With the development, the use of bridging machines is becoming more and more frequent, but overturning accidents occur from time to time. Bridging machine derailment, overturning, often resulting in the destruction of human death of the major consequences.
In the event of an accident, it will not only take a long time and a lot of money to repair the bridging machine, but also seriously affect the bridge erection and construction progress. Almost every accident contains, without exception, human factors. In fact, if the lower engineering construction units in strict accordance with the "Railway Subgrade Construction Code", the construction of Subgrade, to ensure its quality without leaving the hidden danger of accidents, if the paving units in strict accordance with the "railway bridge frame beam rules" construction, there will be no overturning accident. But now some construction enterprises staff quality is not high, the sense of responsibility is not strong, the technical level is poor, and some units of leadership grasp system implementation is not enough, knack, disorderly operation, not in accordance with the standardization of construction production.
Some construction personnel in the construction process for the figure fast, figure saving and illegal operation, some of the necessary procedures or safety measures to omit, such as the number of pressure is not enough or even no pressure, knowing that the quality of the subgrade is not lucky to pass.
In particular, China's development of high-speed railway process gradually accelerated, bridging machine (32T Bridge crane-LH Electric double girder bridge crane in the construction of high-speed railway will be more frequent use, if the overturning accident caused by casualties and losses will be greater. Because the number of rail paving is an important index held by the Ministry of Railways, but also the national measurement of railway construction progress of the main statistical indicators, construction organization design left to the paving unit of the paving period will be very tense, and in the construction of subgrade construction units, bridge and tunnel construction units for a variety of reasons often drag the duration, and the total duration is constant even The paving time reserved for paving units is shorter. In this case, the paving unit had to work day and night to make progress, so that the staff and body fatigue, for the rush period and the map speed is not in accordance with the rules of construction, so that the quality of the line after the rail paving is poor, and the bridge after the passage of the accident hidden danger, bridge construction personnel in order to catch up with the relevant safety
