Structure for replacing prefabricated floor slab of existing masonry house with cast-in-place floor slab

Abstract

The utility model relates to the technical field of floor transformation, in particular to a structure for replacing prefabricated floors of an existing masonry house with cast-in-place floors, which comprises cast-in-place reinforced concrete floors, each room corresponds to one cast-in-place reinforced concrete floor, and inner wall connecting diagonal bracing type steel beams are pre-buried in the cast-in-place reinforced concrete floors. The inner wall connecting diagonal bracing type steel beams penetrate through the original masonry bearing inner walls to connect the cast-in-place reinforced concrete floor slabs of every two adjacent rooms in series. An outer wall connecting section steel beam is pre-buried in the cast-in-place reinforced concrete floor of the outermost room, one end of the outer wall connecting section steel beam is fixed in the original masonry bearing outer wall, and the other end of the outer wall connecting section steel beam penetrates through the adjacent original masonry bearing inner wall to connect the cast-in-place reinforced concrete floors of the two adjacent rooms in series. The outer wall connecting section steel beams and the inner wall connecting diagonal bracing section steel beams are alternately arranged at intervals. According to the structure of the cast-in-place floor slab, the original masonry load-bearing wall does not need to be removed and then poured, and the original masonry load-bearing wall is reserved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of floor reconstruction, in particular to a structure of existing masonry house prefabricated floor replacement cast-in-place floor. BACKGROUND

[0002] With the development of social economy, the state encourages the protection and renewal utilization of existing buildings in urban and rural areas from the policy, to avoid the disappearance of the original memory of the city caused by large-scale demolition and construction. The brick masonry structure houses built in different years, which inherit the Chinese Qin brick Han tile tradition, need to be preserved. Due to the technical conditions at the time of construction, the floor panels of these brick wall houses are mostly prefabricated concrete panels or wooden purlin floors, which have poor integrity and cannot meet the functional requirements of the reconstruction and utilization. Therefore, it is necessary to carry out functional reconstruction of the interior of the house without changing the original architectural style, and the important content is structure reinforcement and seismic reinforcement.

[0003] Prefabricated concrete channel-shaped panels and hollow core panels are common prefabricated components of floor panels of existing brick wall houses. The channel-shaped panel has a downward open groove structure, with ribbed beams on both sides and a thin plate in the middle. The hollow core panel usually has a hollow circular hole in the panel. The prefabricated floor panel of the original masonry structure has low bearing capacity and poor integrity, and needs to be replaced by cast-in-place panels in the reconstruction. The technical difficulty is that the original prefabricated panel is placed in the brick wall, and the removal of the prefabricated panel will cause the wall to lose lateral support and be unstable, and the newly added cast-in-place panel cannot be simply embedded in the original wall. Based on the above reasons, a reliable technology is needed to realize the safe removal of the prefabricated floor panel of the masonry structure and replace it with a cast-in-place floor panel in engineering practice. UTILITY MODEL CONTENTS

[0004] The utility model aims at the problems existing in the prior art, and provides a structure of existing masonry house prefabricated floor replacement cast-in-place floor, which replaces the original prefabricated panel of the existing building with a cast-in-place reinforced concrete floor panel after the removal of the original prefabricated panel, and the cast-in-place reinforced concrete floor panel replaces the original prefabricated panel, without the need to remove the original masonry bearing wall and then pour concrete, thus preserving the original masonry bearing wall.

[0005] The utility model is implemented by the following technical solutions:

[0006] The structure of precast floor replacement for cast-in-place floor in existing masonry building comprises cast-in-place reinforced concrete floor, each room corresponds to a cast-in-place reinforced concrete floor, the cast-in-place reinforced concrete floor is pre-buried with inner wall connecting counter-braced steel beam connected with original masonry load-bearing inner wall, at least one inner wall connecting counter-braced steel beam is laid at the position of each original precast floor, the inner wall connecting counter-braced steel beam penetrates the original masonry load-bearing inner wall to connect the cast-in-place reinforced concrete floors of every two adjacent rooms in series, the cast-in-place reinforced concrete floor of the outermost room is pre-buried with outer wall connecting steel beam, one end of the outer wall connecting steel beam is fixed in the original masonry load-bearing outer wall, the other end of the outer wall connecting steel beam penetrates the adjacent original masonry load-bearing inner wall to connect the cast-in-place reinforced concrete floors of two adjacent rooms in series, at least one outer wall connecting steel beam is laid at the position of each original precast floor, and the outer wall connecting steel beam and the inner wall connecting counter-braced steel beam are arranged alternately in intervals.

