Experimental Investigations into Earthquake Resistance of Steel Frame Retrofitted by Low-Yield-Point Steel Energy Absorbers
| Autor: | Zhanguang Wang, Wen-hua Cai, Sakdirat Kaewunruen, Jianhua Shao, Kai Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Bending (metalworking)
020101 civil engineering 02 engineering and technology lcsh:Technology 0201 civil engineering lcsh:Chemistry Acceleration low-yield-point steel 0203 mechanical engineering Range (statistics) General Materials Science shaking table test lcsh:QH301-705.5 Instrumentation Fluid Flow and Transfer Processes lcsh:T business.industry Process Chemistry and Technology General Engineering Structural engineering lcsh:QC1-999 Computer Science Applications energy absorber steel frame 020303 mechanical engineering & transports lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Dynamic loading Earthquake shaking table lcsh:Engineering (General). Civil engineering (General) business Material properties lcsh:Physics Energy (signal processing) Geology Intensity (heat transfer) |
| Zdroj: | Applied Sciences Volume 9 Issue 16 Applied Sciences, Vol 9, Iss 16, p 3299 (2019) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app9163299 |
| Popis: | This paper is the world&rsquo s first to highlight an experimental investigation into the earthquake responses of a steel frame retrofitted by novel metallic bending energy absorbers made of low-yield-point steel with the yield strength of approximately 100 MPa. New results have been achieved by conducting comprehensive shaking table tests on a quarter-scaled model of a two-story, one-span building structure subjected to incremental intensity levels of input earthquake records. The detailed information of the specimens, material properties, monitoring sensors, and dynamic loading mechanisms has been presented. The experimental results in terms of seismic phenomena, dynamic characteristics, acceleration, inter-story drift ratios, and strain distributions are also analyzed by the data collected from a wide range of sensors. It is found that the seismic failure of the specimens depends largely on the energy absorbers, which dissipate the majority of seismic input energy in order to prevent the parent steel frame from being damaged by a severe earthquake. In addition, the retrofitted structure sufficiently satisfies the design criteria considering allowable drift limits under both frequent and rare earthquakes. This indicates the influential role of the novel low-yield-point absorber, in that the overall seismic performance of the retrofitted structure can be improved adequately for survival in high-intensity seismic fortification areas. |
| Databáze: | OpenAIRE |
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