框架-密肋耗能复合墙结构与框架填充墙结构抗震性能的对比分析

Comparative analysis of seismic performance on frame-multiribbed composite wall structure and Infilled Frame Structure

用密肋耗能复合墙取代传统的砖墙作为框架结构中的填充墙,形成框架-密肋耗能复合墙结构.通过建立简化的刚架-整体斜压杆模型,运用静力弹塑性分析方法对框架-耗能复合墙结构与框架填充墙结构在周期、层间位移角、局部变形等几方面进行对比分析.计算结果表明,耗能复合墙通过优化设计即可调整抗侧刚度并能有效耗散地震能量,在中高地震烈度区以密肋耗能复合墙代替砖填充墙后,结构的抗震性能明显优于普通框架-砖填充墙结构.

A new structural system called frame-multi-ribbed composite wall structure is generated by using the multi-ribbed composite wall as the infilled wall in frame structure to replace the traditional infilled wall. The equivalent oblique compression bar model, suitable for multi-ribbed composite wall, is established for static elastoplastic analysis. Compared with the infilled wall, the calculating result of the static elastoplastic analysis for multi-ribbed composite wall on natural period, story drift angle, lo- calized deformation shows that such this kind of wall can raise the lateral stiffness of the structure and dissipate the earthquake energy. The seismic performance of frame-multi-ribbed composite wall struc- ture is much better than the infilled frame structure, especially on area with middle-high earthquake intensity.