基于红外热成像技术的抗滑桩土拱效应模型试验研究

发布时间：2018-07-05 08:15

本文选题：红外热像仪 + 物理模型试验　；参考：《岩土力学》2016年08期

【摘要】：采用模型试验是研究滑坡及其抗滑结构的一种有效方法,红外热像仪在滑坡模型试验中的应用是基于红外检测和热成像原理,利用红外热像仪对滑坡模型抗滑桩区域坡表温度进行有效、准确、实时地检测并记录,有助于分析滑坡破坏过程中抗滑桩所在区域温度场的变化规律,从能量的角度对抗滑桩土拱效应进行研究。试验结果揭示了滑坡抗滑桩区域温度场的分布规律,从温度场方面证实了土拱效应的存在,并揭示了土拱形成过程及其机制;抗滑桩有效地阻止了滑坡推力向桩前发展,发挥了抗滑效果;滑坡发生过程中岩土体应力场、位移场和能量变化是息息相关的。红外热成像技术的应用为抗滑桩土拱效应的研究提供了一种新的研究方法,使得从能量变化的角度研究抗滑桩等防治结构作用机制成为可能,其可行性和可靠性在模型试验中得到了验证。
[Abstract]:Using model test is an effective method to study landslide and its anti-slide structure. The application of infrared thermal imager in landslide model test is based on the principle of infrared detection and thermal imaging. The infrared thermal imager is used to detect and record the slope surface temperature of the landslide model anti-slide pile area effectively, accurately and in real time, which is helpful to analyze the variation law of the temperature field in the area where the anti-slide pile is located in the process of landslide failure. To study the effect of resisting sliding pile and soil arch from the angle of energy. The experimental results reveal the distribution law of temperature field in the landslide anti-slide pile area, confirm the existence of soil arch effect from the aspect of temperature field, and reveal the formation process and mechanism of soil arch, and the anti-slide pile effectively prevents the landslide thrust from developing to the pile front. The stress field, displacement field and energy change of rock and soil are closely related to the occurrence of landslide. The application of infrared thermal imaging provides a new research method for the study of soil arch effect of anti-slide pile, which makes it possible to study the mechanism of anti-slide pile and other prevention structures from the angle of energy change. Its feasibility and reliability are verified in the model test.
【作者单位】：中国地质大学(武汉)工程学院;
【基金】：国家自然科学基金项目(No.41272305) 国家重点基础研究发展计划“973”项目(2011CB710604)~~
【分类号】：TU473.1

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