Article(id=1319987112418594871, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319987055371858691, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20210441, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1632412800000, receivedDateStr=2021-09-24, revisedDate=1635696000000, revisedDateStr=2021-11-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1792639051775, onlineDateStr=2026-10-22, pubDate=1645286400000, pubDateStr=2022-02-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792639051775, onlineIssueDateStr=2026-10-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792639051775, creator=13701087609, updateTime=1792639051775, updator=13701087609, issue=Issue{id=1319987055371858691, tenantId=1146029695717560320, journalId=1263187385517883426, year='2022', volume='50', issue='2', pageStart='277', pageEnd='554', issueExtLink='null', onlineDate='null', pubDate='1645286400000', pubDateStr='2022-02-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1792639038174, creator='13701087609', updateTime=1792639254308, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319987961958089069, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319987055371858691, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319987961958089070, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319987055371858691, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=473, endPage=481, ext={EN=ArticleExt(id=1319987112624115768, articleId=1319987112418594871, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Flexural Fatigue Properties of Ultra-High Performance Concrete at -10 ℃, columnId=1263922769897599102, journalTitle=Journal of the Chinese Ceramic Society, columnName=Research Articles, runingTitle=null, highlight=null, articleAbstract=

The fatigue properties of ultra-high performance concrete (UHPC) at 20 ℃ and -10 ℃ were investigated via flexural fatigue tests under different stress levels. The results show that, the degradation of UHPC flexural fatigue performance and the fatigue strength decrease under a cyclic load with the decrease of temperature due to the cold brittleness characteristics of steel fibers at the cracked section. Compared with the test results at 20 ℃, the fatigue strength of UHPC at -10 ℃ is decreased by 15.6%. Although the fatigue strength of the specimens at a low temperature is lower than that of the specimens at normal temperature, their fatigue deformation modulus ratios (En/E0) corresponding to their fatigue strengths are similar, which are 0.48. The residual strength of UHPC specimens undergoing 2 million cycles without flexural fatigue failure is close to the static strength under monotonic loading, at normal temperature or low temperature. Based on the results, a model of predicting the fatigue life of UHPC at 20 ℃ and -10 ℃ was proposed, and the predicted results could be used as reference in the practical application.

, authors=Zhi FANG1, 2, Qimu ZHU1, Shaokun LIU1, Xingyu TAN1, authorsList=Zhi FANG, Qimu ZHU, Shaokun LIU, Xingyu TAN, authorCompany=null, correspAuthors=null, authorNote=

FANG Zhi (1963-), male, Ph.D., Professor. E-mail:

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为了解负温时超高性能混凝土(UHPC)的弯曲疲劳性能,对20 ℃和-10 ℃两种温度下的UHPC进行了不同应力水平下的弯曲疲劳试验。结果表明:随着温度的降低,由于试件开裂截面钢纤维的冷脆特征,使得循环荷载作用下UHPC弯曲疲劳性能的退化明显加剧,疲劳强度也明显降低。与20 ℃的结果相比发现,-10 ℃ UHPC的疲劳强度降低了15.6%;虽然低温试件的疲劳强度低于常温试件,但两类试件与各自疲劳强度对应的疲劳变形模量比En/E0相近,均在0.48左右;无论是常温试件还是低温试件,经历200万次循环而未发生弯曲疲劳破坏的UHPC试件,其疲劳后的剩余强度均与单调加载时的静力强度接近。基于试验结果,提出了20 ℃和-10 ℃两种温度下UHPC的疲劳寿命方程。

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方志(1963—),男,博士,教授。

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-10 ℃下超高性能混凝土的弯曲疲劳性能
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方志 1, 2 , 朱启木 1 , 刘绍琨 1 , 谭星宇 1
硅酸盐学报 | 研究论文 2022,50(2): 473-481
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硅酸盐学报 |研究论文 2022 , 50 (2) : 473 -481
-10 ℃下超高性能混凝土的弯曲疲劳性能
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方志1, 2 , 朱启木1, 刘绍琨1, 谭星宇1
作者信息
  • 1.湖南大学土木工程学院,长沙 410082
  • 2.湖南大学风工程与桥梁工程湖南省重点实验室,长沙 410082
作者简介:

方志(1963—),男,博士,教授。

Flexural Fatigue Properties of Ultra-High Performance Concrete at -10 ℃
Zhi FANG1, 2 , Qimu ZHU1, Shaokun LIU1, Xingyu TAN1
Affiliations
  • 1.College of Civil Engineering, Hunan University, Changsha 410082, China
  • 2.Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, Changsha 410082, China
  • FANG Zhi (1963-), male, Ph.D., Professor. E-mail:

出版时间: 2022-02-20 doi: 10.14062/j.issn.0454-5648.20210441
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为了解负温时超高性能混凝土(UHPC)的弯曲疲劳性能,对20 ℃和-10 ℃两种温度下的UHPC进行了不同应力水平下的弯曲疲劳试验。结果表明:随着温度的降低,由于试件开裂截面钢纤维的冷脆特征,使得循环荷载作用下UHPC弯曲疲劳性能的退化明显加剧,疲劳强度也明显降低。与20 ℃的结果相比发现,-10 ℃ UHPC的疲劳强度降低了15.6%;虽然低温试件的疲劳强度低于常温试件,但两类试件与各自疲劳强度对应的疲劳变形模量比En/E0相近,均在0.48左右;无论是常温试件还是低温试件,经历200万次循环而未发生弯曲疲劳破坏的UHPC试件,其疲劳后的剩余强度均与单调加载时的静力强度接近。基于试验结果,提出了20 ℃和-10 ℃两种温度下UHPC的疲劳寿命方程。

超高性能混凝土  /  低温环境  /  疲劳寿命  /  疲劳强度  /  疲劳变形模量

The fatigue properties of ultra-high performance concrete (UHPC) at 20 ℃ and -10 ℃ were investigated via flexural fatigue tests under different stress levels. The results show that, the degradation of UHPC flexural fatigue performance and the fatigue strength decrease under a cyclic load with the decrease of temperature due to the cold brittleness characteristics of steel fibers at the cracked section. Compared with the test results at 20 ℃, the fatigue strength of UHPC at -10 ℃ is decreased by 15.6%. Although the fatigue strength of the specimens at a low temperature is lower than that of the specimens at normal temperature, their fatigue deformation modulus ratios (En/E0) corresponding to their fatigue strengths are similar, which are 0.48. The residual strength of UHPC specimens undergoing 2 million cycles without flexural fatigue failure is close to the static strength under monotonic loading, at normal temperature or low temperature. Based on the results, a model of predicting the fatigue life of UHPC at 20 ℃ and -10 ℃ was proposed, and the predicted results could be used as reference in the practical application.

ultra-high performance concrete  /  low temperature  /  fatigue life  /  fatigue strength  /  fatigue deformation modulus
方志, 朱启木, 刘绍琨, 谭星宇. -10 ℃下超高性能混凝土的弯曲疲劳性能. 硅酸盐学报, 2022 , 50 (2) : 473 -481 . DOI: 10.14062/j.issn.0454-5648.20210441
Zhi FANG, Qimu ZHU, Shaokun LIU, Xingyu TAN. Flexural Fatigue Properties of Ultra-High Performance Concrete at -10 ℃[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (2) : 473 -481 . DOI: 10.14062/j.issn.0454-5648.20210441
  • 国家自然科学基金项目(51938012)
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2022年第50卷第2期
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doi: 10.14062/j.issn.0454-5648.20210441
  • 接收时间:2021-09-24
  • 首发时间:2026-10-22
  • 出版时间:2022-02-20
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  • 收稿日期:2021-09-24
  • 修回日期:2021-11-01
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国家自然科学基金项目(51938012)
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    1.湖南大学土木工程学院,长沙 410082
    2.湖南大学风工程与桥梁工程湖南省重点实验室,长沙 410082
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2种不同金属材料的力学参数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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