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通过对带预锯缝的全无缝桥接线路面模型的室内3个周期往复张拉试验,得到了配筋路面的裂缝宽度、基底摩阻力及锚固端端锚固力等的变化数据,提出了地锚的设计要求;通过对带地梁的全无缝桥破坏试验,引入位移延性计算公式分析了半整体式全无缝桥的延性性能,证实了全无缝桥是一种延性性能很强的结构形式。此外该文还考虑了往复荷载对接线路面裂缝宽度的影响,引入了往复荷载影响系数,完善了接线路面裂缝宽度的计算公式。
Through the three-cycle reciprocating tension test of fully seamless bridge pavement model with pre-sawing, the change data of the crack width, the base frictional resistance and the anchorage end anchorage force of the reinforced pavement are obtained. Anchorage design requirements. Through the test of the completely seamless bridge with ground girder failure, the ductility of semi-monolithic seamless bridge is analyzed by introducing the displacement ductility formula, which proves that the all-seamless bridge is a ductile one structure type. In addition, the paper also considers the influence of the reciprocating load on the crack width of the pavement, introduces the influence coefficient of the reciprocating load, and improves the calculation formula of the crack width of the pavement.