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钢丝绳 ̄聚合物拟砂静浆力面试层验交研叉究条带加固砌体墙
蒋济同1, 王家存1, 周献祥2, 隋正昂1
摘 要

(1 中国海洋大学工程学院, 青岛 266100; 2 中国人民解放军军事科学院国防工程研究院,北京 100850)

摘要: 对 9 片砌体墙进行拟静力试验,建立钢丝绳 ̄聚合物砂浆面层交叉条带加固砌体墙的抗剪承载力公式并研究组合墙体受力机理。 试验表明:在砌体墙单侧或者双侧增设 25mm 厚、250mm 宽的钢丝绳 ̄聚合物砂浆面层可以提高砌体墙抗剪承载力,组合墙体承载力较未加固墙体提高约 70%,由于交叉条带对墙体的约束作用使得墙体的延性也有所提高。 利用试验数据拟合出加固后墙体的抗剪承载力参考计算公式,为了保证安全,对钢丝绳和聚合物砂浆所承担的抗剪承载力乘以 0. 9 的安全系数,最终数据表明墙体调整后的公式计算值对实际承载力的包络性较好,可在相关的研究分析中作为参考计算公式使用。

关键词: 交叉条带; 砌体加固; 抗剪承载力

中图分类号:TU398. 7 文献标志码:A 文章编号:1002 ̄848X(2022)04 ̄0136 ̄06

DOI:10. 19701 / j.jzjg.20200459

Experimental study on static behavior of masonry wall reinforced by wire rope ̄polymermortar surface layer cross strip

JIANG Jitong1, WANG Jiacun1, ZHOU Xianxiang2, SUI Zheng’ang1

(1 School of Engineering, Ocean University of China, Qingdao 266100, China; 2 Institute of Defense Engineering,AMS, PLA, Beijing 100850, China)

Abstract: A pseudo ̄static test was carried out on 9 masonry walls, the formula for the shear capacity of the masonry wallreinforced by wire rope ̄polymer mortar surface layer cross strip was established and the force mechanism of the compositewall was studied. The test results show that adding 25mm thick and 250mm wide wire rope ̄polymer mortar surface layer onboth sides of the masonry wall can improve the shear capacity of the masonry wall, and the bearing capacity of thecomposite wall is about 70% higher than that of the unreinforced wall, and the ductility of the wall s is also improved due tothe restrictive effect of the cross strip on the wall. The test data was used to fit a reference calculation formula for the shearcapacity of the reinforced wall. In order to ensure safety, multiply the shear capacity of the wire rope and polymer mortar bya safety factor of 0. 9. The final data show that the adjusted formula calculation value of the wall has a better envelope forthe actual bearing capacity, and can be used as a reference calculation formula in related research and analysis.

Keywords:cross strip; reinforcement of masonry walls; shear capacity

第一作者:蒋济同,博士,教授,主要从事结构检测鉴定与加固,Email:jtjiang@ ouc.edu.cn。

[引用本文] 蒋济同,王家存,周献祥,等. 钢丝绳 ̄聚合物砂浆面层交叉条带加固砌体墙拟静力试验研究 [ J]. 建筑结构,2022,52(4):136 ̄141,92. JIANG Jitong, WANG Jiacun, ZHOU Xianxiang, et al. Experimental study on staticbehavior of masonry wall reinforced by wire rope ̄polymer mortar surface layer cross strip[ J]. Building Structure,2022,52(4):136 ̄141,92.

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