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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 open-hole prestressing of ring beams and structural columns with the non-prestressed brick wall under low-cycle alternating horizontal loading, the whole process of cracking and failure, failure mechanism, hysteresis characteristics, strength and stiffness are studied. , ductility, and energy consumption. The results show that, as in the absence of walls, prestressed wall openings can not only improve their resistance to cracking and loading, but also improve their deformation, ductility, and energy dissipation properties, and with the degree of prestressing. To improve and give full play to this advantage, the strengthening effect of prestressed openings and non-hole walls has a consistent regularity, which opens up new ways for earthquake resistance of masonry structures.