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.
出处
《路基工程》
2010年第3期78-80,共3页
Subgrade Engineering
基金
国家重点基础研究发展计划项目(973计划)
汶川地震次生山地灾害形成机理与风险控制项目(2008CB425802)
铁道部科技研究开发计划课题项目(2008G010-A)
交通部西部交通建设科技项目(200731800003)
关键词
汶川大地震
地震作用
土工格栅
加固
高路堤
Wenchuan Severe Earthquake
earthquake effect
geotechnical grille
reinforcement
high embankment
