Pseudo-Dynamic Test Analysis of Space Steel Frame with T Steel Connection

2014 ◽  
Vol 886 ◽  
pp. 408-412
Author(s):  
Xin Wu Wang ◽  
Chang Jiao Hu
Keyword(s):  
Seismic Performance ◽  
Steel Frames ◽  
Dynamic Test ◽  
Steel Structure ◽  
Steel Frame ◽  
Test Analysis ◽  
Nodal Displacement ◽  
Displacement Response ◽  
Steel Connections ◽  
Steel Connection

The pseudo-dynamic test on the space steel frame with T steel connections was carried out.The dissertation focused on the analysis of the strain,the nodal displacement,the displacement response and the load feedback of the steel frame and discussed the seismic performance of steel frames with T steel connection which could supply the test basis in perfecting the design of steel structure for our country.

Pseudo-Dynamic Test Analysis of Plane Steel Frame with Semi-Rigid Connection

2014 ◽  
Vol 513-517 ◽  
pp. 210-213
Author(s):  
Xin Wu Wang ◽  
Chang Jiao Hu
Keyword(s):  
Dynamic Test ◽  
Steel Structure ◽  
Steel Frame ◽  
Experimental Basis ◽  
Acceleration Response ◽  
Test Analysis ◽  
Hysteretic Performance ◽  
Steel Connection ◽  
Rigid Connection ◽  
Plane Steel Frame

In this paper, the pseudo-dynamic test of the plane steel frame with slit T steel connection was carried out.According to the results of the experiment,we focused on the analysis of strain,the acceleration response,displacement response and hysteretic performance of the steel frame to investigate the seismic performance of the steel frame,so as to provide experimental basis for improving the design of steel structure in our country.

The Effect of Damping on Seismic Performance of Steel Frame

2014 ◽  
Vol 580-583 ◽  
pp. 1477-1480
Author(s):  
Xin Wu Wang ◽  
Chang Jiao Hu
Keyword(s):  
Seismic Performance ◽  
Frame Analysis ◽  
Dynamic Test ◽  
Steel Frame ◽  
Structural Damping ◽  
Panel Zone ◽  
Story Drift

To study the effect of damping on seismic performance of steel frame, using the pseudo dynamic test by inputting damping and no damping to analyze the seismic performance of semi-rigid steel frame. Analysis was focused on the effect of damping on the panel zone strain, story drift and interlayer force.The conclusion was that under the more severe earthquake, the structural damping had effects on the seismic performance of semi-rigid steel frame.

Experimental Study on Seismic Performance of Connections between T-Shaped Concrete-Filled Steel Column and Steel Beam

2012 ◽  
Vol 204-208 ◽  
pp. 2455-2460
Author(s):  
Bing Cao ◽  
Shao Bin Dai ◽  
Ming Sen Lin ◽  
Ji Xiong Liu
Keyword(s):  
Experimental Study ◽  
Seismic Performance ◽  
Theoretical Basis ◽  
Steel Beam ◽  
Horizontal Load ◽  
Energy Capacity ◽  
Steel Connections ◽  
Steel Column ◽  
Steel Connection ◽  
Angle Steel

This paper presents an experimental study and analysis on three double web plate top and bottom angle steel connections of T-shaped concrete-filled steel column and steel beam under low-cycle repeating horizontal load. The damage form and seismic performance of double web plate top and bottom angle steel connections was studied. The results of analysis indicate that the strength and rigidity of the joint are mainly determined by the strength and rigidity of the thickness of top and bottom angle steel. The thickness of top and bottom angle steel affects the performance of the joint and the joint has good consuming energy capacity and its strength is high. The results provide the theoretical basis to the study and application of double web plate top and bottom angle steel connection joint.

