加固是提高钢筋混凝土结构安全度、减少事故隐患，延长结构使用寿命的有效方法。
Reinforcement is an effective way of improving the structural safety, decreasing accidents, prolonging the life of concrete structure.
其本质上的优点在于结构安全度和稳定性高，施工快速、经济，对环境的负面影响小。
Its advantage in essence lies in structure's degree of safety and stability are high, construction is quick and economy, the negative effect on the environment is small.
预应力管道真空辅助压浆工艺是提高后张预应力混凝土结构安全度和耐久性的有效措施。
The prestressing duct vacuum grouting workmanship is an effective measure for improving the safety and durability of the post-tensioning concrete structures.
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