Design of a Novel Geometric Control Software for Concrete Segmental Cantilever Bridges

The achievement of this research project in the field of enabling the geometric monitoring of precast segments in the country and for the construction projects of precast segmental concrete bridges using the balanced girder method, which is of interest in the country, is widely used. The experimental results proposed in this project will lead to the achievement of more comprehensive knowledge in the field of geometric correction of precast segments and a significant reduction of errors and costs in the design and construction process. In this study, two approaches have been designed and implemented based on the transformation of the global and local coordinate systems and based on the matrix of direction cosines and the analysis of plane and height deflection angles in order to calculate the segment adjustment numbers and the global coordinates of the plates. Based on the results, the second method compared to the first method has about 20% improvement in offset and 10% improvement in line. Based on the results of the second method, according to the calculation of deviation angles in a decomposed way for the right, center and left side of the segment, the offset values have a significant improvement.