A new construction column at a beam-column dense reinforcement joint and a construction method thereof

Abstract

The present application relates to the technical field of building construction, and particularly refers to a new structure column at a beam-column dense reinforcement joint and a construction method thereof.The technical scheme is as follows: a plurality of column foot reinforcements, a plurality of column foot reinforcements are partially implanted into an existing support beam according to the design position of a column foot; a plurality of column main reinforcements, a plurality of column main reinforcements are vertically arranged according to the design position of a column body and are fixedly connected with corresponding column foot reinforcements, the diameter of the column main reinforcement is greater than the diameter of the column foot reinforcement; a column foot and a column body formed by integral pouring, the width of the column foot formed by pouring is greater than the width of the column body.The beneficial effects are as follows: the present application forms a new structure column by setting a column foot and a column body, utilizes the size of the column foot being greater than the size of the column body, can realize increasing the area of the steel reinforcement implanted into the existing support beam, and then under the premise of meeting the firm strength of the new structure column, can reduce the diameter and the implantation depth of the column foot reinforcement, and in combination with the design of the steel reinforcement in the column foot, can improve the stability of the column foot, and then improves the firm strength and the stability of the column body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a new structural column at a beam-column dense reinforcement joint and a construction method thereof. BACKGROUND

[0002] Conventionally, a new structural column is built at the beam-column joint position of the original structure, and vertical main reinforcement of the new structural column needs to be planted at the beam-column joint part, and the planting depth needs to meet the basic anchoring depth requirement of the vertical tensile reinforcement specified in the specification. However, the reinforcement at the beam-column joint part of the original structure is dense, and the space is small, and the diameter of the vertical main reinforcement of the new structural column is large, so the planting of the joint part often encounters the difficulty that the planting cannot be performed or the planting depth does not meet the requirement.

[0003] The conventional solution to the problem of difficulty in planting the reinforcement at the beam-column dense reinforcement joint of the original structure is to unload the load at the top of the affected slab span, support the full frame at the bottom of the beam slab, then remove the concrete at the beam-column joint of the original structure to at least the beam bottom part, expose the main reinforcement of the beam and column at the joint part of the original structure, then find a space to construct the vertical reinforcement of the new structural column, and finally pour concrete to restore. The construction method of the conventional solution is complicated, and the cost is high. At the same time, it also has a great impact on the surrounding environment. In order to ensure that the load at the top of the affected slab span is completely unloaded, no load can be added to the top and the bottom needs to be supported back, so the space at the top and the bottom cannot be normally used during construction.

[0004] Therefore, the present application provides a new structural column at a beam-column dense reinforcement joint and a construction method thereof. SUMMARY

[0005] The present application aims to overcome the defects of the prior art, and provides a new structural column at a beam-column dense reinforcement joint and a construction method thereof, which solves the problem that the original structural column needs to be removed when a new structural column is built on the original structural column.

[0006] The present application provides a new structural column at a beam-column dense reinforcement joint, and the technical scheme is as follows: the new structural column comprises: a plurality of column foot reinforcements, the plurality of column foot reinforcements are partially implanted in the existing support beam according to the design position of the column foot; a plurality of column main reinforcements, the plurality of column main reinforcements are vertically arranged according to the design position of the column body and are fixedly connected with the corresponding column foot reinforcements, and the diameter of the column main reinforcement is greater than the diameter of the column foot reinforcement; a column foot and a column body formed by integral pouring, and the width of the column foot formed by pouring is greater than the width of the column body.

[0007] Further, the bottom of the column foot reinforcement is implanted into the upper part of the existing support beam.

[0008] Further, the column foot reinforcement includes a plurality of first foot reinforcements arranged at intervals along the edge of the column foot design position, the first foot reinforcement including a vertical segment and a horizontal segment connected perpendicularly to the vertical segment, the end of the vertical segment being embedded in the existing support beam, the end of the horizontal segment being arranged to extend towards the column body, and the end of the horizontal segment being located within the design range of the column body.

