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钢筋混凝土框架和底部框架结构被广泛应用于工程结构中,成为工业与民用建筑中的一种主要结构形式。但当结构层数增多或侧向荷载较大时,其侧向刚度表现出明显不足或分布不合理。在历次大地震中,钢筋混凝土框架的破坏情况统计表明,钢筋混凝土框架结构的破坏是比较严重的,特别是三层以上的建筑。同时钢筋混凝土结构的震后修复及重建也成为关注焦点。控制破坏部位,降低柱中剪刀或提高拄的抗剪力,提高侧向刚度,成为主要措施。考虑到钢筋混凝土框架的长处和钢材的优点,结合抗震及震后修复重建,有必要对偏心支撑钢筋混凝土框架结构(EBRCF)进行研究。
Reinforced concrete frames and bottom frame structures are widely used in engineering structures and become a major structural form in industrial and civil buildings. However, when the number of structural layers is increased or the lateral load is larger, the lateral stiffness is obviously insufficient or the distribution is not reasonable. In the previous major earthquakes, the statistics of the damage of reinforced concrete frame shows that the damage of reinforced concrete frame structure is quite serious, especially the buildings above three floors. At the same time, the post-earthquake rehabilitation and reconstruction of reinforced concrete structures have also become the focus of attention. It is the main measure to control the damaged parts, reduce the scissors in the column or increase the shearing force of the column and improve the lateral rigidity. Considering the advantages of reinforced concrete frame and the advantages of steel, combined with seismic and post-earthquake reconstruction, it is necessary to study the eccentric supported reinforced concrete frame structure (EBRCF).