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Weak expansive soil old roadbed reinforcing method and widening method

A weak expansion and subgrade technology, applied in the direction of roads, roads, infrastructure engineering, etc., can solve the problems of difficult construction, large ash and dust on the construction site, and failure to meet environmental protection requirements, so as to solve the problems of difficult construction and low cost input effect

Inactive Publication Date: 2021-03-26
ROAD & BRIDGE INT +1
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Problems solved by technology

[0004] The main purpose of this application is to provide a weak expansive soil old subgrade reinforcement method and a widening method to solve the difficulty of construction in the construction process of the weak expansive soil old subgrade reinforcement in the related art, and the construction site is turned over and mixed with dust. Large, does not meet the environmental protection requirements

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  • Weak expansive soil old roadbed reinforcing method and widening method
  • Weak expansive soil old roadbed reinforcing method and widening method

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Embodiment Construction

[0036] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0037] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for...

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Abstract

The invention discloses a weak expansive soil old roadbed reinforcing method and widening method, and the weak expansive soil old roadbed reinforcing method comprises the following steps: breaking anold roadbed surface, and leveling the position of a roadbed; the pile position of each pile being determined on a roadbed and marked, wherein the pile positions are arranged in an equilateral triangleshape, and the distance between every two adjacent pile positions is twice the influence radius of each slurry spraying pile; and slurry spraying pile construction being conducted on the pile positions, and the composite foundation being formed. The problems that in the prior art, in the construction process of weak expansive soil old roadbed reinforcement, the construction difficulty is large, dust raising is large when ash is turned and mixed on a construction site, and the environmental protection requirement cannot be met are solved.

Description

technical field [0001] The present application relates to the field of road construction, in particular to a method for reinforcing and widening an old subgrade of weak expansive soil. Background technique [0002] With the continuous development of domestic transportation roads, various diseases have occurred in the roadbed construction technology decades ago and have affected the safe use of roads. Among them, the old roadbed with weak expansive soil is a typical case, so it is necessary to strengthen the old roadbed. The second layer of weakly expansive clay on the top of the embankment of the original embankment is relatively thick. If the whole section is excavated and improved with ash, it will cause a great social impact. The construction cost of all removal and refilling will be high, the cycle will be long, and the social impact will be small. It is good, but it is difficult to implement, and there is a lot of dust and dust on the construction site, which does not m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00E02D5/46E01C3/04
CPCE01C3/00E01C3/04E02D5/46
Inventor 渠凯侯兆隆朱庆庆朱丹丹马强
Owner ROAD & BRIDGE INT
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