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With the rapid development of viaduct construction skills, segmental beam construction skills, as a new and useful way of skills, have been widely recognized in the construction of viaduct in China. By analyzing the skills and advantages of segmental beam construction, this paper expounds the quality control measures of the construction skills of the viaduct section beam, which can provide some reference for the relevant builders.

Segmental beam refers to the whole span bridge is divided into many segments, will be gathered in the prefabrication yard for prefabrication, after the completion of the prefabricated segments will be transported to the bridge construction site, the use of special bridge erecting machine for hoisting, conditioning, glue splicing, tensioning, erection and installation of the whole hole beam construction process.
The construction technology is relatively mature in Hong Kong, Europe, America, Southeast Asia and other places. Through the promotion and application in recent years, some achievements and construction experience have been achieved in China. However, the planning and construction projects of domestic segmental beam construction skills are still few, the planning and construction experience are not mature, and no guiding and systematic planning specifications and acceptance specifications have been formed. Therefore, the research efforts should be strengthened.

For bridges constructed with prefabricated segmental assembly skills, the uniform characteristics of their cross sections and shapes determine that short-line method is more suitable for segmental beam prefabrication, that is, one-time prefabrication of each segment of each hole beam is not required for a long pedestal, only one segment is prefabricated for each set of pedestal, and standardized and modular construction is implemented by using advanced equipment, in order to ensure the production of high quality and specifications of the prefabricated segments, and batch replication, in order to improve the utilization of equipment tooling, reduce costs.

In addition to the necessary infrastructure, the most important thing is the model system. In addition to selecting the shaped steel formwork, the three-dimensional control system and positioning trolley should also be equipped. The initial segment should be prefabricated first, and then the adjacent segment should be prefabricated with the end face of the initial segment as the matching surface, that is, the end face of the formed segment should be used as the template of the adjacent segment, and the blocking agent should be applied to the matching surface, prefabrication of the next segment, by analogy, until the end of the final segment of the prefabrication, so that because of the error on the whole hole beam formation of the cumulative error is useful to eliminate, so that the assembly of each segment of the convergence of the problem is fully resolved, and then useful to ensure the assembly of the end of the segment of the agreement.