Guarantee method of unobstructed main road during highway reconstruction and expansion construction period

Abstract

The invention discloses a guarantee method of an unobstructed main road during the highway reconstruction and expansion construction period. The method comprises the steps of continuously establishing three temporary openings at one part of a medial strip; dividing the incoming lanes and the leaving lanes on the two sides of the medial strip of a highway to be reconstructed and expanded into construction sections with alternate A roadbed sections and B roadbed sections which have different lengths; after the early construction from the A roadbed sections to the lower surface layer of the road surface is over, driving the cars into the B roadbed sections through the temporary openings of the medial strip; and changing the passed temporary opening positions according to the construction progress, so as to create a working face for alternate construction of the A roadbed sections and the B roadbed sections to further achieve whole time unobstructed bi-directional four lanes. The method is clear in engineering significance and easy to operate, and can be used for guaranteeing the main bi-directional four lanes to be unobstructed during the construction period of reconstructing and expanding a bi-directional four-lane highway into a highway with eight or more bi-directional lanes.

Description

technical field [0001] The invention relates to a method for ensuring the traffic of main line roads during the reconstruction and expansion construction period of an expressway, and is particularly suitable for the traffic protection of the main line with two directions and four lanes during the reconstruction and expansion of the original two-way four-lane high-speed highway into a two-way expressway with more than eight lanes. Background technique [0002] From the 1990s to the beginning of this century, most of the expressways built in my country were two-way four-lane. With the development of the national economy and the improvement of people's living standards, the traffic flow on the expressway has increased significantly, resulting in a gradual decrease in its service level. Some projects have been done domestically to transform 4 lanes into two-way 8-lane or even two-way 10-lane. Traffic protection during reconstruction and expansion construction is a very difficult ...

AI Technical Summary

Problems solved by technology

Traffic protection during reconstruction and expansion construction is a very difficult issue. From the perspectives of improving construction progress and ensuring construction safety, it is the most reliable to close the entire section of the existing expressway for construction; but from the perspective of ensuring that the expressway provides a convenient way for people to travel, From the perspective of not affecting the normal operation of major urban economies, during the reconstruction and expansion construction period, it is necessary not to significantly reduce the service level but to keep the expressway unobstructed; Road managers are almost unacceptable

[0003] In previous expressway reconstruction and expansion projects, due to the inoperability of the traffic protection plan, many of the traffic protection plans scheduled at the beginning of the construction could not be implemented, and measures such as long-distance two-way two-lane traffic, forced diversion, and even closed construction of sections had to be taken. , such as the Beijing-Shibai Expressway, etc., have seriously affected the driving safety and construction safety during the construction period and the traffic between the cities connected by the expressway

Utilizing the opening of the original central divider or adding temporary openings in the central divider to achieve alternate traffic openings on the left and right sides is a common solution. If one or two temporary openings are set in the central divider, the area around the temporary openings cannot be solved when the left and right sides are opened to traffic alternately. In order to deal with the problem of old road disease and widening on both sides, in order to deal with this area, most of the temporary sidewalks are paved, and the vehicles drive slowly through the sidewalks. In addition, the distance between the front and rear of the temporary opening area is short, which is not conducive to ensuring construction quality and construction safety.

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