Wrapping type reinforcement solidification method for roadbed of high filled embankment
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A solidification method and wrapping technology, applied in roads, excavations, roads, etc., can solve problems such as failure to achieve restraint, uncontrollable vertical displacement of soil, bulging reinforcement layer, etc., to solve the problem of poor activity and reduce The amount of sand and gravel, the effect of preventing shrinkage cracks
Active Publication Date: 2016-10-12
四川天宜石油化工工程有限公司
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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
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Embodiment 1
[0024] The present invention's wrap-type reinforced solidification construction steps are as follows:
[0025] Step 1, making the solidified soil material: the solidified soil material 1 is made by uniformly mixing the soil curing agent and the filler soil, the soil curing agent is 3-8% of the dry soil weight of the filler; the water content is 2-3% more than the optimal water content , an additional 2-3% is required for the chemical reaction between the soil curing agent and the roadbed filler; the raw materials of the soil curing agent are proportioned by weight: 8 parts of gypsum, 10 parts of quicklime, 20 parts of fly ash, 36 parts of blast furnace slag, silicic acid Dicalcium, magnesium silicate and aluminum silicate 3:2:3 mixture 30 parts, calcium chloride, sodium chloride and magnesium chloride 3:4:2 mixture 5 parts, aluminum sulfate, sodium sulfate and magnesium sulfate 2:4 : 9 parts of a mixture of 3.
[0026] Step 2, laying reinforcements: pave the reinforcements 2 ...
Embodiment 2
[0034] The steps of this embodiment are the same as in Example 1, except that the raw materials of the soil curing agent are proportioned by weight: 6 parts of gypsum, 12 parts of quicklime, 18 parts of fly ash, 42 parts of blast furnace slag, dicalcium silicate, silicon 28 parts of a mixture of magnesium sulfate and aluminum silicate 3:3:2, 7 parts of a mixture of calcium chloride, sodium chloride and magnesium chloride 4:3:2, a mixture of aluminum sulfate, sodium sulfate and magnesium sulfate 2:2:3 12 servings.
Embodiment 3
[0036] The steps of this embodiment are the same as in Example 1, except that the raw materials of the soil curing agent are proportioned by weight: 4 parts of gypsum, 14 parts of quicklime, 22 parts of fly ash, 45 parts of blast furnace slag, dicalcium silicate, silicon 16 parts of a mixture of magnesium sulfate and aluminum silicate 3:3:4, 4 parts of a mixture of calcium chloride, sodium chloride and magnesium chloride 3:3:2, a mixture of aluminum sulfate, sodium sulfate and magnesium sulfate 2:3:3 10 servings.
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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...
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