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CN-121992960-A - Newly added sandwich structure of existing structure and construction method thereof

CN121992960ACN 121992960 ACN121992960 ACN 121992960ACN-121992960-A

Abstract

The invention relates to the field of building construction engineering, in particular to a new sandwich structure of an existing structure and a construction method thereof. The newly-added sandwich structure comprises a newly-added floor slab arranged above the opening and another newly-added floor slab arranged below the opening, wherein a plurality of newly-added structural beams are arranged on the two newly-added floor slabs, the newly-added floor slab and the newly-added structural beams are of reinforced concrete structures and are connected with the existing structure, a newly-added structural wall is arranged between the two newly-added floor slabs, the newly-added structural wall is arranged at the edge of the design range of the newly-added sandwich structure, the newly-added structural wall is of a reinforced concrete structure, and the newly-added structural wall and the newly-added floor slab are enclosed together to form a newly-added sandwich space. The novel sandwich structure has the beneficial effects that the original structure floor slab within the design range of the novel sandwich structure is chiseled, so that the design height of the novel sandwich structure breaks through the height between the upper floor slab and the lower floor slab, and the formed novel sandwich structure can accommodate more and larger equipment.

Inventors

  • WANG FANGLIANG
  • LIU JIAWEI
  • GAO NING
  • CHEN ZHENGJIE
  • GUAN YUYANG
  • ZHAO HUIBIN

Assignees

  • 中建八局科技建设有限公司

Dates

Publication Date
20260508
Application Date
20260323

Claims (10)

  1. 1. The utility model provides a newly-increased intermediate layer structure of existing structure, existing structure includes former structure floor (1), and the position that corresponds with newly-increased intermediate layer structure's design scope on former structure floor (1) is equipped with the opening, its characterized in that, newly-increased intermediate layer structure includes: A new floor slab (2) arranged above the opening and another new floor slab (2) arranged below the opening, wherein a plurality of new structure beams (8) are arranged on the two new floor slabs (2), and the new floor slab (2) and the new structure beams (8) are of reinforced concrete structures and are connected with the existing structures; The novel structure wall (3) is arranged between the two novel floor slabs (2), the novel structure wall (3) is arranged at the edge of the design range of the novel interlayer structure, the novel structure wall (3) is of a reinforced concrete structure, and the novel structure wall (3) and the novel floor slabs (2) are enclosed together to form a novel interlayer space.
  2. 2. The added sandwich structure of the existing structure according to claim 1, wherein the existing structure further comprises an original structure wall (4), an original structure column (5) and an original structure beam (6); the new floor slab (2) and the new structural beam (8) are connected to corresponding original structural columns (5) within the design range of the new sandwich structure; The external surface that the former structure post (5) that corresponds with newly-increased floor (2) and newly-increased structure roof beam (8) are connected one side is equipped with outsourcing structure (7), newly-increased floor (2) with newly-increased structure roof beam (8) are through outsourcing structure (7) with former structure post (5).
  3. 3. A sandwich construction of an existing structure according to claim 2, characterized in that the outer cladding structure (7) comprises: the first lacing wires are horizontally arranged, one end of each first lacing wire is anchored into the original structural column (5) and connected with the steel bars in the original structural column (5), a plurality of first lacing wires are distributed at intervals up and down, and a plurality of first lacing wires are distributed at intervals; the stirrups with different sizes are arranged on the outer side of the original structural column (5) in a surrounding mode and are connected with the first lacing wires; And the concrete is arranged on the outer surface corresponding to the original structural column (5) and is used for burying the first lacing wires and the stirrups.
  4. 4. The added sandwich structure of an existing structure according to claim 2, characterized in that the cross-sectional dimension of the end of the added structural beam (8) connected to the original structural column (5) is larger than the cross-sectional dimension of the added structural beam (8), and the number of reinforcing bars in the end is larger than the number of reinforcing bars in the added structural beam (8).
  5. 5. A new sandwich construction of an existing structure according to claim 2, characterized in that if the original structural beam (6) is located at the design position of the new structural wall (3), the original structural beam (6) is not chiseled off and the new structural wall (3) is connected to the original structural beam (6).
  6. 6. A new sandwich construction of an existing structure according to claim 5, characterized in that the ends of the corresponding rebars in the new structure wall (3) are anchored into the new structure beams (8) or the original structure beams (6).
  7. 7. An add-on sandwich construction of an existing structure according to claim 2, characterized in that the add-on structural wall (3) has at least one.
  8. 8. A new sandwich construction of an existing structure according to claim 1, characterized in that the reinforcing bars inside the new structural beam (8) comprise: a plurality of longitudinal ribs which are arranged at intervals are distributed along the length direction of the newly-added structural beam (8); The stirrups are matched with the cross section of the newly added structural beam (8) and sleeved on the longitudinal ribs; The end parts of the second lacing wires are bent into a U shape, the end parts of the second lacing wires are hooked on corresponding longitudinal ribs, and the second lacing wires are fixedly connected with the longitudinal ribs.
  9. 9. A method of constructing a new sandwich construction of an existing structure according to claim 1, comprising the steps of: s1, chiseling out an original structure floor slab (1) within the design range of the newly added sandwich structure according to a design drawing; S2, constructing a new floor slab (2) and a new structural beam (8), and anchoring reinforcing steel bars inside the new floor slab (2) and the new structural beam (8) into the existing structure; s3, constructing a newly-added structure wall (3), anchoring the steel bars in the newly-added structure wall (3) into the existing structure or the newly-added floor slab (2) or the newly-added structure beam (8), and further completing the construction of the newly-added sandwich structure.
  10. 10. The construction method of the newly added sandwich structure of the existing structure according to claim 9, characterized in that the existing structure also comprises an original structure wall (4), an original structure column (5) and an original structure beam (6); Before the step S2, roughening the surfaces of the original structural columns (5), the newly added floor slabs (2) and the to-be-connected parts of the newly added structural beams (8), and anchoring the end parts of the reinforcing steel bars into the original structural columns (5) when the reinforcing steel bars are distributed.

