Investigation of Railway Bridges Under Current Operating Conditions

9402224 Foutch，道格拉斯A. 本研究的主要目的是提供实验数据和分析结果，这将显着改善目前的做法，评估，修复和设计的铁路桥梁。 该计划将涉及美国铁路协会和伊利诺伊大学研究人员的合作努力。 将进行现场试验，以确定铁路桥梁在当前运营条件下的荷载谱。 分析研究将比较测量和计算的构件应变。 将开发用于评估现有铆接钢桥剩余寿命的新模型。 这些对于现有桥梁存量的良好管理至关重要，并将有助于铁路公司做出有关资本资金投资的重要决策。 研究结果将有助于提高美国铁路的竞争力。 ***

9402224 Foutch, Douglas A. The main objective of this research is to provide experimental data and analytical results that will significantly improve current practice of evaluation, rehabilitation and design of railway bridges. The program will involve a cooperative effort among researchers from the Association of American Railroads and the University of Illinois. Field tests will be conducted to determine the loading spectra that railway bridges under current operating conditions. Analytical studies will compare measured and calculated member strains. New models for evaluating the remaining life of existing riveted steel bridges will be developed. These are essential for the sound management of the existing bridge stock and will assist the railroads in making important decisions regarding the investment of capital funds. The research results will help to improve the competitiveness of American railroads. ***