| 环向加筋灰土墩极限承载力计算方法 |
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| 引用本文： | 崔玉萍,高安荣,孙立强,冯守中,郎瑞卿,赵泽宇.环向加筋灰土墩极限承载力计算方法[J].水利与建筑工程学报,2021,0(2):106-112. |
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| 作者姓名： | 崔玉萍 高安荣 孙立强 冯守中 郎瑞卿 赵泽宇 |
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| 作者单位： | 1．中交基础设施养护集团有限公司，北京100020；2．天津大学，天津300072；3．武汉广益交通科技股份有限公司，湖北武汉430074；4．天津市软土特性与工程环境重点实验室，天津300384 |
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| 基金项目： | 国家自然科学基金项目(52078336;52008286);天津市自然科学基金项目(19JCQNJC06900;19JCYBJC22100)。 |
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| 摘 要： | 本文结合理论分析和数值模拟，分析了大直径环向加筋灰土墩加固机理和承载特性，通过因素分析研究了影响其极限承载力的因素及规律；结合数值计算结果对规范规定的承载力计算方法中的端阻力发挥系数进行修正。研究表明:通过设置环向加筋材料能够大幅度提高灰土墩极限承载力，且环向加筋灰土墩承载力随着环向加筋材料抗拉强度的增大而增大；承载力随加筋材料强度的提高而提高，引入能够考虑加筋作用和土的强度的端阻力发挥系数，并给出了其确定方法，对规范计算极限承载力的方法进行了修正，修正后的计算方法能够较好反映环向加筋灰土墩承载特性。
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| 关 键 词： | 加固机理 环向加筋 灰土墩 极限承载力 |
Ultimate Bearing Capacity Calculation of Ring-reinforced Lime Mound |
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| CUI Yuping,GAO Anrong,SUN Liqiang,FENG Shouzhong,LANG Ruiqing,ZHAO Zeyu.Ultimate Bearing Capacity Calculation of Ring-reinforced Lime Mound[J].Journal of Water Resources Architectural Engineering,2021,0(2):106-112. |
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| Authors: | CUI Yuping GAO Anrong SUN Liqiang FENG Shouzhong LANG Ruiqing ZHAO Zeyu |
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| Affiliation: | (China Communication Infrastructure Conservation Group Co.,Ltd.,Beijing 100020,China;Tianjin University,Tianjin 300072,China;Wuhan Guangyi Transportation Science and Technology Incorporated Company,Wuhan,Hubei 430074;Key Laboratory of Soft Soil Engineering Character and Engineering Environment of Tianjin,Tianjin 300384) |
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| Abstract: | In this paper,combined with theoretical analysis and a large number of numerical simulations,the reinforcement mechanism and bearing characteristics of the large-diameter circular reinforced lime mound are analyzed.The factors and laws affecting its ultimate bearing capacity are studied through factor analysis.On this basis,the standard calculation method is revised through numerical results.The results show that the large-diameter ring-reinforced lime mound can limit the lateral deformation of the lime mound and increase the bearing capacity.Furthermore,a better compaction effect on the surrounding soil is provided by dynamic compaction.Reinforced materials can greatly increase the ultimate bearing capacity of lime mound.With the tensile strength of the reinforced materials increases,the ultimate bearing capacity first increases and then gradually decreases.Based on the reinforcement enhancement coefficient,the standard calculation of ultimate bearing capacity is revised,which can reflect the bearing characteristics of the ring-reinforced lime mound. |
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| Keywords: | reinforcement mechanism ring-reinforced lime mound ultimate bearing capacity |
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