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Urban rainwater pipeline design method

A design method and rainwater technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as slow convergence speed, easy to fall into local optimum, etc., achieve fast convergence speed, solve slow convergence speed, and good numerical stability. Effect

Inactive Publication Date: 2006-06-21
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology

The present invention is based on the basic genetic algorithm, and by changing the termination condition of the previous genetic algorithm, an improved new method for deriving the rainstorm intensity formula is formed, which effectively solves the problem of the basic genetic algorithm being slow in convergence and easy to fall into a local optimum It is an optimal problem, and has the characteristics of fast convergence speed and good numerical stability.

Method used

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  • Urban rainwater pipeline design method

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Embodiment Construction

[0033] Such as figure 1 As shown, the design method of this urban rainwater pipeline 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 Store in the hard disk, and determine the size of the remaining space of the hard disk according to the different years of the original rainfall data, generally not less than 20M; Data sorting in the processor CPU, due to the need for computing speed, in principle requires a Pentium 3 or higher processor; 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 Store the i-t-P table in the hard disk for use; 4. Invoke the "Constraint Stable Convergence Acceleration Genetic Algorithm Program" through the computer central processing unit, and calculate the existing i-t-P table, and then deduce the urban rain...

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Abstract

The invention discloses a design method of urban rainfall pipe, which comprises the following steps: 1. inputting the urban rainfall primitive data in the computer at the database or test pattern; 2. calling the primitive rainfall data from hard disk to CPU to finish the data; 3. proceeding frequency analysis of disposed data to obtain the i-t-P list; 4. calculating the i-t-P list through calling the 'confining stable convergence accelerating genetic algorithm program' by computer; obtaining the urban storm strength formula; 5. calculating the urban rainfall pipe diameter according to the storm strength formula. The invention provides the new calculation method, which solves the problem of slow convergence speed based on genetic algorithm.

Description

technical field [0001] The invention relates to a design method of urban rainwater pipelines, in particular to a method for calculating the important design parameters in the pipe diameter design of urban rainwater pipelines by using a constrained stable convergence acceleration genetic algorithm-the urban rainstorm intensity formula. The improvement of the traditional calculation method of the rainstorm intensity formula 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 Applications(China)
IPC IPC(8): G06F17/50G06N3/12
Inventor 傅金祥林齐
Owner SHENYANG JIANZHU UNIVERSITY