[0009] Further, the column foot reinforcement further includes a plurality of first open stirrups arranged at intervals, the first open stirrup being arranged on the plurality of first foot reinforcements on the same side in a downward opening manner, the top of the first open stirrup being fixedly connected to the horizontal segment of the corresponding first foot reinforcement, and the end of the first open stirrup being embedded in the existing support beam, and the depth of the first open stirrup embedded in the existing support beam being less than the depth of the vertical segment embedded in the existing support beam.

[0010] Further, the column foot reinforcement further includes a plurality of second foot reinforcements and a plurality of second open stirrups arranged at intervals, the two ends of the second foot reinforcement forming a first horizontal segment between the horizontal segment of the first foot reinforcement and the existing support beam, an inclined segment connecting the first horizontal segment, and a second horizontal segment connected to the two inclined segments, the second open stirrup being arranged on the inclined segment and the second horizontal segment of the plurality of second foot reinforcements in a downward opening manner, the top of the second open stirrup being fixedly connected to the corresponding inclined segment and the second horizontal segment, and the end of the second open stirrup being embedded in the existing support beam.

[0011] Further, the column foot reinforcement further includes a plurality of straight horizontal reinforcements arranged close to the top surface of the existing support beam, and the straight horizontal reinforcement being fixedly connected to the vertical segment of the corresponding first foot reinforcement.

[0012] The application also provides a construction method of a new structure column at a beam-column dense reinforcement joint, including the following steps: drilling holes in the existing support beam, embedding a plurality of column foot reinforcements in the drilled holes of the existing support beam according to the column foot design position, vertically connecting a plurality of column main reinforcements to the column foot reinforcement according to the column body design position, providing a formwork, installing the formwork to the pouring position, and integrally pouring the column foot and the column body.

[0013] Further, the implanting process of the column foot bar is as follows: a plurality of first foot bars are provided, end portions of vertical bar sections of the first foot bars are implanted into the existing support beam at the edge of the column foot design position, and the end portions of the horizontal bar sections of the first foot bars extend towards the direction of the column body; a plurality of first opening stirrups are provided, the first opening stirrups are buckled downwards on the horizontal bar sections of the first foot bars, two end portions of the first opening stirrups are implanted into the existing support beam, and the first opening stirrups are fixedly connected with the horizontal bar sections of the first foot bars; second foot bars are provided, first horizontal sections at two ends of the second foot bars are fixedly connected with corresponding first opening stirrups; second opening stirrups are provided, the second opening stirrups are buckled downwards on the second foot bars, two end portions of the second opening stirrups are implanted into the existing support beam, and top portions of the second opening stirrups are fixedly connected with corresponding inclined sections and second horizontal sections of the second foot bars; and a plurality of straight bars are provided, the straight bars are fixedly connected with corresponding vertical bar sections of the first foot bars.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] The main bars of the newly-built structure column are directly implanted into the existing structure at the existing beam-column dense reinforcement joint, and only the stirrups with small diameters in the column foot are implanted into the existing structure, so that the technical difficulties that the existing structure cannot be implanted with large-diameter reinforcement or the implanting depth does not meet the requirements are solved, and the implanting quality is guaranteed.

[0016] The method of damaging the existing structure by chiseling is avoided, the construction cost is greatly reduced, the construction period is accelerated, and the influence on the surrounding environment is reduced.

[0017] The present application forms a newly-built structure column by setting a column foot and a column body, and the size of the column foot is larger than that of the column body, so that the area of the reinforcement implanted into the existing support beam can be increased, and then the diameter and the implanting depth of the column foot reinforcement can be reduced on the premise of meeting the firm strength of the newly-built structure column, and the stability of the column foot can be improved by cooperating with the design of the reinforcement in the column foot, so that the firm strength and the stability of the column body are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a top view of the newly-built structure column at the beam-column dense reinforcement joint.

[0019] Figure 2 It is a side view of the newly-built structure column at the beam-column dense reinforcement joint.

[0020] Figure legend: 1, existing support beam; 2, column foot; 3, column body; 4, existing structure column; 5, first open stirrup; 6, column foot bar; 7, column main bar; 8, straight bar; 9, second open stirrup. DETAILED DESCRIPTION

[0021] The application will be further described below in conjunction with the drawings and specific embodiments.

