Reinforcing structure for changing masonry wall into beam column frame

Abstract

The utility model discloses a reinforcing structure for changing a masonry wall into a beam column frame. The reinforcing structure comprises a newly-added frame beam, a newly-added frame column, a back-to-top frame body and a keel system. The jacking frame bodies are erected on the two sides of a to-be-dismantled masonry wall and are arranged along the whole length of the to-be-dismantled masonry wall, and the tops of the jacking frame bodies abut against the bottom face of an existing floor through a keel system. The newly-added frame beam is constructed at a beam body dismantling part of a masonry wall to be dismantled and is connected with the bottom surface of an existing floor, the multiple newly-added frame columns are constructed at multiple column body dismantling parts of the masonry wall to be dismantled respectively, and the tops of the multiple newly-added frame columns are connected with the newly-added frame beam to form a beam column frame structure; the bottoms of the newly-added frame columns located on the bottom layer extend to the position below the bottom plate, and the newly-added frame columns located on all the layers on the same vertical line are connected into a whole. The utility model relates to the technical field of building construction, and can solve the problems in the prior art that the safety of a building structure is influenced by dismantling of a masonry wall and the dismantling and reconstruction cost of the masonry wall and a floor is high.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a reinforcement structure for converting a masonry wall into a beam-column frame. Background Art

[0002] With the progress of society and the improvement of people's living standards, many early masonry structures can no longer meet people's living and use needs, especially the span and depth of the masonry structure do not meet people's needs, or when the original masonry structure is renovated, the original layout needs to be adjusted. In order to meet people's demand for space, the load-bearing walls need to be demolished.

[0003] Since masonry walls are heavy structures, direct demolition can easily cause floor slabs to be overloaded and deformed, affecting the structural safety of the entire building and posing a huge safety hazard; and if the masonry walls and floor slabs are demolished and rebuilt as a whole, it will consume a lot of labor costs, capital costs, and time costs. Therefore, it is necessary to provide a reinforcement structure for converting masonry walls into beam-column frames, which can solve the problems in the prior art that the demolition of masonry walls affects the safety of the building structure and the high cost of demolishing and rebuilding masonry walls and floor slabs. Summary of the invention

[0004] The utility model aims to provide a reinforcement structure for converting a masonry wall into a beam-column frame, which can solve the problems in the prior art that the removal of masonry walls affects the safety of building structures and the cost of removing and rebuilding masonry walls and floor slabs is high.

[0005] The utility model is achieved in this way:

[0006] A reinforcement structure for converting a masonry wall into a beam-column frame comprises newly added frame beams, newly added frame columns, a return frame and a keel system; the return frame is erected on both sides of the masonry wall to be demolished and is arranged along the entire length of the masonry wall to be demolished, and the top of the return frame is supported on the bottom surface of the existing floor slab through the keel system; the newly added frame beams are constructed at the demolished beam body portion of the masonry wall to be demolished and connected to the bottom surface of the existing floor slab, a number of newly added frame columns are respectively constructed at the demolished column body portions of the masonry wall to be demolished, and the tops of a number of newly added frame columns are connected to the newly added frame beams to form a beam-column frame structure; the bottoms of the newly added frame columns on the bottom layer extend to below the bottom plate, and the newly added frame columns on each layer on the same vertical line are sequentially connected into a whole.

[0007] The keel system includes a main keel and a secondary keel; a plurality of main keels are respectively installed in the brackets at the top of the uprights of the return frame, and the main keels are arranged perpendicular to the masonry wall to be demolished; a plurality of secondary keels are respectively erected on the main keels and supported on the bottom surface of the existing floor slab, and the secondary keels are arranged parallel to the masonry wall to be demolished.

[0008] The bottom of the newly added frame column located at the bottom layer is constructed with an independent foundation, and the independent foundation is located below the bottom plate, so that the newly added frame column located at the bottom layer is constructed vertically on the bottom plate.

[0009] A through hole is formed at the top of the existing floor slab, so that the main reinforcement of the newly added frame column located at the lower layer of the existing floor slab can pass through the existing floor slab and the newly added frame beam at the bottom thereof through the through hole, and be connected to the newly added frame column constructed on the top of the existing floor slab and the newly added frame beam at the bottom of the existing floor slab to form a whole.

[0010] A concrete pouring opening is formed at the bottom of the existing floor slab, and the concrete pouring opening is located within the range of the newly added frame beam.

