防灾减灾工程学报2017，Vol.37Issue(4)：565-570,6.DOI:10.13409/j.cnki.jdpme.2017.04.009
非均匀温度场中的单桩内力响应模型试验研究
Experimental Modelling on Internal Force Response of Single Pile in Non-uniform Temperature Field
摘要
Abstract
A non-uniform temperature field in the ground forms during the utilization of the shallow geothermal energy,which results in a dynamic temperature difference on opposite sides of the foundation pile.The temperature difference may cause the bending deformation of the pile.A non-uniform temperature field was constructed in an experimental model.The temperature of soil,as well as the temperature and strain on opposite sides of the pile was investigated in the process of temperature balance.The effect of non-uniform temperature field on the internal force of pile was analyzed.The experimental results show that the non-uniform temperature field will cause bending deformation in the pile body according to the FBG strain sensors.The distribution of the bending moment along the depth of the pile is related to the temperature difference.Therefore,the influence of non-uniform temperature field on the internal force of the geo-structure should be taken into account in the applications ground source heat pump system.It is of great significance to conduct related researches to reveal the internal force variation of the foundation pile.关键词
非均匀温度场/弯矩/桩/应变/FBGKey words
non-uniform temperature field/bending moment/pile/strain/FBG分类
建筑与水利引用本文复制引用
王宜安,张丹,张春光,程健,刘子文,顾迪..非均匀温度场中的单桩内力响应模型试验研究[J].防灾减灾工程学报,2017,37(4):565-570,6.基金项目
国家自然科学基金项目(41572271)、江苏省自然科学基金项目(BK20161239)资助 （41572271）
