Three comprehensive security warning method of bridge structure

The present invention discloses a method of three integrated security warning bridge structure, safety monitoring technical field relates to the bridge structure. The method uses a safety margin alarm, and the alarm correlation smooth Three Syntheses warning alarm mode, specifically: 1) to identify specific monitoring points and bridges some monitoring data related to the test of the tested safety of the bridge structure; 2) i determination for monitoring data before analysis in alarm; 3) is divided by a certain time interval and the statistical monitoring data monitoring points, and calculating the mean data at each time period; 4) determination of i + 1 j-th time period is a time period to be analyzed; 5) safety margin alarm; 6) stationary alarm; 7) alarm correlation; 8) of the bridge security alarm conditions corresponding to various processes. The present invention provides an effective evaluation index of bridge safety margin of safety, stability, relevance three angles, the establishment of three integrated bridge system security early warning mechanism, providing an important reference for the maintenance of the bridge.