The Self-anchored Suspension Bridge Error Analysis And Disease Control Method

As a new bridge type, the self-anchored suspension bridge has been widely used in practical. Because the different position of the uplift of suspension bridges, the stiffening girder axial bear pressures, it produces many problems on design and construction. Because there is little familiar with the theory and practice of the self-anchored suspension bridge. The causes of diseases including differences, design and construction are unavoidable.Base on the theory of calculation and practice, we take 30m+90m+30m two sling faces self-anchored suspension bridge as an example to introduce the analyze, design and appear differences and disease of self-anchored suspension bridge. I attempt to analyze from three aspects:model differences, construction differences, and the differences of diseases and survey. In view of the above problems, I do the following:(1) Based on the characteristics of stress and structure of self-anchored suspension bridge, I make a detailed analysis of individual problems, including the differences of cable saddle simulation, cable support tower compression and creep and shrinkage of concrete design parameters, and the design parameter designation, different designers have different solutions. This article puts emphasis on calculation method of the different main cable form, and makes essential analysis of the structure. Take bridge as an example, I make use of "Midas civil" to introduce the calculation method of the self-anchored suspension bridge.(2) As complicated bridge, the construction of the self-anchored suspension bridge causes the importance of relevant departments. Any project can not prevent from differences and diseases. Therefore how to make discovery timely, and handle it reasonable becomes very important. Based on the concrete cracks of concrete pavement structure, the influence of the structure, steel pipe welding deformation on the effects of concrete, and the position of the cable tower height on the main cable, shape influence to do a detailed introduction and analysis for the self-anchored suspension bridge construction provides a theoretical and practical basis.(3) The practice of surveying indicates, for a certain quantity of actual amount observation, there is difference between every observed value. For more actual quantity, even if we know these should meet some theoretical observations, but the observed value often unequal to the deserved theoretical value. And there are many factors of causing differences; this text embodies three parts, including the instrument differences, personal differences and the effect of external surroundings, to expound the causes of differences and the method of control.