Supporting beam and column replacing construction structure by means of horizontal combined type supporting beam

Abstract

The utility model discloses a joist column replacement construction structure with the help of a horizontal combined type supporting beam, which is arranged between structural columns to be dismantled and located under the structural beams to be reinforced and reformed, and comprises the supporting beam, the two ends of the supporting beam are connected with the side walls of the structural columns through connecting assemblies, and the connecting assemblies are arranged on the supporting beam. The supporting beam is in an I-shaped steel shape, and a pressure bearing structure abutting against the bottom wall of the structural beam is further arranged on an upper wing plate, close to the end of the to-be-dismantled structural column, of the supporting beam, so that when supporting counter force is provided for the bottom of the structural beam (2) and the supporting effect of the structural column on the structural beam is counteracted, the pre-dismantling area is dismantled, and after the structural beam is reinforced, the pre-dismantling area is dismantled. And the rest part of the structural column is further dismantled. Based on the structure, the construction operation difficulty of high-clearance lower joist column replacement is well controlled, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of reinforcement and reconstruction construction, and particularly relates to a construction structure for column replacement under a beam by means of a horizontal combined support beam. Background Art

[0002] With the rapid development of society, early buildings are also aging. In addition, people's requirements for the experience of buildings are getting higher and higher, and the problems of old buildings are becoming increasingly prominent. Due to the cumbersome procedures for demolition and reconstruction, many old buildings are renovated by means of reinforcement and reconstruction. At present, in terms of the use space of many public buildings, it is required to be more spacious and open to improve the utilization rate and adaptability of the space inside the building. Therefore, it is necessary to demolish the structural columns of the building.

[0003] Axis network reconstruction is a relatively common reconstruction method in the reinforcement and reconstruction project. Among them, column replacement under a beam can achieve the purpose of demolishing the structural column, and the construction of column replacement under a beam is the most complex renovation content in terms of construction difficulty. Especially under the construction conditions of high clear height, the technical measures for column replacement under a beam renovation will increase sharply. Based on the above actual problems, it is necessary to innovatively adopt a construction structure with convenient construction and simple measures to control the operation difficulty of column replacement under a beam construction under high clear height, improve the construction efficiency and reduce the construction cost. Content of the Utility Model

[0004] The purpose of the utility model is to provide a construction structure for column replacement under a beam by means of a horizontal combined support beam under high clear height, which has convenient construction and simple measures, can better control the operation difficulty of column replacement under a beam construction under high clear height, and has high construction efficiency and greatly reduced construction cost.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a construction structure for column replacement under a beam by means of a horizontal combined support beam is symmetrically arranged on both sides of the structural column to be demolished and between adjacent structural columns respectively with the structural column to be demolished as the center, and is located directly below the structural beam to be reinforced and reconstructed. The horizontal combined support beam includes a support beam arranged parallel to the structural beam and below the structural beam. Both ends of the support beam are connected to column connection plates fixedly installed on the side walls of adjacent structural columns through connection components. The support beam is in the shape of an I-beam. On the upper wing plate of the end of the support beam close to the structural column to be demolished, a pressure-bearing structure abutted against the bottom wall of the structural beam is further arranged. The support beam supports the pressure-bearing structure and provides a supporting force to the bottom of the structural beam to replace the supporting effect of the structural column to be demolished on the structural beam.

[0006] Preferably, the column connecting plate is made of a steel plate with the same width as the structural column to be demolished or the adjacent structural column, and a plurality of through holes are opened. The column connecting plate surrounds the structural column to be demolished or the structural column for one week. Two column connecting plates symmetric with respect to the structural column to be demolished or the adjacent structural column are tightly connected by connecting screw rods passing through the through holes of the structural column to be demolished or the adjacent structural column and the column connecting plate. Structural adhesive is injected into the gap of the column grouting area between the column connecting plate and the structural column to be demolished or the adjacent structural column, and adjacent column connecting plates are welded to each other.

[0007] Preferably, the area of the structural column to be demolished or the adjacent structural column in contact with the column connecting plate is chiseled to remove the structural protective layer until the column reinforcement is exposed, and the connecting screw rod does not contact the column reinforcement.

[0008] Preferably, the through holes provided on the column connecting plate are arranged in two rows and three columns, a total of 6.

