In order to meet the relevant requirements of marine environmental protection,the anti-collision pier project of the Dalian Bay immersed tunnel serves as a protective structure for the main body of the immersed tube,adopting a permeable structure.During the construction process,in order to solve the difficulties of underwater operation of submerged caisson and the support of the bottom formwork in the tidal range section,a large steel structure is used to be placed in advance on the top of the caisson as a height connection section to assist in the installation of the caisson.At the same time,the steel structure serves as an offshore construction platform to assist in the construction of cast-in-place piles and caissons,achieving"multiple uses of one object".In the upper structure,an adjustable bracket is used as the bottom formwork support,solving the difficulty of welding brackets in the tidal range section,greatly shortening the construction period and ensuring safety and quality requirements.
关键词
透水式/没顶沉箱/钢围檩/可调托架/潮差段
Key words
permeable/submerged caisson/steel purlin/adjustable bracket/tidal range section
维普
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