既有挡土墙加固加高设计与稳定性分析
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摘要
结合工程实例,介绍了既有建筑挡土墙加固加高设计方案。在原支护设计资料缺失,未能明确原有挡墙形状的情况下,提出将原有挡土墙等效为一种岩土层的方式,利用理正岩土计算软件反算挡墙等效土层抗剪参数,在此基础上采用框架预应力锚索对挡土墙进行加固加高,并利用Plaxis有限元软件对设计方案进行分析。监测结果表明,该边坡支护稳定,方案可行,并具有较好的经济效益。
Based on an engineering project,this paper introduces the design scheme of reinforcing and heightening original retaining wall. In the absence of the old slope design data which can determine the size of original retaining wall,a method that equates the original retaining wall with a soil layer is proposed. Leading geotechnical software is used to determine the equivalent soil shear parameters through back calculation. On this basis,grillage supporting structure with prestressed anchor is applied to reinforce and heighten original retaining wall. Finally the finite element software Plaxis is used for the design scheme analysis. The results show that the slope is stable,this method is applicable,and has good ecological benefit.
Based on an engineering project,this paper introduces the design scheme of reinforcing and heightening original retaining wall. In the absence of the old slope design data which can determine the size of original retaining wall,a method that equates the original retaining wall with a soil layer is proposed. Leading geotechnical software is used to determine the equivalent soil shear parameters through back calculation. On this basis,grillage supporting structure with prestressed anchor is applied to reinforce and heighten original retaining wall. Finally the finite element software Plaxis is used for the design scheme analysis. The results show that the slope is stable,this method is applicable,and has good ecological benefit.
引文
[1]何善国.病险及旧挡土墙加固改造途径与措施探讨[J].水利规划与设计,2013(02):30-34.
[2]方俊杰,刘泽,武可爽,等.浆砌片石挡土墙稳定性分析与加固方法研究[J].湖南交通科技,2016,42(4):18-21.
[3]马全珍,钟秀梅,张宝华.失稳重力式挡土墙加固方法的探讨与应用[J].山西建筑,2011,37(12):71-72.
[4]王勇.基于框锚加固技术的重力式挡土墙稳定性分析[D].兰州:兰州理工大学,2012.
[5]唐佳.公路路堤挡土墙失稳机理及其加固治理研究[D].长沙:中南大学,2007.
[6] GB50330-2013建筑边坡工程技术规范[S]. 2013.
[2]方俊杰,刘泽,武可爽,等.浆砌片石挡土墙稳定性分析与加固方法研究[J].湖南交通科技,2016,42(4):18-21.
[3]马全珍,钟秀梅,张宝华.失稳重力式挡土墙加固方法的探讨与应用[J].山西建筑,2011,37(12):71-72.
[4]王勇.基于框锚加固技术的重力式挡土墙稳定性分析[D].兰州:兰州理工大学,2012.
[5]唐佳.公路路堤挡土墙失稳机理及其加固治理研究[D].长沙:中南大学,2007.
[6] GB50330-2013建筑边坡工程技术规范[S]. 2013.