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CN-118087922-B - Method for reinforcing building structure in nuclear power cold source system

CN118087922BCN 118087922 BCN118087922 BCN 118087922BCN-118087922-B

Abstract

The invention provides a method for reinforcing a building structure in a nuclear power cold source system, and belongs to the technical field of ocean engineering treatment. The invention comprises the following steps of pre-stage on-site measuring scale, preparation of underwater non-segregation grouting material, prefabrication of a three-proofing composite board, construction of an offshore operation working platform, basal plane treatment, installation of the three-proofing composite board, preparation of underwater non-segregation grouting material, grouting of underwater non-segregation grouting material, top sealing and surface cleaning. The three-proofing composite plate formed by the anti-static and anti-electric conduction chemical insulating plate and the anti-marine organism attaching alloy plate is arranged outside the pier column in a surrounding manner, and the underwater non-segregation grouting material is used as a connecting material between the building structure in the sea water and the three-proofing composite plate, so that marine organism attaching corrosion on the surface of the building structure in the sea water can be avoided, electrochemical corrosion with a metal member can be avoided, and damage to the building and the structure caused by the sea water corrosion can be effectively prevented.

Inventors

  • ZHENG ZHE
  • LU DONG
  • FAN ZIJIAN

Assignees

  • 天津核海源科技发展有限公司

Dates

Publication Date
20260508
Application Date
20240403

Claims (10)

  1. 1. The method for reinforcing the building structure in the nuclear power cold source system is characterized by comprising the following steps of: S1, measuring a ruler on the early stage on site; Before the construction of the approach, confirm the installation position of the composite reinforcement system of three proofing in the scene, the measuring scale of the field, confirm the specification size, and position on the surface of the building structure in sea water, wherein, the composite reinforcement system of three proofing includes the inner layer is the underwater and does not isolate the grouting material layer; step S2, preparing underwater non-segregation grouting material; The underwater non-segregation grouting material is used as a connecting material between a building structure and the three-proofing composite board in seawater; s3, prefabricating a three-proofing composite board; punching holes on the surface of the three-proofing composite board by using an electric hand drill, and fixing the binding belt with the three-proofing composite board by using copper wires; S4, building an offshore operation working platform; S5, basal surface treatment; removing dirt on the surface of the building structure in the seawater and roughening the surface of the building structure in the seawater; s6, installing a three-proofing composite board; 1) Respectively punching two sides above the building structure in seawater to install hooks, and hanging a tensioning regulator; 2) Conveying the three-proofing composite board to a construction position through an offshore operation working platform, and erecting the three-proofing composite board; 3) Connecting the three binding belts fixed in advance, and primarily tightening the two ends of the three-proofing composite plate to enable the three-proofing composite plate to surround a building structure in seawater, wherein one end of the three-proofing composite plate is provided with a prefabricated slot, and the other end of the three-proofing composite plate is inserted into the slot, and simultaneously tightening the binding belts again; 4) The three-proofing composite board is lowered to a designated position and balanced, then the three-proofing composite board is installed at the designated position and the position is aligned, and then the three-proofing composite board is bound with a marine building structure by using a binding device so as to be tightly connected with the marine building structure; 5) After all the three-proofing composite boards are installed and fastened, the three-proofing expansion nails are punched and connected and fixed at the vertical lap joint position and the lap joint position of the upper three-proofing composite board and the lower three-proofing composite board; S7, preparing underwater non-segregation grouting material; S8, pouring underwater non-segregation grouting material; S9, sealing the top; after the grouting material is primarily solidified, uniformly smearing the sealing glue on the top of the three-proofing composite board, and sealing the top; Step S10, cleaning the surface; And after the construction is completed, cleaning the residual materials generated by slurry overflow or construction legacy on the surface of the three-protection composite board so as to ensure the surface to be clean.
  2. 2. The method for reinforcing a building structure in a nuclear power cold source system according to claim 1, wherein the chemical insulating plate and the alloy plate are adhered and fixed by epoxy resin glue.
  3. 3. The method for reinforcing a building structure in a nuclear power cold source system according to claim 1, wherein after step S5, before step S6, further comprises: s51, laying ultra-high molecular polyethylene gridding cloth; After the base surface treatment is finished, uniformly distributing ultra-high molecular polyethylene gridding cloth at the position where the three-proofing composite board is required to be installed in the building structure in the sea water.
  4. 4. The method for reinforcing a building structure in a nuclear power cold source system according to claim 1, wherein in step S6), the overlapping length of the upper three-proofing composite plate and the lower three-proofing composite plate is 100-200mm.
  5. 5. The method for reinforcing a building structure in a nuclear power cold source system according to claim 1, wherein in step S6), in the step 5), three-prevention expansion nails are installed with 100-150mm as a standard, and are fixed vertically in a staggered two-longitudinal mode.
  6. 6. The method for reinforcing a building structure in a nuclear power cold source system according to claim 1, wherein the grouting materials which are not isolated under the water in step S8 are specifically: 11 Grouting by a low-pressure injection method, namely, twice grouting, namely, firstly, grouting the bottom, and reinforcing the bottom surface by using a flexible mold, wherein the grouting height is 100-150mm; 22 After the grouting material is primarily solidified, the residual slurry is continuously poured.
  7. 7. The method for reinforcing a building structure in a nuclear power cold source system according to claim 6, wherein in 11), if slurry leakage occurs in the bottom sealing, the flexible mold is repaired in time, and secondary bottom pouring is performed until no slurry leakage occurs.
  8. 8. The method for reinforcing a building structure in a nuclear power cold source system according to claim 6, wherein in 22), if two three-proofing composite boards overlap up and down, after bottom sealing, two times of filling are needed, the first time of filling is performed to an overlapping position, and after primary solidification, the second time of filling is performed to the top.
  9. 9. The method for reinforcing a building structure in a nuclear power cold source system according to claim 6, wherein the lap joint is sealed by using a sealing compound before grouting.
  10. 10. The method for reinforcing a building structure in a nuclear power cold source system according to any one of claims 1 to 9, wherein the thickness of the three-proofing composite plate is 0.1 to 3mm.

