Article(id=1223202686024143268, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20231341, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1691942400000, receivedDateStr=2023-08-14, revisedDate=1694448000000, revisedDateStr=2023-09-12, acceptedDate=null, acceptedDateStr=null, onlineDate=1769563846354, onlineDateStr=2026-01-28, pubDate=1703433600000, pubDateStr=2023-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769563846354, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769563846354, creator=13701087609, updateTime=1769563846354, updator=13701087609, issue=Issue{id=1223202678788965355, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='12', pageStart='1', pageEnd='228', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769563844630, creator=13701087609, updateTime=1769563913308, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223202966899901286, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223202966899901287, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223202678788965355, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=125, endPage=128, ext={EN=ArticleExt(id=1223202686363881912, articleId=1223202686024143268, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Research on Coarsening Effect of Local Scour Pit Bottom on Bridge Piers Under Clear Water Conditions, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

On the non-uniform sand river bed, the armor layer at the bottom of the bridge pier local scour pit will affect the maximum local scour depth of the bridge pier. Through a flume model experiment, the sediment gradation, relative coarseness, and non-uniformity of the armor layer at the bottom of the local scour pit on the bridge pier were studied. The results indicate that the median particle size of the sediment in the armor layer at the bottom of the local scour pit on the bridge pier increases with the increase of the local scour depth on the bridge pier, and its relative coarsening degree increases with the increase of the Froude number, while the degree of non-uniformity decreases with the increase of the Froude number. A formula for calculating sediment particle grading in the armor layer at the bottom of the local scour pit on the bridge pier has been proposed. The applicability and reliability of the proposed formula is verifies by the measured data.

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在非均匀沙河床上,桥墩局部冲刷坑底部粗化覆盖层会影响到桥墩的最大局部冲刷深度。通过水槽试验研究分析了单层非均匀沙河床上桥墩局部冲刷坑底部粗化覆盖层的级配、相对粗化度和不均匀程度。结果表明,粗化覆盖层中泥沙的中值粒径随桥墩局部冲刷深度的增加而增加,其相对粗化度随来流弗劳德数的增加而增加,而不均匀程度则随来流弗劳德数的增加而减小。并在此基础上提出了桥墩局部冲刷坑底部粗化覆盖层泥沙的级配计算公式,并利用实测资料验证了该公式具有良好的适用性和可靠性。

, correspAuthors=null, authorNote=null, correspAuthorsNote=
吴龙华(1974-),男,副教授、硕导,研究方向为工程水力学,E-mail:
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武煜伦(1999-),男,硕士研究生,研究方向为工程水力学,E-mail:

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武煜伦(1999-),男,硕士研究生,研究方向为工程水力学,E-mail:

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武煜伦(1999-),男,硕士研究生,研究方向为工程水力学,E-mail:

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清水条件下桥墩局部冲刷坑底部粗化效应研究
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武煜伦 , 吴龙华 , 杨校礼 , 方陈卓
水电能源科学 | 水利水电工程 2023,41(12): 125-128
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水电能源科学 | 水利水电工程 2023, 41(12): 125-128
清水条件下桥墩局部冲刷坑底部粗化效应研究
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武煜伦 , 吴龙华 , 杨校礼, 方陈卓
作者信息
  • 河海大学水利水电学院,江苏 南京 210098
  • 武煜伦(1999-),男,硕士研究生,研究方向为工程水力学,E-mail:

通讯作者:

吴龙华(1974-),男,副教授、硕导,研究方向为工程水力学,E-mail:
Research on Coarsening Effect of Local Scour Pit Bottom on Bridge Piers Under Clear Water Conditions
Yu-lun WU , Long-hua WU , Xiao-li YANG, Chen-zhuo FANG
Affiliations
  • College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
出版时间: 2023-12-25 doi: 10.20040/j.cnki.1000-7709.2023.20231341
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在非均匀沙河床上,桥墩局部冲刷坑底部粗化覆盖层会影响到桥墩的最大局部冲刷深度。通过水槽试验研究分析了单层非均匀沙河床上桥墩局部冲刷坑底部粗化覆盖层的级配、相对粗化度和不均匀程度。结果表明,粗化覆盖层中泥沙的中值粒径随桥墩局部冲刷深度的增加而增加,其相对粗化度随来流弗劳德数的增加而增加,而不均匀程度则随来流弗劳德数的增加而减小。并在此基础上提出了桥墩局部冲刷坑底部粗化覆盖层泥沙的级配计算公式,并利用实测资料验证了该公式具有良好的适用性和可靠性。

桥墩  /  最大局部冲刷深度  /  粗化覆盖层  /  泥沙颗粒级配  /  相对粗化度  /  不均匀程度

On the non-uniform sand river bed, the armor layer at the bottom of the bridge pier local scour pit will affect the maximum local scour depth of the bridge pier. Through a flume model experiment, the sediment gradation, relative coarseness, and non-uniformity of the armor layer at the bottom of the local scour pit on the bridge pier were studied. The results indicate that the median particle size of the sediment in the armor layer at the bottom of the local scour pit on the bridge pier increases with the increase of the local scour depth on the bridge pier, and its relative coarsening degree increases with the increase of the Froude number, while the degree of non-uniformity decreases with the increase of the Froude number. A formula for calculating sediment particle grading in the armor layer at the bottom of the local scour pit on the bridge pier has been proposed. The applicability and reliability of the proposed formula is verifies by the measured data.

bridge pier  /  maximum local scour depth  /  armor layer  /  sediment particle grading  /  relative coarseness  /  non-uniformity
武煜伦, 吴龙华, 杨校礼, 方陈卓. 清水条件下桥墩局部冲刷坑底部粗化效应研究. 水电能源科学, 2023 , 41 (12) : 125 -128 . DOI: 10.20040/j.cnki.1000-7709.2023.20231341
Yu-lun WU, Long-hua WU, Xiao-li YANG, Chen-zhuo FANG. Research on Coarsening Effect of Local Scour Pit Bottom on Bridge Piers Under Clear Water Conditions[J]. Water Resources and Power, 2023 , 41 (12) : 125 -128 . DOI: 10.20040/j.cnki.1000-7709.2023.20231341
2023年第41卷第12期
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doi: 10.20040/j.cnki.1000-7709.2023.20231341
  • 接收时间:2023-08-14
  • 首发时间:2026-01-28
  • 出版时间:2023-12-25
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  • 收稿日期:2023-08-14
  • 修回日期:2023-09-12
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作者信息
    河海大学水利水电学院,江苏 南京 210098

通讯作者:

吴龙华(1974-),男,副教授、硕导,研究方向为工程水力学,E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
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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