水下结构物在水下这种特殊的环境中会受到不同程度的损伤，其中裂缝缺陷是评估结构物安全可靠性的重要因素。
Underwater structure will be damaged in different degree in this kind of particular environment. Among these defections, the crack is the important factor to evaluate the reliability of structures.
因此，对结构损伤进行安全评估的结构健康监测技术研究对于确保海洋平台结构安全，降低维修成本以及延长服役期限都是非常必要的。
Thus, techniques for structural health monitoring in offshore platform structures are essential to ensure safety, reduce the cost of maintenance, and prolong the service life.
数值模拟结果表明，本文方法适用于塔架类结构的损伤评估。
Results of the numerical simulation show that this method is adequate for the damage evaluation of tower truss structures.
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