Experimental and Numerical Research on Seismic Performance of Earthquake-Damaged RC Frame Strengthened with CFRP Sheets
| Autor: | Feng Liu, Haitao Chen, Gao Qiumei, Wei Xuan, Lai Wang, Cong Shuping, Ying Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Numerical research
Materials science Article Subject business.industry Numerical analysis Frame (networking) 0211 other engineering and technologies General Engineering Stiffness 020101 civil engineering 02 engineering and technology Structural engineering 0201 civil engineering Seismic analysis 021105 building & construction lcsh:TA401-492 medicine lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science Bearing capacity medicine.symptom business Ductility Reinforcement |
| Zdroj: | Advances in Materials Science and Engineering, Vol 2016 (2016) |
| ISSN: | 1687-8434 |
| DOI: | 10.1155/2016/6716329 |
| Popis: | In order to assess the seismic performance of damaged reinforced concrete (RC) frame strengthened with carbon fiber reinforced polymers (CFRP) sheets, two experimental specimens with identical reinforcement ratio and geometric dimensions were designed following Chinese code for seismic design of buildings. Experimental specimens consist of a reference (undamaged) RC frame, namely, KJ-1, and an earthquake-damaged RC frame strengthened with CFRP sheets, namely, KJ-2. A pseudostatic test was conducted on the two specimens to simulate moderate earthquake damage. The strengthening effects of CFRP sheets on damaged RC frame were discussed in terms of hysteretic curve, skeleton curve, stiffness degradation, and ductility. In addition, numerical method based on fiber model method was utilized to analyze the seismic performance of KJ-1 and KJ-2 and it is compared with the experimental result. Both the results confirm that the method of exterior bonding CFRP sheets on the damaged RC frame has restored the seismic performance such as bearing capacity, stiffness, and ductility to its original undamaged level, and some of the seismic performance of the damaged RC frame strengthened with CFRP sheets is even better than the undamaged one, which proves that the method has significant effect in strengthening postearthquake-damaged RC frames. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|