Description

Method for reinforcing building structure in nuclear power cold source system Technical Field The invention relates to the technical field of ocean engineering treatment, in particular to a method for reinforcing a building structure in a nuclear power cold source system. Background In a nuclear power cold source system, the safety of cold source water intake is extremely important, and a seawater building structure platform of a water intake comprises a reinforced concrete structure or a steel structure. The three kinds of corrosion including marine organism adhering corrosion, electrochemical corrosion and seawater corrosion are common and common phenomena in the marine engineering. The acid mucus secreted by marine organisms adheres to the concrete surface and metal components, corrodes the concrete surface and metal components, and causes serious harm and damage to the technical indexes of buildings and structures, life expectancy, durability, stability and safety. The damage can seriously damage the building structure platform in the whole sea water under the impact of various loads such as hurricane, sea water and the like, even can cause the collapse of the platform, and directly affects the water taking safety of the nuclear power cold source. Disclosure of Invention In view of the above, the present invention provides a method for reinforcing a building structure in a nuclear power cold source system, which comprises surrounding a three-proofing composite plate formed by an antistatic, anti-electric conduction chemical insulating plate and a marine organism adhesion-preventing alloy plate outside the building structure in seawater, and using underwater non-segregation grouting material as a connecting material between the building structure in seawater and the three-proofing composite plate, so that marine organism adhesion corrosion on the surface of the structure can not occur, and electrochemical corrosion with metal members can not occur any more, and damage to the building and the structure due to seawater corrosion can be effectively prevented. In order to achieve the above purpose, the present invention provides the following technical solutions: A method for reinforcing a building structure in a nuclear power cold source system comprises the following steps: Step S1, earlier on-site measuring ruler Before the construction of the approach, confirm the installation position of the composite reinforcement system of three proofing in the scene, the measuring scale of the field, confirm the specification size, and position on the surface of the building structure in sea water, wherein, the composite reinforcement system of three proofing includes the inner layer is the underwater and does not isolate the grouting material layer; step S2, preparing underwater non-segregation grouting material The underwater non-segregation grouting material is used as a connecting material between a building structure and the three-proofing composite board in seawater; step S3, prefabricating three-proofing composite board Punching holes on the surface of the three-proofing composite board by using an electric hand drill, and fixing the binding belt with the three-proofing composite board by using copper wires; Step S4, building an offshore operation working platform Step S5, basal plane treatment Removing dirt on the surface of the building structure in the seawater and roughening the surface of the building structure in the seawater; Step S6, mounting a three-proofing composite board 1) Respectively punching two sides above the building structure in seawater to install hooks, and hanging a tensioning regulator; 2) Conveying the three-proofing composite board to a construction position through an offshore operation working platform, and erecting the three-proofing composite board; 3) Connecting the three binding belts fixed in advance, and primarily tightening the two ends of the three-proofing composite plate to enable the three-proofing composite plate to surround a building structure in seawater, wherein one end of the three-proofing composite plate is provided with a prefabricated slot, and the other end of the three-proofing composite plate is inserted into the slot, and simultaneously tightening the binding belts again; 4) The three-proofing composite board is lowered to a designated position and balanced, then the three-proofing composite board is installed at the designated position and the position is aligned, and then the three-proofing composite board is bound with a marine building structure by using a binding device so as to be tightly connected with the marine building structure; 5) After all the three-proofing composite boards are installed and fastened, the three-proofing expansion nails are punched and connected and fixed at the vertical lap joint position and the lap joint position of the upper three-proofing composite board and the lower three-proofing composite board; s7, preparing underwater