由于大跨径PC刚构桥上部结构施工工序多、工期长、施工较复杂,容易造成主梁实际线形与理论线形有一定偏差,从而影响结构受力。以某一大跨径PC刚构桥施工过程中出现的主梁节段线形局部偏差为例,分析线形偏差对主梁结构内力的影响,同时研究对应的处理措施。 Due to the large number of construction steps and long construction period of the superstructure of the long-span PC rigid frame bridge, the construction is complicated, and the actual linear shape of the main beam may easily deviate from the theoretical linear shape, thereby affecting the structural stress. Taking the local linear deviation of main girder segment during the construction of a large span PC rigid frame bridge as an example, the influence of linear deviation on the internal force of main girder structure is analyzed and the corresponding treatment measures are also studied.