不同框格形式密肋复合墙体抗震性能对比分析

密肋复合墙体结构是近年来出现的一种建筑结构新体系,具有多方面的优点。结合课题组前期的3块不同框格形式(三肋柱复合墙体、标准复合墙体、五肋柱复合墙体)1/2比例的密肋复合墙体低周反复试验结果,通过对其承载力、延性、耗能能力、滞回曲线、骨架曲线及破坏模式等抗震性能进行了对比分析。结果表明:由于五肋柱复合墙体发生弯曲型破坏,外框柱过早破坏退出工作,而三肋柱复合墙体与标准复合墙体均发生剪切型破坏,砌块、墙板、外框依次发生破坏,两者之间相比较,标准复合墙体抗震性综合比较要好于三肋柱复合墙体。试验结果可为实际工程中墙板设计及制作提供理论依据。

Comparative Analysis on Seismic Performance of Multi-ribbed Composite Walls with Different Frame-lattice Forms

According to different frame-lattice forms,the multi-ribbed composite walls can be mainly classified as the three-rib columns, standard columns and five-rib columns.Combined with the studying team's previous test results of these three kinds of 1/2-scaled multi-ribbed composite walls under low-frequency cyclic loading,the seismic performances of the walls such as bearing capacity,ductility,energy dissipation capacity,hysteretic curves,outline curves and failure modes are comparatively analyzed.The test results can be concluded as follows: as the bending failure and outside frame columns' earlier failure occur in the multi-ribbed composite wall with five-rib columns,the wall would retreat from the work earlier than two others while they have shearing-failures and failures of filled blocks,wall slabs and outer frames in turn.Compared with the composite wall of three-rib columns,the standard composite wall's comprehensive seismic performance is better.The experimental results can provide the theoretical basis for the design and making of wall slabs in the practical engineering.