A Method of Optimum Installation of the Viscoelastic Damper on the Steel Frame Structure

2014 ◽  
Vol 919-921 ◽  
pp. 1027-1030
Author(s):  
Li Ming Li ◽  
Cheng Wei Huang ◽  
Cheng Shen ◽  
Yi Tian
Keyword(s):  
Objective Function ◽  
Analytical Method ◽  
Optimization Method ◽  
Steel Frame ◽  
Frame Structure ◽  
Viscoelastic Damper ◽  
Performance Objective ◽  
Practical Engineering ◽  
Steel Frame Structure

The main purpose of optimum installation of the viscoelastic damper is to make the structure has a better seismic capacity.So we need find a reasonable objective function and a method to solve this function.This paper put forward a kind of optimization method based on the performance objective,explore suitability and feasibility of this method on the steel frame structure,and analyse the results compare with other optimization methods.The analytical method and the results has certain guiding significance for optimization of the viscoelastic damper in practical engineering.

scholarly journals Seismic Performance of an Efficient Scissor-Jack-Damper Configuration

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Lihua Zhu ◽  
Pengyu Guo ◽  
Chenglong Hua ◽  
Shiyu Shan
Keyword(s):  
Mechanical Behavior ◽  
Seismic Performance ◽  
High Efficiency ◽  
Steel Frame ◽  
Earthquake Damage ◽  
Frame Structure ◽  
Magnification Factor ◽  
Practical Engineering ◽  
Steel Frame Structure ◽  
Damping Systems

Energy-dissipating or damping systems have been widely used in new and retrofitted structures for reducing earthquake damage to structural frames. Most damping devices were installed using diagonal or chevronbrace configurations, until the development of toggle-brace and scissor-jack configurations. This paper presents a modified scissor-jack-damper configuration with substantially improved efficiency. The mechanical behavior of the efficient scissor-jack-damper configuration is analyzed theoretically, and a formula for the displacement magnification factor of the configuration is proposed. A steel-frame specimen installed with the efficient scissor-jack-damper configuration was tested to verify the accuracy of the formula. The seismic responses of an uncontrolled steel-frame structure and of two controlled structures, installed with a diagonal brace and efficient scissor-jack-damper configurations, were analyzed using SAP2000. The high efficiency of the proposed scissor-jack-damper configuration is thus verified for practical engineering situations.

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.

Linear and non-linear analysis on two-dimensional steel frame under different temperatures

2019 ◽  
Vol 10 (1) ◽  
pp. 48-55
Author(s):  
Parthasarathi N. ◽  
Satyanarayanan K.S. ◽  
Prakash M. ◽  
Thamilarasu V.
Keyword(s):  
High Temperatures ◽  
Progressive Collapse ◽  
Transient State ◽  
Steel Frame ◽  
Frame Structure ◽  
Two Dimensional ◽  
Content Type ◽  
Frame Building ◽  
Different Temperatures ◽  
Steel Frame Structure

Purpose Progressive collapse because of high temperatures arising from an explosion, vehicle impact or fire is an important issue for structural failure in high-rise buildings. Design/methodology/approach The present study, using ABAQUS software for the analysis, investigated the progressive collapse of a two-dimensional, three-bay, four-storey steel frame structure from high-temperature stresses. Findings After structure reaches the temperature results like displacement, stress axial load and shear force are discussed. Research limitations/implications Different temperatures were applied to the columns at different heights of a structure framed with various materials. Progressive collapse load combinations were also applied as per general service administration guidelines. Originality/value This study covered both steady-state and transient-state conditions of a multistorey-frame building subjected to a rise in temperature in the corner columns and intermediate columns. The columns in the framed structure were subjected to high temperatures at different heights, and the resulting displacements, stresses and axial loads were obtained, analysed and discussed.

Sign in / Sign up

Export Citation Format

Share Document