Prefabricated tube pile embankment structure and construction method thereof

Abstract

The invention relates to a prefabricated tube pile embankment structure, which mainly comprises a prefabricated tube pile, a vertical drain tube, a shallow curing plate, a thin reinforcement concrete continuous plate, a rubble layer, a bubble concrete rolling-resistant layer, a concrete protection layer, a slag layer and a pavement structure, wherein the prefabricated tube pile penetrates through a soft soil layer and extends a relative bearing stratum; a weld seam protection device is arranged outside a prefabricated tube pile welding end plate; the shallow curing plate is arranged at the periphery of the top of the prefabricated tube pile; the thin reinforcement concrete continuous plate is arranged on the shallow curing plate; the top of the prefabricated tube pile is embedded in the thin reinforcement concrete continuous plate; the vertical drain tubes are pre-buried in the thin reinforcement concrete continuous plate and the shallow curing plate, the lower ends of the vertical drain tubes are externally coated with a reverse filter geotextile which is communicated with the rubber layer on the thin reinforcement concrete continuous plate; the bubble concrete rolling-resistant layer, the slag layer and the pavement structure are sequentially arranged on the rubble layer. The prefabricated tube pile embankment structure is high in bearing capacity, less in differential settlement, high in overall structure stability, and convenient to construct.

Description

technical field [0001] The invention relates to a prefabricated tubular pile embankment structure and a construction method thereof, belonging to the field of roadbed engineering. The structure has the advantages of improving the bearing capacity of the roadbed and enhancing the stability of the roadbed, and is suitable for roadbed treatment projects in highways, railways and municipal roads in soft soil areas . Background technique [0002] In recent years, with the rapid and sustainable development of the economy in the Yangtze River Delta, the traffic flow has increased rapidly. In order to make the traffic capacity meet the needs of national economic and social development, the scale of road construction has increased day by day. Since the Yangtze River Delta is located in the coastal area of ​​my country, the coastal area is formed by silt deposits, and there is a wide range of soft soil layers. It has the characteristics of high natural water content, large void ratio,...

AI Technical Summary

Problems solved by technology

Although this method can improve the bearing capacity of the weak soil layer to a certain extent and is convenient for construction, the maximum effective treatment depth of the replacement method is not more than 5m, which greatly limits the scope of application of the replacement method.

The grouting method is to use the grouting pipe to pour an appropriate amount of cement slurry into the soft soil area to be reinforced, and improve the bearing capacity of the subgrade by curing the soft soil layer; In areas with deep soil layers, it is difficult to pour cement grout into deep soft soil layers for grouting and solidification to improve bearing capacity. At the same time, improper control of grouting pressure can easily lead to uneven grouting, resulting in waves on the road surface

[0005] In summary, although the existing embankment structure treatment measures can achieve good results under suitable engineering conditions, there are still some areas that need to be improved.

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