Research On Security Evaluation Of Ground Anchored Pedestrian Tourist Glass Suspension Bridge

With the continuous development of the national economy,the construction and the later operation of the bridge also put forward higher requirements,and pay more attention to the normal function,safety and durability of the long-span bridges.As a branch of the bridge system,the pedestrian suspension bridge has developed rapidly in recent years,especially in the central and western mountainous areas and canyon areas.However,at present,the attention of pedestrian suspension bridges is far less than that of other types of bridges,and the related researches on scenic sightseeing suspension bridges are relatively limited.The main content of the full-text study is the safety assessment of anchored pedestrian suspension bridges.In this paper,based on a detailed introduction of the basic structure and characteristics of ground anchored pedestrian suspension bridges,from a general to a specific research method,a special case: a pedestri an scenic glass suspension bridge in a scenic spot as the research object,from the perspective of pure structure,management methods These two aspects comprehensively assess the safety of ground anchored pedestrian glass suspension bridges.The safety eva luation of active bridge structures is analyzed from the perspective of pure structure,and the safety of existing bridge structures is evaluated in three aspects: site inspection and appraisal,static performance analysis,and wind resistance performance analysis.The evaluation of the safety of the bridge structure after reinforcement is started from the perspective of management theory.It is the combination of the basic theory of the fuzzy analytic hierarchy process to establish a comprehensive assessme nt model for evaluation.The contents and conclusions of the article are as follows:(1)The development history of suspension bridges at home and abroad was systematically analyzed,and the basic structure and characteristics of the general anchor suspension suspension bridges were introduced in detail.This will lay the foundation for the study of this special case of a pedestrian suspension bridge.At the same time,the development process of fuzzy analytic hierarchy process is introduced.(2)To introduce the basic theories used in this paper.On the one hand,the safety assessment theory and reinforcement theory of pedestrian suspension bridge are introduced.On the other hand,the basic principle of fuzzy analytic hierarchy process(fuzzy analytic hierarchy process)is introduced,and the two concepts of trigonometric function and membership function in the theory are introduced,and the concrete steps of comprehensive evaluation by fuzzy analytic hierarchy process are detailed.(3)The safety assessment of the suspension bridge in active service is carried out,and in combination with the original data of the bridge,a detailed and comprehensive assessment is made from the three aspects of field inspection,static performance evaluation and wind resistance evaluation.(4)The safety assessment results show that the safety of the pedestrian suspension bridge can not meet the relevant specifications.In view of the problems found in the evaluation,a comprehensive reinforcement and reconstruction of the bridge is carried out,and the key points in the reinforcement design,the reinforcement and reconstruction and the later operation are introduced.(5)Starting from the basic theory of fuzzy analytic hierarchy process and referring to the evaluation system of other bridges,a comprehensive evaluation model for the suspension bridge of this man is established,and a comprehensive comprehensive evaluation is made on the situation after the bridge is strengthened and reformed.The results show that the performance of the bridge is excellent after the bridge is strengthened and reformed.The safety appraisal,reinforcement and reconstruction of the suspension bridge of the active service,and the comprehensive evaluation of the suspension bridge are involved in the interdisciplinary,comprehensive and complex research.In this paper,the safety assessment process of pedestrian suspension bridge and the comprehensive evaluation after reinforcement and reconstruction have certain reference significance for similar bridge projects.