[0009] Preferably, the connecting component includes a connecting piece and a buried plate. The connecting piece is made of 40# I-beam. The I-shaped cross-section of the connecting piece is vertically welded on the surface of the column connecting plate. The support beam is made of 40# I-beam. The length of the support beam is less than the structural beam between the structural column to be demolished and the adjacent structural column. After the two ends of the support beam are respectively aligned and abutted against the connecting pieces welded on the side walls of the adjacent structural column and the structural column to be demolished, the buried plate covers the two side surfaces of the vertical rib plates where the support beam and the connecting piece are butted. On the vertical rib plate where the connecting piece abuts against the support beam, connecting holes are symmetrically opened. The buried plate is provided with connecting holes corresponding one by one to the connecting holes opened on the connecting piece and the support beam. After the bolts pass through the buried plate, the support beam, and the connecting holes after alignment of the connecting piece in sequence, the end of the bolt is tightened and reinforced by a nut.

[0010] Preferably, the pressure-bearing structure includes a bearing plate. One side of the bearing plate is vertically welded with a pressure-bearing steel pipe. The end of the pressure-bearing steel pipe facing away from the bearing plate is threadedly connected with a steel short column. The side of the bearing plate facing away from the pressure-bearing steel pipe contacts the structural beam, and the steel short column contacts the support beam.

[0011] Preferably, a framework assembled by steel bars is surrounded outside the structural beam. Vertical formwork and horizontal formwork are attached to the left and right sides and the lower part of the framework. Main keels are also attached to the side of the vertical formwork on the left and right sides of the framework facing away from the structural beam. The vertical side formwork on the left and right sides of the framework is fastened by tension bolts passing through the structural beam, the vertical formwork, and the main keel through the butterfly buttons at both ends. The horizontal formwork arranged at the bottom of the structural beam is supported by the secondary keels arranged on the upper wing plate of the support beam.

[0012] Further, a plastic sleeve is arranged outside the tension bolt and penetrates through the structural beam.

[0013] The beneficial effects of the present invention are:

[0014] 1. Under high clear heights, a support structure with a simple horizontal combined support beam is applied between the original structural columns, replacing the support force of the original structural columns; 2. Meanwhile, a platform is built with this support beam as the bottom formwork to reinforce the structural beam; 3. This construction structure avoids the influence of the support structure on subsequent renovation construction. Generally speaking, based on this construction structure, the operation difficulty of the construction of replacing columns under a high clear height can be better controlled, and the construction efficiency is high and the construction cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 is a schematic diagram of the overall structure of the combined support beam in the present utility model;

[0016] FIG. 2 is a schematic diagram of the installation of the column connection plate on the side wall of the structural column in the present utility model;

[0017] FIG. 3 is a schematic diagram of the reinforcement of the structural beam in the present utility model;

[0018] FIG. 4 is a schematic sectional view of the reinforcement of the structural beam in the present utility model;

[0019] Among them, 1, structural column; 2, structural beam; 3, column connection plate; 4, fastening nut; 5, embedded plate; 6, bolt; 7, connecting piece; 8, bearing plate; 9, short steel column; 10, pressure-bearing steel pipe; 11, column reinforcement; 12, connecting screw rod; 13, column grouting area; 14, secondary keel; 15, formwork; 16, reinforcement bar; 17, butterfly buckle; 18, main keel; 19, plastic sleeve; 20, tie rod; 21, beam grouting area; 22, support beam; 23, pre-demolition area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present utility model, and are not intended to limit the present utility model.

[0021] A construction structure for replacing columns by means of a combined support beam is centered on the structural column 1a to be demolished, symmetrically arranged on both sides of the structural column 1a to be demolished between adjacent structural columns 1b, and located directly below the structural beam 2 to be reinforced and renovated. The horizontal combined support beam includes a support beam 22 arranged parallel to the structural beam 2 and below the structural beam 2. The two ends of the support beam 22 are connected to the column connection plates 3 fixedly installed on the side walls of adjacent structural columns 1b through connection components. The support beam 22 is in the shape of an I-beam. On the upper flange of the end of the support beam 22 close to the structural column 1a to be demolished, a bearing structure abutting against the bottom wall of the structural beam 2 is further provided. The support beam 22 supports the bearing structure and provides a support force to the bottom of the structural beam 2 to replace the support effect of the structural column 1a to be demolished on the structural beam 2.

