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| Service Performance Evaluation of High Speed Railway Long Span Bridge Based on Healthy Monitoring |
| SHI Zhou1，PU Qian - hui1，YUEQing2 |
| (1. Southwest Jiaotong University，Chengdu，Sichuan 610031，China; 2. China Railway Major Bridge Reconnaissance TDesign Group Co. Ltd，Wuhan，Hubei 430050，China) |
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Abstract Abstract ： Research purposes ： The bridge structural healtli monitoring technology continues to develop，however，it still has difficulty in damage identification and performance evaluation based on the healthy monitoring data. According to the problem of performance evaluation of Dashengguan Yangtze River Bridge based on the healthy monitoring system，the service performance evaluation method and its detailed indexing system of the bridge based on healthy monitoring data were analyzed. Research conclusions:(1) Based on the results of detailed static，natural vibration and transient dynamic responses， the evaluation methods includes direct evaluation of measured parameters，the variation evaluation of the parameters， and comprehensive evaluation were put forward. ( 2 ) The healthy monitoring data were used to direct evaluation and variation evaluation， the results show that the maximum acceleration value - 121. 54 mm/s2 were smaller than the calculation， normal and safety limited value; the maximum ratio of variation value and variance is 0. 628， so the vibration and the variation of vibration of the bridge are both fairly low and the comprehensive evaluation conclusion “ excellent)，“ no damage” were received. ( 3 ) The suitability of evaluation indexing system as well as the fairly well vibration characteristics of Dashengguan Yangtze River Bridge were verified， and the method can provide certain references to other similar bridges.
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Received: 16 June 2016
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2017, Vol. 34 
