A hypothesis sandwich analytical theory is used, and the formulas for calculation of the creep collapse critical time is given in this paper.
运用假想夹层分析理论，导出了一个较为简便的不锈钢包壳在通常工作环境下蠕变坍塌临界时间的计算公式。
Supported by the national physical science major fund project (project number: 50238040), the paper researched the creep collapse effect of the concrete structure systematically.
本论文是在国家自然科学基金重点项目(项目编号：50238040)的支持下，系统地开展关于混凝土结构的徐变效应研究。
The mechanical model of collapse medium is investigated theoretically which revealed that the mechanical model of collapse medium is accord to non-linear nature of rock creep Kelvin model.
根据压密变形规律从理论上探讨垮落介质固结的力学模型，揭示了垮落介质固结的力学模型符合岩石蠕变开尔文模型的非线形本质；
Distribution of Triassic salt bed is very wide in Sichuan Area and the condition of salt rock creep resulting in casing collapse is existing.
四川地区三迭系盐岩层分布广泛，盐岩层蠕变挤毁套管的客观条件是存在的。
Distribution of Triassic salt bed is very wide in Sichuan Area and the condition of salt rock creep resulting in casing collapse is existing.
四川地区三迭系盐岩层分布广泛，盐岩层蠕变挤毁套管的客观条件是存在的。
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