[0022] AsFigure 1 and Figure 2 As shown in Figure 2 , the column connection plate 3 is made of a steel plate with a thickness of 20 mm, the height of the steel plate is 800 mm, the width of the steel plate of the column connection plate 3 is the same as the widths of the structural column 1b and the structural column 1a to be demolished. A row of through holes with a diameter of 27 mm are opened at the upper and lower parts of the column connection plate 3, that is, a total of 6 through holes in two rows and three columns. The joints of the adjacent column connection plates 3 on each surface of the adjacent structural column 1b and the structural column 1a to be demolished are connected by welding. Before installing the column connection plate 3, use an electric pickaxe to chisel the structural protection layer on the outer surface in the area where the column connection plate 3 is to be installed on the adjacent structural column 1b and the structural column 1a to be demolished until the column reinforcement 11 inside is exposed. Avoiding the position of the column reinforcement 11, use an electric drill to drill a through screw hole with a diameter of 27 mm in this area of the adjacent structural column 1b and the structural column 1a to be demolished along the width direction of the adjacent structural column 1b and the structural column 1a to be demolished. Insert the connecting screw rod 12 with a diameter of 25 mm, then insert the column connection plate 3 on the connecting screw rod 12, and fasten the end of the connecting screw rod 12 extending outside the through hole of the column connection plate 3 with a double fastening nut 4. Finally, inject structural adhesive into the gap of the column grouting area 13 between the column connection plate 3 and the adjacent structural column 1b and the structural column 1a to be demolished.

[0023] The connection assembly includes a connector 7 and an embedded plate 5. The connector 7 is made of a 40# I-beam with a length of 40 cm. One row of 4 through holes with a diameter of 27 mm are opened at the front end of the vertical rib plate of the I-beam of the connector 7. The length direction of the connector 7 is perpendicular to the column connection plate 3, and its rear end welding part is perpendicularly welded at a suitable position on the surface of the column connection plate 3.

[0024] The embedded plate 5 is made of a steel plate with a thickness of 10 mm, a height of 350 mm, and a length of 300 mm. Corresponding to it, 2 rows of 4 through holes with a diameter of 27 mm are opened on the embedded plate 5.

[0025] The support beam 22 is made of a 40# I-beam with a suitable length. One row of 4 through holes with a diameter of 27 mm are opened on the vertical rib plates at both ends of the support beam 22. The end of the support beam 22 is butted with the end of the connector 7 where the through hole is opened. The embedded plate 5 is attached to the two side surfaces of the vertical rib plates where the support beam 22 and the connector 7 are butted well. And the four through holes of the support beam 22 and the four through holes of the connector 7 are aligned with the 8 through holes on the embedded plate 5. Insert the bolt 6 with a diameter of 25 mm through the through holes of the embedded plate 5, the support beam 22, and the connector 7 that are aligned in sequence, and then tighten and reinforce with nuts.

[0026] The pressure-bearing structure includes a bearing plate 8, which is made of a steel plate with a width of 200 mm, a length of 300 mm, and a thickness of 10 mm; a pressure-bearing steel pipe 10 is vertically welded to one side of the bearing plate 8, and a steel short column 9 is threadedly connected to the end of the pressure-bearing steel pipe 10 facing away from the bearing plate 8. The pressure-bearing steel pipe 10 is made of a steel pipe with an outer diameter of 30 mm and a wall thickness of 5 mm. There are 8 steel short columns 9 in 2 rows and 4 columns, with a diameter of 20 mm and a height of 50 mm. The existing thickness dimension of the structural beam 2, plus the length of the pressure-bearing steel pipe 10 and the thickness dimension of the bearing plate 8, the sum of the three dimensions is equal to the total thickness dimension of the structural beam 2 after reinforcement. The side of the bearing plate 8 facing away from the pressure-bearing steel pipe 10 is in contact with the bottom of the structural beam 2. The steel short column 9 is screwed out along the pressure-bearing steel pipe 10 until it contacts the support beam 22. The pressure-bearing structure is arranged on the upper wing plate of the support beam 22 near one end of the structural column 1a to be demolished. Structural adhesive is filled and pressed in the beam grouting area 21 between the bearing plate 8 and the structural beam 2; if the length of the pressure-bearing steel pipe 10 exceeds 30 cm, after the steel short column 9 is inserted into the pressure-bearing steel pipe 10, grouting material is filled in the internal cavity of the pressure-bearing steel pipe 10.

[0027] A horizontal support beam 22 is arranged between the adjacent structural column 1b and the structural column 1a to be demolished. By setting the above-mentioned pressure-bearing support structure composed of the bearing plate 8, the steel short column 9, and the pressure-bearing steel pipe 10 above the ends of both ends of the horizontal support beam 22 to provide a reaction force to the structural beam 2, when the support force of the original structural column 1a to be demolished can be replaced, the column pre-demolition area 23 can be demolished.