[0011] The beam-column frame structure and the masonry wall to be demolished are located in the same vertical plane, so that the beam-column frame structure replaces the masonry wall to be demolished.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model is provided with newly added frame beams and newly added frame columns. The newly added frame beams and newly added frame columns of each floor are connected to form a beam-column frame structure of an overall structure, which is used to replace the masonry walls to be demolished. The bearing capacity of the beam-column frame structure is equal to or even better than the bearing capacity of the masonry walls to be demolished. Therefore, only the masonry walls to be demolished can be demolished to realize the reinforcement construction of the masonry walls to be converted into beam-column frame structures, that is, the masonry walls are transformed without demolishing the existing floor slabs, which does not affect the safety of the building structure, reduces the waste of resources in the transformation process, and saves labor costs, capital costs, and time costs.

[0014] 2. The utility model is provided with a return frame and a keel system, which provide return support for the existing floor slabs on both sides of the masonry wall to be demolished, thereby avoiding deformation of the existing floor slabs during the demolition of the masonry wall to be demolished and ensuring the safety of the building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a plan view before the transformation of the reinforcement structure of the utility model of masonry wall to beam-column frame;

[0016] Figure 2 It is a plan view after the transformation of the reinforced structure of the utility model of masonry wall to beam-column frame;

[0017] Figure 3 yes Figure 2 Middle AA section;

[0018] Figure 4 yes Figure 2 Middle BB cross-section.

[0019] In the figure, 1 is the existing masonry wall, 2 is the masonry wall to be demolished, 4 is the existing floor slab, 5 is the newly added frame beam, 6 is the newly added frame column, 7 is the return top frame, 8 is the main keel, and 9 is the secondary keel. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Please see attached Figure 1 To Attachment Figure 4 A reinforcement structure for converting a masonry wall into a beam-column frame comprises a newly added frame beam 5, a newly added frame column 6, a return frame 7 and a keel system; the return frame 7 is erected on both sides of the masonry wall 2 to be demolished and is arranged along the entire length of the masonry wall 2 to be demolished, and the top of the return frame 7 is supported on the bottom surface of the existing floor 4 through the keel system; the newly added frame beam 5 is constructed at the beam removal position of the masonry wall 2 to be demolished and is connected to the bottom surface of the existing floor 4, and a number of newly added frame columns 6 are respectively constructed at a number of column removal positions of the masonry wall 2 to be demolished, and the tops of a number of newly added frame columns 6 are connected to the newly added frame beam 5 to form a beam-column frame structure; the bottom of the newly added frame column 6 located on the bottom layer extends to the bottom of the bottom plate, and the newly added frame columns 6 of each layer located on the same vertical line are sequentially connected into a whole.

[0022] Preferably, the return frame 7 can adopt a conventional disc-type scaffolding, and the return frame 7 is set up in the construction floor to provide return support for the existing floor slab 4. The erection process of the return frame 7 is not repeated here. Since the masonry wall 2 to be demolished is a load-bearing wall, the return frame 7 can prevent the existing floor slab 4 from deforming during the demolition of the masonry wall 2 to be demolished, thereby affecting the safety of the building structure. The keel system is used to cooperate with the return frame 7 to provide uniform return support force for the existing floor slab 4.

[0023] After partially demolishing the masonry wall 2 to be demolished, new frame beams 5 and new frame columns 6 are constructed. The beam-column frame structure formed by the new frame beams 5 and the new frame columns 6 provides bearing capacity to replace the masonry wall 2 to be demolished, so that the remaining part of the masonry wall 2 to be demolished can be demolished, thereby ensuring the safety of the building structure. There is no need to demolish and rebuild the existing masonry wall 1 and the existing floor slab 4, which greatly reduces the amount of work and saves labor costs, financial costs, and time costs.

[0024] Preferably, two additional frame columns 6 are provided, which are respectively located at the two ends of the masonry wall 2 to be demolished, and the additional frame beam 5 is located between the two additional frame columns 6. If the span of the masonry wall 2 to be demolished is large, additional frame columns 6 may be added accordingly. The construction parameters such as the size, reinforcement, and concrete grade of the additional frame columns 6 and the additional frame beams 5 are designed according to the bearing requirements of the beam-column frame structure, and are constructed using conventional processes such as formwork, steel bar binding, concrete pouring, maintenance, and formwork removal, which will not be repeated here.

