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| Experimental study on the dynamic responses of reinforced concrete pipes under continuous lateral impact |
| YANG Jinhui1,2, HU Shaowei1,3, YE Yuxiao2, LOU Benxing2, MING Pan2, WANG Siyao1,2 |
1. School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430070, China;
2. Material and Structural Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China;
3. School of Civil Engineering, Chongqing University, Chongqing 400045, China |
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Abstract To reveal the failure mechanism of reinforced concrete pipes under continuous lateral impact load, the transverse impact test of 6 reinforced concrete pipes was completed, taking into account different drop hammer heights, impact times, and two restraint forms of simply supported and fixed supports. Influence of the dynamic response of concrete pipe lateral impact. The prediction formulas of impact force and mid-span deformation were put forward and fitted with test data. The variation law of the peak impact force and mid-span displacement of the pipeline with different impact speeds and impact times was obtained. The energy absorption coefficient is used to quantify and evaluate the energy absorption capacity of the pipeline when subjected to lateral impact. The results show that the deformation and damage of the fixed-supported constrained pipeline is significantly better than that of the simply-supported constrained specimens. After being subjected to multiple lateral impacts, the energy absorption coefficient increases, and the impact deformation resistance decreases significantly.
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Received: 25 September 2020
Published: 28 January 2022
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