土工格栅加筋拓宽路堤有限元分析
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摘要
通过PLAXIS有限元模拟,分析了有无加筋、加筋间距、老路基开挖坡度、格栅强度等因素对拓宽路堤的影响。结果指出:拓宽路堤中采用土工格栅加筋,合理确定加筋间距和强度,可以显著提高拓宽路堤的稳定性;旧路堤的开挖坡度对新路堤的稳定性影响不大,在设计中应综合考虑实际情况予以确定。
The influencing factors of reinforcement, reinforcement spacing, excavation slope of old road foundation and grille strength on widening embankment are analyzed by means of PLAXIS finite element simulation. The results show that the stability of widened embankment can be significantly improved by using geogrid reinforcement and reasonably determining the spacing and strength of reinforcement in widening embankment, and the excavation slope of old embankment has little effect on the stability of new embankment. Therefore, the actual situation should be considered comprehensively in the design.
The influencing factors of reinforcement, reinforcement spacing, excavation slope of old road foundation and grille strength on widening embankment are analyzed by means of PLAXIS finite element simulation. The results show that the stability of widened embankment can be significantly improved by using geogrid reinforcement and reasonably determining the spacing and strength of reinforcement in widening embankment, and the excavation slope of old embankment has little effect on the stability of new embankment. Therefore, the actual situation should be considered comprehensively in the design.
引文
[1]凌建明,钱劲松,黄琴龙,等.路基拓宽工程处治技术及其效果[J].同济大学学报(自然科学版), 2007, 35(1):45-49.
[2]杨庆刚,黄晓明,柴建峰.土工格栅路堤加筋效果的影响因素分析[J].工程地质学报, 2006,14(1):131-137.
[3]杨涛,杨锦忠,石磊,等.土工格栅加筋拓宽路堤有限元分析[J].土木工程学报, 2011(增刊2):37-40.
[4]柏巍,陈灯红,王乾峰.加筋路堤边坡的数值模拟分析[J].灾害与防治工程,2007(1):1-6.
[2]杨庆刚,黄晓明,柴建峰.土工格栅路堤加筋效果的影响因素分析[J].工程地质学报, 2006,14(1):131-137.
[3]杨涛,杨锦忠,石磊,等.土工格栅加筋拓宽路堤有限元分析[J].土木工程学报, 2011(增刊2):37-40.
[4]柏巍,陈灯红,王乾峰.加筋路堤边坡的数值模拟分析[J].灾害与防治工程,2007(1):1-6.