Seismic Performance Study on Steel Frame Structures with Integral Panel

2012 ◽  
Vol 166-169 ◽  
pp. 2373-2378
Author(s):  
He Tao Hou ◽  
Ming Lei Wu ◽  
Miao Liu ◽  
Qin Ma
Keyword(s):  
Seismic Performance ◽  
Steel Frames ◽  
Steel Frame ◽  
Composite Panels ◽  
Structural System ◽  
Performance Study ◽  
Relevant Research ◽  
Steel Frame Structures ◽  
Energy Dissipation Capacity ◽  
Economic Use

In recent years, wall panels have been more and more used in the steel residential houses. A series of investigations on the seismic performance of the steel frame with composite panels have been carried out. According to the connection types between the steel frames and the panels, the structural system can be divided into two kinds: steel frames with hanging composite panels and steel frame infilled with composite panels. Results of all researchers revealed that the composite panels could effectively improve the lateral stiffness and bearing capacity of the steel frames, at the same time could enhance the energy dissipation capacity. Morever, in this paper, the relevant research results of connections between the steel frame and composite panels obtained are compared and discussed. This review provides helpful directions to those who are already engaged in composite panels used in the steel residential houses, and points out the simplified method needed to promote safe and economic use of composite panels.

scholarly journals Seismic Performance of Enclosure Wall in Postearthquake Temporary Prefabricated Light-Weight Steel Structure

2019 ◽  
Vol 2019 ◽  
pp. 1-17
Author(s):  
Guoqi Xing ◽  
Qing-hai Li ◽  
Jingjie Yu ◽  
Wei Xuan
Keyword(s):  
Experimental Model ◽  
Natural Frequency ◽  
Seismic Performance ◽  
Steel Structure ◽  
Seismic Signal ◽  
Steel Frame ◽  
Shake Table ◽  
Light Weight ◽  
Maximum Acceleration ◽  
Enclosure Wall

For the postearthquake temporary prefabricated light-weight steel structure, the enclosure walls composed of prefabricated slender columns and prefabricated strip slabs were used in the structure, which were manufactured from construction waste, such as fragments of bricks and tiles, concrete fragments, and chippings of stones. In order to obtain more accurate seismic performance of enclosure walls, a full-scale two-story experimental model was built to be placed on a shake table. In the test, acceleration transducers were fixed to the enclosure walls and steel frame, which were used to obtain the maximum acceleration of the enclosure walls and steel frame as well as natural frequency of the experimental model subjected to the seismic signal including Kobe wave and El-Centro wave. Moreover, pull-on the rope displacement transducers fixed to the exterior walls parallel to the direction of vibration were used to obtain the story drifts. The results of the shake table test show that when the experimental model is subjected to earthquake with maximum acceleration, enclosure walls are not damaged, owing to flexible connection between the steel frame and enclosure walls. Earthquake reduces the stiffness of enclosure walls, and the natural frequency of the experimental model decreases with increasing maximum acceleration of the seismic signal. In addition, based on the acceleration amplification coefficient, the collaborative performance of the steel frame and enclosure wall is better. Besides, when the experimental model is subjected to earthquake with maximum acceleration, the maximum story drift angle is only 1/2615.

The Seismic Performance Analysis of Light Steel Story-Adding on Steel Frame

2014 ◽  
Vol 501-504 ◽  
pp. 1573-1579
Author(s):  
Hao Chen ◽  
Jiu Ping Wei ◽  
Tian Wang ◽  
Ting Ting Ma
Keyword(s):  
Seismic Performance ◽  
Seismic Design ◽  
Damping Ratio ◽  
Great Influence ◽  
Steel Structure ◽  
Steel Frame ◽  
Frame Structure ◽  
Irregular Structure ◽  
Holistic Analysis ◽  
Layer Steel

It is common for using light steel structure as an upper layer to alter the multi-layer frame structure. But it is easy to form vertical irregular structure of rigid upper and flexible bottom. And the mass, stiffness, period and damping ratio are change after layer-adding. So it should take a holistic analysis of the structure. By using sap2000 to simulate a two-layer steel frame with a portal frame added, the seismic performance was analyzed. The result shows: transfer floor was relatively weak, it requires attention when seismic design; damping ratio has a great influence to seismic, it should been chose reasonably.

