As the most widely used and diversified bridge type,corresponding construction methods of continuous beams are diverse.The combination of scaffolding with beam-column supports can be applied to various types of cast-in-place bridges.It is also suitable for the construction of variable height continuous beams.Support materials should be reasonably selected for the continuous beam with variable height across the existing building and the limited height of the lower building.In order to meet the height limit requirements of the new railway line crossing the existing municipal road(48+80+48)m continuous beam,an innovative construction method is proposed.A mixed support system is used.Through combining scaffolding with beam-column supports and steel beams with steel pipes,the traditional beam-column supports are replaced.The study uses finite element analysis software Midas/Civil,establishes a detailed bridge temporary support calculation model,and simulates the overall stress state of the bridge in detail.Furthermore,the study deeply analyzes the stress characteristics of each part of the support materials,material strength,stiffness and stability and other key indicators.Finally,based on these detailed simulations and analysis,the study determines the feasibility of cast-in-place supports.
关键词
连续梁/上跨高速/临时支架/Midas/Civil/中央分隔带
Key words
Continuous beam/Upper span high speed/Temporary support/Midas/Civil/Central divider
维普
万方数据