Comparison Design Schemes and Implementation for Subgrade Widening on Hub Interchange Ramp of Expressway Under Complex Terrain Conditions of Mountainous Area
This paper aims to study the widening transition on section at D ramp of interconnecting on a typical Highway in Guangxi,by means of field investigation,borehole surveying and calculation analysis and other methods.Considering natural,complex terrain conditions,construction safety,construction period traffic organization,engineering cost and other factors.The three design schemes of retaining wall width,bridge width and foam lightweight concrete width has been comprehensively compared and selected.Foamed lightweight soil has certain feasibility and advantages in this area,and the implementation effect is good,which can provide reference for the design and construction of similar projects.
expressway in mountainous areacomplex terrainfoamed lightweight soilwidening subgradecomparison design schemes
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