An optimization design method of rainwater pipe network based on usrams

Abstract

An USRAMS-based optimization design method of a rainwater pipe network belongs to the crossing field of drainage pipe line design and hydraulic models. Aiming at the imperfection of the rational formula method and the requirements of the new version Outdoor Drainage Specifications, the invention is based on rainwater pipe network design data to establish a USRAMS rainwater pipe network hydraulic model; kinematic wave is adopted for simulating calculation; pipe section overload is used as the verification standard according to the model results; the design scheme is optimized according to the model results so that the reliability of rainwater pipe network design is increased. The number of required parameters is less and the parameters are easy to obtain; the runoff coefficient and the water catchment time can be directly obtained; the process of establishing models is simple and quick; the model results are reliable; the applicability of the method is guaranteed; the method has operability; complicated programming is not required; steps can be finished by means of present software; the operation is simple and easy; the feasibility of the invention is guaranteed.

Description

technical field [0001] The invention relates to a USRAMS-based rainwater pipe network optimization design method, which belongs to the intersection field of drainage pipe network design and hydraulic model technology. Background technique [0002] The rainwater system design in my country has long used the reasoning formula method combined with the constant uniform flow theory to design and calculate the pipe network. Due to the limitation of its own applicable conditions, this method is only suitable for the design of small areas. When it is applied to large catchment basins, Its calculation accuracy is low. The new version of "Code for Design of Outdoor Drainage" (GB 50014-2006) stipulates that when the catchment area exceeds 2km 2 , the mathematical model method should be used to check and adjust the rainwater design scheme. With the release of the new version of the outdoor drainage code, model technology has begun to be promoted in my country, such as MIKE URBAN of the...

AI Technical Summary

Problems solved by technology

When using kinematic wave calculation, the water surface slope of the pipeline is equal to the bottom slope of the pipeline, and the maximum flow that can be transported through the pipeline is the value of the normal water flow at full flow of the pipeline. This form of calculation does not consider the influence of backwater, inlet / outlet loss, and water flow. Reverse or pressure flow, also limited to dendritic network layouts

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