Method for wrapping concrete caisson with abrasion resisting metal materials
A corrosion-resistant metal and concrete technology, applied to caissons, buildings, infrastructure engineering, etc., to achieve the effect of avoiding damage and simple and feasible installation process
Active Publication Date: 2016-02-24
TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG +2
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Problems solved by technology
However, due to the structural characteristics and weight requirements of the gravity caisson, the commonly used corrosion protection measures are mainly high-performance and high-quality dense concrete, anti-corrosion paint on the surface, or epoxy-coated steel bars instead of ordinary steel bars. However, due to the limitations of the above methods It is difficult to meet the high durability requirements of reinforced concrete structures, and there is an urgent need for more advanced and long-term protection technologies to provide more effective protection for reinforced concrete structures serving as caisson structures
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[0039] Taking the concrete caisson of an offshore project as the protection object, the invention adopts the invention to carry out anti-corrosion and enhanced protection for the concrete caisson's splash area and tidal range area. The 3mm thick 316L stainless steel plate is used as the corrosion-resistant metal plate covering the surface of the concrete caisson. Its size is 1220mm×2440mm, and the lower elevation of the protected area is 0.5 meters below the design low water level (the annual average tidal range is 1 meter). First use 316L threaded studs and 316L nuts with a diameter of 12mm to closely fit the stainless steel plate and the outer formwork of the concrete caisson, and then fix it relatively. Eight sets of anchor points are selected for each structural unit, which are respectively fixed along the edge of the stainless steel plate with studs and nuts, and each edge has three sets. After the fixation is completed, assemble the formwork, pour concrete, remove the nu...
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The invention discloses a method for wrapping a concrete caisson with abrasion resisting metal materials. According to the method, an outer formwork made of concrete is utilized as a supporting structure, studs and nuts serve as fixing and anchoring components, and surface wrapping for a large-area plane concrete structure is achieved. Compared with other external wrapping technologies, formed concrete structures do not need to be perforated, and damage to the concrete structures in the external wrapping process is avoided.
Description
technical field [0001] The invention belongs to the protection field of concrete in the marine environment, and relates to a method for coating a concrete caisson with a corrosion-resistant metal material. Background technique [0002] In recent years, the state's support for the development of the marine economy will not only promote the strategic transfer of my country's marine technology from near and shallow seas to deep and deep seas, but will also further promote the utilization of marine resources in various fields and the development of related key technologies. In terms of developing marine and coastal engineering technology, the "National "Twelfth Five-Year" Marine Science and Technology Development Plan" pointed out that it is necessary to focus on the development of offshore deep-water port marine structure construction technology, submarine tunnel engineering technology research and demonstration, and offshore structures. Construction technology, new marine mate...
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IPC IPC(8): E02D23/00
CPCE02D23/00E02D2250/0007E02D2250/0023E02D2300/002E02D2300/0026
Inventor 秦铁男唐聪马化雄陈韬张文锋
Owner TIANJIN PORT ENG INST LTD OF CCCC FIRST HARBOR ENG