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高速公路绿色加筋格宾挡墙数值分析及现场试验

, PP. 18-23

Keywords: 道路工程,绿色加筋格宾挡墙,现场试验,挡墙变形,FLAC3D数值模拟

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Abstract:

?依托浙江绍兴至诸暨高速公路第7标段绿色加筋格宾挡墙建设,对K38+398处加筋挡墙断面进行数值分析及试验,研究筋材拉应变、挡墙侧向变形的分布规律及潜在滑裂面。结果表明:挡墙中各层加筋体水平变形量随着填土的增高而增大;筋材的拉应变随着填土的增高而增加,其数值在距墙面越近时越大,越远越小;加筋挡墙潜在滑裂面与0.3H法(单楔体法)滑裂面位置基本一致;加筋边坡的安全系数随着外荷载的增加逐渐减小;交通荷载在30kPa以内时,滑裂面未上下贯通,此类挡墙安全可靠;研究成果可为绿色加筋格宾挡墙的设计及施工提供参考。

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