土工格栅加固高路堤的抗震性能分析
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摘要
国内外关于土工格栅加固路堤边坡抗震效应的研究甚少报道。文中结合5.12汶川大地震震害调查资料,运用有限差分法分析了友谊隧道出口处42 m高路堤在地震中基本保持完好状态的原因,主要是由于土工格栅的加固作用;此外,优质的砂岩填料对路堤稳定性的提高也发挥了重要作用。文中关于土工格栅抗震性能的分析,对高烈度地震区的路堤的抗震设计有一定指导作用。
It is rarely reported of the study on anti-seismic effect of embankment and side slope reinforced with geotechnical grille both at home and abroad.Combined with the survey data of 5.12 Wenchuan Severe Earthquake,this paper,employing finite difference method,analyzes the reason of 42m-high embankment at Youyi Tunnel exit keeping in good condition,which is largely due to the reinforcement of geotechnical grille.In addition,high quality sandstone filling also plays an important role in improvement of embankment stability.Thereof the analysis on earthquake resistance of geotechnical grille has certain guidance for embankment design in high-intensity earthquake zone.
It is rarely reported of the study on anti-seismic effect of embankment and side slope reinforced with geotechnical grille both at home and abroad.Combined with the survey data of 5.12 Wenchuan Severe Earthquake,this paper,employing finite difference method,analyzes the reason of 42m-high embankment at Youyi Tunnel exit keeping in good condition,which is largely due to the reinforcement of geotechnical grille.In addition,high quality sandstone filling also plays an important role in improvement of embankment stability.Thereof the analysis on earthquake resistance of geotechnical grille has certain guidance for embankment design in high-intensity earthquake zone.
引文
[1]卢寿德,李小军.汶川8.0级地震加速度记录(中国强震记录汇报)[M].地震出版社,2008.
[2]刘启元,陈九辉,等.汶川MS 810地震:川西流动地震台阵观测数据的初步分析[J].地震地质,2008(9).
[3]霍俊荣,胡聿贤.地震动峰值参数衰减规律的研究[J].地震工程与工程振动,1992(2).
[4]徐晓艳.土工格栅拉拔特性的试验研究[D].大连理工大学,2007.
[5]任自铭,姚令侃.坡面形态对地震作用下土质边坡稳定性影响[J].路基工程,2008(5).
[2]刘启元,陈九辉,等.汶川MS 810地震:川西流动地震台阵观测数据的初步分析[J].地震地质,2008(9).
[3]霍俊荣,胡聿贤.地震动峰值参数衰减规律的研究[J].地震工程与工程振动,1992(2).
[4]徐晓艳.土工格栅拉拔特性的试验研究[D].大连理工大学,2007.
[5]任自铭,姚令侃.坡面形态对地震作用下土质边坡稳定性影响[J].路基工程,2008(5).
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