Construction method for widening and filling solidified soil for highway interchange ramp roadbed

Abstract

The invention relates to the technical field of civil construction, in particular to an expressway interchange ramp roadbed widening and solidified soil filling construction method which comprises the steps that the soil feeding range of a roadbed of each area is determined; using solidified soil to loosely lay the roadbed in each area; a bulldozer is used for sequentially flattening the subgrade of each area, and a land leveler is used for sequentially leveling the subgrade of each area; the roadbed in a single area is rolled, and whether the roadbed meets the standard or not is judged after rolling; the roadbed meeting the standard is subjected to watering maintenance, and solidified soil is added layer by layer after maintenance is completed; and renovating the surface of the roadbed and the slope. After rolling of the single-layer roadbed is completed, whether the flatness or compactness of the roadbed meets the standard or not is judged according to the thickness change amount of the roadbed, corresponding operation is used according to the judgment result so that the rolled single layer can meet the standard, and the filling efficiency of the roadbed is effectively improved.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a construction method for widening and filling solidified soil on an expressway interchange ramp roadbed. Background technique [0002] The traffic volume of expressways is increasing year by year. Due to the underestimation of the rapid growth of traffic in the early construction of expressways, some expressway intercommunications have experienced traffic saturation, which reduces the efficiency of expressway intercommunication. Compared with newly built roads, the widening and reconstruction of old roads, especially the widening and reconstruction of interchange ramps, is difficult to construct, with complex processes and high quality requirements. Due to the different foundation settlements of the new and old subgrades, their settlement deformations are also different, resulting in differential settlement between the old and new subgrades. [0003] The ...

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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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