[0025] Please see attached Figure 2 and attached Figure 4 The keel system includes a main keel 8 and a secondary keel 9; a plurality of main keels 8 are respectively installed in the brackets at the top of the uprights of the return frame 7, and the main keels 8 are arranged perpendicular to the masonry wall 2 to be demolished; a plurality of secondary keels 9 are respectively erected on the main keels 8 and supported on the bottom surface of the existing floor 4, and the secondary keels 9 are arranged parallel to the masonry wall 2 to be demolished.

[0026] Preferably, the main keel 8 and the secondary keel 9 can be made of square steel, and the horizontal and vertical distribution can ensure that reliable top support is provided to each area of ​​the existing floor slab 4, and the force is evenly and reliably applied. The number, arrangement spacing, material specifications, etc. of the main keel 8 and the secondary keel 9 can be adaptively selected according to the actual load-bearing requirements.

[0027] The bottom of the newly added frame column 6 located at the bottom layer is constructed with an independent foundation (not shown in the figure), and the independent foundation is located below the base plate, so that the newly added frame column 6 located at the bottom layer is constructed vertically on the base plate.

[0028] The newly added frame columns 6 on the bottom floor extend to the bottom of the base plate through an independent foundation, which can improve the bearing capacity of the newly added frame columns 6 and transfer the load to the bottom of the ground, ensuring that the entire beam-column frame structure can achieve the same or even better bearing capacity as the masonry wall.

[0029] The independent foundation is constructed using conventional column foundation construction technology. The size, concrete grade, etc. of the independent foundation can be adaptively designed according to the actual bearing requirements and will not be elaborated here.

[0030] A through hole (not shown in the figure) is formed at the top of the existing floor slab 4, so that the main reinforcement of the newly added frame column 6 located at the lower layer of the existing floor slab 4 can pass through the through hole through the existing floor slab 4 and the newly added frame beam 5 at the bottom thereof, and be connected to the newly added frame column 6 constructed on the top of the existing floor slab 4 and the newly added frame beam 5 at the bottom of the existing floor slab 4 to form a whole.

[0031] Through holes are formed by partially chiseling the existing floor slab 4. Due to the arrangement of the main reinforcement of the newly added frame columns 6, the main reinforcement of the newly added frame columns 6 of each layer penetrates the existing floor slab 4 and is connected as a whole, so that the newly added frame columns 6 of each layer are connected as a whole. At the same time, the newly added frame columns 6 also penetrate the newly added frame beams 5 located at the bottom of the existing floor slab 4, and the reinforcement of the newly added frame columns 6 is connected with the reinforcement of the newly added frame beams 5, so as to ensure the integrity of the entire beam-column frame structure, and further ensure that the bearing capacity of the beam-column frame structure can meet the design requirements, so as not to affect the safety of the building structure.

[0032] A concrete pouring port (not shown in the figure) is formed at the bottom of the existing floor slab 4, and the concrete pouring port is located within the range of the newly added frame beam 5. The number and position of the concrete pouring port can be adaptively adjusted according to the concrete pouring requirements of the newly added frame beam 5, so as to facilitate the pouring construction of the newly added frame beam 5.

[0033] The beam-column frame structure and the masonry wall 2 to be demolished are located in the same vertical plane, so that the beam-column frame structure replaces the masonry wall 2 to be demolished, and the masonry wall 2 to be demolished can be demolished to realize the reconstruction construction of the masonry wall into the beam-column frame structure.

[0034] Please see attached Figure 1 To Attachment Figure 4 Example 1: In a certain building structure, there is an existing masonry wall 1 which is 240 mm thick and has a strength grade of MU10. One load-bearing structural wall in the existing masonry wall 1 needs to be demolished, that is, the masonry wall 2 to be demolished, and the masonry wall 2 to be demolished is transformed into a beam-column frame structure.

[0035] The masonry wall 2 to be demolished is also a masonry wall with a thickness of 240 mm and a strength grade of MU10. The existing floor slab 4 is a reinforced concrete cast-in-place floor slab or a prefabricated floor slab.

[0036] First, a return frame 7 is set up under the existing floor 4 of the construction layer. The existing floor 4 is supported by the main keel 8 and the secondary keel 9 above the return frame 7 to prevent the upper floor, i.e., the existing floor 4, from deformation during the demolition of the masonry wall 2 to be demolished.

[0037] The two ends of the masonry wall 2 to be demolished are partially demolished to form a column demolition area, and the top of the masonry wall 2 to be demolished is partially demolished to form a beam demolition area, and sufficient construction space is left. Then, the newly added frame columns 6 and the newly added frame beams 5 are respectively constructed at the column demolition area and the beam demolition area of ​​the masonry wall 2 to be demolished.

