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针对某预应力混凝土曲线匝道桥在通车运营前出现支座脱空的现象,建立空间有限元模型对其进行受力计算,通过分析计算结果对通车运营后的支座工作状态作出预测;通过对两种病害处理方案的有限元模型进行受力对比分析,验证了采用预应力钢拉杆进行支座脱空治理的可靠性。
Aiming at the phenomenon that a prestressed concrete curve ramp bridge is not allowed to open before the opening operation, a finite element model of the space is established to calculate the bearing force and the working condition of the bearing after the opening operation is predicted through the analysis and calculation. Two kinds of disease treatment programs of the finite element model of the force comparative analysis to verify the use of prestressed steel support for the control of the seat emptying reliability.