Seismic strengthening the structure of the joint portion of the immersed tube

摘要

PROBLEM TO BE SOLVED: To provide an aseismic reinforcement structure for a joint part of a submerged tunnel capable of efficiently improving the water stop performance in a joint part (box joint part) of a submerged tunnel.SOLUTION: A submerged tunnel joint part 21 includes a reinforcement corrugated steel plate 32 which has a wave shape formed in an axial direction of a tunnel and is fixed with anchor bolts 33 covering over the entire periphery of a submerged box joint part 21 as an aseismic reinforcement structure.