Progressive type healthy monitoring method of rope system based on space coordinate monitoring during support settlement

Abstract

The invention relates to a progressive type healthy monitoring method of a rope system based on space coordinate monitoring during support settlement, which is based on the space coordinate monitoring and determines whether a mechanical calculation reference model of a structure needs to be updated again or not by monitoring the coordinates of a support of the 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 unit damage quantity to be monitored and a current nominal 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, a big interval is divided into a plurality of continuous small intervals, the linear relationship is accurate enough in each small interval, and the non-inferior solution of the current rope damage vector can be calculated in each small interval by utilizing the proper algorithms of a multi-objective optimization algorithm and the like, so that the position of a damaged rope and the damage degree thereof can be more accurately determined.

Description

technical field [0001] Cable-stayed bridges, suspension bridges, truss structures and other structures have one thing in common, that is, they have many parts that bear tensile loads, such as cable-stayed cables, main cables, slings, tie rods, etc. , cables, or rods that only bear tensile loads are supporting components, and this type of structure is expressed as a "cable structure" in the present invention for convenience. When there is support settlement, the invention discloses a progressive method based on spatial coordinate monitoring to identify the support system of the cable structure (referring to all load-bearing cables, and all supporting rods that only bear tensile loads, For the sake of convenience, this patent refers to all the supporting parts of this type of structure as "cable system", but in fact the cable system not only refers to the supporting cables, but also includes the damaged cables ( For the truss structure, the method refers to the damaged member t...

AI Technical Summary

Problems solved by technology

Changes in the health status of the cable system will cause changes in the measurable parameters of the structure, for example, the spatial coordinates of the cable structure will change. In fact, the change in the spatial coordinates contains the health status information of the cable system, which means that the Spatial coordinates determine the health status of the structure, which can be based on spatial coordinate monitoring (the present invention refers to the monitored spatial coordinates as "monitored quantities", and the "monitored quantities" mentioned later refer to the monitored spatial coordinates) to identify damage In addition to being affected by the health status of the cable system, the monitored quantity will also be affected by the settlement of the cable structure support (which often occurs). At present, there is no public and effective health monitoring system and method to solve this problem.

Images