高速公路大跨度预应力T型梁施工阶段上拱度计算

Calculation of Camber of Large Span Prestressed T Beam in Expressway Construction Stage

为较为精确地控制高速公路预应力T型梁施工阶段的上拱度,以某高速公路40m跨T型梁为例,采用MIDAS/Civil有限元软件对该梁进行有限元建模,并对一联4跨T型梁在施工阶段及使用后10年内的上拱度进行了分析,分析结果可为施工阶段和正常使用阶段T型梁上拱度的控制提供科学的依据。

In order to control the highway construction stage of prestressed T type precise beam camber, based on a highway 40m span T beam as an example, using the finite element modeling of the beam of MIDAS/ Civil finite element software, and a combined 4 span T beam in the 10 years after the construction and service on the arch were analyzed. The results provide a scientific basis for the construction and use of T type beam camber control.