Wrapped Reinforcement Method for High Embankment Subgrade

Abstract

A wrapping type reinforcement solidification method for a roadbed of a high filled embankment is implemented as follows: solidified soil material making, concretely, the solidified soil material is made by uniformly stirring a soil curing agent and filler soil; reinforcement laying, concretely, reinforcements are horizontally crosswise arranged and completely paved on the surface of a lower bearing layer after being leveled in full width, a fixed geogrid is inspected and aligned while being pulled and paved forwards, and the reinforcements are flattened and straightened; solidified soil material paving, concretely, the solidified soil material is paved on the geogrid layer by layer, each layer is ground and formed after being paved uniformly, and grinding is conducted till the filling elevation of wrapping reinforcement solidified soil is reached; wrapping and reinforcement stretching, concretely, the reinforcements of the preserved reinforcement sections at the both sides are inflected upwards to wrap the outer side of the solidified soil material by certain length, and the inflected reinforcements at the both sides are connected by reinforcement stretching strips and paved longitudinally at an equal interval, to form a reinforced solidification wrapping body; and curing and molding, concretely, field soil covers or geomembrane caps the upper parts of the reinforced solidification wrapping bodies for 7-14 days for curing. According to the invention, the light reinforced structure with good deformation compatibility is provided, the dead-weight can be reduced, and thus the load borne by a foundation is effectively decreased.

Description

technical field [0001] The invention relates to a method for wrapping reinforcement and curing of high embankment subgrade. Background technique [0002] Reinforced soil was proposed by French engineer Henri Vidal in 1963. In 1965, the first reinforced retaining wall was built in Planiers in the French Pyrenees. In 1967, Japan called the reinforced soil technology the reinforced geotechnical method and extended it to the construction of railways, highways and slopes. The United States began to conduct research on reinforced soil technology in 1969, and built the first reinforced soil project in 1970. In 1978, the American Society of Civil Engineers held the "Reinforced Soil Friction Coefficient Research Conference" in Pittsburgh. Subsequently, this new reinforced soil technology has been rapidly developed and applied in various countries. In 1982, more than 5,000 reinforced soil projects were built in 37 countries, and it was extended to building foundations, railway emba...

AI Technical Summary

Problems solved by technology

The reinforced soil technology that is widely used now generally adopts the traditional horizontal reinforced soil technology. Most of the reinforcement materials are directional in the soil, and the layered reinforcement and layered filling can only control the horizontal displacement (lateral deformation) of the soil. , but cannot control the vertical displacement of the soil (settlement deformation), let alone restrain the deformation of the whole soil or other azimuths, there may also be weak surfaces due to the reinforcement spacing and the layer, and bulging between the reinforcement layers Phenomenon, resulting in the embankment slope similar to candied haws phenomenon

Images