| 高延性混凝土面层加固受弯无筋砌体墙抗震性能试验研究 |
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| 引用本文： | 邓明科,董志芳,樊鑫淼,梁兴文.高延性混凝土面层加固受弯无筋砌体墙抗震性能试验研究[J].工程力学,2020,37(3):46-55. |
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| 作者姓名： | 邓明科 董志芳 樊鑫淼 梁兴文 |
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| 作者单位： | 1.西安建筑科技大学土木工程学院, 陕西, 西安 710055; |
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| 基金项目： | 国家自然科学基金项目(51578445)。 |
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| 摘 要： | 为研究高延性混凝土（HDC）加固无筋受弯砌体墙的抗震性能，设计了1片未加固砖墙、1片钢筋网水泥砂浆面层加固砖墙和3片HDC面层加固砖墙进行拟静力试验，研究其破坏机理、滞回特性和耗能能力。结果表明:1）HDC面层和砖墙具有良好的粘结性能，可有效抑制墙体的开裂和破坏，能改善墙体的脆性破坏特征；2）HDC面层对砖墙形成良好的约束作用，提高了墙体的抗震承载力；3）HDC面层可显著提高砖墙的变形和耐损伤能力，减小或免去震后修复费用，其加固效果优于传统的钢筋网水泥砂浆面层。根据统计分析，该文给出了HDC面层加固墙体基于位移角的易损性曲线。
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| 关 键 词： | 无筋砌体 受弯砌体 高延性混凝土(HDC) 抗震加固 性能指标 |
| 收稿时间： | 2018-06-05 |
EXPERIMENTAL INVESTIGATION ON THE SEISMIC BEHAVIOR OF FLEXURAL UNREINFORCED MASONRY WALLS STRENGTHENED BY HIGH DUCTILITY CONCRETE OVERLAYS |
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| DENG Ming-ke,DONG Zhi-fang,FAN Xin-miao,LIANG Xing-wen.EXPERIMENTAL INVESTIGATION ON THE SEISMIC BEHAVIOR OF FLEXURAL UNREINFORCED MASONRY WALLS STRENGTHENED BY HIGH DUCTILITY CONCRETE OVERLAYS[J].Engineering Mechanics,2020,37(3):46-55. |
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| Authors: | DENG Ming-ke DONG Zhi-fang FAN Xin-miao LIANG Xing-wen |
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| Affiliation: | 1.School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China;2.China Machinery International Engineering Design&Research Institute Co., Ltd., Changsha, Hunan 410007, China |
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| Abstract: | To study the seismic behavior of flexural unreinforced masonry walls strengthened with High Ductility Concrete(HDC)overlays,an unreinforced brick wall,a wall retrofitted with steel-meshed cement mortar and three walls strengthened with HDC overlays were designed.Quasi-static tests were performed to study the failure mechanism,hysteretic characteristics and energy dissipation capacity of the brick walls.The results shows that:the bonding properties between the HDC overlays and brick walls are excellent,and the HDC overlay is effective to limit the crack and damage and avoid brittle failure;the HDC overlay has good restraining effect on the brick walls and improves the seismic performance of the brick walls;the HDC overlay can significantly improve the damage tolerance and deformability and reduce or avoid the repair expenses after earthquakes.Its effectiveness is better than a traditional steel-meshed.According to the statistical analysis,this paper gives the fragility curve based on the drift of walls strengthened by HDC layers. |
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| Keywords: | unreinforced masonry flexural masonry high ductility concrete(HDC) seismic reinforcement performance analysis |
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