Long span continuous rigid frame bridges are often constructed using hanging basket.In order to meet the design shape and internal force of the bridge after completion,it is necessary to monitor during the construction process.Taking the prestressed concrete continuous rigid frame bridge of highway(70+130+70)m as the research object,a bridge calculation model was established using Midas/civil software,and the influence of different jacking forces on the displacement and stress of the bridge pier was analyzed.Selecting concrete density,elastic modulus,and steel tendon pre-stress loss as calculation parameters,the influence of parameter changes on the bridge alignment and internal force was analyzed.The alignment and stress monitoring of the bridge were carried out,and the measured results were in good agreement with the theoretical calculation values.
维普
万方数据
