土遗址加固保护无损检测中的温度场特性研究

项目名称： 土遗址加固保护无损检测中的温度场特性研究

项目编号： No.41272319

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 张得煊

作者单位： 上海师范大学

项目金额： 84万元

中文摘要： 在我国丝绸之路、黄河流域的古代土建筑遗址加固保护工程中，急需一种非接触、无损伤的检测方法来评价加固效果。而这项工作必须建立在有明确物理意义的量化参数的基础上，才能够科学地、规范地进行。本项目拟运用室内试验、模型试验、现场试验以及相关的数值计算分析等方法，系统研究利用温度场(红外热像法)进行无损检测中需要解决的关键科学问题：1）土遗址加固前后土体物理场与温度场参数之间的机理与内在联系；2）用温度场参数代替物理场参数的表达形式；3）在现场复杂环境条件下,土遗址土体三维热传导计算模型的简化方法。并在此基础上形成用红外热像检测土遗址的，定量化、非接触、无损伤的评价方法。本研究项目将土力学、传热学原理与现代无损检测技术有机地结合，拓宽了岩土工程学的研究范围，对我国西部地区的土遗址风化机理研究以及加固保护方法的发展具有十分重要的科学意义。

中文关键词： 土遗址；无损检测；热传导；红外热像；温度场

英文摘要： In the protection of many ancient earthen sites along the Silk Road and in the Yellow River basin area, a non-destructive testing method is urgently needed to evaluate the reinforcing effects of earthen sites. And the evaluation method must be based on the quantified parameters with definite meanings in physics scientifically and reasonably. This research will apply laboratory test, model test, field test and numerical analysis to study following key issues: 1) The mechanisms of physical field and temperature field, and the internal connections between them before and after the reinforcement. 2) The method of replacing physical field parameters by temperature field parameters to quantify the evaluation indicator of reinforcement in protecting ancient earthen sites. 3) Simplifying the three-dimensional heat conduction model of earthen sites, in the complex atmospheric environment. And on the basis of the studies above, develop a quantitative and non-destructive way of evaluating reinforcement effect of ancient earthen sites, using infrared imaging technique. This research combines soil mechanics, heat transfer theory, and non-destructive testing organically, which has broadened the range of rock and soil engineering, and will play a significant role in studying the weathering mechanism and in developing the reinf

英文关键词： Earthen sites；Nondestructive testing；heat conduction；infrared thermography；temperature field