能源地下连续墙的热力学行为模型试验研究

高校地质学报

能源地下连续墙的热力学行为模型试验研究

董盛时，李晓昭，熊志勇，闻继飞

出版日期:2019-10-20 发布日期:2019-11-06
基金资助:
energy diaphragm wall; physical model; thermo-mechanical behavior; normal stress on interface

Physical Modeling Research on Thermo-Mechanical Behavior of Energy Diaphragm Wall

DONG Shengshi，LI Xiaozhao，XIONG Zhiyong，WEN Jifei

Online:2019-10-20 Published:2019-11-06

摘要/Abstract

摘要： 鉴于目前国内外针对能源地下连续墙的热力学行为的研究较少，开展了能源地下连续墙的室内模型试验研究。为了
研究不同换热工况以及约束条件对墙体以及墙土接触面热力学行为的影响，设计了三组对照试验。通过对试验过程中读取
的温度、应力、应变数据进行分析，探索了地下连续墙在换热过程中的温度场、墙体内的垂向应变以及接触面法向应力的
变化规律。对比研究了不同工况下墙内轴向应变以及墙土接触面法向应力数据的差异性，揭示了温升变化和约束变化对这
些参数的影响机制以及重要程度。

关键词: 能源地下连续墙, 物理模型, 热力学行为, 接触面法向应力

Abstract: Nowadays, the researches on the thermo-mechanical behavior of energy diaphragm wall lacks in contrast to its increasing
significance in energy geostructures worldwide. To study the thermo-mechanical behavior of wall and wall-soil interface under
different heating and constraining conditions, three contrast tests were conducted in a self-made laboratory model chamber. By
analysing the data obtained, this paper presented the change laws of fields regarding heat, vertical strain in wall, and normal stress on
the interface during process. Furthermore, the variations of these parameters revealed the mechanism, in which temperature changes
and constrain changes would influence the thermo-mechanical behavior of energy diaphragm wall.

董盛时，李晓昭，熊志勇，闻继飞. 能源地下连续墙的热力学行为模型试验研究[J]. 高校地质学报.

DONG Shengshi，LI Xiaozhao，XIONG Zhiyong，WEN Jifei. Physical Modeling Research on Thermo-Mechanical Behavior of Energy Diaphragm Wall[J]. Acta Metallurgica Sinica.