Table Highway Road Drainage System Of The Research Methods

In this paper, based on the research of the highway road drainage method, the basic composition of drainage system are analyzed, to determine the section water, rain water flow rate, runoff coefficient, rainfall intensity formula. At the same time, this paper, by using the empirical formula, theoretical analysis of mathematical study of open drain the ability of calculation, and use the data needed for the test of its correction. Using numerical simulation method to solve the problems of the centralized drainage, analysis of the flow rate and closure rate under different conditions such as variable, and then using the side weir flow formula, weir flow and orifice flow formula respectively on different forms drain for further theoretical analysis, the use of numerical simulation method to modify the results before, get the following conclusion:1?The composition of the highway road table waterproof and drainage system are analyzed and the pavement surface waterproof and drainage related main points of the design parameters.2?Is proposed in this paper in the highway road not collect water and highway longitudinal slope under the condition of slower, you should use flood flow and drainage facilities, and gives a reasonable formula for calculation of water flow and depth.3?In the design of side ditch drainage, under the same displacement, should be set V drainage ditches. Second consider the presence of LanShui belt, if you have any LanShui belt, should set up the triangle of drainage ditches; Without LanShui belt, should set the type of plating or semicircle drainage ditches.4?Side weir flow formula in this paper is to calculate the open drain length calculation formula can be used as a certain length of drain in the intercepting rate estimate formula, but when the longitudinal slope is less than 0.06, to the calculation results are superior to the correction coefficient of 1.3?1.05,the smaller the longitudinal slope, the greater the coefficient values; When the longitudinal slope is greater than or equal to 0.06, you do not need to change.5?This article through to the calculation of highway drainage ditch water flow, trench allows the minimum flow, maximum flow velocity, coupled with the combination of trench layout types, ditch drainage facilities in different conditions is given.6?Using experience formula and theory analysis, this paper analyses the drain drainage capacity study. At the same time for the first time by using the method of the numerical simulation of continuous slope section of the intercepting rate of numerical simulation, presents a revised open drain of intercepting rate calculation formula.