高铁路基土混态摩擦的时态热力学典则度量及工后隆沉阈值

The study of rate-dependent and partially reversible thermodynamics canonical measurement for composite foundation soil of high-speed railway will be carried out in this proposal. The mixed rheological thermodynamics and mechanical characterestic of subsidence-rising after construction is compared between the subsidence pridiction value and cumulative plastic behavior. This study may provide bases for subsidence-rising modulus design and control method after construction. Through comparing the geotechnical porous thermodynamic modeling tools with the engineering project detecting data, the forecast capability of proposed model and methods will be intensive tested. Rational inequation of rheological energy and thermodynamics physics for porous geomaterials will be definited based on the deformation detection value. The damaged conditions of frictional contact meso fabric is achieved by introducing the multi-dimensional nonlinear strength theory and energy variational principle. The rheological settlement character and the plastic behavior of composite roadbed and deformation of plane will be discussed in details. The extreme values of damage conditions and soil parameters for deformation control domain may be determined.,According to the theoretical research for subsidence-rising data of orbital plane after long-term construction; the forecast ability of the proposed model may be validated. The study of soil rheological disspative theory based on geomaterial thermodynamics and subsidence-rising model is developed in details. The proposed theory will be verified by on-site test within a specific area (such as the Jinghu or Hada section) for China high-speed railway correspondingly. The method will provide with deformation behavior forecasting and prevention-control for the orbital plane long-term settlement. Through the testing test data of orbital plane, the reasonable rheological dissipative energy and the soil parameters are constituted. The proseded methods should provide with a theoretical exploration for behavior description and soil-structure interaction prediction. In this study, through the test verification and on-site check for theory, it will help to construct our high-speed railway subsidence-rising prediction sysytem and deepen understanding the soil-structure interaction behavior in more details.

本研究针对我国高铁路基土重塑散粒体摩擦接触特性的部分可逆热力学表征开展其时态典则度量，通过对比预测其沉降变形及累积塑性行为，探索其工后隆沉的混态热-力特性。本研究可能为界定流变影响的工后隆沉模值设计及工控方法提供依据。 尝试结合岩土多孔介质的热力学建模手段，开展往复荷载下高铁路基重塑土混态流变特性的试验值与工程验证对比，基于轨道面隆沉模量，界定承载多孔岩土介质热物理及流变能的合理构成不等式；引入多维非线性强度理论及能量变分原理逼近其摩擦接触细观组构的破损条件；对比工后隆沉监测数据与理论模型预测值，确定拟（真）三轴岩土体变形控制的参数极值域；该研究为深化理解其土结相互作用的性态描述、隆沉控制及预测预报提供帮助，对验证提高我国复杂地力环境下高铁路基土混态热物理本构模型的预测能力、细化特定区域（段）高铁（如哈大、京沪段）土性参数的控制作用、为我国高铁工后隆沉控制技术的依据提供理论探索。

本研究针对我国高铁路基土重塑散粒体摩擦接触特性的部分可逆热力学表征开展其时态典则度量，通过对比预测其沉降变形及累积塑性行为，探索其工后隆沉的混态热-力特性。本研究可能为界定流变影响的工后隆沉模值设计及工控方法提供依据。 尝试结合岩土多孔介质的热力学建模手段，开展往复荷载下高铁路基重塑土混态流变特性的试验值与工程验证对比，基于轨道面隆沉模量，界定承载多孔岩土介质热物理及流变能的合理构成不等式；引入多维非线性强度理论及能量变分原理逼近其摩擦接触细观组构的破损条件；对比工后隆沉监测数据与理论模型预测值，确定拟（真）三轴岩土体变形控制的参数极值域；该研究为深化理解其土结相互作用的性态描述、隆沉控制及预测预报提供帮助，对验证提高我国复杂地力环境下高铁路基土混态热物理本构模型的预测能力、细化特定区域（段）高铁（如哈大、京沪段）土性参数的控制作用、为我国高铁工后隆沉控制技术的依据提供理论探索。