中等跨径变高度连续梁不同施工方案综合分析

Comprehensive Analysis of Different Construction Schemes for Medium Span and Variable Height Continuous Beams

中等跨径变高连续梁常用的施工方案有满堂支架现浇法及挂篮悬臂浇筑法等。设计时,需结合现场的施工条件、工期、经济指标等因素,采用合理的施工方案。施工方案的不同,也会影响结构尺寸及钢束的设置。现利用桥梁计算软件“桥梁博士”对同一桥梁在不同施工方案下的受力进行计算分析,并综合对比受力性能、工程造价和施工方案利弊。相关结论对类似桥梁建造工程有借鉴作用。

The commonly used construction methods for medium span and elevated continuous beams include full support cast-in-place method and hanging basket cantilever pouring method.When designing,a reasonable construction plan should be adopted based on factors such as on-site construction conditions,construction period,and economic indicators.The different construction plans can also affect the structural dimensions and the setting of steel strands.We now use the bridge calculation software—Bridge Doctor to calculate and analyze the stress of the same bridge under different construction schemes,and comprehensively compare the stress performance,engineering cost,and construction scheme advantages and disadvantages.The relevant conclusions have reference value for similar bridge construction projects.