Research on tubular segment design of submerged floating tunnel

Based on the design technology of immersed tunnel, bridge and tunnel engineering, combining the current relevant design codes or specification of civil and offshore engineering in China, the conceptual design method of submerged floating tunnel tubular segment is presented according to safety, applicability, economy, fine appearance and environmental protection. The selection of tube cross section type, structural analysis, design load, waterproofing and resistant corrosion, tube joint design and tunnel ventilation of submerged floating tunnel etc are described and explored by comprehensively considering the design load, buoyancy to weight ratio, flow resistance performance, durability and other factors of submerged floating tunnel. This paper provides some meaningful suggestions for the design of submerged floating tunnel.