Method for producing a construction element, in particular a tunnel element, from a curing material, such as concrete, in a mold, said construction element being provided with a watertight seal on at least one side thereof, wherein a gasket is used comprising a deforming body which is produced from a yielding material, such as rubber. According to the invention a base is produced from a relatively strong material, which base may or may not be detachable from the deforming body. Said base with or without said deforming body is placed against an inner side of the mold, said curing material is cast in the mold, and said curing material is cured to form said construction element with said watertight seal.

Method for producing a construction element, in particular a tunnel element, from a curing material, such as concrete, in a mold, said construction element being provided with a watertight seal on at least one side thereof, wherein a gasket is used comprising a deforming body which is produced from a yielding material, such as rubber. According to the invention a base is produced from a relatively strong material, which base may or may not be detachable from the deforming body. Said base with or without said deforming body is placed against an inner side of the mold, said curing material is cast in the mold, and said curing material is cured to form said construction element with said watertight seal.

The present application relates to an installation method for a closure joint of an immersed tunnel, and belongs to the technical field of closure joints; the installation method comprises the steps: establishing a first coordinate system; distributing feature points; installing the N.sub.+2 tube coupling; installing an N.sub.+1 tube coupling and pushing out a push-out segment; wherein, the first coordinate system is established at a tail end of an N.sub.+3 tube coupling, breakthrough points N.sub.+1S and N.sub.+1W are distributed at a head end and a tail end of a N.sub.+1 tube coupling respectively, breakthrough points DS and DW are distributed at a push-out segment, and breakthrough points N.sub.+2S and N.sub.+2W are distributed at a head end and a tail end of a N.sub.+2 tube coupling respectively; and coordinates of the breakthrough points DS, DW, N.sub.+1S, N.sub.+1W, N.sub.+2S, N.sub.+2W in the first coordinate system are calculated respectively; the installation method can improve the installation accuracy of the closure joint and is easy to operate.

The present application relates to an installation method for a closure joint of an immersed tunnel, and belongs to the technical field of closure joints; the installation method comprises the steps: establishing a first coordinate system; distributing feature points; installing the N.sub.+2 tube coupling; installing an N.sub.+1 tube coupling and pushing out a push-out segment; wherein, the first coordinate system is established at a tail end of an N.sub.+3 tube coupling, breakthrough points N.sub.+1S and N.sub.+1W are distributed at a head end and a tail end of a N.sub.+1 tube coupling respectively, breakthrough points DS and DW are distributed at a push-out segment, and breakthrough points N.sub.+2S and N.sub.+2W are distributed at a head end and a tail end of a N.sub.+2 tube coupling respectively; and coordinates of the breakthrough points DS, DW, N.sub.+1S, N.sub.+1W, N.sub.+2S, N.sub.+2W in the first coordinate system are calculated respectively; the installation method can improve the installation accuracy of the closure joint and is easy to operate.

Method for producing a construction element, in particular a tunnel element, from a curing material, such as concrete, in a mould, said construction element being provided with a watertight seal on at least one side thereof, wherein a gasket is used comprising a deforming body which is produced from a yielding material, such as rubber. According to the invention a base is produced from a relatively strong material, which base may or may not be detachable from the deforming body. Said base with or without said deforming body is placed against an inner side of the mould, said curing material is cast in the mould, and said curing material is cured to form said construction element with said watertight seal.

The present application relates to an immersed tube production system and production method, the production system comprising: a production line, including a rebar binding area, a rebar cage storage area, an immersed tube production area and an outfitting area; a first and a second steel sealing gate are disposed at two ends of the immersed tube production area; the immersed tube production area comprises multiple pouring areas; and the outfitting area is located on a water surface of an external water area; a rebar production area, including a rebar storage area, and a bottom, sidewall and roof rebar processing areas; the rebar production area is located at a side of the rebar binding area; and the rebar binding area is configured to bind the bottom, sidewall and roof rebars into rebar cages; and first hoisting equipment, configured to transport the rebars in the rebar production area.

The present application relates to an immersed tube production system and production method, the production system comprising: a production line, including a rebar binding area, a rebar cage storage area, an immersed tube production area and an outfitting area; a first and a second steel sealing gate are disposed at two ends of the immersed tube production area; the immersed tube production area comprises multiple pouring areas; and the outfitting area is located on a water surface of an external water area; a rebar production area, including a rebar storage area, and a bottom, sidewall and roof rebar processing areas; the rebar production area is located at a side of the rebar binding area; and the rebar binding area is configured to bind the bottom, sidewall and roof rebars into rebar cages; and first hoisting equipment, configured to transport the rebars in the rebar production area.

The present application provides a top-lock pull-out type connecting device and an immersed tube construction ship; the connecting device comprising a support member, fixedly connected to the load-bearing element and located on a side of the load-bearing element facing the borne element; a sliding member, been able to slide relative to the load-bearing element in a connection direction of the load-bearing and borne elements; an ejector rod, used to push the sliding member, fixedly connected to the borne element; a first locking member, used to lock the ejector rod, movably connected between an end of the sliding member close to the borne element and the support member, and can to be driven by the sliding member to be close to or away from the ejector rod; and a second locking member, used to lock the sliding member, and connected between an end of the sliding member away from the borne element and the load-bearing element.