Development Of Low Impact Development Stormwater System Software In Green Building And Community

The government encourage us to build sponge city based on the hydrological calculation and simulation of low impact development facilities to solve the problem of increasing impervious surface and flood disasters caused by urbanization.A low impact development design software for small scale of the building and community is developed.It's a combination of GIS spatial analysis and SWMM hydrological and hydraulic calculation on the Microsoft Visual Studio platform in the c # languageThe new design software has realized the innovative function which is not included in SWMM:(1)The hydrological parameters based on the terrain anlysis can be calculated automatically.The accuracy of the model parameters and the efficiency of model development are highly improved(2)The function of hydraulic pipeline auto calculation is realized.The problems of traditional pipeline hydraulic calculation,poor precision and Complex computational process are sovled.(3)The pipe network topology check and correction can be carried out automatically which is the key to solve the pipe network topology problem.(4)The local LID parameter database is embed into the software.(5)The function of display the simulation process and the results is enhanced which is more intuitive and vividThe residential rainwater pipeline hydraulic calculation design,low impact development design,parameter calculation,simulation analysis,assignment of rain and flood inundation analysis,drainage facilities' efficiency evaluation,figure and table dynamic output can be performed through the software.The efficiency and accuracy of modeling and the applicability of the project is improved.The simulation analysis of green building and urban runoff control is efficiently realized.The software functions are validated through two engineering examples.The low impact development model is built successfully through the software in the demonstration project in Shenzhen,what's more,the effectiveness of the low impact development facilities treating rainfall-runoff is evaluated synthetically.The results show that the software can be use to bulid rainwater model and design low impact development facilities.The diameter of the rainwater pipe and the pipe slope are calculated atomatically by software iterations in Chongqing Yuelai city.The results is basically the same as the traditional manual calculation which confirm the automatically design function.The high accuracy and reliability simulation results show that the software can be used to assist the design and evaluation of rainwater pipeline network and low impact development measures.