Seismic Performance of the Pre-Fabricated Steel Frame Infilled with AAC Wall Panels and their Joint Connection: Full-Scale Shaking Table Test

2019 ◽  
Vol 13 (03n04) ◽  
pp. 1940004 ◽  
Author(s):  
Dongsheng Du ◽  
Shuguang Wang ◽  
Weiwei Li ◽  
Feng Xu ◽  
Weiqing Liu
Keyword(s):  
Shaking Table Test ◽  
Damping Ratio ◽  
Steel Frame ◽  
Shaking Table ◽  
Frame Structure ◽  
Wall Panels ◽  
Joint Connection ◽  
New Type ◽  
Rare Earthquake ◽  
Steel Frame Structure

A series of shaking table tests were performed to investigate the seismic behavior of the pre-fabricated steel frame structure infilled with autoclaved aerated concrete (AAC) external wall panels. The reliability of a new type of joint connections adopted in the structure between the steel frame and the wall panels was particularly validated during the test. Dynamic tests were carried out on a two-story full-scaled steel frame, considering seismic loading of three earthquake waves with different imposed peak accelerations in the range of 70[Formula: see text]cm/s2 to 400[Formula: see text]cm/s2. The experimental analyses encompassed cracking patterns, failure mechanisms, dynamic property and seismic response of the structure. The results show that the structural components, including the joint connections between the steel frame and the walls, behaved well even under the rare earthquake at 8∘. The structural stiffness of the steel frame infilled with wall panels was increased by 56%, compared with the steel frame infilled without wall panels. The damping ratio of the undamaged steel frame installed with wall panels was 7.25%.

Seismic Behavior Study of External Wall Panels in Steel Frames

2011 ◽  
Vol 243-249 ◽  
pp. 1425-1428 ◽  
Author(s):  
Ming Ji Fang
Keyword(s):  
Shaking Table Test ◽  
Dynamic Properties ◽  
Steel Frame ◽  
Shaking Table ◽  
Frame Structure ◽  
External Wall ◽  
Behavior Study ◽  
Wall Panels ◽  
Seismic Behaviors ◽  
Steel Frame Structure

The shaking table test of a full-scale steel frame structure with ALC external wall panels is performed in this paper. Based on the experimental results, the seismic behaviors of ALC external walls and joints are studied, such as the destruction properties of ALC external walls and joints and the effects of external walls on the dynamic properties of steel frame. Several useful conclusions and suggestions are presented in the paper.

SHAKING TABLE TEST ON COLLAPSE BEHAVIOR OF SMALL-SCALE STEEL FRAME STRUCTURE

2007 ◽  
Vol 72 (620) ◽  
pp. 125-132 ◽  
Author(s):  
Yuko SHIMADA ◽  
Motoki AKAZAWA ◽  
Yosuke ITO ◽  
Yuichi MATSUOKA ◽  
Satoshi YAMADA ◽  
...  
Keyword(s):  
Shaking Table Test ◽  
Steel Frame ◽  
Shaking Table ◽  
Frame Structure ◽  
Small Scale ◽  
Collapse Behavior ◽  
Steel Frame Structure

scholarly journals Experimental Research on Passive Control of Steel Frame Structure Using SMA Wires

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Shi Yan ◽  
Jian Niu ◽  
Peng Mao ◽  
Gangbing Song ◽  
Wei Wang
Keyword(s):  
Passive Control ◽  
Shaking Table Test ◽  
Steel Frame ◽  
Shaking Table ◽  
Dynamic Responses ◽  
Frame Structure ◽  
Seismic Load ◽  
Control Effect ◽  
Maximum Displacement ◽  
Steel Frame Structure

Mechanical properties of shape memory alloy (SMA) wires were experimentally researched in this paper, and an energy dissipater made of SMA wire cable was designed and applied in a steel frame structure model by using superelasticity characteristics of SMAs to passively reduce dynamic responses of the steel frame structure under seismic load. For the characteristics of large relative displacements between the stories of the steel frame structure on both diagonal ends and the consideration of initial prestrain effects of the SMA cables, three kinds of the whole control, the part control, and no control of the shaking table tests and numerical simulations were carried, respectively. Through the results of the shaking table test and numerical simulation analysis, the dynamic responses such as the maximum displacement, velocity, and acceleration at the top layer of the steel frame structure applied with SMA cables are significantly decreased compared with the no control case. However, considering the premise of both effectiveness and efficiency, the part control effect is superior to the whole control. In many cases, it can meet the control requirement of reducing the maximum displacement and acceleration, while the superelasticity of SMAs can be sufficiently played, realizing the passive control purposes of the steel frame structure based on the energy dispassion through the application of the SMA cables. The proposed method has broad application prospects in the passive control field of building structures.

