某T形连续刚构桥0号块局部应力空间分析

On analysis of No. 0 block partial stress at some T-shaped continuous rigid frame bridge

以一座预应力混凝土连续刚构桥为例,采用Midas有限元软件建立该桥0号块空间有限元模型,并从空间杆系模型提取0号块两端作用荷载代入模型计算,计算结果表明:主梁除局部应力集中位置外,整梁应力合理、分布均匀,满足了规范要求。

Taking some prestressed concrete continuous rigid frame bridge as the example, the paper adopts Midas finite element software to establish the No. 0 block spatial finite element model, extracts the loading at two ends from the spatial spar and beam system to undertake the framework calculation, and proves by the result that the stress of the beam is distributed evenly and reasonably except the parts with concentrated stress, so it meets the demands.