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Urban rainwater pipeline design method

A technology of rainwater and pipelines, applied in calculation, special data processing applications, instruments, etc., can solve the problems of heavy calculation workload, slow convergence speed, poor accuracy, etc., and achieve the goal of improving calculation accuracy, increasing calculation speed, and fast calculation speed Effect

Inactive Publication Date: 2008-07-16
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology

As the core of rainstorm intensity prediction is the urban rainstorm intensity formula, the traditional establishment of the urban rainstorm intensity formula is generally based on the local meteorological station (station) self-calculated rainfall data, using statistical calculation methods to determine, there are time-consuming, laborious, poor accuracy, and many statistical data and the disadvantage of large computational workload
[0004] In the derivation process of the rainstorm intensity formula, the traditional method has problems such as difficulty in direct optimization or large fitting error
In order to provide an advanced and reliable method for quickly and accurately establishing the formula of urban rainstorm intensity, many people have proposed the general process of using genetic algorithm to solve the parameter optimization in the calculation of urban rainstorm formula in recent years, but most people only pay attention to the form of genetic algorithm , without really considering the problem from the essence of the genetic algorithm, so there is a problem of slow convergence and easy to fall into local optimum

Method used

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Embodiment Construction

[0036] Such as figure 1 As shown, this method of designing urban rainwater pipelines includes the following steps: 1. Use a computer that can support Visual Basic 6.0 to manually input the mastered urban rainfall raw data into the computer in the form of a database or text, and Stored in the hard disk, the size of the remaining space of the hard disk is determined according to the number of years of the original rainfall data, generally not less than 20M; 2. Call the original rainfall data in the hard disk to the RAM of the computer memory, apply the data processing function of the computer itself, and process it in the central Data sorting is carried out in the processor CPU. Due to the need for computing speed, in principle, a Pentium III or higher processor is required; 3. Perform frequency analysis on the data after preliminary processing to obtain an i-t-P table, which is transmitted to the computer terminal display, and The i-t-P table is stored in the hard disk for use;...

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Abstract

The invention discloses a design method of urban rainfall pipe, which comprises the following steps: 1. using the Visual Basic 6.0 computer to input the urban rainfall primitive data in the computer at the database or test pattern; 2. calling the primitive rainfall data from hard disk to internal memory RAM to do data arrangement in the CPU; 3. proceeding frequency analysis of disposed data to obtain the i-t-P list; conveying the i-t-P list to the terminal display; 4. calculating the i-t-P list through calling the 'genetic algorithm program'; obtaining the urban storm strength formula; 5. calculating the urban rainfall pipe diameter according to the storm strength formula. The invention adapts local random searching technique to take the minimum formula mean square deviation as the object function, which improves the counting speed and calculation precision.

Description

technical field [0001] The present invention relates to a method for designing urban rainwater pipelines, in particular to a method for calculating the important design parameters in the diameter design of urban rainwater pipelines using genetic algorithms - the method of the urban rainstorm intensity formula, which is an answer to the urban rainstorm intensity formula The improvement of the traditional calculation method belongs to the field of municipal drainage and computer application technology, and can be widely used in the calculation of the urban rainstorm intensity formula and the diameter design of urban rainwater pipelines in various regions. Background technique [0002] The trend of the current urban drainage system is the diversion system. That is, sewage and rainwater are collected and transported by sewage pipes and rainwater pipes respectively, sewage enters urban sewage treatment plants, and rainwater is directly discharged into water bodies. Therefore, th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06N3/12
Inventor 傅金祥林齐
Owner SHENYANG JIANZHU UNIVERSITY
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