Correlation analysis between Poisson’s ratio and velocity of longitudinal wave and shear wave in soil-stone mixture(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2016年01期
- Page:
- 28-35
- Research Field:
- 道路工程
- Publishing date:
Info
- Title:
- Correlation analysis between Poisson’s ratio and velocity of longitudinal wave and shear wave in soil-stone mixture
- Author(s):
- ZHANG Yu-hui; ZHANG Xian-min
- Airport College, Civil Aviation University of China, Tianjin 300300, China
- Keywords:
- road engineering; soil-stone mixture foundation; Poisson’s ratio test; stress wave; vibration compaction
- PACS:
- U416.6
- DOI:
- -
- Abstract:
- The Poisson’s ratio of high fill soil-stone foundation was difficult to be field tested due to the lack of convenient and accurate method. Then, large vibration compaction test of soil-stone mixture was conducted with silt soil, sandy soil and clay soil. The change mechanism of stress wave parameters including longitudinal wave velocity (VP),shear wave velocity (VS), velocity ratio of longitudinal wave to shear wave(VP/VS)in soil-stone mixture with different dry density of soil-stone mixture was analyzed under different water contents and different stone contents. The change rule of mixture Poissons ratio with different water contents and different stone contents was studied. Analysis model of correlation between Poissons ratio and VP/VS in mixture was built, then Poissons ratio could be calculated by VP/VS in soil-stone mixture. Precision of the model was verified in laboratory. The results show that VP/VS in mixture increases with the decrease of dry density. Curves of VP/VS moves down with the increase of stone content but moves up with the increase of water content. Curves of Poissons ratio and dry density moves up with the increase of water content but moves down with the increase of stone content; the average relative errors of the model are 0.045 for sandy mixture, 0.042 for silt mixture and 0.034 for clay mixture, and the engineering application errors is small. On this basis, the new technology of Poissons ratio test with stress wave in soil-stone mixture is proposed.
Last Update: 2016-01-29