适用倾斜滑面的刚性抗滑桩最小嵌固深度计算方法
P642.22; 为计算确定桩前滑面倾斜情况下加固边坡的抗滑桩最小嵌固深度,基于倾斜地面条件的抗滑桩计算地基系数法,确定嵌固段桩侧土层压力,同时采用塑性极限分析方法,推导与滑面倾角密切相关的嵌固段土层极限抗力,并根据桩侧地层最大压力不超过其极限抗力的条件,建立了抗滑桩最小嵌固深度计算方法,并确定了其与滑面倾角的关系.实例分析表明,抗滑桩最小嵌固深度随滑面倾角呈非线性增大,在倾角为10° ~ 30°范围内变化显著;嵌固段地层黏聚力、内摩擦角和重度对抗滑桩最小嵌固深度均有明显影响,且呈负相关关系;本文方法所得桩体最小嵌固深度比传统考虑桩前滑面倾斜影响的方法约小18%....
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Published in | 中国地质灾害与防治学报 Vol. 32; no. 4; pp. 113 - 119 |
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Main Authors | , , |
Format | Journal Article |
Language | Chinese |
Published |
西南交通大学高速铁路线路工程教育部重点实验室,四川成都610031%西南交通大学地质工程系,四川成都610031
01.08.2021
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Online Access | Get full text |
ISSN | 1003-8035 |
DOI | 10.16031/j.cnki.issn.1003-8035.2021.04-15 |
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Abstract | P642.22; 为计算确定桩前滑面倾斜情况下加固边坡的抗滑桩最小嵌固深度,基于倾斜地面条件的抗滑桩计算地基系数法,确定嵌固段桩侧土层压力,同时采用塑性极限分析方法,推导与滑面倾角密切相关的嵌固段土层极限抗力,并根据桩侧地层最大压力不超过其极限抗力的条件,建立了抗滑桩最小嵌固深度计算方法,并确定了其与滑面倾角的关系.实例分析表明,抗滑桩最小嵌固深度随滑面倾角呈非线性增大,在倾角为10° ~ 30°范围内变化显著;嵌固段地层黏聚力、内摩擦角和重度对抗滑桩最小嵌固深度均有明显影响,且呈负相关关系;本文方法所得桩体最小嵌固深度比传统考虑桩前滑面倾斜影响的方法约小18%. |
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AbstractList | P642.22; 为计算确定桩前滑面倾斜情况下加固边坡的抗滑桩最小嵌固深度,基于倾斜地面条件的抗滑桩计算地基系数法,确定嵌固段桩侧土层压力,同时采用塑性极限分析方法,推导与滑面倾角密切相关的嵌固段土层极限抗力,并根据桩侧地层最大压力不超过其极限抗力的条件,建立了抗滑桩最小嵌固深度计算方法,并确定了其与滑面倾角的关系.实例分析表明,抗滑桩最小嵌固深度随滑面倾角呈非线性增大,在倾角为10° ~ 30°范围内变化显著;嵌固段地层黏聚力、内摩擦角和重度对抗滑桩最小嵌固深度均有明显影响,且呈负相关关系;本文方法所得桩体最小嵌固深度比传统考虑桩前滑面倾斜影响的方法约小18%. |
Author | 肖世国 孙来宾 齐远 |
AuthorAffiliation | 西南交通大学高速铁路线路工程教育部重点实验室,四川成都610031%西南交通大学地质工程系,四川成都610031 |
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Author_FL | QI Yuan XIAO Shiguo SUN Laibin |
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Keywords | 抗滑桩;嵌固段;滑面倾角;最小嵌固深度;极限分析 |
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Title | 适用倾斜滑面的刚性抗滑桩最小嵌固深度计算方法 |
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