随着我国高速铁路和客运专线建设向山区发展，出现了大量隧道和桥隧紧密相连的施工情况。目前国内外市场上的架桥机不能很好解决通过隧道和在紧邻隧道口处架设桥梁的工况。石家庄铁道大学国防交通研究所技术总监刘嘉武教授带领科研人员历时两年多时间，经过大量的现场试验和施工实践研制出 “SLJ900/32型流动式架桥机”。在架设重900吨、长32米的铁路箱梁过程中，他们采用主辅支腿功能转换技术，实现了无导梁支持的架梁模式，减少了作业流程，克服了普通架桥机在首末跨、隧道进出口和隧道内架梁的最小距离限制，解决了运梁过隧和紧邻隧道口或隧道内架梁的难题，简化了架梁作业程序，提高了作业效率和设备的安全可靠性。该机型经国家质监总局授权的检测机构检测，各项技术指标达到《架桥机型式试验细则》要求，经550余孔梁的架设应用，设备运行良好，性能稳定。
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