Dissertation > Excellent graduate degree dissertation topics show

The Multi-objective Optimization Design Research of City Stormwater Network

Author: WangHeZuo
Tutor: YouXueYi
School: Tianjin University
Course: Environmental Science
Keywords: stormwater network multi-objective optimization design cost overflow
CLC: TU992
Type: Master's thesis
Year: 2012
Downloads: 157
Quote: 0
Read: Download Dissertation


The optimization design of stormwater network is currently carried out by considering of only the construction cost or hydraulic performance. A method of multi-object optimization design is presented. As an example, the method considering the cost and overflow as the optimization object is studied by the optimization algorithm and simulation software. After determining the weight of cost and overflow according to the design purpose, the best scheme is picked out. The main results are:(1)According to Tianjin municipal engineering budget price of 2008,the cost functions of stormwater pipe and manhole are fitted out by using the genetic algorithm. A complete objective cost function of network is obtained to provide cost optimization.(2)Based on the principle of graph theory, the complex structure of stormwater network is represented by correlation matrix. The hydraulic parameters of different schemes are obtained by making use of hydraulic model and the planned flow, origination buried depth and length of pipe.(3)The optimization is processed by emumeration algorithm. By satisfying the optimization of the branch pipes and main pipes at the same time, five low-cost schemes are found by applying global search. The costs are 10.13%、9.47%、6.25%、5.57% and 4.82% lower than the planning scheme, respectively.(4)The stormwater network hydraulic model is established by making use of SWMM and the overflow of the above five network structure for nine return periods are determined. The risk of overflow of every structure is obtained.(5)The change of overflow compared with planning scheme of different pipe network structure is quantitatively estimated. By considering the probability of return period in Tianjin, the percentage of comprehensive overflow changes of different schemes is got. Determining the weight of cost and overflow according to planned targets, a variety of optimization schemes are provided.The optimization algorithm combined cost and hydraulic model is used to choose the best scheme. The study puts forward the theory of multi-angle optimum design for the optimization design of city stormwater network.

Related Dissertations

  1. K Company’s Improving Planning and Forecasting for the Reasonable Allocation of Inventory,F224
  2. Research on Scheduling of Whole-set Orders in JSP Based on Differential Evolution Algorithm,F273
  3. Development of the Platform for Compressor Optimization Design and Aerodynamic Optimization Design in the Transonic Compressor,TH45
  4. Investigation of Turbine S2 Stream Surface Direct Problem Aerodynamic Optimization Design,V235.11
  5. Xinjiang Oilfield Ground Construction Cost Indicators and Management Information System Study and Application,F284
  6. Cost-Benefit Analysis on Management Practices of Agricultural Non-Point Source Point Source Pollution in Yixing,X592
  7. H chemical enterprises cooling loop quality control,F426.7
  8. The Dynamic Performance Analysis of Oil Pumping Center and Structural Optimization of Improvement,TE933.1
  9. The Research of Enterprise-enviromental Cost Management,F275.3
  10. The Research of Land-Use Optimization Approach Based on Non-Point Source Pollution Controlled,X24
  11. Finite Element Analysis and Optimization Design of a Tractor Cab,S219.02
  12. Power and interests as defined in national strategy,D80
  13. Vocational Training Base Construction Project Cost Control,G712.4
  14. Research on Subsea Pipeline Repair Coupling,TE973
  15. Investigation and Analysis on the Current Situation of the Selection of Raw and Formula of for Plant-Scale Composting,S141.4
  16. Mining resources based on genetic algorithm optimization model of,O224
  17. Qinghai Oilfield optimal allocation of production costs,F406.72
  18. Study of Multiple-Objective Decision of Coal Mine Enterprise Production Quotas Based on Fuzzy Theory,F426.21
  19. Optimization of Self-propelled Trailing Suction Hopper Dredger Mining System,U674.31
  20. Study on Optimal Allocation of Regional Water Resources Based on PSO,TV213.4
  21. Research on DSP-based Auto-focusing Systems,TP391.41

CLC: > Industrial Technology > Building Science > Municipal Engineering > Drainage works ( ditches works,sewer works)
© 2012 www.DissertationTopic.Net  Mobile