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本文以宁波机场快速路高架桥改造工程为例,对高架桥改造方案进行研究,对预制吊装的空心板梁T梁、先简支后连续小箱梁和现浇混凝土连续箱梁三大改造方案进行比较分析,根据工程实际要求,最终选用先简支后连续小箱梁方案,并进一步对其具体施工方案进行阐述。
Taking Ningbo Airport Expressway viaduct reconstruction project as an example, this paper studies the viaduct reconstruction project and compares the three reconstruction plans of prefabricated hollow girder T beam, simply supported continuous small box girder and cast-in-place concrete continuous box girder Analysis, according to the actual project requirements, the final selection of simple support after the continuous box girder program, and further elaborated on its specific construction program.