工程力学 ›› 2019, Vol. 36 ›› Issue (7): 116-125.doi: 10.6052/j.issn.1000-4750.2018.03.0185

• 土木工程学科 • 上一篇    下一篇

高延性混凝土加固震损砌体结构振动台试验研究

邓明科, 董志芳, 杨铄, 王露, 周铁钢   

  1. 西安建筑科技大学土木工程学院, 陕西, 西安 710055
  • 收稿日期:2018-03-30 修回日期:2018-08-19 出版日期:2019-07-06 发布日期:2019-07-06
  • 通讯作者: 邓明科(1979-),男,四川南充人,教授,博士,主要从事高性能土木工程材料与新型结构研究(E-mail:dengmingke@126.com). E-mail:dengmingke@126.com
  • 作者简介:董志芳(1991-),男,河南商丘人,博士生,从事砌体结构及抗震加固研究(E-mail:dongzhifang2017@163.com);杨铄(1991-),男,陕西西安人,博士生,从事砌体结构及抗震加固研究(E-mail:15829585360@163.com);王露(1991-),男,河南郑州人,硕士生,从事建筑抗震研究(E-mail:lu-wang9@hnaholding.com);周铁钢(1970-),男,陕西人,教授,博士,从事村镇建筑抗震与防灾减灾研究工作(E-mail:zhoutiegang@126.com).
  • 基金资助:
    国家自然科学基金项目(51578445);陕西省教育厅重点实验室项目(15JS048)

Shaking table test on damaged masonry structure reinforced with high ductile concrete layer

DENG Ming-ke, DONG Zhi-fang, YANG Shuo, WANG Lu, ZHOU Tie-gang   

  1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China
  • Received:2018-03-30 Revised:2018-08-19 Online:2019-07-06 Published:2019-07-06

摘要: 为研究高延性混凝土(HDC)面层加固震损砌体结构的抗震性能,该文对一栋缩尺比为1∶2的两层村镇砖砌体房屋模型依次在未加固、采用钢筋网水泥砂浆和高延性混凝土加固三种情况下进行振动台试验,分析了HDC加固震损砌体结构的动力特性、加速度反应、位移反应、扭转效应和破坏形态。试验结果表明:采用HDC面层加固法可以显著提高震损砌体结构的耐损伤能力、变形能力和整体刚度,延缓结构刚度退化,有效传递水平剪力;采用HDC面层加固能有效抵抗结构因质量中心和刚度中心不重合引起的扭转效应;采用HDC面层加固震损砌体结构,其抗震性能明显优于钢筋网水泥砂浆面层加固,可大幅减轻砌体结构在8度及以上地震动下的损伤。

关键词: 高延性混凝土(HDC), 震损砌体, 振动台试验, 加固, 抗震性能

Abstract: To study the seismic performance of damaged masonry structures reinforced with High Ductility Concrete (HDC), a two-storey masonry store model with a scale ratio of 1/2 was tested on shaking table for three cases:unreinforced, reinforced using steel-meshed cement mortar and reinforced using HDC. The dynamic characteristics, acceleration response, displacement response, structural torsion and failure pattern of HDC reinforced masonry structure were analyzed through comparisons of the three cases. The experimental results show that the HDC surface-layer reinforcement can significantly improve the damage tolerance, deformation ability and overall stiffness of masonry structure, delay the declination of structural stiffness and effectively transfer the horizontal shear force. The HDC surface-layer reinforcement can effectively resist structural torsion caused by the dislocation of mass center and stiffness center. Reinforced with HDC surface layer, the seismic performance was obviously better than that reinforced using steel-meshed cement mortar. The HDC surface layer can greatly reduce the damage degree of masonry structures subjected to the earthquake with intensity of 8.

Key words: high ductility concrete, damaged masonry, shaking table test, reinforcement, seismic performance

中图分类号: 

  • TU317.1
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