Empirical analysis of constructional quality of concrete structures in rural house based on AHP and fuzzy comprehensive evaluation
The assessment of the basic idea and technical details about the constructional quality of concrete structures in rural house based on the AHP and fuzzy comprehensive evaluation method are discussed. The assessment level system are designed according to the reference named the state standard “Code for acceptance of constructional quality of structures in rural house” which is compiling. Delphi-method, analytic hierarchy process and fuzzy comprehensive evaluation method are comprehensively utilized. The awareness and satisfaction in quality of the concrete structures in rural house about the managers and farmers are revealed. The satisfaction degree of the constructional quality of concrete structures in rural house belongs to the average. Concrete quality inspection, Concrete preparation and concrete casting should be focused on in the improvement process of constructional quality of concrete structures in rural house.
RESEARCH ON CONSTRUCTION QUALITY ACCEPTANCE OF SELF-HELP HOUSING OF RESIDENTIAL AREAS IN VILLAGES
At present,The self-help housing and the residential areas are two types of self-help housing with farmers in villages.It is a matter of concern that how to carry out for construction quality acceptance.Through field research,The construction quality acceptance of the self-help housing of residential areas in villages of Shigang town of Jiangsu were summarized.The existing problems were analyzed.Basic research have been carried out for a better quality acceptance of uniform standards.
MULTIPLE-INDEX ASSESSMENT FOR GLOBAL STABILITY OF HIGH-STEEP ROCK SLOPE OF THE THREE GORGES PROJECT PERMANENT SHIPLOCK
It is a controversial problem to assess comprehensively the global stability of high-steep rock slope of the Three Gorges Project permanent shiplock. The information on slope stability includes geological data, results of numerical analysis,measuremental data,experiential knowledge,and so on. Therefore,a suitable analytical methodology of system engineering integrating the comprehensive qualitative and quantitative information is needed. A multi-index system and model,which is able to evaluate comprehensively the global stability of high-steep rock slope by using extension theory,is proposed. The qualitative grade and quantitative degree for the global stability of high-steep rock slope by the index system and model can be obtained. The slope stability can be assessed dynamically. Analytic Hierarchy Process method has been used to compute the subjective weights of evaluation indexes. The objective weights can be obtained by calculating the relational degree between evaluation indexes and grades with extension theory. By combination of the views of both the subjective and objective weights,an optimization theory has been used to calculate the weights for index evaluation. The results have shown that for the high-steep rock slope of the Three Gorges Project permanent shiplock,its grade and degree of global stability are 1 and 1.86,respectively. Then the global stability can be ranged between excellent and good. The numerical example has shown that the proposed method is feasible and effective,and the evaluation results are reasonable. In addition,this method can also be used to assess dam health,rock quality,and dam aging.