Experimental Study on Seismic Behavior of Masonry Walls with Different Height‑Width Ratio Strengthened by HFMRPC

WANG Xin; GAO Yongchao; CHEN Hao; LUAN Xueli; REN Xian; SU Zhe

doi:10.13409/j.cnki.jdpme.20220519005

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Experimental Study on Seismic Behavior of Masonry Walls with Different Height‑Width Ratio Strengthened by HFMRPC

更新时间：2025-09-25

- Experimental Study on Seismic Behavior of Masonry Walls with Different Height‑Width Ratio Strengthened by HFMRPC
- Journal of Disaster Prevention and Mitigation Engineering Vol. 43, Issue 5, Pages: 1057-1066(2023)
- 作者机构：
  
  1.山东建筑大学土木工程学院,山东济南 250101
  2.山东建筑大学工程鉴定加固研究院有限公司,山东济南 250114
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.20220519005
  CLC： TU362
- Received：19 May 2022，
  
  Revised：2022-08-03，
  
  Published：15 October 2023
- 稿件说明：
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王欣,高永超,陈浩等.HFMRPC加固不同高宽比砌体窗间墙抗震性能试验研究[J].防灾减灾工程学报,2023,43(05):1057-1066.

WANG Xin,GAO Yongchao,CHEN Hao,et al.Experimental Study on Seismic Behavior of Masonry Walls with Different Height‑Width Ratio Strengthened by HFMRPC[J].Journal of Disaster Prevention and Mitigation Engineering,2023,43(05):1057-1066.
王欣,高永超,陈浩等.HFMRPC加固不同高宽比砌体窗间墙抗震性能试验研究[J].防灾减灾工程学报,2023,43(05):1057-1066. DOI： 10.13409/j.cnki.jdpme.20220519005.

WANG Xin,GAO Yongchao,CHEN Hao,et al.Experimental Study on Seismic Behavior of Masonry Walls with Different Height‑Width Ratio Strengthened by HFMRPC[J].Journal of Disaster Prevention and Mitigation Engineering,2023,43(05):1057-1066. DOI： 10.13409/j.cnki.jdpme.20220519005.

摘要

目前广大农村地区拥有大量不符合抗震要求的砌体结构房屋，因此，针对老旧砌体结构房屋进行加固是一门值得研究的课题。为了研究混杂纤维改良活性粉末混凝土（HFMRPC）加固不同高宽比砌体窗间墙的抗震性能，对1面作为对照组的未加固砌体墙和3面不同高宽比的面层加固砌体墙进行了低周往复荷载试验。对比分析了4面墙体的破坏模式、滞回曲线和骨架曲线等抗震性能指标。试验结果表明：HFMRPC面层加固能够有效提高墙体的承载能力，峰值荷载提高约42%；HFMRPC面层对砌体窗间墙具有良好的约束作用，能够有效提升墙体的延性，延性系数提升约199%；HFMRPC面层加固后墙体耗能能力显著提升，累积耗能约提升98%；高宽比是影响墙体破坏模式的重要因素，随着高宽比的减小，砌体墙的承载能力提高，试件的破坏模式趋向于脆性破坏，相反随着高宽比的增大，砌体墙的耗能能力提高，试件趋向于延性破坏。根据试验结果进行了墙体抗剪、抗弯承载力计算分析，并提出了适用于HFMRPC面层加固的抗剪承载力计算公式，可为实际工程应用提供理论基础。

Abstract

At present， there are a large number of masonry structures that do not meet the seismic requirements in the vast rural areas， so it is a topic worth studying to strengthen the old masonry structures. In this paper， low-cycle reciprocating load experiments were carried out on one unreinforced masonry wall as a control group and three reinforced masonry walls with different height-width ratios. The seismic performance of reinforced masonry walls with different height-width ratios was studied using HFMRPC. Seismic performance indexes such as failure mode， hysteresis curve， and skeleton curve were compared and analyzed for the four walls. The test results show that HFMRPC surface layer has good bonding ability with the masonry wall， and the surface layer can effectively improve the bearing capacity of the wall. After HFMRPC surface reinforcement， the ductility of the wall was significantly enhanced， resulting in a better seismic reinforcement effect. The ductility coefficient is increased by about 199%. After the reinforcement of the HFMRPC surface layer， the energy dissipation capacity of the wall was significantly increased， and the cumulative energy consumption was increased by about 98%. The failure pattern of the wall was influenced by the aspect ratio. When the height-width ratio decreases， the brittle failure of the wall occurs. With a decrease in the height-width ratio， the wall develops towards brittle failure. As the aspect ratio increases， the wall has better ductility. In this paper， the shear and flexural bearing capacity of the wall were calculated and analyzed， and the formula of shear bearing capacity for HFMRPC surface reinforcement was proposed， which can be provided a theoretical basis for practical engineering applications.

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