框支密肋复合墙体拟静力试验研究

Pseudo-static experiment of multi-ribbed composite wall supported on frame shear-wall structure

摘要:

为研究底部大空间框支密肋复合墙结构的抗震性能,结合新型斜交肋格密肋复合墙板结构,进行2榀底部框架-剪力墙上部密肋复合墙体结构1/2比例模型拟静力试验.分析正交肋格和斜交肋格框支密肋复合墙体在低周反复荷载作用下的破坏过程、传力机理,探讨结构层间位移滞回特性,各构件钢筋的荷载-应变曲线,墙体的残余变形率.试验结果表明：框支密肋复合墙结构抗震性能优越,墙板独特的斜交式肋格构造形式有效提高结构的延性、变形性能, 抗倒塌能力和可修复性.

Abstract:

Seismic performance of the multi-ribbed composite wall structure with large space at the bottom, combined with the new oblique frame-grid used in multi-ribbed structure was studied in this paper. The pseudo-static experiment of two 1/2-scale multi-ribbed composite wall supported on frame shear-wall structure was conducted. Under the low reversed cyclic loading, the failure process and force transfer mechanism of the oblique and orthogonal frame-gird specimens was analyzed. The hysteretic characteristic of inter-story displacement, steel load-strain curves of the members, residual deformation ratio of the specimen was discussed. The results show that the structure have good seismic performance. The unique oblique frame-grid design can improve the overall ductility, deformation, collapse-resistant capacity and reparability.