钢筋网-水泥砂浆面层加固中高砖砌体墙抗震性能试验

Experiment on Seismic Performance of Medium-height Brick Masonry Wall Strengthened with Steel-meshed Cement Mortar

为了进一步探讨钢筋网-水泥砂浆面层加固中高砖砌体墙的抗震性能,对2组4片中高砖砌体墙试件进行了低周反复荷载试验,2组试件的高宽比分别为1.33和2.0。介绍了砖砌体墙和加固试件的破坏过程,对比分析了各试件的承载力、变形及抗侧刚度等抗震性能差异。最后,针对中高砖砌体墙的受力特点,结合试验结果提出了钢筋网-水泥砂浆面层加固中高砖砌体墙的构造措施建议。研究结果表明:钢筋网-水泥砂浆面层可以明显提高中高砌体墙的水平承载力和变形能力,亦可以一定程度上提高其抗侧刚度。

In order to investigate the seismic performance of medium-height brick masonry wall strengthened with steel-meshed cement mortar, the low cyclic reversed loading tests for twogroups of four pieces masonry walls were performed with the height-to-width ratio of 1.33 and 2.0. The failure process of the specimens was introduced, and the differences of seismicperformance, such as bearing capacity, deformation and lateral stiffness were compared and analyzed. Finally, in view of stress characteristics of medium-height brick masonry wall, someconstruction measures were proposed to the strengthening method of steel-meshed cement mortar based on the experiment results. Research results show that the steel-meshed cement mortar canimprove horizontal bearing capacity and the deformation capacity of the medium-height brick masonry wall, and can also improve its lateral stiffness to some extent.