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顶推施工技术自诞生以来,以其占地少、不影响桥下净空、施工设备简单、架设费用低、质量稳定等优点,使其不仅成为我国中小跨连续梁建设的首选工艺,而且在各种桥型及结构中都得到了广泛应用。但其在大跨径通航孔中的应用较悬臂施工法来讲却受到很大限制,为使先进、科学的顶推施工技术能逐步替代悬臂施工技术成为大跨径桥梁的首选工艺,需对大跨径顶推施工技术课题进行系统的研究。由于大跨径顶推技术课题研究尚浅,需要更多的研究人员对其进行研究。作者仅就大跨径连续梁桥的顶推施工技术进行详细研究和讨论。
Since its birth, the jacking construction technology has not only reduced the space but also has no influence on the clearance under the bridge, it has the advantages of simple construction equipment, low installation cost and stable quality. It not only becomes the first choice for the construction of medium and small span continuous beams in our country, Bridge type and structure have been widely used. However, its application in long-span navigable holes has been greatly restricted compared with cantilever construction method. In order to gradually replace the cantilever construction technology with the advanced and scientific push construction technology, the application of cantilever construction technology becomes the first choice for long-span bridges. Long-span jacking construction technology subject to conduct a systematic study. Due to the shallow research on long-range thrust technology, more researchers need to study it. The author only studies and discusses in detail the jacking construction technology of the long-span continuous girder bridge.