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随着国家铁路预制梁产品生产许可证审查制度的日益细化,对预应力铁路桥简支T梁生产中各个环节施工工艺的要求也越来越严格,尤其是对特殊工序的施工要求更高。压浆作业作为T梁施工中的特殊工序之一,规范要求满足终张拉后48 h内压浆的时限要求给原有的压浆工艺提出了挑战。采用水泥砂浆封锚的施工工艺因水泥砂浆凝固时间较长,很难满足这个时限要求。同时,施工过程中水泥砂
With the continuous refinement of the national railway prefabrication license review system, the requirements for the construction technology of all links in the production of simply supported T-beams for prestressed railway bridges are also becoming more and more stringent, especially for the construction of special processes . Grouting operations As one of the special processes in the construction of T-beams, the requirements of the code to meet the requirements of the grouting within 48 hours after the final tensioning pose a challenge to the existing grouting process. Cement mortar anchor construction process due to cement mortar solidification time is longer, it is difficult to meet the time limit requirements. At the same time, the construction process of cement sand