A road surface drainage system during the construction period of expressway reconstruction and expansion projects

Abstract

The invention discloses a routing table water discharging system in a construction period of an expressway reconstruction and extension project. The routing table water discharging system comprises a temporary water bar, new embankment surface temporary water discharging tanks, a new embankment surface cross slope and a new embankment side ditch. At first, the temporary water bar with the height of 0.1m is built along the outer side of an old embankment curb; old embankment riffle tanks are connected at an opening of the temporary water bar; the lower end of each old embankment tank is jointed with the corresponding new embankment surface temporary discharging tank; and the new embankment side ditch is connected with the new embankment surface temporary discharging tanks. With the adoption of the construction period routing table water discharging system provided by the invention, water on the surface of an old road, water on a slope of an old embankment and water on the surface of a new embankment can be effectively excluded from a roadbed range, so as to avoid the damages of roadbed erosion, water damage and the like caused by unsmooth water discharging during the construction period of the expressway reconstruction and extension project. Therefore, the quality of expressway reconstruction and extension construction is ensured; and the routing table discharging system has the advantages of being simple in implementation, low in cost and convenient in dismounting.

Description

technical field [0001] The invention belongs to the field of road surface drainage during the construction period, in particular to a road surface drainage system during the construction period of expressway reconstruction and extension projects. Background technique [0002] With the rapid development of the national economy, the construction of expressways in our country is very rapid. Due to the constraints of social and economic level, technical level and construction ideas at the time of construction, most of the expressways that have been built and used are two-way four-lane expressways, and the proportion of six-lane and eight-lane expressways is relatively low. At present, a considerable part of them can no longer meet the requirements of traffic growth and social development, and there is an urgent need to expand road traffic capacity. As we all know, the rapid drainage capacity of the expressway is relatively low. When there is a strong rainfall process, there wil...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a road surface drainage system during the construction period of expressway reconstruction and expansion project, which is used to exclude the surface water of old road, the slope water of old embankment and the surface water of new embankment from the scope of the roadbed, aiming at solving the problem of existing high-speed During the construction period of the highway reconstruction and expansion project, the drainage system cannot effectively collect the rainfall falling on the old road surface, the old embankment slope and the surface of the new embankment and discharge it out of the roadbed smoothly, and cannot effectively avoid the problem of unfavorable drainage during the construction period of the highway reconstruction and expansion project

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