基于有限元的在役桥梁纵向刚度修正法
王凌波;贺栓海;蒋培文
【期刊名称】《合肥工业大学学报（自然科学版）》 【年(卷),期】2011(034)011
【摘要】According to plane cross-section assumption and finite element theory, the section solving e-quations of longitudinal stiffness are deduced. As static test parameters has good properties such as being stable, reliable and accurate, the real beam outdoor test is implemented to correct longitudinal stiffness of the bridge and verify this new algorithm. The experimental results show that the deflection theoretical values at each measure point in longitudinal beam, which is calculated by the new algorithm, match well with the experimental ones. This method can be used to calculate longitudinal stiffness lack caused by all kinds of damage, lock the damage range quickly, estimate the damage degree effectively, and distinguish the damage condition of the whole longitudinal beam accurately. The comparative and analytical results indicate that the stiffness calculated by the new algorithm has higher precision than that calculated according to related standard, and it can reflect the whole damage status of in-service bridges veritably and reliably. So it is convenient for the engineers to identify invisible bridge damage area and evaluate the damage degree of bridge comprehensively.%根据平截面假定及有限元基本原理,推导梁桥纵梁刚度分段
基于有限元的在役桥梁纵向刚度修正法
