【摘要】 随着地下空间的开发利用，能源地下连续墙越来越受到国内外学者的关注。为探索该类结构的热力学行为，本研究通过室内模型试验，分析了模型墙在黏-砂双层地基中的热力响应规律。试验过程中，利用土压力计和应变传感器进行监测，旨在分析地下连续墙的墙体横向与纵向应变、以及其与土体接触面处土压力的变化规律。试验结果表明：基坑开挖前墙体两侧纵向应变均随深度增加而逐渐减小；而基坑开挖后在墙体中部位置出现纵向应变极值；在基坑开挖前后，墙体两侧的横向应变均呈现墙体中部大、两端小的现象。同时，温度升高和基坑开挖均对墙侧土压力有明显影响。试验结果揭示了温度作用下墙体的力学行为及墙-土相互作用的变化规律，为能源地下连续墙的应用提供理论依据。更多还原

【Abstract】 Energy diaphragm walls have received increasing attention at home and abroad with the development of underground space. In order to explore the thermal-mechanical behavior of energy diaphragm walls, an laboratory model test was conducted to study the thermal response of a model wall in a clay-sand double-layered foundation. During the test, earth pressure cells and strain sensors were employed for monitoring to analyze the horizontal and vertical strains of the diaphragm wall, as well as the variation of earth pressure at the interface between the wall and the surrounding soil.The test results show that the vertical strain on both sides of the wall before excavation decrease gradually with depth.Whereas after excavation, extreme values of vertical strain appear in the middle of the wall. The horizontal strain on both sides of the wall before and after excavation is larger in the middle and smaller at both ends. Furthermore, both temperature rising and excavation has obvious effects on the earth pressure on the wall side. The test results reveal the mechanical behavior of the wall and the evolution of wall-soil interaction under thermal effects, which provides a theoretical basis for the application of energy diaphragm walls.更多还原