本文采用断裂力学方法来估算结构构件的疲劳寿命，这其中主要围绕裂纹扩展速率表达式展开研究。
Fracture mechanics is adopted to estimate the fatigue life of structural members, and among the rest, crack growth rate formula is studied.
本文就生命线工程研究中的若干关键力学问题展开论述。
In the present paper some key mechanics problems in the lifeline engineering researches have been inquired into.
正截面加固试验中，分别对粘贴纤维、钢板对钢筋混凝土T梁正截面力学行为影响展开研究。
In the reinforcement experiments of right section, the influence of rc T-beam the mechanics behavior by FRP, steel plate was studied.
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