[0028] As Figure 3 and Figure 4 shown, control the horizontal height of the support beam 22, reinforce the bottom of the structural beam 2, roughen the surfaces of the side wall and the bottom wall of the structural beam 2, and then, along the width direction of the structural beam 2, open a through hole at the top of the structural beam 2. Insert a steel bar 16 into the through hole of the structural beam 2 and wind it around the side wall and the bottom wall of the structural beam 2 for one week to form a ring-shaped reinforced steel bar circle as Figure 4 shown. Along the length direction of the structural beam 2, arrange multiple horizontal steel bars 16 on the side walls and the bottom walls on both sides thereof, and tie and fix the joints between the steel bars 16 in the ring-shaped steel bar circle and the horizontal steel bars 16.

[0029] After the reinforcement bars 16 outside the structural beam 2 are tied up, fasten the sidewall formworks on both sides of the structural beam 2. Lay the secondary keels 14 on the upper wing plates of the supporting beams 22, lay the horizontal formwork 15 on the secondary keels 14, erect the vertical formwork 15 on the left and right sides of the horizontal formwork 15, and lay multiple main keels 18 horizontally on the outside of the vertical formwork 15. At the same time, use an electric drill to drill through holes with a diameter of 16 mm on both sides of the structural beam 2 in the width direction, pass through the structural beam 2, the vertical formwork 15, and the main keel 18, and then pass the tension rod 20 with a plastic sleeve 19 through the main keel 18, the secondary keel 14, the vertical formwork 15, and the structural beam 2 in sequence, and then fasten both ends of the tension rod 20 with butterfly buckles 17.

[0030] The installation process of a construction structure for replacing columns under a beam with the help of a horizontal combined support beam includes the following steps:

[0031] (1) Install the stressed connecting plates on the adjacent structural columns and the structural column to be demolished and reinforce them firmly. Subsequently, install a horizontally combined support beam structure composed of connecting pieces, embedded plates, and support beams between the adjacent structural columns.

[0032] (2) Utilize the supporting forces provided by the adjacent structural columns, the horizontal combined support beam, and the bearing support structure to the structural beam, replace the supporting force of the original structural column, and then demolish the column pre-demolition area at the connection part between the structural column and the structural beam.

[0033] (3) Roughcast the surfaces of the sidewalls and the bottom wall of the structural beam, then tie the longitudinal-section circular-ring reinforcement bars and the horizontally arranged reinforcement bars in the length direction, and open through holes penetrating the sidewalls of the structural beam in the width direction of the structural beam.

[0034] (5) Carry out the reinforcement settings for the sidewall formwork and the bottom wall formwork of the structural beam. Reinforce the sidewall formworks on both sides of the structural beam, insert the tension rods with plastic sleeves into the through holes arranged in the structural beam, so as to fasten the sidewall formworks; at the bottom of the structural beam, provide the supporting force through the horizontally arranged combined steel support beam to support the bottom wall formwork of the structural beam.

[0035] (6) Fill the formwork arranged outside the structural beam with grouting material. After waiting for the overall structure of the reinforced structural beam to reach a certain strength, first demolish the sidewall formworks on both sides of the reinforced structural beam and recycle the tension rods of the structural beam; after the reinforced structural beam meets the design requirements, demolish the bottom wall formwork at the bottom of the structural beam and the entire combined support beam structure, and finally completely demolish the remaining part of the structural column.

[0036] The purpose of the present utility model is to provide a construction structure for column replacement under a high clear height with convenient construction and simple measures, by means of a horizontal combined support beam. Based on this structure, the construction operation difficulty of column replacement under a high clear height can be better controlled, and the construction efficiency is high while the construction cost is greatly reduced. The implementation manner of the construction structure for column replacement under a high clear height by means of a horizontal combined support beam of the present utility model described above does not constitute a limitation on the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A construction structure for replacing columns with joists by means of a horizontally combined support beam, characterized in that Centered around the structural column to be demolished (1a), symmetrically arranged on both sides of the structural column to be demolished (1a) between the adjacent structural columns (1b), and located directly below the structural beam (2) to be strengthened and renovated. The horizontal combined support beam includes a support beam (22) arranged parallel to the structural beam (2) below the structural beam (2). Both ends of the support beam (22) are connected to the column connection plates (3) fixedly installed on the side walls of the adjacent structural columns (1b) through connection components. The support beam (22) is in the shape of an I-beam. On the upper wing plate at the end of the support beam (22) close to the structural column to be demolished (1a), there is also a pressure-bearing structure that abuts against the bottom wall of the structural beam (2). The support beam (22) supports the pressure-bearing structure and provides a support force to the bottom of the structural beam (2) to replace the support function of the structural column to be demolished (1a) for the structural beam (2).