[0007] Further preferably, the bottom of the cast-in-place reinforced concrete floor is supported by a reinforced concrete reinforcement layer, the inner side of the original masonry load-bearing outer wall and the two sides of the original masonry load-bearing inner wall are respectively closely provided with a reinforced concrete reinforcement layer, and the top of the cast-in-place reinforced concrete floor is connected with the reinforced concrete reinforcement layer. The cast-in-place reinforced concrete floor is used in combination with the composite wall reinforced by the reinforced concrete reinforcement layer to realize the reinforcement of the component bearing capacity and the seismic performance of the masonry wall structure.

[0008] Further preferably, the original masonry load-bearing inner wall is provided with an inner wall steel beam mounting guide hole, the outer wall connecting steel beam and the inner wall connecting counter-braced steel beam are arranged through the corresponding inner wall steel beam mounting guide hole and the C30 fine stone concrete is poured to densely fill the holes.

[0009] Further preferably, the original masonry load-bearing outer wall is provided with an outer wall steel beam mounting guide hole, one end of the outer wall connecting steel beam is inserted into the outer wall steel beam mounting guide hole, and the C30 fine stone concrete is poured to densely fill the holes.

[0010] Further preferably, the end of the outer wall connecting steel beam inserted into the outer wall steel beam mounting guide hole is connected with an anchoring piece, the anchoring piece comprises an anchor plate and an anchor bar, the anchor plate is attached to the outer side of the original masonry load-bearing outer wall, one end of the anchor bar is fixedly connected with the anchor plate, and before the C30 fine stone concrete is poured to densely fill the holes, the other end of the anchor bar is arranged through the original masonry load-bearing outer wall and is fixedly welded with the outer wall connecting steel beam.

[0011] While the original prefabricated slab is removed in blocks, the inner wall steel beam installation guide hole is drilled on the original masonry load-bearing inner wall within the height range of the original prefabricated slab, the outer wall steel beam installation guide hole is drilled on the original masonry load-bearing outer wall, and the outer wall connecting steel beam and the inner wall connecting bracing steel beam are correspondingly arranged in the inner wall steel beam installation guide hole and the outer wall steel beam installation guide hole, so as to connect the adjacent walls, and the C30 fine stone concrete is poured and compacted in the guide hole after the steel beam is installed. The above steps are repeated for the removal of each prefabricated slab. In general, the replacement steps are as follows: the original prefabricated floor slab is removed, the wall-penetrating steel is replaced in the intermediate state, and the completed state of the cast-in-place reinforced concrete floor slab is replaced, and each room is replaced by a cast-in-place reinforced concrete floor slab. The prefabricated slab is removed in blocks, and the wall-penetrating bracing steel beam is replaced synchronously; the replacement steel beam is arranged alternately in the adjacent rooms of the inner wall; the replacement connecting steel beam is left in the cast-in-place slab, and the cast-in-place reinforced concrete floor slab of the adjacent rooms is connected in series; the outer wall connecting channel steel is connected with the replacement steel beam wall-penetrating hole of the floor slab, so as to reliably pull the outer wall and the cast-in-place reinforced concrete floor slab after replacement; the replacement sequence is from bottom to top, and each layer is completed.

[0012] The structure of the existing masonry building prefabricated slab replaced by cast-in-place slab is that the original prefabricated slab of the existing building is replaced by cast-in-place reinforced concrete floor slab after the original prefabricated slab is removed, and the cast-in-place reinforced concrete floor slab replaces the original prefabricated slab. During construction, the inner wall connecting bracing steel beam of the original masonry load-bearing inner wall interpenetrating wall replaces the lateral force transmission of the original prefabricated slab, so as to ensure the stability of the wall. The outer wall connecting steel beam and the inner wall connecting bracing steel beam are pre-buried in the newly replaced cast-in-place reinforced concrete floor slab, which serves as a shear member for transmitting the gravity load of the floor slab to the wall, greatly increasing the integrity and seismic performance of the floor slab; a reinforced concrete reinforcement layer is arranged closely on the original wall, the cast-in-place reinforced concrete floor slab is connected to the top of the reinforced concrete reinforcement layer, and the cast-in-place reinforced concrete floor slab is used in combination with the composite wall reinforced by the reinforced concrete reinforcement layer, so as to realize the reinforcement of the component bearing capacity and the seismic performance of the masonry wall structure, realize the pouring without removing the original masonry load-bearing wall, and retain the original masonry load-bearing wall. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a cross-sectional view of the structure of the existing masonry building prefabricated slab replaced by cast-in-place slab;

[0014] Figure 2 is a top view structural schematic diagram of Figure 1

[0015] Figure 3 is a top view schematic diagram of the position relationship between the steel beam and the original prefabricated slab;

[0016] The component names corresponding to the serial numbers in the figure are as follows:

[0017] ​1. Original masonry load-bearing exterior wall; 2. Guide holes for installing steel beams in the exterior wall; 3. Connecting steel beams in the exterior wall; 4. Existing precast slab; 5. Original masonry load-bearing interior wall; 6. Connecting bracing steel beams in the interior wall; 7. Guide holes for installing steel beams in the interior wall; 8. Cast-in-place reinforced concrete floor slab; 9. Reinforcing mesh concrete reinforcement layer; 10. Anchor plate; 11. Anchor bar. Detailed Implementation

[0018] The technical solutions of the utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. The described embodiments are only a part of the utility model, and not all of the embodiments.

