| Along with our country bridge construction technology's leap-like development, all kinds of super long-span bridges have been used to transport construction.Span of more than 600m of very large multi-span bridges using steel box girder and steel truss stiffening girder as the bridge deck department is generally orthotropic steel bridge panel.In this kind of bridge's each construction stage, especially in cross-bridge structure connected case, in order to improve construction efficiency, the need for construction vehicles entering the bridge cross-regional operations.But under this condition the steel floor system has lost the paving stress diffusion protection, possibly compares under the heavy load vehicles wheel-pressure's stressful condition and the operation stage to have the remarkable worsening.Therefore, it is necessary to try harder the beam bridge construction special details in view of the ultra greatly cross steel, the research construction temporary vehicles load to the steel floorboard structure secure influence, thus guarantees in the construction process the steel floorboard structure security.This article unifies the Beipan river bridge's construction situation, establishes the Beipan Jiang steel clothes rack stiffening girder hanging bridge orthogonal opposite sex steel floorboard using finite element software ANSYS the finite element model, to it after the steel floorboard hoisting completes, in the construction temporary vehicles load the bridge work carried on the detailed geography to the steel floorboard's structure safe influence to discuss the analysis, the pointed measure which the union findings gave, has safeguarded the Beipan Jiang especially big bridge construction process security and the order carries on.In the operation stage, the overload overspeed phenomenons are getting more and more. This article in view of just the floorboard under the motion load and the heavy load function primary member's stress, the distortion analyzed as well as moves under the load the floorboard power response to carry on has analyzed in detail, further discussed the steel bridge floor in stress analysis's foundation the weary checking calculation question. |
