Joint Structure of Immersed Tube Tunnel
A joint structure, immersed tunnel technology, applied in underwater structures, infrastructure engineering, buildings, etc., can solve problems such as the inability to meet the displacement requirements, the inability to meet the fire protection requirements due to fire prevention, and the impact on the service life of waterproof belt components, etc. Achieve the effect of increasing the service life and improving the fire resistance
Active Publication Date: 2019-12-20
CHINA CONSTR ENG HONG KONG
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Problems solved by technology
If a fire breaks out in the pipeline, the fire will inevitably affect the service life of the waterproof belt assembly. Therefore, the current common practice is to install a fireproof board to meet the fireproof requirements of the waterproof belt assembly. However, the existing fireproof board has the following problems: Only fire-proof boards are installed. After testing, the existing fire-proof design meets the fire-proof requirements of two hours, that is, a fire in the pipeline will not affect the waterproof belt components within two hours, and the two-hour fire-proof time limit can no longer achieve effective fire protection. need
At the same time, the two adjacent pipes require longitudinal displacement, and the existing joint structure only has one fireproof board, which cannot meet the displacement requirements
Method used
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.
[0035] In the present in...
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The invention discloses an immersed tunnel pipe joint structure which comprises at least two waterproof belt assembly, a first fireproof assembly and a second fireproof assembly, wherein the first fireproof assembly comprises a protective plate assembly, a thermal insulation piece and a flexible fireproof belt; the protective plate assembly comprises a first fireproof plate and a second fireproofplate arranged at an interval; the thermal insulation piece is positioned between the first fireproof plate and the second fireproof plate; one end of the flexible fireproof belt is connected with thethermal insulation piece; the other end of the flexible fireproof belt is connected with a pipeline; the second fireproof assembly comprises a first fireproof filling piece, a second fireproof filling piece and a third fireproof plate; the first fireproof filling piece is fixedly connected with the bottom wall of the pipeline and extends towards another pipeline; the second fireproof filling piece is fixedly connected with the bottom wall of the another pipeline; and the third fireproof plate covers the connecting part of the first fireproof filling piece and the second fireproof filling piece. With adoption of the technical scheme, the demands of fireproof aging and displacement are simultaneously met.
Description
technical field [0001] The invention relates to the technical field of immersed tube tunnels, in particular to a pipe joint structure of immersed tube tunnels. Background technique [0002] In the immersed tube construction tunnel, the connection between two adjacent pipelines needs to be connected with a waterproof belt assembly, such as a rubber waterstop strip, to prevent external moisture from penetrating into the pipeline through the connection. The waterproof belt assembly In addition to meeting the longitudinal expansion and contraction displacement between tunnel pipe sections, the fire protection requirements must be met within the design period (for example, 120 years), so as to ensure the overall fire performance of the tunnel structure. If a fire breaks out in the pipeline, the fire will inevitably affect the service life of the waterproof belt assembly. Therefore, the current common practice is to install a fireproof board to meet the fireproof requirements of t...
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IPC IPC(8): E02D29/073E02D29/16E02D31/00
CPCE02D29/073E02D29/16E02D31/00
Inventor 陈长卿潘树杰何军佟安岐王国良杨柳
Owner CHINA CONSTR ENG HONG KONG