Prestressed steel strips were used to provide quick retrofit for seriously damaged structures after earthquake, for the purpose of improving the seismic resistance capacity of seismic-damaged reinforced concrete frames in case of aftershock and providing possible conditions for comprehensive post-earthquake strengthening. In this paper, the retrofitting effect of retrofitted damaged structure was validated by means of pseudo-static test on 1/2 scaled undamaged RC frame with single span and three stories and retrofitted seismic-damaged structure using prestressed steel trips. The comparison of seismic performance including bearing capacity, stiffness, ductility and energy dissipation capacity was discussed to verify the retrofitting effect. According to the results, it was found that post-earthquake reinforced concrete frame retrofitted by prestressed steel strips could develop similar seismic performance as original frame and reduce the potential in structural failure when subjected again to an earthquake. The results also indicated that prestressed steel strips could be taken as a quick retrofit technology, providing effective and quick strengthening of damaged structure and it could help avoid unexpected loss of life and economy after earthquake.

预应力钢带用于在地震后对严重受损的结构进行快速翻新，目的是提高在发生余震的情况下钢筋混凝土框架的抗震能力，并为全面的地震后加固提供可能的条件。本文通过在单跨三层的1/2比例无损RC框架上进行了拟静力试验，并通过预应力钢结构加固了地震破坏结构，通过拟静力试验验证了改造破坏结构的加固效果。讨论了抗震性能的比较，包括承载能力，刚度，延性和能量耗散能力，以验证改造效果。根据结果​​，结果发现，用预应力钢带改造的地震后钢筋混凝土框架可以产生与原始框架类似的抗震性能，并减少再次遭受地震时结构破坏的可能性。结果还表明，预应力钢带可以作为一种快速改造技术，对受损结构提供有效，快速的加固，并有助于避免地震后意外的生命和经济损失。