Newly-added interlayer structure for transformation of high empty space

Abstract

The utility model discloses a newly-added sandwich structure for transformation of a high hollow space, which comprises the high hollow space formed by existing concrete columns and existing concrete beams. A newly-added longitudinal steel beam and a newly-added transverse steel beam in the newly-added sandwich structure are arranged in a cross-shaped mode and are connected with the existing concrete column and the existing concrete beam through matching of an inverted-cone-shaped adhesive anchor bolt, a connecting plate, a bolt connecting piece and a horizontal long round hole. The long round hole hinging mode of the newly-added steel beam can effectively reduce transmission of horizontal force (earthquake force), even the horizontal force (earthquake force) can not be transmitted, the earthquake influence of the newly-added steel beam on the existing concrete beam and the existing concrete column can be effectively reduced, newly-added floor steel bars are completely not connected with an original structure, and the structure is simple. The newly-added floor only has certain rigidity contribution to the newly-added steel beam, has no influence on the rigidity of the existing concrete beam and has no limitation on the existing concrete column.

Description

Technical Field

[0001] The utility model relates to the technical field of high-ceiling space reconstruction, in particular to a newly added mezzanine structure for high-ceiling space reconstruction. Background Art

[0002] Existing factories, office buildings, villas, houses and other buildings often have some tall empty spaces. According to some renovation requirements of users, it is necessary to convert the tall space from one floor to two floors, that is, to add a new mezzanine. The traditional method of mezzanine beams and floor slabs will affect the seismic performance of the existing concrete beams and columns in the tall space, and will also affect the seismic performance parameters of the overall structure, such as the period ratio, displacement angle, displacement ratio, etc. of the structure. Some users only purchased part of the building and are not users of the entire building, but the impact of local renovation on the seismic performance of the overall structure cannot be ignored, affecting the seismic safety of the entire building. When an earthquake occurs, the property safety of the users of the entire building is affected. How to reduce or avoid the occurrence of the above situation through technical improvements is an urgent problem to be solved by those skilled in the art. In view of this, in-depth research on the above problems has led to the creation of this case. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a high-ceiling space reconstruction and a newly added mezzanine structure, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-rise space is transformed into a new mezzanine structure, including a high-rise space composed of existing concrete columns and existing concrete beams, the new longitudinal steel beams and the new transverse steel beams in the new mezzanine structure are arranged in a cross shape and are connected to the existing concrete columns and the existing concrete beams through inverted cone-shaped adhesive anchors, connecting plates, bolt connectors, and horizontal oblong holes, new concrete floor slabs are laid on the new longitudinal steel beams and the new transverse steel beams, expansion joints are set between the new concrete floor slabs and the existing concrete columns and the existing concrete beams, and the expansion joints are filled with 30mm thick extruded boards.

[0005] The utility model provides a new mezzanine structure for the reconstruction of high-ceiling space.

[0006] Beneficial effects:

[0007] 1. The newly added steel beams are connected to the existing concrete beams and columns through inverted cone adhesive anchor bolts, connecting plates, bolt connectors and horizontal oblong holes. The "oblong hole hinge" method of the newly added steel beams can effectively reduce the transmission of horizontal forces (seismic forces), or even not transmit horizontal forces (seismic forces), which can effectively reduce the seismic impact of the newly added steel beams on the existing concrete beams and columns;

[0008] 2. The middle span of the continuous floor is designed as a one-way floor with supports on both sides, and the side span of the continuous floor is designed as a cantilever slab. Expansion joints are set between the new concrete floor and the existing concrete beams and columns, and filled with 30mm thick extruded boards. The new floor reinforcement is completely unconnected to the original structure. The new floor only contributes to a certain stiffness of the new steel beams, has no effect on the stiffness of the existing concrete beams, and imposes no restrictions on the existing concrete columns. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the plan structure of a newly added mezzanine structure in a high-ceiling space reconstruction according to the utility model.

[0010] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional structure at the AA position.

[0011] Figure 3 For this utility model Figure 1 Schematic diagram of the cross-sectional structure at the middle BB position.

[0012] Figure 4 For this utility model Figure 1 Schematic diagram of the cross-sectional structure at the CC position.

[0013] Figure 5 It is a schematic diagram of the plan structure of an existing tall and large space house layout in a specific application example of the utility model.

[0014] Figure 6 It is a schematic diagram of the plan structure after a mezzanine structure is added to a partial renovation of an existing large-space house in a specific application example of the utility model.

