Lift shaft structure

Abstract

The utility model discloses an elevator shaft structure, which belongs to the technical field of building construction, and adopts the technical scheme that the elevator shaft structure comprises an existing concrete wall body under the ground and a floor frame beam above the ground, a plurality of first shaft steel beams are arranged on each layer at intervals, a plurality of second shaft steel beams are arranged between every two vertically-adjacent layers at intervals, the ends, close to the curtain wall, of the first shaft steel beams on every two vertically-adjacent layers are connected through shaft steel columns, and the ends, away from the curtain wall, of the first shaft steel beams are fixedly connected with floor ring beams. The ends, close to the curtain wall, of the first shaft steel beams are fixedly connected with floor frame beams, constructional columns corresponding to the shaft steel columns are poured between the ring beams of the upper layer and the lower layer which are adjacent, the ends, close to the curtain wall, of the second shaft steel beams are fixedly connected with the shaft steel columns, and the ends, away from the curtain wall, of the second shaft steel beams are fixedly connected with the constructional columns. The ends, close to the curtain wall, of the first hoistway steel beam and the second hoistway steel beam are fixed to the existing concrete wall. The elevator shaft structure has the advantage that the elevator shaft structure is provided.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to an elevator shaft structure. Background Art

[0002] For renovation projects such as hotels, office buildings and commercial buildings, it is often necessary to add new elevator shafts to increase the number of elevators to facilitate personnel access. When constructing a new elevator shaft, it is necessary to cut and reinforce the original structural beams and slabs of the new elevator shaft so that the new elevator shaft can be connected from top to bottom to facilitate the operation of the elevator; in general, "reinforced concrete beams with an interval of about 2m above and below", reinforced concrete columns, and masonry brick blocks should be set around the shaft according to the requirements of elevator construction to facilitate the installation and fixing of the elevator guide rail bracket. In order to facilitate the setting of elevator vestibule corridors and meet the requirements of floor fire zoning, new elevator shafts are generally set up near the exterior walls; when the exterior walls are curtain walls, in order to facilitate the setting of reinforced concrete beams and columns and masonry brick blocks during construction, the corresponding exterior curtain walls are usually dismantled from top to bottom to facilitate the embedding of reinforced concrete beams and columns, formwork, steel bar binding, concrete pouring, formwork removal and brick block laying. After the construction of reinforced concrete beams and columns and brick blocks for the newly added elevator shaft is completed, the exterior curtain walls of the corresponding parts will be reinstalled, which will greatly increase the construction cost, extend the construction period, increase the labor cost and measures cost, and also bring more safety hazards during construction. Utility Model Content

[0003] The utility model aims to provide an elevator shaft structure.

[0004] The utility model is realized by the following measures: an elevator shaft structure, characterized in that it comprises an existing concrete wall below the ground and a floor frame beam above the ground;

[0005] A plurality of shaft steel beams 1 are arranged at intervals on each floor, and a plurality of shaft steel beams 2 are arranged at intervals in the middle of two adjacent floors. The ends of the shaft steel beams 1 of the two adjacent floors are connected by shaft steel columns at the ends close to the curtain wall, and the ends of the shaft steel beams 1 away from the curtain wall are fixedly connected to the floor ring beams, and the ends of the shaft steel beams 1 close to the curtain wall are fixedly connected to the floor frame beams. Structural columns corresponding to the shaft steel columns are cast between the ring beams of the two adjacent floors, and the ends of the shaft steel beams 2 close to the curtain wall are fixedly connected to the shaft steel columns, and the ends of the shaft steel beams 2 away from the curtain wall are fixedly connected to the structural columns;

[0006] The ends of the shaft steel beam 1 and the shaft steel beam 2 below the ground close to the curtain wall are both fixed on the existing concrete wall.

[0007] Furthermore, a connecting steel plate 1 is embedded on one side of the structural column close to the steel beam, and a plurality of steel members extending out of the structural column are arranged on the connecting steel plate 1, and the steel members are provided with reinforcing steel plates by perforation plug welding; the steel members can be screws or steel bars.

[0008] The shaft steel beam 1 and the shaft steel beam 2 are fixed on the connecting steel plate 1.

[0009] Furthermore, a connecting steel plate 2 is fixedly provided on the existing concrete wall by a plurality of inverted cone-shaped chemical anchor bolts, and a shaft steel beam 1 and a shaft steel beam 2 below the ground are fixed on the connecting steel plate 2.

[0010] Furthermore, fillet welds are used to connect the shaft steel beam 1 and the connecting steel plate 2, the shaft steel beam 2 and the connecting steel plate 2, the shaft steel beam 1 and the connecting steel plate 1, and the shaft steel beam 2 and the connecting steel plate 1, and the weld height is generally not less than 6 mm.

[0011] Furthermore, the inverted cone chemical anchor bolts are provided with 6 pieces, the design value of the shear bearing capacity of a single piece is not less than 50KN, and the design value of the tensile bearing capacity of a single piece is not less than 27KN. The inverted cone chemical anchor bolts are generally selected in the model of M16X125.

