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The traditional response of pavement structures are difficult to obtain road test vehicle load and environmental factors in the coupling of the actual situation by force, unable to asphalt pavement structural design methods, and evaluation of pavement performance data support. The pavement structure information to achieve timely collection, processing and analysis, not only to verify the pavement structure design and calculation of results, to ensure the unity of design and physical engineering, but also can analyze the internal structure of asphalt pavement response decay law, to clarify the mechanism of asphalt pavement damage , estimated pavement life, then put forward a reasonable road maintenance program. In this paper, pavement structure for common diseases form analysis to determine the characteristics of different types of damage, evaluation indicators and key positions, optical fiber sensing technology based road dynamic response information monitoring system design and implementation. Then, based on the current progress of the work, for pavement fatigue cracking, combined with the interior material fatigue performance evaluation, the actual pavement fatigue life prediction preliminary study. First, the structural dynamic response of a typical asphalt pavement monitoring system design, field implementation, and preliminary analysis of the data rule. Analysis of pavement damage phenomenon common causes and characteristics, combined with asphalt pavement design and evaluation methods of research, to determine the impact of key parts of the pavement structure to monitor and test indicators; sensors for different types of works, uses, and be buried parts of the sensor is buried technology research, design, and implementation of the monitoring system laid some work; carry out part of the road construction site response measured results of the preliminary analysis, the analysis of different speeds, different vehicle weight and the different pavement layers at the surface response rule. Secondly, based on small-scale tests with different indoor test means strain comparison of test results and analysis. Based on strain gauge sensor test principle and influence factors analysis, development in the rut resistance strain gauges embedded specimens of craft, complete with fiber optic sensors based on strain gauge testing two different techniques of rutting test, to establish the return of two test methods relationship; interior beam specimens with three point bending test method for testing the resistance of the strain gauge beam bottom bending strain strain compared with the theoretical information, create a sensor calibration test formula. Finally, the problem of fatigue failure of asphalt pavement, pavement structure based information pavement modulus decay preliminary study on fatigue life. Three-point bending fatigue tests carried out indoors, the establishment of pavement material fatigue equation, combined with the measured dynamic response of pavement information given test section pavement fatigue life prediction method.
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