改善钢筋混凝土剪力墙抗震性能方法综述

Review on methods of improving seismic performance of reinforced concrete shear wall

钢筋混凝土剪力墙作为高层建筑结构中重要的抗侧力构件,具有较好的抗震性能,通常是作为建筑结构中的第一道抗震防线,能降低结构构件和非结构构件在强震作用下的损伤。历次震害现象表明,钢筋混凝土剪力墙在遭遇强震作用时可能产生比较严重的裂缝、钢筋屈曲等破坏,造成修复和加固困难,且成本较高,不能够满足人们对于震后快速恢复生产生活的需求。为了改善钢筋混凝土剪力墙的抗震性能,提高剪力墙的可恢复功能,国内外学者开展了大量的研究。综述了改善钢筋混凝土剪力墙抗震性能的三种方法:改善混凝土材料力学性能、改善配筋形式和改善剪力墙的可恢复功能;重点介绍了纤维改善混凝土剪力墙的抗震性能,并分析纤维材料对混凝土基体的增强机理。

As an important lateral force resistant component in high-rise building structure, reinforced concrete shear wall has good seismic performance, used as the first seismic defense line in building structures, which can reduce the damage of structural members and non-structural members under strong earthquake. The previous earthquake phenomena shows that reinforced concrete shear walls may produce serious cracks, steel buckling and other damages when encountering strong earthquakes, resulting in difficult repair and reinforcement, and high cost, which can’t meet people’s needs for rapid recovery of production and life after an earthquake. In order to improve the seismic performance of reinforced concrete shear walls and improve the earthquake-resilient of shear walls, scholars at home and abroad have carried out a lot of research. This paper summarized three methods to improve the seismic performance of reinforced concrete shear wall: improving the mechanical properties of concrete materials, improving the reinforcement form and improving the earthquake-resilient of shear walls. With emphasis on fiber improving the seismic performance of concrete shear wall, the strengthening mechanism of fiber material to concrete matrix is analyzed.