Building structure safety visual monitoring method

The invention discloses a visual safety monitoring method for a building structure. The method comprises the following steps: establishing a finite element model of a monitored object; respectively setting forced displacement with the size of 1 on the monitoring points of the finite element model, and calculating the structural deformation condition of the monitoring points under the action of the forced displacement; calculating the initial structure deformation condition of the monitored object under the dead load effect, and integrating the deformation index data of each node into a structure initial deformation vector; a displacement sensor is installed on a monitoring object, structural deformation monitoring of a monitoring point position is carried out, monitoring data are obtained, and the monitoring data are integrated into a monitoring data column vector; calculating a modal coefficient vector of the current monitoring data; calculating an additional deformation response column vector of the monitor