Gantry cranes in municipal projects are greatly affected by wind, and crane derailments and overturning accidents caused by wind occur from time to time. This article analyzes the cause of a derailment gantry crane accident caused by a typical wind force, summarizes some misunderstandings and illegal crane operation phenomena that are common to operators during the use of wind-resistant and anti-skid devices of gantry cranes, and proposes corresponding safety measures for your reference and discussion.
What Gantry Crane Accident Happened
A gantry crane (model MHE10+10t-31m A3, span 31m, height 9m, equipment weight 33t) was normally constructed at the construction site of a subway project. When working around 8 p.m., the person in charge of project safety received a yellow warning notice of high winds (gusts of approximately 9 mph), so they notified the site to stop all operations, arranged for the gantry crane driver to use the rail clamp to secure it, and all personnel were evacuated.
At approximately 10 o'clock on the 21st, the instantaneous wind was very strong, and the project safety officer immediately arranged for personnel to inspect the construction site to prevent accidents. During the inspection, engineering safety personnel discovered a gantry crane accident-the crane was significantly skewed, one side of the outrigger was out of track (Figure 1), and one side of the track was broken (Figure 2).
The engineering safety personnel immediately notified the person in charge of the project, and then arranged for the temporary fixation of the gantry crane to prevent further consequences from the gantry crane accident. After the yellow warning of high winds was lifted, emergency measures were taken to eliminate the dangerous condition caused by the gantry crane accident.
This gantry crane accident highlights the critical importance of following wind warning protocols and securing heavy equipment properly in open-air construction environments.
