U-shaped groove foundation of immersed soft foundation wrapped with opposite-tension reinforced earth railway embankment structure

Abstract

The invention provides a U-shaped groove foundation of the immersed soft foundation wrapped with an opposite-tension reinforced earth railway embankment structure, which not only meets the safety andstability requirements of high embankment slope retaining engineering in railway flooding section, but also solves the structural durability problem under flooding condition. At the same time, it hasstrong integrity and large structural stiffness, which is conducive to reduce the uneven settlement of subgrade foundation on deep and thick soft soil foundation, and can adapt to lower foundation bearing capacity conditions. Comprises two side panels and a filter layer located on the back of the filter layer, an inclusion and a road basic body filled between the two side inclusions, wherein the road basic body is provided with a wrapping geogrid layered with the wrapping geogrid, and the wrapping geogrid forms a reverse wrapping on the inclusions at both ends of the wrapping geogrid transversely. A U-shape reinforced concrete groove foundation is arrange below that wrapped-up opposite-tension reinforced soil structure body, a lower road basic body is filled in the U-shaped reinforced concrete groove foundation, a reinforced concrete foundation is arranged on the lower road basic body inside the opening, and the lower ends of the two side panels are respectively located on the same side reinforced concrete foundation; The bottom of the reinforced concrete U-shaped groove foundation extends transversely outward to form a bottom plate and is seated on a sand cushion layer which is laid on the consolidated foundation.

Description

Technical field [0001] The invention relates to a composite supporting structure for a railway high-fill embankment, in particular to a new supporting structure for a soft soil foundation with high flooding and high integrity requirements. Background technique [0002] With the vigorous development of my country's railway construction, the requirements for economy and adaptability in the construction process are getting higher and higher. Especially in places where the topography is restricted and the properties of structures are restricted, such as the restricted grading of the high-fill roadbed at the head of a bridge. In the above cases, the use of extended bridge sections or the use of gravity (balanced weight) retaining walls for slope retraction will inevitably increase a larger investment, and the gravity (balanced weight) retaining walls have higher requirements for the bearing capacity of the foundation. Therefore, in order to reduce investment, meet applicability and e...

AI Technical Summary

Problems solved by technology

At the same time, the water level at the bridge head section is relatively high, so it is necessary to simultaneously consider the anti-scourability and lateral water pressure, as well as the durability of structures that have been submerged for a long time

At present, there is no report on the application and research of U-shaped groove foundation reinforced soil retaining wall in flooded high-fill subgrade engineering at home and abroad

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