[0012] Furthermore, except for the structural columns on the lowest floor, the upper and lower ends of the structural columns on each other floor are connected to the floor ring beam through longitudinal steel bars. The depth of the longitudinal steel bars extending into the floor ring beam is not less than 15 times the diameter of the longitudinal steel bars. Four longitudinal steel bars are generally provided.

[0013] Furthermore, the diameter of the longitudinal steel bar is not less than 14 mm, the diameter of the stirrups in the structural column is not less than 8 mm, and the upper and lower spacing is generally 200 mm.

[0014] Furthermore, a steel bar grouting beam is arranged between two adjacent structural columns on the same floor according to the elevation of the elevator door.

[0015] Furthermore, the spacing between the hoistway steel beam 1, the hoistway steel beam 2, the structural columns and the steel columns in each floor is generally determined according to the size of the elevator.

[0016] Construction method:

[0017] According to construction needs, the existing concrete structures that hinder the construction should be demolished and cut. The operation should usually be carried out from top to bottom. Several layers should not be demolished or cut at the same time, and vertical cross operations are not allowed. The demolition and cutting order of the same layer is inside first and then outside, and slabs first and then beams. During the demolition and cutting operations, effective protection and falling control measures should be taken for the demolished and cut objects.

[0018] After the demolition and cutting are completed, the new elevator shaft structure is installed. A shaft steel beam and a shaft steel column are set in the shaft near the curtain wall, and a steel bar grouting structural column is set in the shaft away from the outer curtain wall. The shaft steel column near the outer curtain wall is connected to the corresponding structural column away from the curtain wall through the shaft steel beam.

[0019] The beneficial effects of the technical solution provided by the embodiment of the utility model are: a new elevator shaft structure is used during construction, and there is no need to dismantle the corresponding outer curtain wall from top to bottom, which effectively solves the problem of dismantling the outer curtain wall when constructing a new elevator shaft close to the outer curtain wall in the renovation project, reduces construction costs, speeds up construction progress, and reduces safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present utility model, a brief introduction will be given to the drawings used in the embodiments below. Obviously, the drawings listed below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a side view of an elevator shaft structure in an embodiment of the utility model;

[0022] Figure 2 It is a side view of the underground level;

[0023] Figure 3 It is a side view of part of the structure on the ground floor;

[0024] Figure 4 This is the layout of the shaft steel beam 1 on the -2 and -1 floors;

[0025] Figure 5 This is the layout diagram of the steel beam 1 of the above-ground well;

[0026] Figure 6 This is the layout of the second steel beam of the shaft in the upper half of the ground floor;

[0027] Figure 7 It is a structural schematic diagram of connecting steel plate 1 and its related parts;

[0028] Figure 8 It is a schematic diagram of the cross section of the hoistway steel beam 1;

[0029] Fig. 9 It is a structural schematic diagram of connecting steel plate 2 and its related parts;

[0030] Fig.10 It is a schematic diagram of the cross section of the shaft steel beam 2.

[0031] In the attached drawings, the components represented by each number are listed as follows: 1. Existing concrete wall; 2. Shaft steel beam 2; 3. Shaft steel beam 1; 4. Shaft steel column; 5. Structural column; 6. Floor ring beam; 7. Floor frame beam; 8. Curtain wall; 9. Connecting steel plate 1; 10. Steel member; 11. Reinforcement steel plate; 12. Connecting steel plate 2; 13. Inverted cone chemical anchor. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. Of course, the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] See also Figure 1-Figure 10 , an elevator shaft structure, characterized in that it includes an existing concrete wall 1 below the ground and a floor frame beam 7 above the ground;

[0034] A number of shaft steel beams 3 are arranged at intervals on each floor, and a number of shaft steel beams 2 are arranged at intervals in the middle of the upper and lower adjacent floors. The ends of the shaft steel beams 3 of the upper and lower adjacent floors close to the curtain wall 8 are connected by shaft steel columns 4, and the ends of the shaft steel beams 3 away from the curtain wall 8 are fixedly connected to the floor ring beam 6, and the ends of the shaft steel beams 3 close to the curtain wall 8 are fixedly connected to the floor frame beam 7. Structural columns 5 corresponding to the shaft steel columns 4 are cast between the ring beams of the upper and lower adjacent floors, and the ends of the shaft steel beams 22 close to the curtain wall 8 are fixedly connected to the shaft steel columns 4, and the ends of the shaft steel beams 22 away from the curtain wall 8 are fixedly connected to the structural columns 5;

[0035] The ends of the shaft steel beam 1 3 and the shaft steel beam 2 2 below the ground close to the curtain wall 8 are both fixed on the existing concrete wall 1 .

[0036] A connecting steel plate 9 is embedded on one side of the structural column 5 close to the steel beam, and a plurality of steel members 10 extending out of the structural column 5 are arranged on the connecting steel plate 9. The steel members 10 are provided with reinforcing steel plates 11 by perforation plug welding; the steel members 10 may be screws or steel bars.

[0037] The shaft steel beam 1 3 and the shaft steel beam 2 2 are fixed on the connecting steel plate 1 9.

