无筋钢纤维混凝土偏心受压计算方法研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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无筋钢纤维混凝土偏心受压计算方法研究

Research on Calculation Method of Eccentric Compression of Steel Fiber Reinforced Concrete

2020年第8期

钢纤维混凝土；偏压试验；受压区；计算方法

Steel fiber reinforced concrete; Bending test; Compression zone; Calculation method

2020年第8期

10.19761/j.1000-4637.2020.08.052.05

杨跃，谭小兵，朱占国，关永平，冯高飞

中国铁路设计集团有限公司，天津 300143

杨跃，谭小兵，朱占国，关永平，冯高飞

杨跃,谭小兵,朱占国.无筋钢纤维混凝土偏心受压计算方法研究[J].混凝土与水泥制品,2020(8):52-55,70.

YANG Y,TAN X B,ZHU Z G,et al.Research on Calculation Method of Eccentric Compression of Steel Fiber Reinforced Concrete[J].China Concrete and Cement Products,2020(8):52-55,70.

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摘要：基于沈阳轨道交通9号线盾构隧道工程管片的实际受力，进行了无筋钢纤维混凝土偏心受压试验，分析了构件在偏压作用下的断面应力分布、裂缝发展及破坏规律，提出了适合该类构件的计算方法。试验结果表明，无筋钢纤维混凝土构件在相对偏心距大于0.5后承载力急剧下降，即该类构件适用于相对偏心距较小的情况。在构件受力全过程中，混凝土受压区段均处于弹性状态。基于试验结果，提出了修正受压区应力分布状态的无筋钢纤维混凝土偏压正截面计算方法，明确了受压区纤维混凝土强度系数的取值。 Abstract: Guiding by the actual stress of the segment of the shield tunnel project of Shenyang Rail Transit Line 9, several sets of eccentric compression tests of unreinforced steel fiber reinforced concrete were conducted, and section stress distribution and crack development of members under compression and bending were analyzed and a calculation method suitable for this kind of component was put forward. The test results show that the bearing capacity of steel fiber reinforced concrete members without steel bars decreases sharply after the relative eccentricity is greater than 0.5 and this type of members is suitable for situations where the eccentricity is small. During the entire process of the component, the concrete compression section is elastic status. Based on the experimental conclusions, a calculation method for the unstressed steel fiber reinforced concrete biased normal cross-section is put forward, and the value of the fiber reinforced concrete strength coefficient in the compressed area is determined.

英文名 : Research on Calculation Method of Eccentric Compression of Steel Fiber Reinforced Concrete

刊期 : 2020年第8期

关键词 : 钢纤维混凝土；偏压试验；受压区；计算方法

Key words : Steel fiber reinforced concrete; Bending test; Compression zone; Calculation method

刊期 : 2020年第8期

DOI : 10.19761/j.1000-4637.2020.08.052.05

文章编号 :

基金项目 :

作者 : 杨跃，谭小兵，朱占国，关永平，冯高飞

单位 : 中国铁路设计集团有限公司，天津 300143

杨跃，谭小兵，朱占国，关永平，冯高飞

杨跃,谭小兵,朱占国.无筋钢纤维混凝土偏心受压计算方法研究[J].混凝土与水泥制品,2020(8):52-55,70.

YANG Y,TAN X B,ZHU Z G,et al.Research on Calculation Method of Eccentric Compression of Steel Fiber Reinforced Concrete[J].China Concrete and Cement Products,2020(8):52-55,70.

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摘要

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参考文献

引用本文

Abstract: Guiding by the actual stress of the segment of the shield tunnel project of Shenyang Rail Transit Line 9, several sets of eccentric compression tests of unreinforced steel fiber reinforced concrete were conducted, and section stress distribution and crack development of members under compression and bending were analyzed and a calculation method suitable for this kind of component was put forward. The test results show that the bearing capacity of steel fiber reinforced concrete members without steel bars decreases sharply after the relative eccentricity is greater than 0.5 and this type of members is suitable for situations where the eccentricity is small. During the entire process of the component, the concrete compression section is elastic status. Based on the experimental conclusions, a calculation method for the unstressed steel fiber reinforced concrete biased normal cross-section is put forward, and the value of the fiber reinforced concrete strength coefficient in the compressed area is determined.

关键词:

计算方法

the

and

混凝土

concrete

构件

fiber

reinforced

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无筋钢纤维混凝土偏心受压计算方法研究

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