[0019] Example 1

[0020] like Figures 1-3 As shown, a structure for replacing precast floor slabs in existing masonry buildings with cast-in-place floor slabs includes cast-in-place reinforced concrete floor slabs 8, with one cast-in-place reinforced concrete floor slab 8 corresponding to each room. The cast-in-place reinforced concrete floor slab 8 contains embedded internal wall connecting bracing steel beams 6 that connect to the original masonry load-bearing interior walls 5. At least one internal wall connecting bracing steel beam 6 is laid at the location of each original precast slab 4. The internal wall connecting bracing steel beam 6 penetrates the original masonry load-bearing interior walls 5, connecting the cast-in-place reinforced concrete floor slabs of each pair of adjacent rooms. The reinforced concrete floor slabs 8 are connected in series; the cast-in-place reinforced concrete floor slab 8 of the outermost room is pre-embedded with an external wall connecting steel beam 3. One end of the external wall connecting steel beam 3 is fixed in the original masonry load-bearing external wall 1, and the other end of the external wall connecting steel beam 3 passes through the adjacent original masonry load-bearing internal wall 5 to connect the cast-in-place reinforced concrete floor slabs 8 of the two adjacent rooms in series. At least one external wall connecting steel beam 3 is laid at the position of each original precast slab 4. The external wall connecting steel beam 3 and the internal wall connecting bracing steel beam 6 are arranged alternately at intervals.

[0021] After removing the original precast slab 4, the stability of the masonry wall is ensured by connecting steel beams 3 to the exterior walls and connecting steel beams 6 to the interior walls, thus reliably connecting the original load-bearing exterior masonry wall 1 and the original load-bearing interior masonry wall 5 to the replaced cast-in-place reinforced concrete floor slab 8. The replacement sequence of the cast-in-place reinforced concrete floor slab 8 is from bottom to top, completed layer by layer. The cast-in-place reinforced concrete floor slabs 8 of adjacent rooms are connected to form a whole by connecting steel beams 6 to the interior walls. The connecting steel beams 3 to the exterior walls and connecting steel beams 6 to the interior walls are pre-embedded in the newly replaced cast-in-place reinforced concrete floor slab 8 as shear-resistant components that transfer the gravity load of the floor slab to the walls, greatly increasing the integrity and seismic performance of the floor slab.

[0022] The bottom of the cast-in-place reinforced concrete floor 8 is supported by a reinforced concrete reinforcing layer 9, the inner side of the original masonry load-bearing outer wall 1 and the two sides of the original masonry load-bearing inner wall 5 are respectively closely provided with the reinforced concrete reinforcing layer 9, and the cast-in-place reinforced concrete floor 8 is connected with the top of the reinforced concrete reinforcing layer 9. The cast-in-place reinforced concrete floor 8 is used in combination with the composite wall reinforced by the reinforced concrete reinforcing layer 9, so that the component load-bearing capacity and the seismic performance of the masonry wall structure are reinforced.

[0023] The original masonry load-bearing inner wall 5 is provided with inner wall steel beam mounting guide holes 7, the outer wall connecting type steel beam 3 and the inner wall connecting counter-bracing type steel beam 6 are respectively arranged through the corresponding inner wall steel beam mounting guide holes 7, and C30 fine stone concrete dense holes are poured. The inner wall connecting counter-bracing type steel beam 6 of the interpenetrating wall of the original masonry load-bearing inner wall 5 replaces the lateral force transmission of the original prefabricated plate 4, and ensures the stability of the wall.

[0024] The original masonry load-bearing outer wall 1 is provided with outer wall steel beam mounting guide holes 2, one end of the outer wall connecting type steel beam 3 is inserted into the outer wall steel beam mounting guide hole 2, and C30 fine stone concrete dense holes are poured.

