基于分数阶模式的高拱坝变形安全监控研究构想

Research proposal for deformation safety monitoring of high arch dams based on fractional-order modeling theory

为科学监控服役过程中高拱坝的变形安全,基于高拱坝结构特性和服役特点,在分析分数阶元件模型、混凝土坝物理力学参数反演、混凝土坝变形安全监控发展动态的基础上,依据分数阶建模理论,提出了一种高拱坝变形安全监控研究思路与构想:围绕高拱坝变形性态分数阶数值模拟以及基于分数阶模式的单测点和测点群变形安全监控这两个互相关联的科学问题,沿着“分数阶元件模型→物理力学参数反演→单测点变形安全监控→测点群变形安全监控”的研究主线,遵循“基础到深入、简单到复杂、现象到本质、理论到应用、局部到整体、一维到多维”的原则开展研究。为实现研究构想,重点需攻克三维高应力状态下高拱坝加速流变效应分数阶元件模型、分数阶元件模型弹性和黏弹性物理力学参数反演,以及高拱坝时效变形分数阶分析模型这3个关键的科学技术问题。

Considering the structural characteristics and operation characteristics of high-arch dams,and based on the shortcomings of existing research in the aspects of fractional-order element models,physical and mechanical parameter inversion of concrete dams,and deformation safety monitoring development of concrete dams,a research proposal is developed based on the fractional-order modeling theory to scientifically monitor the deformation behavior of high arch dams in operating conditions.Fractional-order numerical simulation of deformation characteristics of high arch dams and fractional-order model-based deformation safety monitoring approaches of single observation point and observation point group are two interrelated scientific problems of the research proposal.The main research process is as follows,fractional element model construction,physical and mechanical parameter inversion,deformation monitoring of single observation point,deformation monitoring of observation point group.Basic to in-depth,simple to complex,phenomenon to essence,theory to application,local to whole,one-dimensional to multidimensional are the research principles.Three key scientific and technical problems should be solved to realize the research proposal,which are fractional-order element model of accelerated rheology of high arch dams in three-dimensional high stress state,elastic and viscoelastic parameter inversion of fractional element model,and fractional-order analysis model of time-dependent deformation of high arch dams.