التفاصيل البيبلوغرافية
| العنوان: |
Experimental Investigations on Load Transfer of PHC Piles in Highway Foundation Using FBG Sensing Technology. |
| المؤلفون: |
Xiao-cen Lu, Guo-wei Li, Hua-fu Pei, Gao-yu Su, Jian-tao Wu, Cudzo Amenuvor, Andrew |
| المصدر: |
International Journal of Geomechanics; Jun2017, Vol. 17 Issue 6, p1-12, 12p |
| مصطلحات موضوعية: |
LOAD transfer (Vehicles), MOTOR vehicle dynamics, PRE-tensioned prestressed concrete, CONE penetration tests, SOIL testing |
| مستخلص: |
Pretensioned spun high-strength concrete (PHC) piles are increasingly used to improve highway foundations with large pile spacing and short pile length without splicing. In this paper, a series of field tests comprising cone penetration tests (CPTs), piling, and static pile load tests were performed to investigate the load transfer mechanism of such PHC piles, the load transfer mechanisms of which are different from that of long piles with splices used in structural foundations. The variation of axial strain along PHC piles was monitored during piling and load tests using fiber Bragg grating (FBG) sensing technology and conventional vibrating wire (VW) strain gauges. The results show the superiority of FBG sensing technology in terms of reliability of data and feasibility of measurement under fast changing axial strain. The experimental data also show significant variation in the shaft and tip resistance during piling and the pile-soil strength limit state of the load tests. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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