[0015] In the figure: 1. Existing concrete columns; 2. Existing concrete beams; 3. New longitudinal steel beams; 4. New transverse steel beams; 5. Inverted cone adhesive anchor bolts; 6. Bolted connectors; 7. New concrete floor slabs; 8. Expansion joints; 9. Extruded boards; 10. Existing concrete floor slabs. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0018] Embodiment: In conjunction with the specification Figure 1-4 It can be seen that this scheme specifically designs a new mezzanine structure for the reconstruction of high-rise empty space, including a high-rise empty space composed of an existing concrete column 1 and an existing concrete beam 2. The new longitudinal steel beam 3 and the new transverse steel beam 4 in the new mezzanine structure are arranged in a cross shape and connected to the existing concrete column 1 and the existing concrete beam 2 through inverted cone adhesive anchor bolts 5, bolt connectors 6, and horizontal oblong holes. New concrete floor slabs 7 are laid on the new longitudinal steel beams 3 and the new transverse steel beams 4. Expansion joints 8 are set between the new concrete floor slabs 7 and the existing concrete columns 1 and the existing concrete beams 2. The expansion joints 8 are filled with 30mm thick extruded boards 9. In this design, the new steel beams are connected to the existing concrete beams 2 and the existing concrete columns 1 through inverted cone adhesive anchor bolts 5, connecting plates, bolt connectors 6 and horizontal oblong holes. The "oblong hole hinged" method of the new steel beams can effectively reduce the transmission of horizontal forces (seismic forces). The new concrete floor slab is designed to have a certain rigidity contribution to the new steel beam, has no influence on the rigidity of the existing concrete beam, and imposes no restriction on the existing concrete column. The middle span of the continuous floor slab is designed as a one-way floor slab with supports on both sides, and the side span of the continuous floor slab is designed as a cantilever slab. This provides convenience for partial renovation for individual users who have only purchased a part of the building but not the entire building. After the renovation, the influence of the new mezzanine structure on the seismic performance of the overall structure is minimized, thereby improving the seismic safety of the entire building and avoiding affecting the property safety of the users of the entire building during an earthquake. The application range is wide.

[0019] Examples of application of this patent: See the attached manual Figure 5In a four-story frame structure industrial park building, the first floor originally had a large space in part, and the two floors were full height. According to the functional requirements, some of the A households added a floor slab to become two floors. Since the user of the A household only purchased a part of the building, not the user of the entire building, but the traditional method was used, the impact of the local renovation on the seismic performance of the overall structure cannot be ignored, affecting the seismic safety of the entire building. When an earthquake occurs, the property safety of the users of the entire building is affected. In addition, the renovation plans and renovation time of the four owners are not unified. Household A will be renovated to add a mezzanine, and whether households B, C, and D will be renovated and how to renovate are all unknown. For example, plan 1: only household A will add a mezzanine, and the other three households will not. Plan 2: households A and B will add a mezzanine, and households C and D will not add, ..., there will be many such permutations and combinations, and the internal renovation plan cannot be listed, which will cause trouble for the design unit that only accepts the renovation commission of household A. According to the traditional method, only the mezzanine was added to Household A. The calculation conclusion is that the stiffness of the left side of the structure has increased, and the structural indicators such as period ratio, displacement angle, and displacement ratio are all beyond the reasonable range. The original design reinforcement of some components of the overall structure does not meet the requirements, and the components that do not meet the requirements are concentrated in Household D. However, Household D is not the client. The impact of the renovation of Household A on the seismic resistance of Household D cannot be compensated by structural reinforcement. The possibility of various solutions can no longer be better realized by traditional design methods. After adopting this patent, refer to the attached manual Figure 6 , according to experience, the newly added steel beams and concrete floor slabs do not transmit horizontal forces, but only vertical forces, and do not affect the seismic performance of existing concrete beams and columns. The impact of this method on the seismic performance of the overall structure in local renovation can be ignored, and it does not affect the seismic safety of the entire building. It only needs to reinforce the components around the added floor slabs, which reduces the amount of reinforcement, greatly reduces the renovation cost, and reduces the "trouble" brought to other users.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-ceiling space reconstruction and newly added mezzanine structure, comprising a high-ceiling space composed of existing concrete columns (1) and existing concrete beams (2), characterized in that: The newly added longitudinal steel beams (3) and the newly added transverse steel beams (4) in the newly added sandwich structure are arranged in a cross shape and connected to the existing concrete columns (1) and the existing concrete beams (2) through inverted cone-shaped adhesive anchor bolts (5), connecting plates, bolt connectors (6), and horizontal oblong holes. A newly added concrete floor slab (7) is laid on the newly added longitudinal steel beams (3) and the newly added transverse steel beams (4), and an expansion joint (8) is arranged between the newly added concrete floor slab (7) and the existing concrete columns (1) and the existing concrete beams (2).

2. The method of adding a mezzanine structure to a high-ceiling space according to claim 1, characterized in that: The expansion joint (8) is filled with a 30 mm thick extruded board (9).

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