In the process of cantilever construction of the large bridge,the linear control of bridge was very important to ensure the stability of bridge structure. This paper studied of Demao heavy road bridge a linear monitoring technology as an example,through the theoretical calculation and the experimental data analysis,timely adjustment of the segments in the next section formwork erection elevation,to ensure the status of the bridge meet the design requirements.%在特大桥连续梁悬臂施工过程中，为了确保桥梁结构稳定，桥梁的线形控制至关重要。论文以德茂路特大桥线形监控技术为实例，通过理论计算和实测数据的分析，及时调整下一节段立模标高，确保成桥状态符合设计要求。
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