Wear Approach Road Drainage System. Under The Overpass

Our country's transportation construction development was in recent years rapid, each place all vigorously was constructing the road, intersected the place in the road and the railroad, constructed under the massive male iron to put on the grade separation path.The underway road had the construction cost economical, the frugal municipal administration path occupying a land area of, reduced the relocation and drafts the place few the expense, the noise pollution and so on the merits.But, each place has constructed the underway road, majority of in had not achieved by far when design age limit on already appeared each kind of serious coagulation earthen road pavement plant disease, its primary cause many for under the road sign and the road the drainage system jamming, the paralysis created.At present our country mainly concentrates in the draining water aspect research in the surface drainage system design aspect, not systematically carries on the system to the underway road from the road surface to the pavement structure level and the under-drainage system the research.This article creates the rainy season in view of the underway route in the surface drainage facility design to drain water not reasonably impeded influence traffic safety this malpractice, and unifies the domestic and foreign scholar's theory, analyzes the rain double-edged fine-toothed comb through the gutter inlet experiment to the gutter inlet discharging capacity influence, to the rain double-edged fine-toothed comb and the gutter inlet pattern as well as the gutter inlet position and quantity proposed the new design proposal, to the ground water elimination way, the underdrain establishment method proposed the reasonable improvement program, reduces the underway road the construction expense, improves the quality.Simultaneously improves instead filters the design, the seepage and the silt stops up the theory further to consummate, summarizes suits the national condition instead to filter with the silt stops up the criterion.Under the process construction massive computations and the construction test, can very good solution underway road's end questions and so on basic unit piping and erosion, and can effective reduce puts on the subsoil water level which the bridge connection primitive period encircles, has the high economic efficiency and the social efficiency.