TITLE:
The Dynamic Characteristic Experimental Method on the Composite Foundation with Rigid-Flexible Compound Piles
AUTHORS:
Jihui Ding, Weiyu Wang, Tuo Zhao, Junhui Feng, Panxing Zhang
KEYWORDS:
Cement-Soil Piles; Cememt-Flyash-Gaavel Piles; Composite Foundation; Dynamic Characteristic; In-Site Test
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.3 No.2,
May
30,
2013
ABSTRACT: Based on the idea of optimization design of pile type, the
composite foundations, which include cememt-flyash-gaavel (for short CFG) long
piles and cement-soil (for short CS) short piles, and CS piles with CFG core as
well, are formed. The method of the site dynamic characteristic tests of the
composite foundations is discussed. The test results show that fireworks bomb
may replace demolitions as the vibration resource. Vibration time is about 0.1 sec. Horizontal
vibration major frequency is at 22.476 - 56.436 Hz, and vertical vibration
major frequency is at 15.538 - 55.884 Hz. The pile arrangements
of the composite foundation in the same site have more effect on the acceleration
peak value. From the point of vibration, the anti-seismic effect of the CS
piles with CFG core is better than others.