Description

Newly added sandwich structure of existing structure and construction method thereof Technical Field The invention relates to the field of building construction engineering, in particular to a new sandwich structure of an existing structure and a construction method thereof. Background The building interlayer is a local layer arranged between two natural layers of a house, and is also called a technical layer or an equipment layer. The central function of the system is to intensively arrange public pipeline equipment and professional facilities, including central air conditioners, elevator equipment, power distribution systems and the like. Conventional building interlayers are typically placed between two adjacent floors, one above the other, so that the building interlayer is formed to a height less than the spacing of the original adjacent floors, and cannot accommodate installed equipment when the equipment size is greater than the spacing of the adjacent floors. Disclosure of Invention The invention aims to overcome the defects of the prior art, provide a newly added sandwich structure of the existing structure and a construction method thereof, and solve the problems that the existing building sandwich is limited in height and cannot accommodate equipment with larger size. The technical scheme for achieving the purpose is as follows: the invention provides a new sandwich structure of an existing structure, the existing structure comprises a floor slab with an original structure, an opening is arranged at a position corresponding to the design range of the new sandwich structure on the corresponding floor slab with the original structure, and the new sandwich structure comprises: A new floor slab arranged above the opening and another new floor slab arranged below the opening, wherein a plurality of new structure beams are arranged on the two new floor slabs, and the new floor slab and the new structure beams are of reinforced concrete structures and are connected with the existing structure; The novel structure wall is arranged between the two novel floor slabs, the novel structure wall is arranged at the edge of the design range of the novel interlayer structure, the novel structure wall is of a reinforced concrete structure, and the novel structure wall and the novel floor slabs are enclosed together to form a novel interlayer space. Further, the existing structure also comprises an original structure wall, an original structure column and an original structure beam; The new floor slab and the new structural beam are connected to the original structural column corresponding to the new sandwich structure design range; The external surface of the corresponding side, where the original structural column is connected with the newly-added floor slab and the newly-added structural beam, is provided with an outer wrapping structure, and the newly-added floor slab is connected with the original structural column through the outer wrapping structure. Further, the outsourcing structure includes: The first lacing wires are horizontally arranged, one end of each first lacing wire is anchored into the original structural column and connected with the steel bars in the original structural column, a plurality of first lacing wires are distributed at intervals up and down, and a plurality of first lacing wires are distributed at intervals; The stirrups with different sizes are arranged on the outer side of the original structural column in a surrounding mode and are connected with the first lacing wires; and the concrete is arranged on the outer surface corresponding to the original structural column and is used for burying the first lacing wires and the stirrups. Further, the cross section size of the end, connected with the original structural beam, of the newly-increased structural beam is larger than that of the newly-increased structural beam, and the number of the reinforcing steel bars in the end part is larger than that of the reinforcing steel bars in the newly-increased structural beam. Further, if the original structural beam is located at the designed position of the newly-added structural wall, the original structural beam is not chiseled, and the newly-added structural wall is connected with the original structural beam. Further, the end parts of the corresponding steel bars in the newly-added structural wall are anchored into the newly-added structural beam or the original structural beam. Further, the added structural wall is provided with at least one. Further, the reinforcing steel bars inside the newly added structural beam comprise: A plurality of longitudinal ribs arranged at intervals and distributed along the length direction of the newly-added structural beam; the stirrups are matched with the cross section of the newly added structural beam and sleeved on the longitudinal ribs; The end parts of the second lacing wires are bent into a U shape, the end parts of the second lacing wires are hoo