Research And Bridge Structures Deflection, Linear Evaluation Methods Application Techniques

Bridge Deflection, linear structure is a reflection of the overall performance of a comprehensive index, ensure deflection, linear reliability of test results is an objective evaluation of the structural performance of the important prerequisite for this article to expand research and discussion on Bridge Deflection, linear evaluation methods and application of technology, The main contents include:①Describes the performance evaluation of the background of the bridge structure, meaning and purpose; The Status deflection, line testing, and evaluation methods and problems on this basis; discusses the deflection of the bridge structure, linear evaluation methods and application of technology research necessary sex;②Bridge structure for the displacement of the optical test methods, performance, test method for measuring the influence of the device on the test results of a systematic analysis and research, given different properties suitable for bridge equipment and testing methods, and put forward reasonable suggestions;③In summary Main Arch of several typical linear abnormal forms the basis to form the next fold scratch for the study, the use of Midas finite element model, by simulating the main arch of three typical linear flexible working conditions, the analysis of different parts of the linear anomaly, under different torsion values(a total of 16 sub-conditions) control section bearing performance of regularity and extent; explores mutation linear performance impact and the extent of structural span, loss of high relevance, induced mutation in a linear structure additional internal forces increased 20% for the control, presented the main arch linear need to be disposed of when the mutation is recommended control value;④Simply supported by continuous statistical analysis of four bridge-measured deflection calibration coefficients are given constant range corresponding bridge deflection test coefficient; numerical calculation methods, project examples, etc. The effects of deflection calibration coefficients factors ranging objectivity, describes a method of Long Span bridges small deflection measurements reliable multi station closed improve calibration method.