以一座弯箱梁桥———枣木高速木石互通立交A匝道桥为工程背景,针对预应力张拉顺序,设计了4种不同的张拉方案,运用M IDAS/FEA软件进行模拟计算,根据支座反力、箱梁混凝土应变、应力、位移及钢筋单元的应力应变,分析不同预应力张拉次序对箱梁位移及变形的影响。模拟计算结果表明:当弯箱梁桥曲率半径为150m时,不同的张拉次序对弯箱梁位移及变形的影响不是特别明显。 Taking a curved box girder bridge-Jujube Expressway-Mushu interchange interchange A ramp bridge as the engineering background, four different tensioning schemes were designed for the prestressing tension sequence, and MIDAS / FEA software was used to carry out the simulation calculation. According to Bearing reaction force, concrete box girder strain, stress and displacement as well as stress and strain of steel bar element, the influence of different prestressing tension sequence on displacement and deformation of box girder is analyzed. The simulation results show that when the bending radius of curved box girder bridge is 150m, the influence of different tensioning sequence on the displacement and deformation of curved box girder is not obvious.