Impact of Environmental Classification on Steel Girder Bridge Elements Using Bridge Inspection Data

Keywords: Bridge Management, Environmental, Element, Service Life

and optimize bridge improvement programs within budgetary constraints. Several factors, including age, traffic, and environment have been identified in current BMS literature as being directly responsible for the deterioration of bridge components or elements. However, no formal methodology exists to determine the effects of the
environment. Estimating bridge elements service lives, without considering the effect of environmental factors, could potentially lead to biased estimates. A methodology is proposed using statistical analysis to determine the effects of environmental regions on service life estimates of steel girder bridge component (concrete deck) and element/protective system (girder paint) using bridge inspection field data collected by bridge inspectors. Further, existing deterioration models are incapable of using the non-numeric element level inspection data, which
most state DOT’s have been collecting for nearly thirty years per Federal Highway
Administration guidelines. The data format used were the numerical condition appraisal scale (9 through 0) for concrete deck component, and the letter condition appraisal (G-F-P-C) for steel girder paint element. The methodology proposed an environmental classification system for use in BMS programs. In addition, least squares mean and corresponding standard errors and also means and corresponding standard deviations of service lives at the component and element/protective system levels were estimated. The steel girder paint estimated service lives can be used in scheduling maintenance, repair and rehabilitation operations, and also in life-cycle
costs analysis at the project and network levels. Because of limitations in the concrete deck data sets, the estimated concrete deck service lives are not true estimates of their service lives but do reflect the influence of environmental exposure characteristics on their performance.

非常感谢上面的！要是能翻译出来就更好了，我现在正在忙着翻译了，本人英语水平不好啊！翻译着很困难！

再发几篇嘛．我们要两万字啊．

如果你把上面的翻译出来了，请发给我吧。我也是做这个毕业设计。已经头疼很长时间了。自己也不会翻译。如果你需要什么帮助，也可以告诉我，我不想白占别人的便宜。谢谢。dcs_114@163.com

可不可以给我也发一份 最近搞的头大了 dongcun14@163.com