Vibration test study on aeolian sand filler of existing slab culvert strengthened by corrugated metal pipe
Abstract Inadequate structural bearing capacity has appeared in the Reinforced Concrete (RC) slab culverts in permafrost regions of China which have experienced degradation, and need to meet new codes or standards. Based on the method of strengthening for culvert structure by the corrugated metal pi...
| Published in: | IOP Conference Series: Earth and Environmental Science |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
IOP Publishing
2021
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1088/1755-1315/787/1/012021 https://iopscience.iop.org/article/10.1088/1755-1315/787/1/012021 https://iopscience.iop.org/article/10.1088/1755-1315/787/1/012021/pdf |
| Summary: | Abstract Inadequate structural bearing capacity has appeared in the Reinforced Concrete (RC) slab culverts in permafrost regions of China which have experienced degradation, and need to meet new codes or standards. Based on the method of strengthening for culvert structure by the corrugated metal pipe (CMP), in this paper, shaking table test and vibration box test were introduced to study the vibrational compactness of aeolian sand filled in the small space between the CMP and existing culvert. The results show that aeolian sand in drying or near saturation can be better compacted; aeolian sand with a higher water content has a lower optimum vibration frequency; the sand within 0.6 m from the vibrator can be effectively compacted and 0.4m is the best; in the vibration frequency range of 50~110 Hz, the modulus of aeolian sand decreases as the frequency increases. |
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