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钢筋砼连续梁在个别支座沉降时,支座反力和梁内应力将出现重分配,一般可按结构力学或弹性力学方法计箅。当梁出现弯曲裂缝或剪切裂缝后,连续梁的反力和应力又将出现新的重分配,此时已不能按结构力学成弹性力学方法求解。我们通过23根两等跨钢筋砼连续梁的结构试验,分析中间支座不均匀沉降和裂缝开展后梁的反力、承载力和破坏形态等方面的变化规律,并以增强配筋的方法来改善支座不均匀沉降对连续梁的影响。
When the reinforced concrete continuous beam is settling on individual bearings, the bearing reaction force and the internal stress of the beam will be redistributed, generally according to structural mechanics or elastic mechanics methods. When the beam shows bending cracks or shear cracks, the re-distribution of the counter-force and stress of the continuous beam will occur again. At this time, it cannot be solved by structural mechanics into elastic mechanics. Through 23 structural tests of two consecutive reinforced concrete continuous beams, the irregularities of the intermediate supports and the changes in the reaction forces, bearing capacity, and failure modes of the beams were analyzed, and the methods of reinforcing reinforcement were improved. The influence of uneven settlement of bearing on continuous beam.