论文部分内容阅读
针对大跨度预应力混凝土连续箱梁悬臂施工节段挠度计算值和实测值存在偏差的问题,基于灵敏度原理,运用Midas/Civil建立陆中湾江桥有限元模型,分别对混凝土容重、混凝土弹性模量、几何尺寸、预应力荷载、预应力束弹性模量等设计参数进行敏感性分析,得出影响主梁位移的主要设计参数,并对其进行了相应调整,实现挠度理论值和实测值相吻合,保证桥梁顺利合龙和成桥线形达到设计状态。
Based on the principle of sensitivity, Midas / Civil finite element model of Luzhongwan River Bridge is established. Based on the principle of sensitivity, the finite element model of Luzhongwan bridge is established. The influence of concrete bulk density, concrete elastic modulus The main design parameters which affect the displacement of the main girder are obtained and the corresponding adjustment is made to realize the theoretical value of the deflection and the actual value of the measured value Anastomosis, to ensure the smooth closure of the bridge and into the shape of the bridge design state.