Double-side cantilever retaining wall pop-up package opposite-pull type reinforced earth railway embankment structure

Abstract

The invention provides a double-side cantilever retaining wall pop-up package opposite-pull type reinforced earth railway embankment structure, which not only meets the safety and stability requirements of high embankment slope retaining in railway flooding section, but also solves the problems of deep soft soil foundation treatment and structural durability under flooding condition. At the same time, it can effectively shorten the construction period and make the construction more convenient, especially suitable for the case of large width of embankment top surface. Comprises two side panelsand 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 layered with a wrapping geogrid, and the wrapping geogrid forms a reverse wrapping on the inclusions at both ends of the wrapping geogrid. A double-side cantilever retaining wall construction body is arranged below the wrapping opposite-tension reinforced earth structure body, The two-side cantilever retaining wall structure is composed of two-side cantilever retaining walls and a lower road basic body filled in between. A reinforced concrete foundation is arranged on the upper inner side of the two-side cantilever retaining wall vertical arms on the lower road basic body, and the lower ends of the two-side slabs are respectively located on the same-side reinforced concrete foundation. The bottom plate composed of the toe plate and the heel plate of the double-side cantilever retaining wall is located on a sand cushion layer, and the sand cushion layer is laid on a consolidated foundation.

Description

technical field [0001] The invention relates to a composite retaining structure for a high-fill embankment of a railway, in particular to a novel retaining structure for flooded high-fill soft soil foundations with a relatively large roadbed width. Background technique [0002] With the vigorous development of my country's railway construction, the requirements for economy and adaptability are getting higher and higher in the construction process. Especially in places where the topography is limited and the properties of the structure are limited, such as the conditions where the slope of the high fill embankment at the bridgehead is limited. In the above situation, if the scheme of extending the bridge section or adopting the gravity (balanced weight) retaining wall to close the slope will inevitably increase the large investment, and the gravity (balanced weight) retaining wall has higher requirements on the bearing capacity of the foundation. Therefore, in order to reduc...

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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 are no reports at home and abroad on the application and research of double-sided cantilever retaining walls supporting wrapped pair-pull reinforced soil retaining walls in flooded high-fill subgrade projects

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