Experimental and numerical study on the performance of novel RC frame structure encased with shaped steel under debris flow impact
| Autor: | Zheng Lu, Peizhen Li, Kunjie Rong, Zhihao Feng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Bending (metalworking) business.industry Frame (networking) Structural system 0211 other engineering and technologies Structure (category theory) Stiffness 020101 civil engineering 02 engineering and technology Structural engineering Impact test 0201 civil engineering Debris flow Mechanism (engineering) 021105 building & construction medicine medicine.symptom business Civil and Structural Engineering |
| Zdroj: | Engineering Structures. 212:110472 |
| ISSN: | 0141-0296 |
| Popis: | This paper proposes a novel reinforced concrete (RC) frame structure encased with shaped steel to resist the debris flow impact. The corresponding comparative experimental studies of two test models under the impact of debris flow are designed and performed, one of which is a traditional RC frame structure (TRCFS) and the other is a novel RC frame structure encased with shaped steel (NRCFS). After a series of impact loading tests, the impact resistance to debris flow of the novel RC frame structure is investigated and the comparison is made. Throughout the impact test, obvious bending failure appears on the impacted column of the traditional RC frame structure and the damage develops fast, showing its weak impact resistance. However, much less damage is found on the novel structure’s column. Additionally, the novel RC frame structure (NRCFS) performs better in force transmission mechanism than traditional one does, leading to the larger stiffness and stronger capabilities in resisting impact loads. Furthermore, the experimental and numerical results are in good agreement, which validates the rationality and accuracy of the debris flow impact test and the feasibility of the novel structural system against the debris flow impact. As a result, it can be proved in this impact loading test that novel RC frame structure encased with shaped steel has excellent impact resistance to debris flow. |
| Databáze: | OpenAIRE |
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