Article(id=1223193064450150847, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20221515, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1658505600000, receivedDateStr=2022-07-23, revisedDate=1661961600000, revisedDateStr=2022-09-01, acceptedDate=null, acceptedDateStr=null, onlineDate=1769561552392, onlineDateStr=2026-01-28, pubDate=1674576000000, pubDateStr=2023-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769561552392, onlineIssueDateStr=2026-01-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769561552392, creator=13701087609, updateTime=1769561552392, updator=13701087609, issue=Issue{id=1223193053830169317, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='1', pageStart='1', pageEnd='220', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769561549861, creator=13701087609, updateTime=1769567790701, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1223219229885857794, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1223219229885857795, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1223193053830169317, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=155, endPage=158, ext={EN=ArticleExt(id=1223193064836026849, articleId=1223193064450150847, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Effect of Temperature and Salinity on Shear Mechanical Properties of Coral Sand, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

Coral sand is an important material for island and reef engineering construction. Its physical and mechanical properties in different marine environments directly affect the design, construction and long-term operation of island and reef structures. In order to study the shear mechanical properties of coral sand under the influence of temperature and salinity, the triaxial drainage shear tests of coral sand in the South China Sea were carried out at different temperatures and salinity by using the self-developed temperature controlled pile-soil interface triaxial tester. The results show that similar to ISO standard sand, the shear stress-strain curves of coral sand have peaks, presenting its characteristics of strain softening; The shear strength of coral sand is not significantly affected by temperature, but it is sensitive to salinity. Compared with fresh water environment, the peak shear strength of coral sand in salt water environment decreases by 2.5%-8.5%, and the lower of confining pressure, the greater of decrease range; Salinity has a deterioration effect on the cohesion of coral sand, and its reduction range is about 30%, but the effect on the internal friction angle of coral sand is not obvious.

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珊瑚砂作为岛礁工程建设的重要材料,其在不同海洋环境下的物理力学特性直接影响岛礁构筑物的设计、施工及长期运行。为研究温度和盐度影响下珊瑚砂剪切力学特性,采用自主研制的温控桩-土接触面三轴试验仪,对南海海域的珊瑚砂进行了不同温度和盐度的三轴排水剪切试验。结果表明,与标准砂类似,珊瑚砂的剪切应力-应变曲线存在峰值,且呈现出应变软化特征;珊瑚砂的抗剪强度受温度影响不明显,但对盐度比较敏感,相对于淡水环境,盐度使峰值抗剪强度下降了2.5%~8.5%,且围压越低降幅越大;盐度对珊瑚砂的粘聚力有劣化效应,其减小幅度接近30%,但对珊瑚砂内摩擦角的影响不明显。

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许晓亮(1989-),男,副教授、硕导,研究方向为岩土工程等,E-mail:
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李蓓(1996-),女,硕士研究生,研究方向为岩土工程,E-mail:

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李蓓(1996-),女,硕士研究生,研究方向为岩土工程,E-mail:

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李蓓(1996-),女,硕士研究生,研究方向为岩土工程,E-mail:

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温度和盐度对珊瑚砂抗剪力学性能的影响
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李蓓 1 , 雷潇 2 , 徐家鹏 1 , 郭宇 1 , 许晓亮 1
水电能源科学 | 水利水电工程 2023,41(1): 155-158
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水电能源科学 | 水利水电工程 2023, 41(1): 155-158
温度和盐度对珊瑚砂抗剪力学性能的影响
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李蓓1 , 雷潇2, 徐家鹏1, 郭宇1, 许晓亮1
作者信息
  • 1.三峡大学三峡库区地质灾害教育部重点实验室,湖北 宜昌 443002
  • 2.四川电力设计咨询有限责任公司,四川 成都 610000
  • 李蓓(1996-),女,硕士研究生,研究方向为岩土工程,E-mail:

通讯作者:

许晓亮(1989-),男,副教授、硕导,研究方向为岩土工程等,E-mail:
Effect of Temperature and Salinity on Shear Mechanical Properties of Coral Sand
Bei LI1 , Xiao LEI2, Jia-peng XU1, Yu GUO1, Xiao-liang XU1
Affiliations
  • 1.Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China
  • 2.Power China Sichuan Electric Power Engineering Co., Ltd., Chengdu 610000, China
出版时间: 2023-01-25 doi: 10.20040/j.cnki.1000-7709.2023.20221515
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珊瑚砂作为岛礁工程建设的重要材料,其在不同海洋环境下的物理力学特性直接影响岛礁构筑物的设计、施工及长期运行。为研究温度和盐度影响下珊瑚砂剪切力学特性,采用自主研制的温控桩-土接触面三轴试验仪,对南海海域的珊瑚砂进行了不同温度和盐度的三轴排水剪切试验。结果表明,与标准砂类似,珊瑚砂的剪切应力-应变曲线存在峰值,且呈现出应变软化特征;珊瑚砂的抗剪强度受温度影响不明显,但对盐度比较敏感,相对于淡水环境,盐度使峰值抗剪强度下降了2.5%~8.5%,且围压越低降幅越大;盐度对珊瑚砂的粘聚力有劣化效应,其减小幅度接近30%,但对珊瑚砂内摩擦角的影响不明显。

珊瑚砂  /  剪切强度  /  温度  /  盐度  /  粘聚力

Coral sand is an important material for island and reef engineering construction. Its physical and mechanical properties in different marine environments directly affect the design, construction and long-term operation of island and reef structures. In order to study the shear mechanical properties of coral sand under the influence of temperature and salinity, the triaxial drainage shear tests of coral sand in the South China Sea were carried out at different temperatures and salinity by using the self-developed temperature controlled pile-soil interface triaxial tester. The results show that similar to ISO standard sand, the shear stress-strain curves of coral sand have peaks, presenting its characteristics of strain softening; The shear strength of coral sand is not significantly affected by temperature, but it is sensitive to salinity. Compared with fresh water environment, the peak shear strength of coral sand in salt water environment decreases by 2.5%-8.5%, and the lower of confining pressure, the greater of decrease range; Salinity has a deterioration effect on the cohesion of coral sand, and its reduction range is about 30%, but the effect on the internal friction angle of coral sand is not obvious.

coral sand  /  shear strength  /  temperature  /  salinity  /  cohesion
李蓓, 雷潇, 徐家鹏, 郭宇, 许晓亮. 温度和盐度对珊瑚砂抗剪力学性能的影响. 水电能源科学, 2023 , 41 (1) : 155 -158 . DOI: 10.20040/j.cnki.1000-7709.2023.20221515
Bei LI, Xiao LEI, Jia-peng XU, Yu GUO, Xiao-liang XU. Effect of Temperature and Salinity on Shear Mechanical Properties of Coral Sand[J]. Water Resources and Power, 2023 , 41 (1) : 155 -158 . DOI: 10.20040/j.cnki.1000-7709.2023.20221515
  • 湖北省自然科学基金创新群体项目(2020CFA049)
2023年第41卷第1期
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doi: 10.20040/j.cnki.1000-7709.2023.20221515
  • 接收时间:2022-07-23
  • 首发时间:2026-01-28
  • 出版时间:2023-01-25
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  • 收稿日期:2022-07-23
  • 修回日期:2022-09-01
基金
湖北省自然科学基金创新群体项目(2020CFA049)
作者信息
    1.三峡大学三峡库区地质灾害教育部重点实验室,湖北 宜昌 443002
    2.四川电力设计咨询有限责任公司,四川 成都 610000

通讯作者:

许晓亮(1989-),男,副教授、硕导,研究方向为岩土工程等,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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