| 配筋率对钢筋混凝土框架梁极限承载力的影响——拱效应试验研究 |
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| 引用本文： | 陈明辉,宋晓胜,苏幼坡.配筋率对钢筋混凝土框架梁极限承载力的影响——拱效应试验研究[J].自然灾害学报,2010,19(1). |
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| 作者姓名： | 陈明辉 宋晓胜 苏幼坡 |
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| 作者单位： | 陈明辉(唐山工业职业技术学院,河北,唐山,063000);宋晓胜,苏幼坡(河北理工大学,河北,唐山,063009) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 通过对9根不同纵筋配筋率的钢筋混凝土试验梁进行加载试验,研究了纵筋配筋率对钢筋混凝土框架梁拱效应的影响以及拱效应条件下钢筋混凝土框架梁的极限承载力.试验结果和理论分析表明,钢筋混凝土框架梁中的拱效应可以使构件的极限承载力提高1倍左右;纵筋配筋率越低,极限承载力提高的幅度越显著.为提高拱效应的作用,宜将钢筋混凝土框架梁的纵筋配筋率控制在1.5%以内.
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| 关 键 词： | 配筋率 钢筋混凝土框架梁 拱效应 |
Influence of reinforcement ratio on ultimate bearing capacity of reinforced concrete frame beams:test study on arch action |
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| CHEN Ming-hui,SONG Xiao-sheng,SU You-po.Influence of reinforcement ratio on ultimate bearing capacity of reinforced concrete frame beams:test study on arch action[J].Journal of Natural Disasters,2010,19(1). |
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| Authors: | CHEN Ming-hui SONG Xiao-sheng SU You-po |
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| Institution: | CHEN Ming-hui1,SONG Xiao-sheng2,SU You-po2(1.Tangshan Industrial Vocational Technical College,Tangshan 063000,China,2.Hebei Polytechnic University,Tangshan 063009,China) |
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| Abstract: | Nine specimens with different longitudinal reinforcement ratio were designed and fixed in the support with large stiffness and loaded in the midspan.Through the experiment,the influence of reinforcement ratio on the bearing capacity of reinforced concrete frame beams under the condition of arch action and the influence of arch action on their limit load were investigated.Experimental results and theoretical analysis indicate that the ultimate bearing capacity of reinforced concrete frame beams can be increa... |
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| Keywords: | reinforcement ratio reinforced concrete frame beams arch action |
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