| 墙背土压力非线性分布对抗倾覆稳定性的影响 |
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| 引用本文： | 曾革,周志刚. 墙背土压力非线性分布对抗倾覆稳定性的影响[J]. 湖南城市学院学报(自然科学版), 2009, 18(2): 1-4 |
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| 作者姓名： | 曾革 周志刚 |
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| 作者单位： | 长沙理工大学,公路交通学院,长沙,410076;湖南城市学院,土木工程学院,湖南,益阳,413000;长沙理工大学,公路交通学院,长沙,410076 |
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| 基金项目： | 长沙理工大学公路工程省部共建重点实验室开放基金 |
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| 摘 要： | 现行<公路路基设计规范>对挡土墙抗倾覆稳定性的设计是假定土压力分布为线性分布下进行的,没有考虑墙背实际土压力的非线性分布较假定的线性分布合力作用点高度有所提高的影响.按现行规范计算出的抗倾覆稳定性系数大于实际值,挡土墙抗倾覆稳定性设计达不到期望的安全储备.通过力学分析,导出了土压力非线性分布下合力作用点高度的计算式和抗倾覆稳定系数的计算式,建立了挡土墙抗倾覆稳定性设计的新方法.在与现行规范法对比的基础上,建议在工程实践中采用新方法对挡土墙的抗倾覆稳定性设计进行复核,并在必要时进行调整.
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| 关 键 词： | 道路工程 抗倾覆稳定性设计 土压力合力作用点高度 挡土墙 |
Influence of no Liner Distribution of Earth Pressure for the Back of Retaining Wall on Toppling Stability |
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| ZENG Ge,ZHOU Zhi-gang. Influence of no Liner Distribution of Earth Pressure for the Back of Retaining Wall on Toppling Stability[J]. Journal of Hunan City University:Natural Science, 2009, 18(2): 1-4 |
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| Authors: | ZENG Ge ZHOU Zhi-gang |
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| Affiliation: | 1.Institute of Highway Traffic and Transportation;Changsha University of Science&Technology;Changsha;Hunan 410076;2.Civil Engineering College;Hunan City University;Yiyang;Hunan 413000;China |
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| Abstract: | Toppling stability design of retaining wall is based on that linear distribution of earth pressure is assumed in the current JTG D30-2004 specification for design on highway subgrades.It does not think over that synthetic function place height of no liner distribution of earth pressure is higher than the liner distribution of earth pressure for the back of retaining wall.Calculation value of toppling stability coefficient is larger than real value by the current specification.Design of toppling stability is... |
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| Keywords: | Road engineering design of toppling stability function place height of earth pressure synthetic retaining wall |
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