Thermo-mechanical behaviour of floating energy pile groups in sand |
| |
| Authors: | " target="_blank">Huai-feng Peng Gang-qiang Kong Han-long Liu Hossam Abuel-Naga Yao-hu Hao |
| |
| Institution: | 1.Key Laboratory of Geomechanics and Embankment Dam Engineering,Hohai University,Nanjing,China;2.Key Laboratory of New Technology for Construction of Cities in Mountain Area,Chongqing University,Chongqing,China;3.College of Science, Health and Engineering,La Trobe University,Victoria,Australia |
| |
| Abstract: | This paper presents the experimental results of small-scale model tests of an instrumented floating energy pile group in which the piles were embedded in dry medium-dense sand and subjected to the seasonal temperature pattern of the city of Nanjing in China. The study also included a model test to assess the effect of including nonthermal piles on the thermo-mechanical behaviour of the floating energy pile group. For comparison, a model test of a single floating energy pile embedded in the same soil and subjected to a similar temperature pattern was also conducted. The results show that the thermo-mechanical behaviour of an energy pile group is different from that of a single energy pile in terms of the thermally induced change in axial pile stress and the displacement of the pile top and tip. This difference in behaviour could be explained by the higher lateral confining pressure expected on a single pile than on a pile in a group due to pile interaction effects, which could lead to different end restraint boundary conditions. We conclude that the thermo-mechanical behaviour of an energy pile is controlled mainly by the end restraint boundary conditions. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
