1、Water Resources and Hydropower Engineering Construction Design Layout Key words construction layout Fuzzy multiple attribute decision making Water Resources and Hydropower Construction Abstract Analysis of affecting factors of the construction layout program characteristics that people value in iden
2、tifying these indicators fuzzy constraints are difficult to give exact values, while decision-making process has been one of psychological, subjective will and the work experience and other aspects influence decision-making process and therefore there is certainly ambiguity 1, Water Resources and Hy
3、dropower Engineering Construction Layout Factors Construction advantages and disadvantages of the general layout scheme, involving many factors, from different angles to evaluate the evaluation factors generally have two categories, qualitative factors, and quantitative factors of a classQualitative
4、 factors are mainly: 1Favorable production, easy to administer, facilitate the degree of life; 2During the construction process, the degree of co-ordination; 3The principal impact of construction and operation; 4Meet the security, fire, flood prevention, environmental protection requirements; 5Tempo
5、rary Works and the combination of permanent works and so onIndicators are mainly quantitative factors; 1Site preparation earthwork quantity and cost; 2. The extent of use of earth excavation; 3Temporary works of construction work quantity and cost; 4Workload and a variety of materials, transport cos
6、ts; 5Size and cost of land acquisition; 6Made to the area to field, the recovery or recycling construction fees As the construction is construction planning layout content, is that people under work experience, combined with engineering data on the occurrence of a future prediction aboutTherefore, b
7、oth qualitative factors, and the quantitative factors, there is uncertaintyWe know that the uncertainty of two different forms; one is uncertain whether the incident occurred in 11 random, the event itself the state of uncertainty 11 ambiguityRandomness is an external cause in general uncertain, but
8、 ambiguity is an inherent uncertainty of the structureFrom the information point of view, the randomness involves only the amount of information, while the ambiguity is related to the meaning of informationWe can say that ambiguity is more profound than the randomness, the uncertainty more generally
9、, especially in the subjective understanding of areas of role ambiguity is much more important than the role of randomnessRandom people for a lot of research has been carried out, achieved fruitful results; while ambiguity was ongoing and in-depth knowledge and research in theAll people involved in
10、the system, carried out by people planning, feasibility studies, evaluation of decision-making, design and management, and therefore, can not ignore the objective world of things in the human brain, one by one to reflect the uncertainty of ambiguity, it is an objective difference intermediate divisi
11、on caused by the transition of a kind of uncertaintyConstruction Layout Design is no exception, in the arrangement of construction there are a large number of objective fuzzy factorsFor example, the construction of facilities, coordination between the levels of good and general is an accurate value
12、can not be describedTherefore, the arrangement can not ignore or avoid the construction of the fuzziness existing in the process, but should be objective and deal with ambiguity of this objective, understand the rules for people planning, demonstration, evaluation and decision, design and management
13、 to provide a scientific basis and methods As the construction layout of the content involved in more programs fuzzy factors exist, the traditional construction arrangement he considered the existence of ambiguity, but in decision-making process has fuzzy information precision, not a real fuzzy opti
14、mizationTherefore, the program should focus on optimization of fuzzy factors into account, the ambiguity should be reflected in the decision-making on the index, index weightsFor quantitative indicators, mainly the amount and cost of the project issues, its value can be found in engineering material
15、s and design documents to determine by calculation, the results are the values of the parameters and experienceAs every engineers understanding of things is not the same experience in a certain range of parameter changes, the results also in a certain rangeFor qualitative indicators, according to ex
16、perts, engineering experience, through expert scoring method, set the value of statistics to determineSuch subjective factors, the knowledge structure and decision-making preferences play a major roleBut in practice, due to the complexity of objective things and the peoples thinking on the use of fu
17、zzy concept, to describe with precision the number becomes very difficult, but with some, left and the like get fuzzy concept to describe the more reasonableDetermine the weights of evaluation indexes, there are many mathematical ways to determine the accurate calculationWe know, for different proje
18、cts, in the same factors, their importance is not the same, then the mathematical model is difficult to fully reflect the actual situation, the help of experts in engineering experience must be judged Since the existence of the above ambiguity, avoid or ignore the ambiguity is unscientific, incomple
19、tePrevious index value that decision-making, decision weights for programs for determining the value of the preferred method, there is bound to sidedness and limitationsAs technology develops, people are increasingly demanding of precision, the object of study become more complicated, as complicated
20、 to some degree after the meaning of the precise cognitive declines and the appropriate fuzzy but accurateHere, the introduction of fuzzy mathematical tools, the use of modern fuzzy multiple attribute decision making theory, Fuzzy multiple attribute decision making model, can exist for people to con
21、sider the ambiguity of the objective, to provide strong support for rational decision-making 2, Water Resources and Hydropower Engineering Construction Design Layout Construction Layout as a focus of the system around the concrete layout of the temporary structuresThere are 1All kinds of storage, st
22、ockpile and Spoil; 2Mechanical repair system; 3Metal structure, mechanical and electrical equipment and construction equipment installed base; 4Wind, water and electricity supply systems; 5Other construction plant, such as steel processing, wood processing, prefabricated factory; 6Office and living
23、space, such as offices, laboratories, dormitories, hospitals, schools, etc.; 7Fire safety facilities and other, such as fire stations, guard, and security cordon soAt this time, various types of temporary structures should be put forward, the construction of facilities furnished a list of partial pr
24、essure, their area, building area and volume of construction and installation; on fertilization with an estimate of land acquisition, land area and the proposed land use plan, the study to reclaiming land in the use of the measures, site preparation earthwork volume calculations, the integrated cut
25、and fill balance of the proposed excavation of the use of effective planning Construction of facilities in order to avoid conflict between the layouts, construction of facilities in the analysis of adjacency relations, is to analyze the relationship between the construction of facilities, strength o
26、f correlation and relationshipUsually based on the adjacency relationship, consider the construction schedule, construction strength, facilities operation and logisticsAnalysis of the size and layout of the construction of facilities present at the location of the ground between the site controlled
27、the indicators are: 1The scale of construction facilities layout, the main considerations to meet the construction requirements of the case, the construction of facilities, capacity and layout area2Foundation bearing capacity of the construction of facilities to consider geology, slope stability and
28、 so on3Hydrological requirements and construction guide closure of the case, consider the different construction periods, flood, water table, water level changes in the construction site layout planning of construction restrictions and impact4. The height difference logistics constraints, considerin
29、g logistics and vertical elevation gradient lines, logistics of import and export5Construction of the distance between these facilities and restrictions, mainly refers to the construction of facilities necessary for running the minimum operating radius, the minimum limit transportation question, min
30、imum import and export logistics, construction and facilities, the safety distance between6Construction site area of internal and external traffic conditions, construction equipment, consider the minimum safe height and width of the transport, building materials inside the transport requirements To
31、be concrete system facilities arranged in a prominent position, so that interference by the other facilities as small as possible, the need for construction of facilities at this time analysis of the relationship between the adjacent, as many facilities for Hydropower Construction, different facilit
32、ies have a clear focus on functionality, such as depots, gas stations, etc., if not for the neighbor relations analysis, because the construction of facilities for the inter-functional conflict, construction and project management to bring incalculable damage and safety hazards buried References: 1
33、Lu Yu Mei editor of the Three Gorges Dam Construction M. Beijing: China Electric Power Press, 2003 2 Wei-Jun Zhu, Zhang Xiaojun and so the overall layout design of the Three Gorges Project Construction J. The people of the Yangtze River, 2001.32 10 :4-5 译文:水利水电工程施工的布置方案设计 关键词施工布置 模糊多属性决策 水利水电施工 论文摘要分析施工布
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