Research on the waterproof design of the prefabricated assembled utility tunnel joints

Abstract

With urbanization development and the introduction of national policies, the prefabricated utility tunnel has been the future direction of the utility tunnel development due to great advantages in the quality, time and cost compared with the cast-in-place utility tunnel. This paper introduces three joint forms and analyses the main existing problems in waterproofing technology of precast utility tunnel joints. Besides, the fourth most common waterproof materials and waterproof constructions of prefabricated utility tunnel in China are discussed. This paper aims at providing some new ideas of waterproof materials and constructions for researchers and engineers, further promoting development of prefabricated utility tunnel.