Shaking Table Test of Steel Frame Structure in Sine-Swept Vibration and its Virtual Realization

2013 ◽  
Vol 454 ◽  
pp. 204-208
Author(s):  
Hong Biao Liu ◽  
Qiang Zhang ◽  
Xian Peng Liu
Keyword(s):  
Shaking Table Test ◽  
Dynamic Properties ◽  
Structural Response ◽  
Time Domain Analysis ◽  
Steel Frame ◽  
Shaking Table ◽  
Frame Structure ◽  
The Difference ◽  
Dynamic Time ◽  
Steel Frame Structure

The accurate sine-swept function is proposed by theoretic derivation. The natural frequencies of five-story steel frame structure in transverse direction were identified by modal test. Based on the numerical simulation results of steel frame structure excited by sine-swept vibration, it is proved that the difference of structural response between forward excitation and backward excitation is little,and both the results of them can be used to evaluate the dynamic property of structure. However, it is proper to decide whether the response results of structure should be modified or not based on the dynamic properties of table-board. The conclusions above can provide basis for design and dynamic time-domain analysis of shaking table test in sine-swept excitation.

scholarly journals Shaking Table Test for Evaluating the Seismic Performance of Steel Frame Retrofitted by Buckling-Restrained Braces

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Tingting Wang ◽  
Jianhua Shao ◽  
Chao Zhao ◽  
Wenjin Liu ◽  
Zhanguang Wang
Keyword(s):  
Seismic Performance ◽  
Shear Force ◽  
Seismic Waves ◽  
Shaking Table Test ◽  
Steel Frame ◽  
Shaking Table ◽  
Frame Structure ◽  
Acceleration Response ◽  
Buckling Restrained Brace ◽  
Interstory Drift

To investigate the seismic performance of buckling-restrained braces under the earthquake action, the shaking table test with a two-story 1/4 scale model is carried out for the ordinary pure steel frame and the buckling-restrained bracing steel frame with low-yield-point steel as the core plate. The failure modes, dynamic characteristics, acceleration response, interstory drift ratio, strain, shear force, and other mechanical properties of those two comparative structures subjected to different levels of seismic waves are mainly evaluated by the experiment. The test results show that under the action of seismic waves with different intensities, the apparent observations of damage occur in the pure frame structure, while no obvious or serious damage in the steel members of BRB structure is observed. With the increase in loading peak acceleration for the earthquake waves, the natural frequency of both structures gradually decreases and the damping ratio gradually increases. At the end of the test, the stiffness degradation rate of the pure frame structure is 11.2%, while that of the buckling-restrained bracing steel frame structure is only 5.4%. The acceleration response of the buckling-restrained bracing steel frame is smaller than that of the pure steel frame, and the acceleration amplification factor at the second story is larger than that at the first story for both structures. The average interstory drift ratios are, respectively, 1/847 and 1/238 for the pure steel frame under the frequent earthquake and rare earthquake and are 1/3000 and 1/314 for the buckling-restrained bracing steel frame, which reveals that the reduction rate of lateral displacement reaches a maximum of 71.71% after the installation of buckling-restrained brace in the pure steel frame. The strain values at each measuring point of the structural beam and column gradually increase with the increase of the peak seismic acceleration, but the strain values of the pure steel frame are significantly larger than those of the buckling-restrained bracing steel frame, which indicates that the buckling-restrained brace as the first seismic line of defense in the structure can dramatically protect the significant structural members. The maximum shear force at each floor of the structure decreases with the increase in height, and the shear response of the pure frame is apparently higher than that of the buckling-restrained bracing structure.

Shaking table test of steel frame with ALC external wall panels

2013 ◽  
Vol 80 ◽  
pp. 278-286 ◽  
Author(s):  
Ming-Ji Fang ◽  
Jing-Feng Wang ◽  
Guo-Qiang Li
Keyword(s):  
Shaking Table Test ◽  
Steel Frame ◽  
Shaking Table ◽  
External Wall ◽  
Wall Panels

Shaking Table Tests on a Passive Equipment Isolation System for Earthquake Protection

2009 ◽  
Author(s):  
Maurizio De Angelis ◽  
Salvatore Perno ◽  
Anna Reggio ◽  
Gerardo De Canio ◽  
Nicola Ranieri
Keyword(s):  
Steel Frame ◽  
Shaking Table ◽  
Frame Structure ◽  
Shaking Table Tests ◽  
Isolation System ◽  
Industrial Plants ◽  
Steel Frame Structures ◽  
Rigid Mass ◽  
Passive Isolation ◽  
Steel Frame Structure

The present work refers to steel frame structures in industrial plants. A passive isolation system for seismic protection of a considerable equipment, already present on a frame support structure and rigidly constrained to it, is investigated through both numerical simulations (1+1 DOF system) and shaking table tests on a 1:5 scale two-story steel frame structure. The equipment (e.g. a pipeline, a compressor unit, ...) is modelled as a rigid mass. The optimal design is determined by minimizing the dynamic response of the isolated mass. In order to ensure strenght and serviceability, the response of the frame is also monitored.

Development of Passive Controlled Structure Assembled With L-Type Diaphragm

2008 ◽  
Author(s):  
Tadashi Mikoshiba ◽  
Chikahiro Minowa ◽  
Masakazu Terai ◽  
Yujiro Hiyama ◽  
Takanori Sato ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Shaking Table Test ◽  
Stress Transfer ◽  
High Strength ◽  
Shaking Table ◽  
Frame Structure ◽  
Absorption Mechanism ◽  
New Type ◽  
Column Joint ◽  
Controlled Structure

Using the high-strength bolted connection, it is possible to control the quality of the joint and improve the construction of the structure. By setting the energy absorption mechanism on the structure and enhancing the damping effect, it makes it possible to scale back the influence of the earthquake. Based on the statement above, a new type of beam column joint (L-type Diaphragm) was developed and tests and analysis were conducted to validate the performance of this joint and the energy absorption characteristics at the end of the beam were surveyed. The stress transfer mechanism of the joint was investigated in the shaking table test of the actual size frame structure with this joint. As a result, it was found effective and a higher reliability.

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