽  
Peng Zhang ◽  
Rui Feng Yu
Keyword(s):  
Circulating Fluidized Bed ◽  
Reference Value ◽  
Steel Structure ◽  
Steel Frame ◽  
Frame Structure ◽  
Boiler Steel ◽  
Element Analysis ◽  
Structure Reliability ◽  
Calculation Results ◽  
Steel Frame Structure

According to the finite element analysis of a circulating fluidized bed boiler steel frame structure, the essay concludes to the calculation results of the main steel structure, moreover the structure and the composition of bars are adjusted and optimized which improve the safety of the structure reliability and reduce the volume of steel. All of the above contents have certain reference value on the similar structure.

scholarly journals Dynamic Performance Analysis of Steel Frame Structure under Seismic Action

2019 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
Xiaojun Yuan ◽  
Yanmu Qu ◽  
Jinlong Liu ◽  
Kailin Wei ◽  
Haifeng Zong
Keyword(s):  
Dynamic Performance ◽  
Time History ◽  
Steel Frame ◽  
Frame Structure ◽  
Seismic Action ◽  
Element Analysis ◽  
History Analysis ◽  
Dynamic Time ◽  
Steel Frame Structure ◽  
Dynamic Performance Analysis

In order to find out the dynamic characteristics of a steel frame structure project in the 8 degree (0.3g) area, the artificial wave, Taft wave and El Centro wave were input by using the finite element analysis software ANSYS. The dynamic time-history analysis of the structure shows the dynamic performance of the structure under the frequent earthquakes and rare earthquakes.

scholarly journals Design and Model Test of a Modularized Prefabricated Steel Frame Structure with Inclined Braces

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Xuechun Liu ◽  
Ailin Zhang ◽  
Jing Ma ◽  
Yongqiang Tan ◽  
Yu Bai
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Method ◽  
Steel Structures ◽  
Steel Frame ◽  
Frame Structure ◽  
Element Analysis ◽  
High Rise ◽  
High Degree ◽  
Steel Frame Structure

Modularized prefabricated steel structures have become the preferred design in the industrialization of steel structures due to their advantages of fast construction speed, high degree of industrialization, low labour intensity, and more. Prefabricated steel structures have some engineering applications, but all are low-rise structures with few applications in the field of high-rise buildings. Using finite element analysis with line and solid elements, full-scale experiments were conducted to study the single-span frame, which is the core load-bearing part of a modularized prefabricated high-rise steel frame structure with inclined braces. The mechanical mechanisms, computation methods, and design formulas of truss girders were obtained by comparing the finite element and model experiments and building a theoretical and experimental basis for the compilation of design codes. The mechanical characteristics under design load, the deformation and stress state, the elastic-plastic law of development, and the yield failure mode and mechanism under horizontal ultimate load were also obtained. Based on theoretical analysis, finite element analysis, and experiments, the design method of this frame was summarized and incorporated into the design code.

Seismic failure mode identification and multi-objective optimization for steel frame structure

2018 ◽  
Vol 21 (13) ◽  
pp. 2005-2017
Author(s):  
Long-He Xu ◽  
Shui-Jing Xiao ◽  
Yao-Wei Wu ◽  
Zhong-Xian Li
Keyword(s):  
Failure Mode ◽  
Seismic Performance ◽  
Steel Frame ◽  
Frame Structure ◽  
Multi Objective Optimization ◽  
Hysteretic Energy ◽  
Mode Identification ◽  
Multi Objective ◽  
Failure Mode Identification ◽  
Steel Frame Structure

In this study, a combined performance-based seismic failure mode identification and multi-objective optimization method is proposed, in which the failure probability function is introduced to identify the primary structural failure mode with a certain probability level, and the structural damage and hysteretic energy are taken as indices in the objective function to improve the structure’s seismic performance. Taking a 20-story steel frame structure as an example, seismic failure modes are identified and optimized using this method. Results indicate that global damage to the optimized structure is reduced under 62% earthquake excitations, while the hysteretic energy dissipation capacity of the optimized structure is improved under 48.3% earthquake excitations. Furthermore, the distribution of the optimized structure’s inter-story drift ratio is more uniform than in the original structure, leading to a significant improvement of the structural seismic performance.

Modal Analysis on Steel Frame-Energy Dissipation Support Structure

2013 ◽  
Vol 859 ◽  
pp. 253-256
Author(s):  
Shuo Dong ◽  
Cheng Wei Huang ◽  
Cheng Shen
Keyword(s):  
Energy Dissipation ◽  
Modal Analysis ◽  
Seismic Performance ◽  
Steel Frame ◽  
Frame Structure ◽  
Structural Damping ◽  
Common Support ◽  
The Common ◽  
Stiffness And Damping ◽  
Steel Frame Structure

The energy dissipation device is put on the support bar of the steel frame structure so as to form the energy dissipation support. The structural performance can be adjusted and improved through the additional stiffness and damping so as to realize the structural damping result. As there are many elements that can affect the structural earthquake anti-seismic performance, modal analysis which is taken as the basic contents, is conducted on the application of the common support and steel frame structure of energy dissipation support and the analysis is also conducted on the influences of energy dissipation to the vibration and cycle of the steel frame so as to lay a good foundation for the analysis on the anti-seismic performance of steel frame-energy dissipation support structural system.

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