RESEARCH OF BEARING MECHANISM AND BEARING CAPACITY SOLUTION FOR BOREHOLE CAST-IN-PLACE PILE
GAO Zikun1，2，SHI Jianyong3
(1. School of Civil Engineering，Putian University，Putian，Fujian 351100，China；2. College of Water Conservancy and
Hydropower Engineering，Hohai University，Nanjing，Jiangsu 210098，China；3. Geotechnical Research Institute，
Hohai University，Nanjing，Jiangsu 210098，China)
Abstract：First of all，based on fast or slow-pouring of concrete and its bearing capacity analysis，quickly pour concrete generate upper limit of bearing capacity of pile foundation was argued under the same other conditions. Because of actual speed of the pouring of concrete for the construction is between the fast and slow of definition，its bearing capacity is somewhere between the two limits. Secondly，for fast pouring concrete，there is distribute pressure at soil-pile edge surface of flowing concrete. After solidification and upon reaching the design strength of bearing characteristics，the pressure value is directly related to the size of the normal distribution and this is used to define the boundary conditions of displacement and stress and deducing solving methods of this paper. Last，the theoretical solution is tested and verified by the measured data from a pile engineering. The research shows that computational results of the solutions coincide with the measured data.
2015, Vol. 34 
