04-01-2009, 03:15 AM
@ Bhowmik, R u student or practising engineer? Where r u from?
Pile resists load by friction (Pf) or end bearing (Pb). You must have both this values along with permissible settlement (s) of pile. You can find Pf and Pb from LOAD-SETTLEMENT graph of pile supplied by geotech consultant.
Pf/s gives horizotal spring value and Pb/s gives vertical one. Which can be used in SAFE.
Hope this will help.
Pile resists load by friction (Pf) or end bearing (Pb). You must have both this values along with permissible settlement (s) of pile. You can find Pf and Pb from LOAD-SETTLEMENT graph of pile supplied by geotech consultant.
Pf/s gives horizotal spring value and Pb/s gives vertical one. Which can be used in SAFE.
Hope this will help.
(03-31-2009, 04:31 PM)bhowmik Wrote: Look, when one model a single pile for horizontal fixity/capacity, it is simple: divide the pile into no of small length, then multiply the perimeter area with subgrade reaction and put the multiplied result as spring at corresponding node. But when you model pile below foundation of a building or bridge, you should model the pile point at foundation as a vertical spring and horizontal spring at the same time. how it can be calculated?