预应力连续梁桥施工过程中各参数的影响分析

Analysis on influencing parameters in construction process of prestressed continuous beam bridge

以巴江河大桥主桥为工程背景,通过对多个参数对挠度的敏感性进行分析,得知预应力、主梁自重对主梁挠度及应力影响较大,指出在施工过程中应对影响较大的参数严格控制,并根据实际参数情况对理论计算进行必要的调整,使桥梁竣工后的线形和内力符合设计的要求。

Taking Bajianghe bridge as example, analysis of influences of several parameters on sensitiveness of flexibility show prestress and dead weight of main beam are major factors influencing the flexibility of main beam. Based upon this analysis strict control is made on those parameters in construction; at the same time necessary adjustment is made on theoretical parameter according to practice in order to ensure linear control and design requirements.