2. The construction structure for column replacement of a joist with the aid of a horizontally combined support beam according to claim 1, characterized in that, The column connection plate (3) is made of a steel plate with the same width as the structural column to be demolished (1a) or the adjacent structural column (1b), and a plurality of through holes are opened. The column connection plate (3) surrounds the structural column to be demolished (1a) or the adjacent structural column (1b) for one week. Two column connection plates (3) symmetric with respect to the structural column to be demolished (1a) or the adjacent structural column (1b) are tightly connected by connection screw rods (12) passing through the through holes of the structural column to be demolished (1a) or the adjacent structural column (1b) and the column connection plate (3). Structural adhesive is injected into the gap of the column grouting area (13) between the column connection plate (3) and the structural column to be demolished (1a) or the adjacent structural column (1b), and adjacent column connection plates (3) are welded to each other.

3. The construction structure for column replacement of a joist with the aid of a horizontally combined support beam according to claim 2, characterized in that In the area where the structural column to be demolished (1a) or the adjacent structural column (1b) contacts the column connection plate (3), the structural protection layer is chiseled to expose the column reinforcement (11), and the connection screw rod (12) does not contact the column reinforcement (11).

4. The construction structure for column replacement of a joist with the aid of a horizontally combined support beam according to claim 2, characterized in that, The through holes opened on the column connection plate (3) are arranged in two rows and three columns, a total of 6.

5. The construction structure for column replacement of a joist with the aid of a horizontally combined support beam according to claim 1, characterized in that, The connection component includes a connecting piece (7) and a buried plate (5). The connecting piece (7) is made of 40# I-beam. The I-shaped cross-section of the connecting piece (7) is vertically welded on the surface of the column connection plate (3). The support beam (22) is made of 40# I-beam. The length of the support beam (22) is less than the structural beam (2) between the structural column to be demolished (1a) and the adjacent structural column (1b). After the two ends of the support beam (22) are respectively aligned and abutted against the connecting pieces (7) welded on the side walls of the adjacent structural column (1b) and the structural column to be demolished (1a), the buried plate (5) covers the two side surfaces of the vertical rib plates where the support beam (22) and the connecting piece (7) are butted. On the vertical rib plate where the connecting piece (7) abuts against the support beam (22), connecting holes are symmetrically opened. The buried plate (5) is provided with connecting holes corresponding one by one to the connecting holes opened on the connecting piece (7) and the support beam (22). After the bolt (6) passes through the buried plate (5) and the connecting holes of the support beam (22) and the connecting piece (7) after alignment in sequence, the end of the bolt (6) is tightened and reinforced by a nut.

6. The construction structure for column replacement of a joist by means of a horizontally combined support beam according to claim 1, characterized in that The pressure-bearing structure includes a bearing plate (8). A pressure-bearing steel pipe (10) is vertically welded to one side of the bearing plate (8). A steel short column (9) is threadedly connected to the end of the pressure-bearing steel pipe (10) facing away from the bearing plate (8). The side of the bearing plate (8) facing away from the pressure-bearing steel pipe (10) is in contact with the structural beam (2), and the steel short column (9) is in contact with the support beam (22).

7. A construction structure for replacing columns of a joist with the aid of a horizontal combined support beam according to claim 1, characterized in that, A framework assembled by steel bars (16) is wound around the structural beam (2). Vertical formworks (15) and horizontal formworks (15) are attached to the left and right sides and the lower part of the framework. Main keels (18) are also attached to the sides of the vertical formworks (15) on the left and right sides of the framework facing away from the structural beam (2). The vertical side formworks on the left and right sides of the framework are fastened by tension rods (20) passing through the structural beam (2), the vertical formworks (15), and the main keels (18) with butterfly clips (17) at both ends. The formwork (15) horizontally arranged at the bottom of the structural beam (2) is supported by secondary keels (14) arranged on the upper wing plates of the support beam (22).

8. A construction structure for column replacement of a joist with the aid of a horizontal combined support beam according to claim 7, characterized in that, A plastic sleeve (19) passing through the structural beam (2) is provided outside the tension rod (20).

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