The Cable-stayed Bridge Construction Control Effect Of Fuzzy Comprehensive Evaluation

The bridge is the key part of all kinds of road construction. With all kinds of bridge traffic volume and traffic load of the country’s huge increase, the engineering quality must be greatly improved to meet the requirements of the current. In order to make the quality and safety of the bridge meet higher requirements, puts forward higher requirements on bridge construction monitoring. The present engineering construction is coarser, away from the safe request has the certain disparity, engineering problems tend to be more rough handling brought great potential safety hazard for engineering. Construction monitoring is to control the project progress and project quality key steps, which is critical. However, the current review of construction monitoring effect tend to rely too much on personal experience, gives a general qualitative evaluation results, evaluation is coarser. This article using the actual engineering data of construction monitoring effect to make more accurate quantitative analysis and combining the expert evaluation.The content of the study are in the below:(1)Article the application of the fuzzy mathematics theory in engineering field made simple introduction.In the construction monitoring of the research papers are rare,the thesis is a kind of exploration to this aspect research.(2)The authors have parsed the concept,model and procedure of AHP, established monitoring level indicators of a large-span bridge.The complex disorderly bridge structure monitoring evaluation object narrated and comb and demonstrate theeffectiveness and advantage of AHP in the practical.Of course also recommended his weakness of place and improvement.(3)The thesis recommend the fuzzy evaluation and mathematical theory and fuzzy assess of level and multistage, and based on uncertain analytic hierarchy to form comparison matrix.Using a pairwise comparison method of matrix calculate the largest eigenvector matrix, and the largest eigenvector corresponding characteristic value and then normalized evaluation object index weights are obtained.(4)Using two practical engineering cases:Guizhou six river super-large cable-stayed bridge and jiujiang two bridge bridge.The two bridge construction monitoring for fuzzy comprehensive evaluation,clearing hierarchy evaluation model.Refer to "The Bridge Bearing Capacity Checking Evaluation Rules" and "Highway maintenance technical specifications"It is divided into five different levels:very good, good, general, bad, very bad.Using functions calculate measuring point and the index membership degree in different levels.The lower level research object blurred and it is concluded that the upper index fuzzy vector.Lastly,we can gain the whole bridge fuzzy vector,then calculate the whole bridge assessment score.In evaluation of bridge construction monitoring to do some research, It applied mathematics theory study in the aspect.It will be beneficial to expand and deepen the study in the aspect of application.And it can also demonstrate this method can first play right in real life.