SOBSE Starts Operational Testing on Interurban Train

Mexico City’s Ministry of Public Works and Services (SOBSE) has announced the start of load testing on the Mexico-Toluca Interurban Train’s Mexico City section. The tests are designed to evaluate how the structures perform under the operational conditions of the trains.

SOBSE, in collaboration with the federal Ministry of Infrastructure, Communications, and Transport (SICT) and the Institute of Engineering of UNAM (IIUNAM), commenced load testing on the initial segment of the 17.5km Interurban Train line in Mexico City.

The testing phase includes both static and dynamic load tests to assess the performance of the structures along the viaduct. A total of 23 accelerometers have been installed on various types of structures to measure vibrations and accelerations under fixed and moving loads.

Static tests involve halting two trains loaded with sandbags, which simulate the maximum weight of passengers, for up to three hours. Dynamic tests evaluate the structure's response to moving loads. During these tests, the accelerometers record vibrations, oscillations, accelerations, resonance, and load distribution as trains, traveling at 60km/h with simulated weights, move along the viaduct.

Topographic measurements are taken before, during, and after the trains' operation to verify the results of these tests. Ongoing evaluations will be conducted on different segments of the line to ensure the structural and operational integrity of the infrastructure, meeting safety and functionality standards required for the line's operation, SOBSE reported.