Progressive type method for identifying loose supporting ropes based on space coordinate monitoring during support settlement

Abstract

The invention relates to a progressive type method for identifying loose supporting ropes based on space coordinate monitoring during support settlement, which is based on strain monitoring and is used for identifying the loose supporting ropes by monitoring the coordinates of a support of a structure. In consideration of the condition that a linear relationship among the vector of the current numerical value of the quantity to be monitored, the vector of the initial numerical value of the quantity to be monitored, a change matrix of the numerical value of the virtual unit damage quantity to be monitored and a current nominal virtual damage vector is approximate, the invention provides a method using the linear relationship to sectionally approach to a nonlinear relationship in order to overcome the defect, virtual damaged ropes can be identified, and the residual virtual damaged ropes are just the loose supporting ropes after a true damaged rope is distinguished from the virtual damaged ropes by using the methods of nondestructive examination and the like, so that the rope length which needs to be regulated can be determined according to a relationship between the looseness degree and the virtual damage degree.

Description

technical field [0001] When there is support settlement, the present invention recognizes the cables to be adjusted in the cable system (referring to all supporting cables) of cable support structures (especially large cable structures, such as large cable-stayed bridges and suspension bridges) based on the monitoring of spatial coordinate equivalents. The supporting cable of force is given, and the specific adjustment amount of cable length is given, which belongs to the field of engineering structure safety. Background technique [0002] The cable system is usually a key component of cable structures (especially large cable structures, such as large cable-stayed bridges and suspension bridges). Due to relaxation and other reasons, the cable force of the supporting cables usually changes after a period of time after the completion of the new structure, and the structure has been in service for a long time. Later, the relaxation of the supporting cables will also cause chang...

AI Technical Summary

Problems solved by technology

[0003] Changes in the health status of the supporting cable system (such as slack, damage, etc.) will cause changes in the measurable parameters of the structure, for example, the spatial coordinates of the cable structure will change. In fact, the changes in the spatial coordinates include the health of the cable system Status information, that is to say, the health status of the structure can be judged by using the structural space coordinates, and can be monitored based on the spatial coordinates (the present invention refers to the monitored spatial coordinates as "monitored quantities", and the "monitored quantities" mentioned later refer to the monitored quantities. monitoring spatial coordinates) to identify damaged cables. The monitored quantity is not only affected by the health status of the cable system, but also affected by the settlement of the cable structure support (which often occurs). At present, there is no open and effective Health monitoring system and method solves this problem

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