THE BEHAVIOR OF COLD FORMED STEEL STRUCTURE CONNECTIONS / ŠALTAI FORMUOTŲ PLIENINIŲ KONSTRUKCIJŲ MAZGŲ ELGSENA

2014 ◽  
Vol 5 (3) ◽  
pp. 113-122 ◽  
Author(s):  
Žilvinas Bučmys ◽  
Gintas Šaučiuvėnas
Keyword(s):  
Steel Structure ◽  
Cost Ratio ◽  
Good Strength ◽  
Steel Connections ◽  
Steel Connection ◽  
Cold Formed Steel ◽  
Main Factor

Nowadays, there is a growing tendency in the use of cold formed constructions, which may be explained by good strength to cost ratio. Thus, the goal of this paper is to review the behaviour of cold formed steel connection. The article reviews most up to date publications on testing and description of beam-tobeam, beam-to-column and truss connections. In brief, the properties of cold formed steel connections have been found to be semi rigid, where the main factor affecting stiffness is bearing forces around the bolthole. The article also focuses on the technique to increase stiffness of cold formed connections. Santrauka Apžvelgti mokslinės literatūros Šaltiniai apie Šaltai formuotų profiliuočių naudojimą ir jų jungtis. Kadangi Šie profiliuočiai yra gerų stiprumo savybių ir pigiau atsieina, tad nūdienos statyboje taikomi vis dažniau. Apibendrinami naujausi sijos su sija, sijos ir kolonos bei santvaros mazgų elgsenos tyrimai. Šaltai formuotų elementų jungčių elgsena yra kaip pusiau standžių mazgų. Pagrindinis veiksnys, turintis įtaką mazgo standžiui, yra varžtų glemžiamasis poveikis plonasienių elementų skerspjūvių sienelei. Pateikiama rekomendacijų, kaip didinti Šaltai formuotų profiliuočių jungčių standumą.

Location of Semi-Rigid Connection Effect On The Seismic Performance of Steel Frame Structures

2021 ◽  
Author(s):  
Emad A. Elhout
Keyword(s):  
Axial Compression ◽  
Seismic Performance ◽  
Steel Frames ◽  
Steel Frame ◽  
Frame Structures ◽  
Compression Force ◽  
Drift Ratio ◽  
Dual Beam ◽  
Story Drift ◽  
Steel Frame Structures

Abstract In design steel frames, combining semi-rigid and rigid connections can result in better structural performance, particularly in seismic locations. In this study, the effects of semi-rigid beam-to-column connections located on the seismic performance of steel frame structures are investigated. The analysis uses six and twelve-story moment resisting steel frames (MRSF) with rigid, semi-rigid, and dual beam-column connections. These frames are designed according to the Egyptian design codes. Drain-2Dx computer program and seven earthquake ground motions are used in the non-linear dynamic analysis. The rotational stiffness of beam-to-column connections is indicated through the end fixity factors with a value equal to 0.6. The performances of these frames are evaluated through the roof drift ratio (RDR), the maximum story drift ratios (SDR), and the maximum column axial compression force (MACF). The results indicated that the quantities of fundamental periods, roof drift ratio, the story drift ratio, and the column axial compression force are related to stiffness, rigidity, and the number of semi-rigid connections in steel frames.

Dissipative Knee Bracing for Seismic Strengthening of Steel Frames

2013 ◽  
Vol 743 ◽  
pp. 123-127
Author(s):  
Marco Valente
Keyword(s):  
Seismic Performance ◽  
Steel Frames ◽  
Seismic Intensity ◽  
Steel Frame ◽  
Shear Behaviour ◽  
Improvement Strategy ◽  
Seismic Behaviour ◽  
Nonlinear Static ◽  
Knee Elements ◽  
Nonlinear Dynamic Analyses

This study investigates the effectiveness of dissipative knee bracing as seismic performance improvement strategy for steel frames. A simplified model of a knee element is used for global analyses of frames in order to accurately simulate the bending and shear behaviour observed in laboratory tests reported in literature. The seismic response of a five-storey steel frame incorporating dissipative knee elements is investigated. Nonlinear static analyses are performed to estimate the deformation capacity of the frame and to assess the sequence of yielding in the members. Nonlinear dynamic analyses with different seismic intensity levels are carried out to compare the seismic behaviour of the steel frame in the unprotected and protected configurations. The results of the numerical investigations show that the use of knee elements has the potential to improve the seismic performance of steel frames.

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