[0038] When constructing the newly added frame columns 6 on the ground floor, it is necessary to excavate the foundation and add an independent foundation to improve the stability of the lower end of the newly added frame columns 6. At the same time, the existing floor slab 4 on the ground floor is partially chiseled to form a through hole so that the main reinforcement of the newly added frame columns 6 can extend to the second floor, thereby connecting the newly added frame columns 6 on the ground floor and the second floor, and increasing the integrity and bearing capacity of the beam-column frame structure. When constructing the newly added frame columns 6 on the second floor and above, the existing floor slab 4 is also partially chiseled so that the main reinforcement of the newly added frame columns 6 on each floor is connected from bottom to top.

[0039] The newly added frame beam 5 is constructed. To ensure the density of the concrete pouring of the newly added frame beam 5, the existing floor slab 4 on the top of the newly added frame beam 5 is chiseled to form a concrete pouring opening for the concrete pouring of the newly added frame beam 5. When the newly added frame beam 5 is constructed, the steel bars of the newly added frame beam 5 are connected to the newly added frame column 6, and the newly added frame beam 5 and the newly added frame column 6 can be poured simultaneously to ensure the integrity of the beam-column frame structure. The ratio of cement to sand in the mortar used for the newly added frame beam 5 and the newly added frame column 6 is 1:3.

[0040] After the beam-column frame structure is cast, even if the beam-column frame structure is maintained, after the strength of the beam-column frame structure reaches the requirement, the top frame 7 is removed to complete the reinforcement and transformation of the beam-column frame from masonry wall.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reinforcement structure for converting a masonry wall into a beam-column frame, characterized in that: The invention comprises a newly added frame beam (5), a newly added frame column (6), a top frame (7) and a keel system; the top frame (7) is erected on both sides of the masonry wall (2) to be demolished and is arranged along the entire length of the masonry wall (2) to be demolished, and the top of the top frame (7) is supported on the bottom surface of the existing floor slab (4) through the keel system; the newly added frame beam (5) is constructed at the beam removal position of the masonry wall (2) to be demolished and is connected to the bottom surface of the existing floor slab (4); a plurality of newly added frame columns (6) are respectively constructed at a plurality of column removal positions of the masonry wall (2) to be demolished, and the tops of a plurality of newly added frame columns (6) are connected to the newly added frame beam (5) to form a beam-column frame structure; the bottom of the newly added frame column (6) located at the bottom layer extends to the bottom of the bottom plate, and the newly added frame columns (6) of each layer located on the same vertical line are sequentially connected to form a whole.

2. The reinforcement structure of the masonry wall-to-beam-column frame according to claim 1 is characterized in that: The keel system comprises a main keel (8) and a secondary keel (9); a plurality of main keels (8) are respectively installed in brackets at the top of the uprights of the return frame (7), and the main keels (8) are arranged perpendicular to the masonry wall (2) to be demolished; a plurality of secondary keels (9) are respectively erected on the main keels (8) and supported on the bottom surface of the existing floor slab (4), and the secondary keels (9) are arranged parallel to the masonry wall (2) to be demolished.

3. The reinforcement structure of the masonry wall-to-beam-column frame according to claim 1 is characterized in that: The bottom of the newly added frame column (6) located at the bottom layer is constructed with an independent foundation, and the independent foundation is located below the bottom plate, so that the newly added frame column (6) located at the bottom layer is constructed vertically on the bottom plate.

4. The reinforcement structure of the masonry wall-to-beam-column frame according to claim 1 is characterized in that: A through hole is formed at the top of the existing floor slab (4), so that the main reinforcement of the newly added frame column (6) located at the lower layer of the existing floor slab (4) can pass through the through hole through the existing floor slab (4) and the newly added frame beam (5) at the bottom thereof, and be connected to the newly added frame column (6) constructed on the top of the existing floor slab (4) and the newly added frame beam (5) at the bottom of the existing floor slab (4) to form a whole.

5. The reinforcement structure of the masonry wall-to-beam-column frame according to claim 1 or 4 is characterized in that: A concrete pouring opening is formed at the bottom of the existing floor slab (4), and the concrete pouring opening is located within the range of the newly added frame beam (5).

6. The reinforcement structure of the masonry wall-to-beam-column frame according to claim 1 is characterized in that: The beam-column frame structure and the masonry wall (2) to be removed are located in the same vertical plane, so that the beam-column frame structure replaces the masonry wall (2) to be removed.

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