Abstract: Controlling the concrete performance in steel-shell concrete tubes of immersed segments and tube casting parameters in the Shenzhen-Zhongshan link is challenging. To reduce the labor cost and improve the construction efficiency, a selfcompacting concrete casting technology is developed for the steel-shells of immersed tunnel tubes according to the construction′s environmental conditions. An intelligent casting vehicle and folding arm distributor is developed, and the information and automation technology of building information modeling + the Internet of Things + intelligent sensing is further developed, which can effectively reduce the quality risk and mechanical injury caused by human error during the casting process of self-compacting concrete, improving the tube-prefabricating quality.

Key words: Shenzhen-Zhongshan link, immersed tunnel, segment prefabrication, self-compacting concrete, casting technology, intelligentization