The invention discloses a self-weight-adjustable
immersed tube of a
reinforced concrete embedded tube and a design and construction method. The self-weight-adjustable
immersed tube is applied to the technical field of
immersed tube tunnels. The immersed
tube structure comprises an immersed
tube structure body and pipelines arranged in the immersed
tube structure body, and the pipelines are used for pouring
ballast fluid into the immersed tube structure body. The design method comprises the steps that B1, the number of groups of the pipelines is selected, and the
weight range of the immersed tube structure is determined and adjusted; B2, the
ballast fluid is selected, and the
weight range of the immersed tube structure is determined and adjusted; and B3, the
ballast fluid is poured into the immersed tube structure body through the selected groups of pipelines, and the
self weight of the immersed tube structure is adjusted. The construction method comprises the steps that S1-S3, the immersed tube structure is formed through pouring; and S4-S7, navigation and installation construction are conducted. According to the self-weight-adjustable immersed tube of the
reinforced concrete embedded tube and the design and construction method, the
self weight in the immersed tube structure can be adjusted, the draft of the immersed tube structure is automatically adjusted, navigation is convenient, the requirement for the navigation
water depth is lowered, the requirement for the foundation trench depth is lowered, the construction difficulty of the immersed tube tunnel is also lowered, and construction is more convenient.