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目前在计算水平弯曲的复合钢梁桥时,通常采用一种近似方法,即单个直梁的线弹性分析法,其中具有可变参数以考虑构件曲率。归纳了明尼苏达州德卢斯的一个具有较重活荷载的多跨水平弯曲工字形复合钢梁桥的现场试验数据和计算结果。将8个320kN的卡车以43种静力加载和13种动力加载的方式放置在桥上,并将试验结果与线弹性梁格分析中得到的结果进行对比。桥被设计为由强度控制,梁的应力达到了屈服应力的75%,有些部位甚至达到了最大应力,同时,对梁、隔板、水平抗风支撑、桥面板、轴承的性能和疲劳特性进行了描述。采用梁格分析以验证这些方法对于计算梁桥承载能力的有效性和准确性。
At present, an approximate method is usually adopted in the calculation of horizontal curved composite steel girder bridges, ie, the linear elastic analysis of a single straight beam with variable parameters to account for the curvature of the member. The field test data and calculation results of a multi-span horizontal-bent H-shaped composite steel girder bridge with heavy live load are summarized in Duluth, Minnesota. Eight 320 kN trucks were placed on the bridge in 43 static and 13 dynamic loads and the results were compared with those obtained in linear elastic beam analysis. The bridge is designed to be controlled by the strength and the beam reaches a stress of 75% of the yield stress, with some parts even reaching the maximum stress. At the same time, the performance and fatigue properties of the beam, bulkhead, horizontal windbreak support, bridge deck, bearings The description. Beam analysis is used to verify the effectiveness and accuracy of these methods for calculating the bearing capacity of a beam bridge.