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24 10 Vol.24 No.10
2005 5 Chinese Journal of Rock Mechanics and Engineering May 2005
( 710064)
TU 444 A 1000 6915(2005)10 1758 08
EXPERIMENTAL STUDY ON EFFECT OF SURFACE WATER ON
BEARING CAPACITY OF PILE FOUNDATION IN LOESS AREA
FENG Zhong-ju XIE Yong-li ZHANG Hong-guang ZHANG Shao-xin LI Zhe
(Key Laboratory of Special Area Highway Engineering of Ministry of Education Chang an University Xi an710064China)
Abstract The special engineering feature of loess leads to the collapsible deformation of the pile foundation when
the soil around piles is saturated. The deformation usually leads to negative friction and reduces bearing capacity
of piles. Based on the loading test before and after saturation of pile foundation of Shaanxi Zhichuanhe Bridgethe
bearing capacities before and after saturation are analyzed. It is found out that effect of surface water on the
property of bearing capacity of pile foundation in loess area is significant. The regularity of settlement of pile
foundation and soil around is summarized. The results can provide references to the design and construction of pile
foundation in loess area.
Key words soil mechanicsloess saturated test static loading testbearing capacity of pile foundation negative
friction
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