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结合寒区水工建筑物的稳定性问题,对寒区水工建筑物应力条件的分析是一个复杂的过程。通过流变学模型以及使用计算机有限元计算的数值方法,对寒区水工建筑物应力条件进行分析。指出:(1)建筑热弹性力学(建筑热流变学),不同侧重点条件下可以分为如下四条分支:经典的温度影响弹性理论,包括超高温和超低温,接近绝对零度;温度变化中的塑性理论、黏度、蠕变理论和黏塑性流动理论(变形理论);动态弹性(弹性动力学),包括热冲击和热弹性力学的部分,考虑到变形场和温度的相互影响;应用的热弹性力学(热流变学)。(2)土堤坝应力应变条件的计算是数学物理学的一个复杂问题。其主要在于解冻土壤力学方面的流变学问题。(3)通过使用增量塑性应变和应力之间的联系和非关联规律来制作应力应变条件的各种模型,并引入考虑加载土壤膨胀的参数,可以解决土堤坝的很多问题。(4)使用计算机有限元计算的数值方法可以解决土堤坝研究中的各种问题。
Combining with the stability problems of hydraulic structures in cold regions, the analysis of stress conditions of hydraulic structures in cold regions is a complicated process. Based on the rheological model and the numerical method using the computer finite element method, the stress conditions of hydraulic structures in the cold area are analyzed. It is pointed out that: (1) Thermoelasticity of buildings (building heat rheology) can be divided into four branches under different emphasis conditions: classic temperature-dependent elastic theory including ultra-high temperature and ultra-low temperature, close to absolute zero; plasticity Theory of Viscosity, Creep Theory and Theory of Viscoplastic Flow (Theory of Deformation); Dynamic Elasticity (Elastic Dynamics), including Thermal Shock and Thermoelastic Mechanics, Considering the Interaction between Deformation Field and Temperature; Applied Thermoelastic Mechanics (Thermal Rheology). (2) The calculation of stress and strain conditions of earth dam is a complex problem in mathematical physics. The main problem lies in the rheological problems of thawing soil mechanics. (3) Many models of earth-rock dams can be solved by making various models of stress-strain conditions by using the relation between incremental plastic strain and stress and the non-relational rule, and introducing the parameters considering soil dilatancy. (4) The numerical method using computer finite element method can solve all kinds of problems in earth dam research.