带芯柱的新型砌体结构抗震墙抗侧力试验研究

前期研究表明,采用销键使混凝土小型空心砌块相互咬合,对于砌体结构可有效提高其抗剪强度,改善其抗震性能。通过对5榀采用不同结构形式、不同竖向荷载作用下的带芯柱的混凝土小型空心砌块墙体进行低周往复侧向加荷试验,对新型墙体和普通墙体的变形、延性和耗能能力进行对比分析,阐述了新型墙体的破坏机理,研究了竖向荷载对新型墙体变形性能的影响,提出了新型墙体的抗震承载力试验公式。试验表明:同等条件下,新型墙体的抗震性能要优于普通墙体。

EXPERIMENTAL RESEARCH ON ASEISMATIC BEHAVIOR OF A NEW-STYLE BLOCK MASONRY WALL WITH CORE COLUMNS

Preliminary research shows that adoption of pin key to connect small hollow concrete masonry blocks may effectively increase the shearing strength of the masonry structure and improve its aseismic performance. Five small hollow concrete masonry block walls of different structures and under different vertical loads are used to conduct low-circle reciprocating side loading test. Deformation, ductility and energy consumption of new wall and ordinary wall are compared and analyzed to expound the failure mechanism of the new wall and to research the influence of vertical load on deformability of new wall. The formula for aseismic bearing strength test of new wall is proposed. The test indicates that under same conditions, aseismic performance of new wall is better than the ordinary wall.