预应力混凝土T型刚构动力试验研究

Analysis of Prestressed Concrete T-Frame Bridge Dynamic Test

为了解预应力混凝土T型刚构的动力性能,为已建该类桥型的动力设计及加固维护提供可靠依据,以某桥为例,基于现有动力荷载试验方法,对该桥进行了动力检测试验,将现场采集试验数据与理论计算数据进行比对研究。研究结果表明,该类结构实际刚度较理论刚度高,但安全储备仍相对不足,应引起足够重视。

In order to master the dynamic characteristic of the prestressed concrete T-frame bridge, a dynamic test was carried out on this type bridge based on the normal method of dynamic loading test, which could provide some useful reference data for this type new bridge′s design and the old ones′ reinforcement and maintenance. The research shows that the practical rigidity is greater than theoretical one, but the structure′s insurance isn′t very enough, which should be paid more attention.