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CN-224213737-U - Large-volume concrete anti-cracking structure of floor

CN224213737UCN 224213737 UCN224213737 UCN 224213737UCN-224213737-U

Abstract

The utility model relates to the technical field of concrete cracking prevention, in particular to a large-volume concrete cracking prevention structure of a floor. The floor mass concrete anti-cracking structure adopts a reasonable layered pouring method, namely, the coiling concrete adopts a construction method of layered pouring, layered vibrating, an inclined plane, continuous coiling and pouring and one-time top pouring, the thickness of each layer is controlled within 400mm, each layer is staggered by about 5m, the gradient of the inclined plane is 1:6, each pouring layer is staggered front and back, the coiling and pouring are carried out in a layered manner, the upper layer is connected before the initial setting of the lower layer, the combination and quality of the upper layer and the lower layer of the concrete are ensured, the surface of the uppermost layer of the concrete is rolled by an iron roller before the initial setting of the concrete, the surface compactness is enhanced, and after the concrete receives water, the surface layer of the concrete is flattened by a wood trowel for at least three times, so that early plastic shrinkage cracks of the surface layer of the concrete are eliminated.

Inventors

  • GAO JIANMIN
  • LIU XIANGQIN
  • YAO JIAYONG
  • CHEN SUMIN
  • ZHANG QIAN

Assignees

  • 中建海峡建设发展有限公司

Dates

Publication Date
20260508
Application Date
20250403

Claims (8)

  1. 1. The large-volume concrete anti-cracking structure of the floor comprises a concrete filling material main body (1) and is characterized in that an anti-cracking structure (2) is filled in the concrete filling material main body (1); The anti-cracking structure (2) comprises a first filling opening (201), a first reinforcing steel bar layer (202), a second filling opening (203), a second reinforcing steel bar layer (204), a third reinforcing steel bar layer (205), a third filling opening (206), a first reinforcing transverse steel bar (207), a reinforcing socket (208), a second reinforcing transverse steel bar (209) and a third reinforcing transverse steel bar (210), wherein the first reinforcing steel bar layer (202) is filled in an inner ring of the concrete filling material main body (1), the first reinforcing transverse steel bar (207) is welded on the outer ring surface of the first reinforcing steel bar layer (202), the second reinforcing steel bar layer (204) is filled in the inner ring of the concrete filling material main body (1), the second reinforcing transverse steel bar (209) is welded on the outer ring surface of the second reinforcing steel bar layer (204), the third reinforcing transverse steel bar layer (205) is welded on the outer ring surface of the third reinforcing steel bar layer (205).
  2. 2. The large-volume concrete anti-cracking structure of the floor according to claim 1, wherein a first filling opening (201) is formed in the concrete filling material main body (1), and the first filling opening (201) and the first reinforcing steel bar layer (202) are mutually matched in structure.
  3. 3. The large-volume concrete anti-cracking structure of the floor according to claim 1, wherein the inner ring surface of the first reinforcing transverse steel bar (207) is provided with a reinforcing socket (208), and the sizes of the reinforcing socket (208) and the first steel bar layer (202) are matched with each other.
  4. 4. A bulky concrete crack prevention structure for floors as claimed in claim 1, wherein the first reinforcing transverse bars (207) are connected between the first reinforcing bar layer (202) and the concrete filling material body (1), and the first reinforcing transverse bars (207) are plural in number and parallel to each other.
  5. 5. The large-volume concrete anti-cracking structure of the floor according to claim 1, wherein a third filling opening (206) is formed in the concrete filling material main body (1), and the structures of the third filling opening (206) and the third reinforcing steel bar layer (205) are mutually matched.
  6. 6. A bulky concrete crack prevention structure for floors as in claim 1, wherein the second reinforcing transverse bars (209) are connected between the second reinforcing bar layer (204) and the concrete filling material body (1), and the second reinforcing transverse bars (209) are plural in number and parallel to each other.
  7. 7. A bulky concrete crack prevention structure for floors as in claim 1, wherein the third reinforcing transverse bars (210) are connected between the third reinforcing bar layer (205) and the concrete filling material body (1), and the number of the third reinforcing transverse bars (210) is plural and parallel to each other.
  8. 8. The large-volume concrete anti-cracking structure of the floor according to claim 1, wherein a second filling opening (203) is formed in the concrete filling material main body (1), and the second filling opening (203) and the second reinforcing steel bar layer (204) are mutually matched in structure.

