大跨曲线连续刚构桥预拱度的参数化研究

A study on setting parametric camber of large-span curved continuous rigid frame bridge

结合广州某大跨曲线连续刚构桥,通过参数变异改变该桥的曲率半径,分析研究了结构自重、施工挂篮、预加力以及混凝土收缩徐变对桥梁悬臂施工过程中预拱度设置的影响,为曲线刚构桥悬臂施工预拱度的设置提出了科学建议.

A curve rigid frame bridge in Guangzhou is taken for an example,the influences of self-weight,the load of construction hanging basket,pre-stress,shrinkage and creep,on camber of large-span curved continuous rigid frame bridges with different curve radius in construction are analyzed in this paper.The reserch works provide a scientific proposal for setting pre-arched of large-span curved continuous rigid frame bridges in the construction.