A new method of testing pile using dynamic P-S-curve made by amplitude of wave train |
| |
| Authors: | Hu Yi-li Xu Jun Duan Yong-kong Xu Zhao-yong Yang Run-hai and Zhao Jin-ming |
| |
| Institution: | (1) Department of Geophysics, Yunnan University, 650091 Kunming, China;(2) Kunming Nanfang Technology and Consultation Company for Rock and Soil, 650091 Kunming, China;(3) Institute of Disaster Prevention of Yunnan Province, 650041 Kunming, China |
| |
| Abstract: | A new method of detecting the vertical bearing capacity for single-pile with high strain is discussed in this paper. A heavy
hammer or a small type of rocket is used to strike the pile top and the detectors are used to record vibration graphs. An
expression of higher degree of strain (deformation force) is introduced. It is testified theoretically that the displacement,
velocity and acceleration cannot be obtained by simple integral acceleration and differential velocity when long displacement
and high strain exist, namely when the pile phase generates a whole slip relative to the soil body. That is to say that there
are non-linear relations between them. It is educed accordingly that the force P and displacement S are calculated from the amplitude of wave train and (dynamic) P-S curve is drew so as to determine the yield points. Further, a method of determining the vertical bearing capacity for single-pile
is discussed. A static load test is utilized to check the result of dynamic test and determine the correlative constants of
dynamic-static P(Q)-S curve.
Foundation item: Key projects of the tenth Five-year Plan of Yunnan Province (documented Yunnan district 2002]54-02-02) and Geophysical
Society of Yunnan Province. |
| |
| Keywords: | amplitude of wave train dynamic P-S curves detecting of bearing capacity of a pile |
| 本文献已被 SpringerLink 等数据库收录！ |
