| At present, traditional design method for the our country city pipeline planning and design are mostly rely on designers designProject experience, subjective interference, resulting in the quality of uneven, some good and some bad design results. Control comprehensive planning city pipeline design Meter level is the bottleneck in city pipeline comprehensive planning and design techniques. This paper takes Ji’nan city as a case, aiming at the key problem of city pipeline planning and Design--design, synthesis of planar planning city pipeline city road design, integrated vertical planning intersection line city underground pipe ditch into the ditch pipeline scheme selection and comprehensive planning of city pipeline preparation progress technology, combined with the layout optimization and design theory, city engineering facilities optimization theory, computer aided design of two language development and operations research, gray system and other relevant theories, the key techniques were studied, and put forward the optimization design and management of Ji’nan city pipeline planning measures and solutions.(1) City line is a comprehensive design of city road cross section tube. The original design methodology focuses on the qualitative analysis, experience design, this paper presents the method of multiple objective programming construct objective function create comprehensive pipe road cross section position optimal, with virtual target and weighted linear combination of two methods of operations research software Lingo12for the optimal tube position combination. The effectiveness and verified method.(2) City road crossing vertical pipeline comprehensive planning and design is the focus and difficulty of the work of city pipeline comprehensive planning and design. Based on analyzing the design results of traditional design methods of pipeline inflection point too many problems, a new method of "put forward the point-of-line" analysis method can reduce the number of road crossing pipeline inflection point, shorten the design cycle, improve the design efficiency of integrated vertical city pipeline. And the crossing vertical pipeline comprehensive spacing inspection work carried out Visual programming language based on Lisp computer aided design.(3) City underground pipe ditch into the ditch pipeline scheme selection is the main problem in the design of integral pipe trench. The Integrated into the trench of the pipeline type is numerous, determine the pipeline into the trench scheme needs to consider the economic, technology, Multi factor XI Quan and daily maintenance and management. By sorting the enumeration, and the use of DHGF (Delphi-Hierarchy-Grey-Fuzzy) evaluation method into the ditch pipeline scheme can make quantitative analysis on this problem effectively, and choose out the optimum combination scheme into the ditch pipeline.(4) Because the city pipeline comprehensive planning and design involves multi specialty, multi unit, coordination of pipe in the design process Science is a very important problem. Therefore, it is proposed to use PERT (Program Evaluation and Review Technique) Schedule optimization model of pipeline comprehensive planning and design, strengthening the collaborative design, improve design efficiency, shorten design week Period. |