Wave Propagation in X-Section Piles for Low Strain Integrity Testing: Three-Dimensional Effects

Autor: Yanling Zhang, Yuming Fan, Zheng Li, Chenglong Wang, Xuanming Ding
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Shock and Vibration, Vol 2020 (2020)
Druh dokumentu: article
ISSN: 1070-9622
1875-9203
DOI: 10.1155/2020/7574654
Popis: X-section cast-in-place concrete pile (referred to as XCC pile) has a different velocity response compared with circular section pile in the low strain testing due to the special cross section. Full-scale model tests of XCC pile were conducted to reveal the velocity response characteristics. The time-domain velocity responses on the pile top were obtained, which showed obvious three-dimensional effects because of the different high-frequency interferences. The test results were compared with the numerical results to validate the numerical model. Furthermore, numerical simulations were conducted to investigate the propagation characteristic of velocity waves along the longitudinal direction in the pile. The results indicated that the wave propagation was complicated as a result of the superposition of the incident wave and the reflected wave. The effects of the geometrical parameters of cross section on the three-dimensional effects of velocity responses were also studied. Three-dimensional effects would be more significant with a larger arc distance. However, the effects of arc angle were not obvious.
Databáze: Directory of Open Access Journals
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje