| 混凝土劈裂抗拉强度与轴心抗拉强度关系研究 |
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| 引用本文： | 丁晓唐,袁存,郑艳.混凝土劈裂抗拉强度与轴心抗拉强度关系研究[J].河北工程大学学报,2016,33(1):24-27,34. |
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| 作者姓名： | 丁晓唐 袁存 郑艳 |
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| 作者单位： | 河海大学 土木与交通学院, 江苏 南京 210098;河海大学 土木与交通学院, 江苏 南京 210098;河海大学 土木与交通学院, 江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金项目资助(项目编号:51279052) |
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| 摘 要： | 国内外学者对混凝土劈拉与轴拉强度的强度关系的研究结论并不一致,为更好地研究两者强度关系,基于黏聚裂纹模型理论,进行了的圆柱体试件尺寸为150 mm×300 mm,垫条宽度变化范围为5~20 mm共8个级别的劈拉试验和尺寸为100 mm×100 mm×550 mm的棱柱体轴拉试验。建立了劈拉强度和直拉强度关系比fts/ft与圆柱体试件直径和特征长度比D/Lch的回归方程,并给出了公式中参数的取值,对大体积混凝土结构的设计及检测有一定的参考价值。
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| 关 键 词： | 混凝土 劈拉强度 轴拉强度 垫条宽度 黏聚裂纹模型 |
| 收稿时间： | 2015/10/12 0:00:00 |
Study on relationship between concrete splitting tensile strength and axial tensile strength |
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| Authors: | DING Xiao-tang YUAN Cun and ZHENG Yan |
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| Affiliation: | College of Civil and Transportation Engineering, Hohai University, Jiangsu Nanjing 210098, China;College of Civil and Transportation Engineering, Hohai University, Jiangsu Nanjing 210098, China;College of Civil and Transportation Engineering, Hohai University, Jiangsu Nanjing 210098, China |
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| Abstract: | Conclusions of researches on the relationship between concrete splitting tensile strength and axial tensile strength are inconsistent. To study the relationship, splitting tensile test with loading strip width ranging from 5mm-20mm and axial tensile test were conducted. The size of splitting tensile test cylindrical specimens is 150mm×300mm and size of the axial tensile test specimens is 100mm×100mm×550mm. Based on cohesive crack model of fracture mechanics theory, this paper builds a regression equation between fts/ft and D/Lch. The parameter''s values of the formula are also given. It can be proved that the formula is acceptable and can be applied in design and detection of massive concrete structures. |
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| Keywords: | concrete splitting tensile strength axial tensile strength strip width cohesive crack model |
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