A kind of structure and construction method of concrete surface layer reinforced by frp bars of breast wall of marine engineering
A technology of reinforced concrete and reinforced concrete, which is applied in the direction of coastline protection, jetty, pier, etc., can solve the problems of reducing the service life of steel bars, corrosion and peeling damage of the interface between concrete and steel bars, harsh marine environment, etc., to prevent steel corrosion , enhance the surface stiffness, reduce the effect of deformation and non-uniformity
Active Publication Date: 2015-09-09
CHINA CONSTR EIGHT ENG DIV CORP LTD
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Problems solved by technology
Due to the harsh marine environment, the requirements for concrete cracks are high. At the same time, the penetration of chloride ions can reduce the service life of steel bars, causing corrosion and peeling damage at the interface between concrete and steel bars.
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[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0025] refer to Figure 1~6 As shown, in the FRP-reinforced concrete surface structure of the marine breast wall of the present invention, the breast wall is mainly composed of the breast wall concrete base below sea level and the breast wall concrete surface above sea level. The breast wall concrete surface layer refers to the surface layer range with a thickness of 30 cm from the elevation of the parapet wall top surface; the parapet wall concrete base layer refers to the part below the surface layer to the top surface of the submarine caisson 20, and its height is determined by the design document. Wherein the breast wall concrete base adopts traditional reinforced concrete base 11, and adopts FRP bar to replace traditional steel bar in the breast wall concrete surface course to form a FRP bar reinforced concrete surface course 12,...
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The invention discloses a marine engineering breast wall FRP rib reinforce concrete pavement structure and a construction method thereof. A breast wall comprises a reinforced concrete base. A plurality of vertical reinforcements are reserved on the top of the reinforced concrete base, an FRP rib mesh sheet layer is bound on the vertical reinforcements, and concrete is poured on the FRP rib mesh sheet layer. An FRP rib reinforced concrete pavement is formed on the top of the reinforced concrete base. Through utilization of low density, nonrust performance and high durability of FRP ribs, the reinforcements are replaced by FRP rib mesh sheets in the base of the breast wall, so that the surface stiffness of the concrete is reinforced, rusting of steel materials is avoided, and the development of shrinkage crack of the concrete at the initial stage is resisted. Through arrangement of supporting frames, the flexible deformation and nonuniformity in the mesh sheet installing process are reduced. Due to the fact that a layered casting mode is adopted, the phenomena that the poured concrete is too thick, and the concrete generates excessive high hydration heat in the condensing process to cause crack are prevented.
Description
technical field [0001] The invention relates to the FRP tendon design of marine concrete at breast wall parts in coastal areas, in particular to an FRP reinforced concrete surface layer structure and construction method of marine breast wall. Background technique [0002] At present, in order to resist the collision between waves and ships, the breast wall of marine engineering often adopts reinforced concrete structure. Due to the harsh marine environment, the requirements for concrete cracks are high. At the same time, the penetration of chloride ions can reduce the service life of steel bars, causing corrosion and peeling damage at the interface between concrete and steel bars. Due to its low density, non-corrosion and high durability, FRP bars can replace steel bars or partially replace steel bars, thereby enhancing the rigidity of the concrete surface, preventing steel corrosion, and resisting the development of initial concrete shrinkage cracks. [0003] At present, t...
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IPC IPC(8): E02B3/06E02B3/12
Inventor 马明磊王桂玲严震咸贵军韩玉辉潘云峰吴贞平杨胜杰
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD