填筑形式对填方路基稳定性的影响
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摘要
填筑形式对于填方路基的稳定性具有重要的影响,本文结合杭州九峰垃圾焚烧厂进场道路工程,对高填方和半挖半填两种路基断面进行施工期的坡面稳定性分析,研究了坡率、级数等多种因素对坡面安全稳定性的影响。结果表明,适当增加放坡级数、放缓坡率都可提高稳定性,但放缓坡率更适于高填方路基,增加级数更适于半挖半填路基;在边坡整体高度中下方放坡时稳定性最高;上陡下缓的放坡形式能够获得更高的安全系数,且土方量更少。
The filling form has an important influence on the stability of the fill roadbed. This paper combines the approach road engineering of Hangzhou Jiufeng waste incineration plant to carry out the slope stability during the construction period of high fill and semi-cut and half-filled roadbed sections. The analysis analyzed the effects of various factors such as slope rate and series on the safety and stability of the slope. The results show that the proper increase of the grade of grading and the slowing of the slopecan improve the stability, but the slowing slope rate is more suitable for the high fill roadbed. The increasing number of stages is more suitable for semi-cutting and semifilling the roadbed; the overall height of the slope the stability is highest when the middle and lower slopes are sloping; the upper and lower grading forms can obtain a higher safety factor and less earthwork.
The filling form has an important influence on the stability of the fill roadbed. This paper combines the approach road engineering of Hangzhou Jiufeng waste incineration plant to carry out the slope stability during the construction period of high fill and semi-cut and half-filled roadbed sections. The analysis analyzed the effects of various factors such as slope rate and series on the safety and stability of the slope. The results show that the proper increase of the grade of grading and the slowing of the slopecan improve the stability, but the slowing slope rate is more suitable for the high fill roadbed. The increasing number of stages is more suitable for semi-cutting and semifilling the roadbed; the overall height of the slope the stability is highest when the middle and lower slopes are sloping; the upper and lower grading forms can obtain a higher safety factor and less earthwork.
引文
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[3]赵建军,贺宇航,黄润秋,等.基于因子分析法的边坡稳定性评价指标权重[J].西南交通大学学报, 2015(2):325-330.
[4]田继雪,魏迎奇,蔡红,等.极端降雨条件下高填方工程的稳定性研究[J].水利学报, 2014(s2):175-179.
[5]唐栋,李典庆,周创兵,等.考虑前期降雨过程的边坡稳定性分析[J].岩土力学, 2013(11):3239-3248.
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[8]中交第二公路勘察设计研究院公司.公路路基设计规范:JTGD30-2015[S].北京:人民交通出版社, 2015.
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[2]凌露.高填方土质路基稳定性分析与填筑技术研究[D].长沙:中南大学, 2014.
[3]赵建军,贺宇航,黄润秋,等.基于因子分析法的边坡稳定性评价指标权重[J].西南交通大学学报, 2015(2):325-330.
[4]田继雪,魏迎奇,蔡红,等.极端降雨条件下高填方工程的稳定性研究[J].水利学报, 2014(s2):175-179.
[5]唐栋,李典庆,周创兵,等.考虑前期降雨过程的边坡稳定性分析[J].岩土力学, 2013(11):3239-3248.
[6]蔡宁.斜坡地基上路基边坡稳定性分析及治理措施[D].长沙:湖南大学, 2009.
[7]王衍汇,倪万魁,石博溢,等.延安新区黄土高填方边坡稳定性分析[J].水利与建筑工程学报, 2014(5):52-56.
[8]中交第二公路勘察设计研究院公司.公路路基设计规范:JTGD30-2015[S].北京:人民交通出版社, 2015.
[9]中华人民共和国国家标准编写组.工程岩体分级标准:GB50218-94[S].北京:中国计划出版社,1995.