预应力开洞砖墙抗震性能的试验研究

Exoerimental Investigation on Aseismic Behavior of Prestressed Holed Brick Walls

通过对带圈梁和构造柱的开洞预应力与非预应力砖墙在低周交变水平加载下的对比试验,研究了开裂与破坏的全过程、破坏机理、滞回特性、强度、刚度、延性与耗能.结果表明:与无洞墙一样,预应力开洞墙体既能提高其抗裂和承载的能力,又能改善其变形、延性及耗能性能,并随预应力度的提高而更能充分发挥这种优势.预应力对开洞和无洞墙体的加强作用具有一致的规律性,为砌体结构抗震开辟了新的途径.

By comparing the tests of prestressed and non-prestressed holed brick walls with peripheral beams and constuctional columns under cyclic lateral loading, appearance and development of cracks, failure mechanism, hysteretic behavior, strength, stiffness ductility and energy dissipation of brick walls are investigated. It is found that prestressing holed walls can increase its strength and improve the behavior of displacement, ductility and energy dissipation. The more prestressed, the more obviously. The results of studies give the fundation of experiment and theory for the aseismic design of prestressed holed brick walls.