摘要
在变截面连续箱型梁桥影响线的基础下,利用有限元模型对包头黄河大桥进行了最不利荷载工况的模拟,并综合分析了该桥的应力状态和变形情况,结果显示,预应力钢筋与混凝土节点耦合处有应力集中现象,全桥的其他区域应力分布均匀、协调,桥梁在正常工作状态下,截面的最大应力比约为0.5,有较好的安全储备.
Based on the influence line of the second Baotou Yellow River Bridge,the case for the response of the model under the most unfavorable load was simulated. The state of stress and deformation were analyzed comprehensively. The result shows that the stress is well-distributed and coordinated entirely and the working compress stress level is about 50%,with the stress concentration occurred in the region of local boundary and coupling nodes of the concrete and the prestress steel. The whole bridge has a good safety reservation.
出处
《内蒙古科技大学学报》
CAS
2015年第3期285-288,共4页
Journal of Inner Mongolia University of Science and Technology
关键词
混凝土箱梁
温度场
ANSYS模拟
concrete box girder
temperature field
ANSYS simulation