[0025] One end of the outer wall connecting type steel beam 3 inserted into the outer wall steel beam mounting guide hole 2 is connected with an anchoring piece, the anchoring piece includes an anchor plate 10 and an anchor bar 11, the anchor plate 10 is attached to the outer side of the original masonry load-bearing outer wall 1, one end of the anchor bar 11 is fixedly connected with the anchor plate 10, and the other end of the anchor bar 11 is arranged through the original masonry load-bearing outer wall 1 and is fixedly connected with the outer wall connecting type steel beam 3 before pouring the C30 fine stone concrete dense holes.

[0026] While the original prefabricated plate 4 is removed in blocks, the inner wall steel beam mounting guide holes 7 are drilled on the original masonry load-bearing inner wall 5 in the height range of the original prefabricated plate 4, the outer wall steel beam mounting guide holes 2 are drilled on the original masonry load-bearing outer wall 1, and the outer wall connecting type steel beam 3 and the inner wall connecting counter-bracing type steel beam 6 are arranged in the inner wall steel beam mounting guide holes 7 and the outer wall steel beam mounting guide holes 2, respectively, the adjacent walls are connected, and the C30 fine stone concrete dense guide holes are poured after the steel beams are mounted. The above steps are repeated for the removal of each prefabricated plate.

[0027] The above description is not a limitation of the present application, and the present application is not limited to the above examples. Within the scope of the present application, changes, modifications, additions or replacements made by ordinary skilled in the art should be within the protection scope of the present application.

Claims

1. A structure of precast floor replacement for cast-in-situ floor in existing masonry building, comprising cast-in-situ reinforced concrete floor (8), each room corresponds to a piece of cast-in-situ reinforced concrete floor (8), characterized in that: The cast-in-place reinforced concrete floor (8) is embedded with the inner wall connecting counter-braced steel beam (6) connected with the original masonry load-bearing inner wall (5), at least one inner wall connecting counter-braced steel beam (6) is laid at the position of each original prefabricated slab (4), the inner wall connecting counter-braced steel beam (6) penetrates the original masonry load-bearing inner wall (5) to connect the cast-in-place reinforced concrete floors (8) of every two adjacent rooms in series; the cast-in-place reinforced concrete floor (8) of the outermost room is embedded with the outer wall connecting steel beam (3), one end of the outer wall connecting steel beam (3) is fixed in the original masonry load-bearing outer wall (1), the other end of the outer wall connecting steel beam (3) penetrates the adjacent original masonry load-bearing inner wall (5) to connect the cast-in-place reinforced concrete floors (8) of two adjacent rooms in series, at least one outer wall connecting steel beam (3) is laid at the position of each original prefabricated slab (4); the outer wall connecting steel beam (3) and the inner wall connecting counter-braced steel beam (6) are arranged alternately in intervals.

2. The structure of replacement of the prefabricated floor slab of the existing masonry house with cast-in-place floor slab according to claim 1, characterized in that: The bottom of the cast-in-place reinforced concrete floor (8) is supported by the reinforced concrete reinforcement layer (9), the inner side of the original masonry load-bearing outer wall (1) and the two sides of the original masonry load-bearing inner wall (5) are respectively closely provided with the reinforced concrete reinforcement layer (9), and the top of the cast-in-place reinforced concrete floor (8) is connected with the reinforced concrete reinforcement layer (9).

3. The structure of replacement of the prefabricated floor slab of the existing masonry house with cast-in-place floor slab according to claim 1, characterized in that: The original masonry load-bearing inner wall (5) is provided with the inner wall steel beam installation guide hole (7), the outer wall connecting steel beam (3) and the inner wall connecting counter-braced steel beam (6) are provided through the corresponding inner wall steel beam installation guide hole (7) and the C30 fine stone concrete is poured to densely fill the holes.

4. The structure of replacement of the prefabricated floor slab of the existing masonry house with cast-in-place floor slab according to claim 1, characterized in that: The original masonry load-bearing outer wall (1) is provided with the outer wall steel beam installation guide hole (2), one end of the outer wall connecting steel beam (3) is inserted into the outer wall steel beam installation guide hole (2), and the C30 fine stone concrete is poured to densely fill the holes.

5. The structure of the replacement of the prefabricated floor slab of the existing masonry house with the cast-in-place floor slab according to claim 4, characterized in that: The outer wall connecting steel beam (3) inserted into the outer wall steel beam installation guide hole (2) is connected with the anchoring piece, the anchoring piece comprises an anchor plate (10) and an anchor bar (11), the anchor plate (10) is attached to the outer side of the original masonry load-bearing outer wall (1), one end of the anchor bar (11) is fixedly connected with the anchor plate (10), before pouring the C30 fine stone concrete to densely fill the holes, the other end of the anchor bar (11) is penetrated through the original masonry load-bearing outer wall (1) and is fixedly welded with the outer wall connecting steel beam (3).

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