The invention relates to the technical field of bridge
bearing capacity evaluation, and discloses an existing
continuous beam bridge
bearing capacity comprehensive evaluation method which comprises the steps that multi-
source data are collected to construct a three-dimensional damage
voxel field, and an initial finite
element model is generated; simulating a
heavy load identification control section, and designing an
equivalent static load test scheme according to an equivalent internal force principle; executing a field static load test, collecting elastic response data and constructing an actual measurement
response vector; calculating errors and iteratively adjusting parameters in a
voxel field constraint range to finish
model correction; and generating an operation space-time security envelope based on the correction model, and comparing the state in real time to output a control instruction. A three-dimensional damage
voxel field is constructed, voxels are used as a normalized data carrier, discrete apparent and internal damage data such as three-dimensional
laser scanning
point cloud,
ultrasonic velocity and rebound strength are mapped into a continuously distributed space field, and the space variability of the rigidity of an existing
bridge material can be represented in a refined mode. And the accuracy of describing the physical current situation of the structure by the initial finite
element model is improved.