使用钢网和塑料网对砖砌体进行平面内抗震加固。

In-Plane Seismic Strengthening of Brick Masonry Using Steel and Plastic Meshes.

作者信息

Ullah Safi, Farooq Syed Hassan, Usman Muhammad, Ullah Burhan, Hussain Manzoor, Hanif Asad

机构信息

Military College of Engineering (MCE), National University of Sciences and Technology (NUST), Risalpur 24090, Pakistan.

School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan.

出版信息

Materials (Basel). 2022 Jun 6;15(11):4013. doi: 10.3390/ma15114013.

DOI:10.3390/ma15114013

PMID:35683311

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9182107/

Abstract

Unreinforced masonry structures are vulnerable to seismic loading due to their brittle behavior, and must therefore be strengthened. This paper presents the seismic performance of brick masonry strengthened with steel and plastic meshes. For this purpose, twenty masonry wallets of (600 × 600 × 113 mm) were constructed, keeping the same materials and workmanship. Fifteen of them were reinforced using steel and plastic meshes. These specimens were tested for in-plane static cyclic diagonal tension (shear) behavior. The critical parameters, such as shear stress, strain, failure modes, ductility, energy dissipation, and stiffness degradation were investigated. Compared to reference and plastic-reinforced specimens, the steel-reinforced samples were found to be highly effective. Furthermore, the recommended category of steel increased the shear capacity, energy dissipation, and ductility ratio by 1.3, 14, and 6.3 times, respectively.

摘要

无筋砌体结构由于其脆性表现而容易受到地震荷载的影响，因此必须进行加固。本文介绍了用钢网和塑料网加固的砖砌体的抗震性能。为此，制作了20个尺寸为（600×600×113毫米）的砌体试件，保持材料和工艺相同。其中15个用钢网和塑料网进行了加固。对这些试件进行了平面内静态循环对角拉伸（剪切）性能测试。研究了诸如剪应力、应变、破坏模式、延性、能量耗散和刚度退化等关键参数。与参考试件和塑料加固试件相比，发现钢加固试件非常有效。此外，推荐的钢种分别使抗剪承载力、能量耗散和延性比提高了1.3倍、14倍和6.3倍。