| 引用本文: | 池斌,王凤来,张志铭,杨旭.配筋砌块砌体剪力墙受剪承载力预测方法[J].哈尔滨工业大学学报,2018,50(12):156.DOI:10.11918/j.issn.0367-6234.201805144 |
| CHI Bin,WANG Fenglai,ZHANG Zhiming,YANG Xu.Shear capacity prediction of reinforced concrete block masonry walls[J].Journal of Harbin Institute of Technology,2018,50(12):156.DOI:10.11918/j.issn.0367-6234.201805144 |
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| 配筋砌块砌体剪力墙受剪承载力预测方法 |
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池斌1,王凤来1,2,3,张志铭1,杨旭1
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(1.哈尔滨工业大学 土木工程学院,哈尔滨150090;2.结构工程灾变与控制教育部重点实验室(哈尔滨工业大学), 哈尔滨 150090;3.土木工程智能防灾减灾工业和信息化部重点实验室(哈尔滨工业大学),哈尔滨150090)
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| 摘要: |
| 为建立配筋砌块砌体剪力墙受剪破坏的力学模型和受剪承载力计算方法,根据配筋砌块砌体剪力墙受剪破坏试验特征,考虑灌芯砌块砌体材料受压过程的软化效应,提出了基于软化拉压杆模型的配筋砌块砌体剪力墙受剪承载力预测方法.通过国内外54片配筋砌块砌体剪力墙受剪试验数据对软化拉压杆模型合理性进行验证,并将其预测结果与国内外相关建议公式计算值进行对比分析.研究结果表明:软化拉压杆模型计算得到的配筋砌块砌体剪力墙受剪承载力与试验结果吻合较好,其预测值相较国内外相关建议公式计算值更接近于试验值,同时变异系数较小；而且此模型具有明确的力学模型,能够较好反映剪跨比不大于2.0的配筋砌块砌体剪力墙的剪切传力机理. |
| 关键词: 配筋砌块砌体 剪力墙 拉压杆模型 受剪承载力 软化系数 |
| DOI：10.11918/j.issn.0367-6234.201805144 |
| 分类号:TU365 |
| 文献标识码:A |
| 基金项目:国家重点研发计划(2016YFC0701502) |
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| Shear capacity prediction of reinforced concrete block masonry walls |
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CHI Bin1,WANG Fenglai1,2,3,ZHANG Zhiming1,YANG Xu1
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(1.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;2.Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology),Ministry of Education,Harbin 150090, China;3.Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters (Harbin Institute of Technology), Ministry of Industry and Information Technology, Harbin 150090, China)
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| Abstract: |
| To establish a mechanical model and shear bearing capacity calculation method for reinforced concrete masonry walls, a prediction method based on the analysis of the shear failure test characteristics of reinforced concrete masonry walls was proposed,in which the softened strut-and-tie model was adopted and the softening effect of concrete block masonry under compression was considered. The rationality of softened strut-and-tie model was verified by the 54 existing tested reinforced concrete block masonry walls failed in shear, and the prediction results were compared with those of relevant formulas at home and abroad. The research results show that good agreement is achieved between the prediction results and tested results, and the prediction results are closer to the tested results than those of relevant formula with a lower coefficient of variation value.Furthermore, this model has a clear and definite mechanical model and it can reasonably reveal the shear failure mechanism of reinforced concrete block masonry walls with span-to-depth ratios no greater than 2.0. |
| Key words: reinforced concrete block masonry shear wall strut-and-tie model shear capacity softened coefficient |