[0022] Referring to Figure 1 , the application provides a new structure column at a beam-column dense reinforcement joint and a construction method thereof, which solves the problem that the existing structure column needs to be removed when a new structure column is built on the original structure column. The method cancels the direct implantation of the main reinforcement of the new structure column into the existing structure at the beam-column dense reinforcement joint of the existing structure. By setting a column foot on the existing structure, only the stirrup with a small diameter in the column foot is implanted into the existing structure, which solves the technical difficulty that the dense reinforcement of the existing structure cannot be implanted with large-diameter reinforcement or the depth of the implanted reinforcement does not meet the requirements, and ensures the quality of the implanted reinforcement. The method also avoids the need to remove and damage the existing structure when a new structure column is built at the beam-column dense reinforcement joint of the existing structure, greatly reduces the construction cost, speeds up the construction period, and does not need to unload the plate-span floor, reducing the impact on the surrounding environment.

[0023] The application will be further described below in conjunction with the drawings and specific embodiments.

[0024] Referring to Figure 1 , a top view of the new structure column at the beam-column dense reinforcement joint is shown. Referring to Figure 2 , a cross-sectional view of the new structure column at the beam-column dense reinforcement joint is shown. The application will be further described below in conjunction with Figure 1 and Figure 2 , a new structure column at a beam-column dense reinforcement joint and a construction method thereof.

[0025] As shown in Figure 1 and Figure 2 , the new structure column at the beam-column dense reinforcement joint of the application comprises: a plurality of column foot bars, a plurality of column foot bars are implanted into the existing support beam 1 according to the design position of the column foot 2; a plurality of column main bars 7, a plurality of column main bars 7 are vertically arranged according to the design position of the column body 3 and are fixedly connected with the corresponding column foot bars, and the diameter of the column main bars 7 is greater than the diameter of the column foot bars; the column foot 2 and the column body 3 are integrally poured, and the width of the poured column foot 2 is greater than the width of the column body 3. By setting the column foot bar, the column main bar 7 is fixedly connected with the column foot bar, and the column main bar 7 and the column foot bar are integrally poured, thereby integrally forming the column foot 2 and the column body 3, so that the structure of the column body 3 is more stable.

[0026] In an embodiment, the bottom of the column foot bar is embedded into the upper part of the existing support beam 1. By arranging the column foot bars densely and making the design range of the column foot bars larger than that of the column main bars 7, the column foot bars can be embedded into the existing support beam 1 by half of the depth and still achieve the same effect of supporting and fixing the column 3.

[0027] In an embodiment, the column foot bar includes a plurality of first foot bars arranged at intervals along the edge of the design position of the column foot 2. The first foot bar includes a vertical bar segment and a horizontal bar segment connected perpendicularly to the vertical bar segment. The end of the vertical bar segment is embedded into the existing support beam 1. The end of the horizontal bar segment extends towards the direction of the column 3 and is located within the design range of the column 3.

[0028] In an embodiment, the column foot bar further includes a plurality of first open stirrups 5 arranged at intervals. The first open stirrups 5 are arranged on the plurality of first foot bars on the same side in a downward opening manner. The top of the first open stirrup 5 is fixedly connected to the horizontal bar segment of the corresponding first foot bar. The end of the first open stirrup is embedded into the existing support beam 1. The depth of the embedding of the first open stirrup into the existing support beam 1 is less than the depth of the embedding of the vertical bar segment into the existing support beam 1.

[0029] In an embodiment, the column foot bar further includes a plurality of second foot bars and a plurality of second open stirrups 9 arranged at intervals. The two ends of the second foot bar form a first horizontal segment between the horizontal bar segment of the first foot bar and the existing support beam 1, an inclined segment connected to the first horizontal segment, and a second horizontal segment connected to the two inclined segments. The second open stirrup 9 is arranged on the inclined segments and the second horizontal segments of the plurality of second foot bars in a downward opening manner. The top of the second open stirrup 9 is fixedly connected to the corresponding inclined segments and the second horizontal segments. The end of the second open stirrup 9 is embedded into the existing support beam 1.

[0030] In an embodiment, the height of the column foot 2 must meet the basic anchoring depth requirement of the column main bar 7.

