| 桩身混凝土受拉性能试验研究 |
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| 引用本文： | 陈艺征,袁聚云,袁勇.桩身混凝土受拉性能试验研究[J].岩土工程学报,2010(Z2). |
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| 作者姓名： | 陈艺征 袁聚云 袁勇 |
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| 作者单位： | 同济大学; |
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| 摘 要： | 本试验研究扩底抗拔桩的桩身力学性能。在忽略桩侧壁摩阻力的情况下,采用两端扩大断面的钢筋混凝土试件来近似模拟抗拔桩体的受力,该缩尺试件设置了三种配筋率。混凝土材料为C30普通混凝土,钢筋为Q235变形钢筋。试验重点测试了配筋率对抗拔桩的开裂荷载、裂缝扩展和抗拉强度的影响关系。创新之处在于分析了钢筋混凝土构件在不同配筋率下,荷载与裂缝宽度之间普遍存在的关系,对于揭示抗拔桩开裂机理、裂缝位置的定量预测和控制桩身的裂缝宽度有较为重要的意义。
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| 关 键 词： | 钢筋混凝土 拉伸 裂缝宽度 配筋率 开裂荷载 |
Experimental on tensile performance of pile concrete |
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| CHEN Yi-zheng,YUAN Ju-yun,YUAN Yong.Experimental on tensile performance of pile concrete[J].Chinese Journal of Geotechnical Engineering,2010(Z2). |
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| Authors: | CHEN Yi-zheng YUAN Ju-yun YUAN Yong |
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| Affiliation: | CHEN Yi-zheng,YUAN Ju-yun,YUAN Yong (Tongji University,Shanghai 200092,China) |
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| Abstract: | Study on the tensile performance of pedestal pile is carried out in this paper.Without considering the side friction,mechanical behavior of tensile piles is simulated by the reinforced-concrete specimen with enlarges ends.There are three types of reinforcement ratios.The materials of concrete and steel bars are C30 and Q235 respectively.The tests mainly show the relationship among cracking load,width of cracks and tensile strength.The relationship between load and maximal width of cracks in different reinfo... |
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| Keywords: | reinforced-concrete tension crack width reinforcement ratio cracking load |
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