刘杰,杨仕教,严谭路,罗辉.路堤高边坡桩锚与悬臂式挡墙联合支护特性分析与监测[J].南华大学学报(自然科学版),2017,31(4):6~11.[LIU Jie,YANG Shi-jiao,YAN Tan-lu,LUO Hui.Analysis and Monitoring of Combined Support by Pile Anchor and Cantilever Retaining Wall in High Embankment Slope[J].Journal of University of South China(Science and Technology),2017,31(4):6~11.]
路堤高边坡桩锚与悬臂式挡墙联合支护特性分析与监测
Analysis and Monitoring of Combined Support by Pile Anchor and Cantilever Retaining Wall in High Embankment Slope
投稿时间:2017-12-01  
DOI:
中文关键词:  路堤高边坡  组合结构  联合支护  数值模拟
英文关键词:High embankment slope  Composite structure  Composite support  Numerical simulation
基金项目:国家自然科学基金项目(50974076)
作者单位
刘杰 南华大学 核资源工程学院,湖南 衡阳 421001 
杨仕教 南华大学 核资源工程学院,湖南 衡阳 421001 
严谭路 南华大学 核资源工程学院,湖南 衡阳 421001 
罗辉 长沙理工大学 交通运输工程学院,湖南 长沙 410076 
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中文摘要:
      目前在实际工程设计中组合结构应用越来越广泛,但协调作用理论和受力特性尚未完善.为了系统研究桩锚与悬臂式挡墙联合支护结构受力特性,采用有限元方法与监测手段结合,建立三种分析模型.分析表明:单独悬臂挡墙设计模型立面板弯矩稍低于联合设计模型,变化幅度小且变化规律基本一致;单独悬臂挡墙模型底板弯矩高于联合设计模型,底板配筋量将远大于实际需要配筋量,造成材料浪费;与联合设计模型相比,单独桩锚设计会使桩身变形计算偏于危险,不利于桩锚支护结构安全,锚杆锚固段轴向拉力大于联合设计模型锚杆轴向力;与监测结果相比,单独悬臂挡墙设计模型坡顶的水平位移偏高,低估了坡顶沉降.本研究所得结论和成果可为类似工程设计以及组合结构设计计算理论研究提供参考和借鉴.
英文摘要:
      At present,the composite structure is being more and more widely used in practical engineering design,however,the theory of coordination function and the characteristic of force have not been perfect.In order to systematically study the mechanical characteristics of structure of pile anchor and hanging combined cantilever retaining wall,three analytical models were established by combining finite element method with monitoring method.Analysis show that the bending moment of the vertical panel of cantilever retaining wall model is slightly lower than that of the joint design model,the range of change is very small,and the variation law is basically consistent;the bending moment of the bottom plate of cantilever retaining wall is higher than that of the joint support design model,the floor reinforcement will be much larger than the actual required reinforcement,resulting in waste of materials;compared with the joint design model,the single pile anchor model will make the calculation of pile deformation more dangerous,which is harmful to the safety of pile anchor support structure;the axial tensile force of anchor section of single pile anchor design model is larger than that of joint support design model;compared with the monitoring results,the horizontal displacement of single cantilever retaining wall slope was relatively high, and underestimated ground surface settlements.The conclusions and results obtained from this paper can provide reference for similar projects design,and can also provide reference for the design and calculation theory of composite structures.
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