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装配式混凝土简支空心板桥采用企口混凝土饺联结形成整体,共同承受车辆荷载。然而,由于种种原因空心板铰缝失效,导致传荷能力下降甚至形成单板受力,造成梁板的过早损坏,大大缩短桥梁使用寿命。本文采用MIDAS FEA空间计算分析软件来模拟板块和铰缝混凝土,通过铰缝参与工作的有效截面的变化来对比分析车辆荷载作用下不同铰接质量空心板内力的分布情况。
Assembled concrete simply supported hollow slab bridge with Tongkou concrete dumplings form a whole, bear the common vehicle load. However, due to various reasons, hollow joints hinged failure, resulting in decreased capacity or load transmission capacity of veneer, resulting in premature damage to the slab, greatly reducing the service life of the bridge. In this paper, MIDAS FEA spatial calculation and analysis software is used to simulate the plate and reaming concrete, and the distribution of internal forces of hollow plates with different articulated mass under vehicle load is analyzed and compared through the change of the effective section of joint work.