[1]邓明科,刘海勃,秦 萌,等.高延性纤维混凝土抗压韧性试验研究[J].西安建筑科技大学学报:自然版,2015,47(05):660-665,677.[doi:DOI:10.15986/j.1006-7930.2015.05.009]
 DENG Mingke,LIU Haibo,QIN Meng,et al.Experimental research on compressive toughness ofthe high ductile fiber reinforced concrete[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(05):660-665,677.[doi:DOI:10.15986/j.1006-7930.2015.05.009]
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高延性纤维混凝土抗压韧性试验研究()
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西安建筑科技大学学报:自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年05期
页码:
660-665,677
栏目:
出版日期:
2015-10-29

文章信息/Info

Title:
Experimental research on compressive toughness of
the high ductile fiber reinforced concrete
文章编号:
1006-7930(2015)05-0660-06
作者:
邓明科1刘海勃1秦 萌12梁兴文1
(1.西安建筑科技大学土木工程学院,陕西 西安 710055;2.成都天华西南建筑设计有限公司,四川 成都 610016)
Author(s):
DENG Mingke1 LIU Haibo1 QIN Meng12 LIANG Xingwen1
(1. School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China;
2. Chengdu Tianhua (Southwest Region) Architecture Planning & Engineering Ltd., Chengdu 610016, China)
关键词:
高延性纤维混凝土单轴受压等效抗压韧性指数抗压韧性变形能力
Keywords:
high ductile fiber reinforced concrete uniaxial compression equivalent compressive toughness index compressivetoughness deformation capacity
分类号:
TU528.572
DOI:
DOI:10.15986/j.1006-7930.2015.05.009
文献标志码:
A
摘要:
通过9组不同配合比HDC试件的单轴受压试验,研究其抗压韧性的评价指标,并对HDC的变形能力进行等效分析,得
到以下结论:(1) HDC单轴受压的峰值应变可达砂浆基体的2.31~3.64倍;(2) 等效抗压韧性指数反映了试件单轴受压时单位
体积的变形能,可作为HDC的抗压韧性评价指标;(3) HDC纤维桥联作用对等效抗压韧性指数和受压变形能力的提高可达砂
浆基体的3倍以上;(4) 根据试验结果建立了HDC等效抗压韧性指数0.85
cu W 与纤维掺量 之间的关系;(5) HDC基体内部的纤
维桥联作用,相当于在试件内配置了大量约束箍筋,使试件的抗压韧性和受压变形能力明显提高.
Abstract:
The compressive toughness evaluation index of HDC was studied in this paper based on the uniaxial compression test of 9
groups of HDC specimens with different mixture ratios. The equivalent analysis of its deformation capacity was also conducted and the
following conclusions were obtained: (1) The peak strain of HDC under uniaxial compression is up to 2.31~3.64 times as large as that of
the mortar matrix; (2) Equivalent compressive toughness index reflects the deformation energy per unit volume of specimens under uniaxial
compression, and it can be used as the compressive toughness evaluation indicator of HDC; (3) The fiber bridging action of HDC
improves the equivalent compressive toughness index and compressive deformation up to more than 3 times as large as the mortar matrix
does; (4) According to the test results the relationship between equivalent compressive toughness index and volume ratio of PVA
fiber is established; (5) The fiber bridging action of HDC, which is equivalent to configuring with a large number of constraints stirrups
in the specimens, significantly improved the compressive toughness and compressive deformation of specimens.

参考文献/References:

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相似文献/References:

[1]邓明科,潘姣姣,秦 萌,等.高延性混凝土单轴受压本构模型研究[J].西安建筑科技大学学报:自然版,2016,48(06):826.[doi:10.15986/j.1006-7930.2016.06.009]
 DENG Mingke,PAN Jiaojiao,QIN Meng,et al.Research on the constitutive relation of high ductile fiber reinforced concrete under uniaxial compression[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2016,48(05):826.[doi:10.15986/j.1006-7930.2016.06.009]

备注/Memo

备注/Memo:
收稿日期:2015-05-28 修改稿日期:2015-10-07
基金项目:国家自然科学基金资助项目(51278402),陕西省自然科学基金资助项目(2013JM7013)
通讯作者:邓明科(1979-),男,副教授,工学博士,从事高性能土木工程材料与新型结构研究.E-mail: dengmingke@126.com
更新日期/Last Update: 2015-12-14