挡墙-框架结构在高填方道路工程中的应用

Application of Retaining Wall-frame Structure in High Fill Road Engineering

为避免道路路基放坡侵占两侧基本农田,降低路基土承载力要求,文章从结构安全性、合理性、经济性、施工便利性角度出发,与桥梁、扶壁式挡土墙进行方案对比,提出一种悬臂挡墙与闭合框架组合结构,并分析了该结构受力及工程可行性,且在实际项目得到成功应用。结果表明,该种结构可避免道路侵占基本农田,施工速度快,能为市政管线预留空间,并具有节约工程造价等优点,可供类似工程项目参考。

In order to avoid the road subgrade slope encroaching on the basic farmland on both sides and reduce the bearing capacity of subgrade soil,from the perspective of structural safety,rationality,economy and construction convenience,this paper compares with the scheme of bridge and buttress retaining wall,puts forward a combined structure of cantilever retaining wall and closed frame,and analyzes the stress and engineering feasibility of the structure,which has been successfully applied in practical projects.The results show that this kind of structure can avoid road encroachment on basic farmland,the construction speed is fast,can reserve space for municipal pipelines,and has the advantages of saving project cost,which can be used as a reference for similar projects.