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线性徐变问题的两个定理及对计算方法的简化

TWO THEOREMS ON LINEAR CREEP PROBLEMS AND THEIR APPLICATIONS

  • 摘要: 在大体积混凝土结构中,徐变应力的分析是个十分重要的问题。本文在线性徐变条件下,(1)导出了关于徐变度和松弛系数的两个定理;(2)提出了直接由徐变度求松弛系数的一种递推公式;(3)对求解徐变问题的初应变法和初应力法,导出了对于任意的松弛系数和徐变度表达式的一般递推公式,从而简化了计算方法,避免了应变或应力历史资料的存贮,节省计算机的大量存贮量。

     

    Abstract: In this paper,based on linear creep assumption,(1) tWo theorems about creepcoefficient C(t)and relaxation coefficient K_p(t,)are dirived, i.e.if the time, the creep coefficient and relaxation coefficient satisfy the following equations:(2)the recurrence formula of solving the relaxation coefficient K_p(t,)directly from thecreep coefficient C(t)is presented;(3)the general recurrence formulas of initial strainmethod and initial stress method for any kinds of expressions of C(t,)and K_P(t, )aredirived,they can...

     

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