[0038] A connecting steel plate 2 12 is fixedly provided on the existing concrete wall 1 through a plurality of inverted cone-shaped chemical anchor bolts 13 , and a shaft steel beam 1 3 and a shaft steel beam 2 2 below the ground are fixed on the connecting steel plate 2 12 .

[0039] Fillet welds are used to connect the shaft steel beam 13 and the connecting steel plate 12, the shaft steel beam 22 and the connecting steel plate 12, the shaft steel beam 3 and the connecting steel plate 9, and the shaft steel beam 22 and the connecting steel plate 9, and the weld height is generally not less than 6mm.

[0040] There are 6 inverted cone-shaped chemical anchor bolts 13, and the design value of the shear bearing capacity of a single bolt is not less than 50KN, and the design value of the tensile bearing capacity of a single bolt is not less than 27KN. The inverted cone-shaped chemical anchor bolt 13 is generally selected as the model of M16X125.

[0041] Except for the bottom structural column 5, the upper and lower ends of each other structural column 5 are connected to the floor ring beam 6 through longitudinal steel bars. The depth of the longitudinal steel bars extending into the floor ring beam 6 is not less than 15 times the diameter of the longitudinal steel bars. Four longitudinal steel bars are generally provided.

[0042] The diameter of the longitudinal steel bar shall not be less than 14 mm, the diameter of the stirrups in the structural column 5 shall not be less than 8 mm, and the upper and lower spacing is generally 200 mm.

[0043] A steel bar grouting beam is arranged between two adjacent structural columns 5 on the same floor according to the elevation of the elevator door.

[0044] Construction method:

[0045] According to construction needs, the existing concrete structures that hinder the construction should be demolished and cut. The operation should usually be carried out from top to bottom. Several layers should not be demolished or cut at the same time, and vertical cross operations are not allowed. The demolition and cutting order of the same layer is inside first and then outside, and slabs first and then beams. During the demolition and cutting operations, effective protection and falling control measures should be taken for the demolished and cut objects.

[0046] After the dismantling and cutting are completed, the newly added elevator shaft structure is installed. A shaft steel beam 3 and a shaft steel column 4 are set in the shaft near the curtain wall 8, and a steel bar grouting structural column 5 is set in the shaft away from the outer curtain wall 8. The shaft steel column 4 near the outer curtain wall 8 is connected to the corresponding structural column 5 away from the curtain wall 8 through the shaft steel beam.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator shaft structure, characterized in that: Includes existing concrete walls below ground level and floor frame beams above ground level; A plurality of shaft steel beams 1 are arranged at intervals on each floor, and a plurality of shaft steel beams 2 are arranged at intervals in the middle of two adjacent floors. The ends of the shaft steel beams 1 of the two adjacent floors are connected by shaft steel columns at the ends close to the curtain wall, and the ends of the shaft steel beams 1 away from the curtain wall are fixedly connected to the floor ring beams, and the ends of the shaft steel beams 1 close to the curtain wall are fixedly connected to the floor frame beams. Structural columns corresponding to the shaft steel columns are cast between the ring beams of the two adjacent floors, and the ends of the shaft steel beams 2 close to the curtain wall are fixedly connected to the shaft steel columns, and the ends of the shaft steel beams 2 away from the curtain wall are fixedly connected to the structural columns; The ends of the shaft steel beam 1 and the shaft steel beam 2 below the ground close to the curtain wall are both fixed on the existing concrete wall.

2. The elevator shaft structure according to claim 1, characterized in that: A connecting steel plate 1 is pre-buried on one side of the structural column close to the steel beam, and a plurality of steel members extending out of the structural column are arranged on the connecting steel plate 1, and the steel members are provided with reinforcing steel plates by perforation plug welding; The shaft steel beam 1 and the shaft steel beam 2 are fixed on the connecting steel plate 1.

3. The elevator shaft structure according to claim 2, characterized in that: A connecting steel plate 2 is fixedly arranged on the existing concrete wall through a plurality of inverted cone-shaped chemical anchor bolts, and a shaft steel beam 1 and a shaft steel beam 2 below the ground are fixed on the connecting steel plate 2.

4. The elevator shaft structure according to claim 3, characterized in that: Fillet welds are used to connect the shaft steel beam 1 and the connecting steel plate 2, the shaft steel beam 2 and the connecting steel plate 2, the shaft steel beam 1 and the connecting steel plate 1, and the shaft steel beam 2 and the connecting steel plate 1.

5. The elevator shaft structure according to claim 3, characterized in that: There are 6 inverted cone-shaped chemical anchor bolts, and the design value of the shear bearing capacity of a single bolt is not less than 50KN, and the design value of the tensile bearing capacity of a single bolt is not less than 27KN.

6. The elevator shaft structure according to claim 3, characterized in that: Except for the structural columns on the lowest floor, the upper and lower ends of the structural columns on each other floor are connected to the floor ring beam through longitudinal steel bars, and the depth of the longitudinal steel bars extending into the floor ring beam is not less than 15 times the diameter of the longitudinal steel bars.

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