| 引用本文: | 魏春明,尹景耀,赵星海,赵强,陈建华.高强混凝土框架结构中节点抗震性能[J].哈尔滨工业大学学报,2015,47(10):124.DOI:10.11918/j.issn.0367-6234.2015.10.024 |
| WEI Chunming,YIN Jingyao,ZHAO Xinghai,ZHAO Qiang,CHEN Jianhua.Seismic behavior of interior joints of high-strength concrete frame structure[J].Journal of Harbin Institute of Technology,2015,47(10):124.DOI:10.11918/j.issn.0367-6234.2015.10.024 |
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| 摘要: |
| 为研究高强混凝土框架结构中节点的抗震性能,对10根留有施工缝的高强混凝土框架结构中节点进行了低周反复抗震性能试验. 研究了轴压比、节点核心区混凝土的强度等级、柱中混凝土在梁中的延伸长度等对梁柱中节点抗震性能的影响,对构件的破坏特征、承载能力、延性性能、滞回曲线进行了对比分析.研究结果表明：所有试验构件均为梁端受弯破坏；柱中混凝土在梁中的延伸长度对滞回曲线的形态、屈服荷载和最大荷载都没有显著影响,但是对节点的延性性能影响比较大.根据试验结果和分析,并考虑到实际施工因素,取用1.5h为柱中高强混凝土延伸到梁中的最佳延伸长度. |
| 关键词: 高强混凝土 中节点 抗震性能 |
| DOI：10.11918/j.issn.0367-6234.2015.10.024 |
| 分类号:TU375.4 |
| 基金项目:国家自然科学基金 (51478094)；吉林省教育厅"十二五"科学技术研究资助(2013109). |
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| Seismic behavior of interior joints of high-strength concrete frame structure |
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WEI Chunming1, YIN Jingyao1, ZHAO Xinghai2, ZHAO Qiang1, CHEN Jianhua1
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(1. School of Architectural and Civil Engineering , Northeast Dianli University, 132012 Jilin, Jilin, China; 2. School of Energy and Power Engineering , Northeast Dianli University, 132012 Jilin, Jilin, China)
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| Abstract: |
| To study the seismic behavior of interior joints of high-strength concrete frame structure, 10 interior joints with construction joints of high-strength concrete frame structure are carried out based on the low-cycle loadings test. The influences of the axial compression ratio, concrete strength grade of core area of interior joints, and the length of high-strength concrete in columns and joints extends to beams are studied. Failure characteristics, bearing capacity, displacement ductility and hysteretic curves are also analyzed deeply. Test results show that all of the interior joints are damaged at the end of beam by bending. The lengths of high-strength concrete in columns and joints extension to beams have little effect on yield load, peak load and hysteretic curves as well. While the length of high-strength concrete in columns and joints extensions to beams have significant effect on displacement ductility. On the basis of the test results analysis and construction factors, it is shown that 1.5his the optimal length of high-strength concrete in columns and joints extension to beams. |
| Key words: high-strength concrete interior joints seismic behavior |
