000207744 001__ 207744
000207744 005__ 20181203023842.0
000207744 022__ $$a0008-3674
000207744 0247_ $$2doi$$a10.1139/cgj-2014-0403
000207744 037__ $$aARTICLE
000207744 245__ $$aBehaviour of a group of energy piles
000207744 269__ $$a2015
000207744 260__ $$aOttawa$$bCanadian Science Publishing, Nrc Research Press$$c2015
000207744 300__ $$a17
000207744 336__ $$aJournal Articles
000207744 520__ $$aA full-scale experimental site with four energy test piles was built on the campus of the Swiss Federal Institute of Technology in Lausanne, Switzerland. This site was used to investigate interaction effects within a group of energy piles. First, the ground constraints were evaluated by testing the piles without any structure on top. Next, each pile was individually tested once the overlying structure was built which provided information on the structural constraints and allowed the quantification of the pile-structure-pile interactions. Finally, the four test piles were simultaneously heated to quantify the group effects. A thermal response test was performed on one pile and the thermohydraulic response of the soil between the piles was monitored with piezometers and thermistors. Load redistributions may occur in mixed foundations, i.e. with conventional and energy piles, because of differential displacements. Conversely, heating an entire foundation increases the individual pile displacements but reduces the differential displacements and consequently the pile thermal efforts. Radial strains may also have a significant impact on the axial thermomechanical response of the piles in stiff soil layers. Heat barely propagated farther than a couple of meters with no significant pore water pressure variation observed.
000207744 6531_ $$aenergy pile
000207744 6531_ $$afull-scale in situ experimental site
000207744 6531_ $$aGroup effect
000207744 6531_ $$aThermomechanical response
000207744 6531_ $$aThermal response test
000207744 700__ $$0245249$$aMimouni, Thomas$$g196138
000207744 700__ $$0240226$$aLaloui, Lyesse$$g105611
000207744 773__ $$j52$$k12$$q1913-1929$$tCanadian Geotechnical Journal
000207744 909C0 $$0252080$$pLMS$$xU10264
000207744 909CO $$ooai:infoscience.tind.io:207744$$particle$$pENAC
000207744 917Z8 $$x105611
000207744 917Z8 $$x105611
000207744 917Z8 $$x105611
000207744 937__ $$aEPFL-ARTICLE-207744
000207744 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000207744 980__ $$aARTICLE