Safety Evaluation of Existing Steel Bridges

许多公路桥梁的钢梁正在恶化，因为 环境影响、钢构件腐蚀等 由于负载过大而造成的损坏。 为了确定安全性和有用性， 为了确定桥梁的额定值，有必要分析所有 不利的条件加上固有的冗余， 全桥系统的三维特性。 这 该项目将通过应用最新的 基于系统可靠性技术与损伤 评估概念确定如下：制定更好的 了解各种损坏条件的影响， 桥梁的冗余度;评价全桥的安全性 系统;并制定准则， 不同类型的钢桥

Many highway bridges of steel girders are deteriorating because of environmental effects, corrosion of steel components, and other damanages due to oversized loads. To determine the safety and useful rating of the bridge, it is necessary to analyze the effect of all the adverse conditions combined with the inherent redundancy of the three-dimensional characteristics of the total bridge system. This project will investiage the safety of the bridge by applying the latest system reliability-based technology in conjunction with damage assessment concepts to determine the following: develop a better undrstanding of the effects of various damage conditions and redundances of the bridge; evaluate the safty of the total bridge system; and develop guidelines to establish classifications for different types of steel bridges.