Predicting structural life is one of the difficult problems in engineering. The service life of orthotropic steel bridge deck is much lower than the design expectation. Multiple fatigue fractures not only reduce the bearing capacity of the structure, but also are very difficult to repair, which has become a difficult heart disease in the bridge industry. The reason is that the load effect does not match the fatigue resistance of welded joints.

The bridge is known as the "pearl on the crown" of civil engineering. With the rapid development of China, a number of world-class super large projects are emerging, which are destined to become milestones and symbols of the new era.

On the morning of November 27, the main bridge of Huanghu bridge, the longest Lake crossing bridge in Anhui Province, was successfully closed. The successful closure of the main bridge of Huanghu bridge lays a solid foundation for the opening of Huanghu bridge at the end of December 2021 as planned.