Description

Large-volume concrete anti-cracking structure of floor Technical Field The utility model relates to the technical field of concrete anti-cracking, in particular to a large-volume concrete anti-cracking structure of a floor. Background The characteristics of large-volume concrete are that, except that the volume is great, most of all, because the cement hydration heat of concrete is difficult to distribute, under external environment or the restriction of concrete internal force, very easily produce the temperature shrinkage crack, when the structure bears great load, because the effect of drawing the compressive stress, the microcrack begins to expand, and quantity increases gradually. If the load continues to increase, the microcracks begin to build up in series, developing into large cracks until the structure breaks. Temperature stress is generated when the temperature deformation of the concrete structure is restrained, and the concrete is cracked when the temperature stress exceeds the tensile strength of the concrete at the same time. In summary, most of the conventional large-volume concrete structures are underground continuous walls, back plate foundations, box foundations and the like, so that one of the main problems after cracking is the problem of basement leakage, which is often difficult to process, and has additional effects on the use of the building, such as repair and leakage stoppage of the structure, so that the structure is difficult to process, the investment is huge, the delivery and use time of the engineering is prolonged, and the use functions of the building are reduced. Sometimes even because of the phenomenon that the leakage blocking cost is higher than the civil engineering cost in the using process of the building, the rigidity of the building structure is reduced, so that the floor mass concrete anti-cracking structure is particularly needed. Disclosure of utility model The utility model aims to provide a large-volume concrete anti-cracking structure of a floor, which aims to solve the problems that the traditional large-volume concrete structure proposed in the background technology is mostly a diaphragm wall, a back plate foundation, a box foundation and the like, so that one of the main problems after cracking is the problem of leakage of a basement, the problem is often difficult to treat, and additional effects are brought to the use of a building, such as repairing and plugging of the structure, the treatment is difficult, the investment is huge, the delivery and use time of engineering is prolonged, and the use functions of the building are reduced. Sometimes even because the leakage is stopped for many times in the using process of the building, the phenomenon that the leakage stopping cost is higher than the civil engineering cost occurs, and the rigidity of the building structure is reduced, so that the problem of the large-volume concrete anti-cracking structure of the floor is particularly needed. In order to achieve the aim, the utility model provides the technical scheme that the large-volume concrete anti-cracking structure of the floor comprises a concrete filling material main body, wherein the anti-cracking structure is filled in the concrete filling material main body; The anti-cracking structure comprises a first filling opening, a first reinforcing steel bar layer, a second filling opening, a second reinforcing steel bar layer, a third filling opening, a first reinforcing transverse steel bar, a reinforcing socket, a second reinforcing transverse steel bar and a third reinforcing transverse steel bar, wherein the first reinforcing steel bar layer is filled in an inner ring of a concrete filling material main body, the first reinforcing transverse steel bar is welded on the outer ring surface of the first reinforcing steel bar layer, the second reinforcing steel bar layer is filled in the inner ring of the concrete filling material main body, the second reinforcing transverse steel bar is welded on the outer ring surface of the second reinforcing steel bar layer, the third reinforcing steel bar layer is filled in the inner ring of the concrete filling material main body, and the third reinforcing transverse steel bar is welded on the outer ring surface of the third reinforcing steel bar layer. Preferably, a first filling opening is formed in the concrete filling material main body, and structures between the first filling opening and the first reinforcing steel bar layer are mutually matched. Preferably, the inner ring surface of the first reinforcing transverse reinforcement is provided with a reinforcing socket, and the sizes of the reinforcing socket and the first reinforcement layer are matched with each other. Preferably, the first reinforcing transverse bars are connected between the first reinforcing layer and the concrete filling material body, and the number of the first reinforcing transverse bars is a plurality of and mutually parallel. Prefer