Construction method of road foundation widening and filling of expressway interchange turns with solidified soil

Abstract

The invention relates to the technical field of civil construction, in particular to a construction method for widening, filling, and solidifying soil for highway inter-turn roadbeds. Bulldozers are used to level the subgrades in each area in turn, and graders are used to level the subgrades in each area in turn; the subgrades in a single area are rolled and it is determined whether the subgrade meets the standards after rolling; Add solidified soil layer by layer; renovate the subgrade surface and slope. After completing the rolling of the single-layer roadbed, the present invention will determine whether the flatness or compaction of the roadbed meets the standard according to the thickness change of the roadbed, and use the corresponding operation according to the judgment result to make the single layer after rolling meet the standard. , effectively improving the filling efficiency for the roadbed.

Description

technical field [0001] The invention relates to the technical field of civil construction, in particular to a construction method for widening, filling and solidifying soil for road foundations of highway interchanges. Background technique [0002] The traffic volume of expressways is increasing year by year. Due to insufficient estimates of the rapid growth of traffic in the early construction of expressways, some expressways have been saturated with traffic at present, which reduces the efficiency of expressways. Compared with newly built roads, the widening and reconstruction of old roads, especially the widening and reconstruction of interchange ramps, is difficult to construct, complicated in process and high in quality requirements. Due to the different settlements of the old and new subgrades, their settlement deformations are also different, resulting in differential settlement between the old and new subgrades. [0003] The use of solidified soil construction techn...

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Problems solved by technology

[0005] For this reason, the present invention provides a construction method for widening and filling solidified soil on highway interchange ramp roadbed, which is used to overcome the problems caused by the inability to effectively process single-layer fill soil whose flatness and compaction degree do not meet the standards in the prior art. Aiming at the problem of low filling efficiency of roadbed

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