| 级配钢纤维活性粉末混凝土的动态拉伸性能的试验研究 |
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| 引用本文： | 黄政宇,秦联伟,肖岩,陈柏生.级配钢纤维活性粉末混凝土的动态拉伸性能的试验研究[J].铁道科学与工程学报,2007,4(4):34-40. |
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| 作者姓名： | 黄政宇 秦联伟 肖岩 陈柏生 |
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| 作者单位： | 1. 湖南大学,土木工程学院,湖南,长沙,410082
2. 湖南大学,土木工程学院,湖南,长沙,410082;南加州大学,土木系,美国,洛杉矶,CA90089 |
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| 基金项目： | 教育部重大科研基金
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湖南大学工程结构综合防护研究所(CIPRES)面向21世纪教育振兴行动计划（985计划） |
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| 摘 要： | 采用分离式Hopkinson压杆(SHPB)对直径为70 mm的圆柱体试件的动态拉伸性能进行研究,得到了不同应变率下的混凝土劈裂拉伸强度和拉伸应力-时间曲线,并与静态劈裂拉伸强度进行了对比。根据试验结果,讨论了含不同种类钢纤维的活性粉末混凝土的动态拉伸性能,以及3种钢纤维级配下的钢纤维活性粉末混凝土的动态拉伸性能;总结了级配钢纤维活性粉末混凝土的应变率效应,以及影响钢纤维混凝土动态拉伸性能的因素。
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| 关 键 词： | SHPB 钢纤维 级配 高应变率 拉伸 |
| 文章编号： | 1672-7029（2007）04-0034-07 |
| 修稿时间： | 2007-04-20 |
Experimental investigation on the dynamic tensile behavior of graded steel-fiber RPC |
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| HUANG Zheng-yu,Qin Lian-wei,Xiao Yan,Chen Bo-sheng.Experimental investigation on the dynamic tensile behavior of graded steel-fiber RPC[J].Journal of Railway Science and Engineering,2007,4(4):34-40. |
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| Authors: | HUANG Zheng-yu Qin Lian-wei Xiao Yan Chen Bo-sheng |
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| Institution: | College of Civil Engineering, Hunan University, Changsha 410082, China; College of Engineering, University of Southem Califomia, Los Angeles CA90089, USA |
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| Abstract: | Dynamic tensile behavior of the 70 mm diameter cylinder specimens was studied by using a split Hopkinson pressure bar(SHPB).Dynamic splitting tensile strength and the curves of tensile strength-time curve under different strain rates were obtained.Dynamic splitting tensile strength were compared with static splitting tensile strength.From the test results,dynamic tensile behavior of reactive powder concrete(RPC) containing different kinds of steel fibers was discussed.Dynamic tensile behavior of RPC containing all three kinds of steel fiber which was graded was also discussed.At last,the strain rate effect of graded steel-fiber RPC and the factors that affect the dynamic tensile behavior of steel-fiber concrete are summarized. |
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| Keywords: | SHPB steel fiber grade high strain rates tensile |
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