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陡坡地段路基差异沉降影响因素及控制措施研究

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以实际工程为背景,基于正交试验方法对山区陡坡路基沉降数据进行方差分析。结果表明,各影响因素对陡坡路基差异性沉降的影响程度依次为:填土高度>斜坡坡度>地基土性质;进一步通过回归方程和响应曲面图,定量直观地揭示了3个因素对路基差异沉降的影响规律。再利用 FLAC3D模拟陡坡路基铺设土工格栅和未铺设时的沉降情况,结果表明,铺设土工格栅后差异沉降值较未铺设时减小了33%,表明铺设土工格栅能有效减小陡坡路基差异沉降。
Study on the Influencing Factors and Control Measures of Deferential Settlement of Steep Slope Subgrade
Based on the real proj ect,variance analysis was used for analyzing the deferential settlement data of steep slope subgrade using the orthogonal experimental design.The results demonstrate that the influence degree follows by:depth of fill>gradient of slope>soil property.Then,based on the regression equation and the response surface plot,the effect of three factors on settlement of steep slope subgrade was revealed directly.Finally,FLAC3D was used to simulate the deferential settle-ment of steep slope subgrade with laying and not laying the geotechnical grille.The results show that the deferential settlement of steep slope subgrade was reduced by 33% after laying the geotechnical grille,which indicates that laying the geotechnical grille is able to effectively reduce the deferential settlement of steep slope subgrade.

slope subgradedeferential settlementorthogonal experimental designFLAC3Dgeotechnical grille

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内蒙古鄂尔多斯市公路工程质量监督站 鄂尔多斯 017000

陡坡路基 差异沉降 正交试验 FLAC3D 土工格栅

2016

交通科技
武汉理工大学

交通科技

影响因子:0.495
ISSN:1671-7570
年,卷(期):2016.(4)
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