Research on Evaluation of Sliding Performance of Supports Based on Beam End Displacement
Sliding girders are important components of long-span suspension bridges,regular evaluation of their work status is required.Regular manual testing has long cycles and subjective results,making it difficult to make real-time and quantitative evaluations of the status of girders.There is an urgent need for effective methods to e-valuate the status of girders in real time.The displacement variation law of the beam end characterizes the health status of the sliding performance of the bridge girders.The operational performance of the girders can be evaluated based on the longitudinal displacement of the beam end and the temperature of the main beam collected by the health monitoring system during bridge operation.This article is based on the monitoring data of beam end displace-ment and environmental temperature in the bridge health monitoring system.Through correlation analysis,the slid-ing performance of the girders is evaluated in real time,and abnormal sliding situations are timely warned.The e-valuation method for the sliding performance of the girders is simple and practical,and has high industry reference value in the operation and maintenance of long-span suspension bridge girders.
NETL
NSTL
万方数据
维普
