摘要
结合某连续刚构桥实测的长期挠度数据,通过建立不同模型工况的有限元模型,分阶段对结构的长期挠度实测数据与计算值进行对比分析。结果表明,考虑作用准永值和结构损伤以后的长期挠度计算方法更加接近实际下挠。在分析实测数据和计算结果的基础上,引入结构长期挠度修正系数的方法来预测结构长期挠度。
According to the long-term deflection data measured from a continuous rigid frame bridge, and through the establishment of the different working finite element models, the article compares and analyzes the measured data and the calculation values of the long-term construct deflection by stages. The results show that the calculation method of long-term deflection considering the effect of quasi permanent and structural damage is more close to the actual scratch. On the basis of analyzing the measured data and the calculation result, the method of long-term deflection correction coefficient is introduced to forecast the long-term deflection of structure.
出处
《城市道桥与防洪》
2015年第7期63-65,10,共3页
Urban Roads Bridges & Flood Control
关键词
连续刚构
长期下挠
结构损失
挠度修正系数
挠度预测
continuous rigid frame,long-term scratch,structure loss,deflection correction coefficient,deflection forecast