[0031] The application also provides a construction method of a new structural column at a beam-column dense steel bar joint, including the following steps: drilling holes in the existing support beam 1, embedding a plurality of column foot bars into the drilled holes of the existing support beam 1 according to the design position of the column foot 2, vertically connecting a plurality of column main bars 7 to the column foot bars according to the design position of the column 3, providing a formwork, installing the formwork to the pouring position, and integrally pouring the column foot 2 and the column 3.

[0032] In one embodiment, the implanting process of the column foot bar is as follows: providing a plurality of first foot bars, implanting the end of the vertical bar section of the first foot bar into the existing support beam 1 at the edge of the design position, and the end of the horizontal bar section extends towards the direction of the column 3; providing a plurality of first open stirrups 5, buckling the first open stirrups 5 on the horizontal bar section of the first foot bar, implanting the two ends of the first open stirrups 5 into the existing support beam 1, and fixing the first open stirrups 5 with the horizontal bar section of the first foot bar; providing second foot bars, fixing the first horizontal section of the two ends of the second foot bars with the corresponding first open stirrups 5; providing second open stirrups 9, buckling the second open stirrups 9 on the second foot bars, implanting the two ends of the second open stirrups 9 into the existing support beam 1, and fixing the top of the second open stirrups 9 with the corresponding inclined section and second horizontal section of the second foot bars; providing a plurality of straight bars 8, and fixing the straight bars 8 with the corresponding vertical bar sections of the first foot bars.

[0033] In one embodiment, before pouring the column foot 2 and the column 3, the structure of the upper surface of the existing support beam 1 is damaged and roughened, so that the poured column foot 2 is better connected with the existing support beam 1.

[0034] The above detailed description of the present application is combined with the embodiments of the drawings, and those of ordinary skill in the art can make various changes to the present application according to the above description. Therefore, some details in the embodiments should not constitute a limitation on the present application, and the scope of protection of the present application will be defined by the appended claims.

Claims

1. A new construction column at a beam column dense reinforcement joint, characterized by: The new structure column comprises: a plurality of column foot bars, the plurality of column foot bars are partially implanted in an existing support beam (1) according to the design position of a column foot (2); a plurality of column main bars (7), the plurality of column main bars (7) are vertically arranged according to the design position of a column body (3) and are fixedly connected with the corresponding column foot bars, and the diameter of the column main bars (7) is greater than the diameter of the column foot bars; a column foot (2) and a column body (3) formed by integral pouring, and the width of the column foot (2) formed by pouring is greater than the width of the column body (3); the column foot bar comprises a plurality of first foot bars arranged at intervals along the edge close to the design position of the column foot (2), the first foot bar comprises a vertical bar section and a horizontal bar section connected perpendicularly with the vertical bar section, the end of the vertical bar section is implanted in the existing support beam (1), the end of the horizontal bar section extends in the direction of the column body (3), and the end of the horizontal bar section is located in the design range of the column body (3); the column foot bar further comprises a plurality of second foot bars and a plurality of second open stirrups (9), the two ends of the second foot bar form a first horizontal section between the horizontal bar section of the first foot bar and the existing support beam (1), an inclined section connected with the first horizontal section, and a second horizontal section connected with the two inclined sections; the second open stirrup (9) is buckled on the inclined section and the second horizontal section of the plurality of second foot bars in a way that the opening faces downward, the top of the second open stirrup (9) is fixedly connected with the corresponding inclined section and second horizontal section; the end of the second open stirrup (9) is implanted in the existing support beam (1).

2. A new construction column at a beam column dense reinforcement joint according to claim 1, characterized by: the bottom of the column foot bar is implanted to the upper part of the existing support beam (1).

3. A new construction column at a beam column dense reinforcement joint according to claim 1, characterized by: the column foot bar further comprises a plurality of first open stirrups (5), the first open stirrup (5) is buckled on the plurality of first foot bars arranged on the same side in a way that the opening faces downward, and the top of the first open stirrup (5) is fixedly connected with the horizontal bar section of the corresponding first foot bar; the end of the first open stirrup is implanted in the existing support beam (1), and the depth of the first open stirrup implanted in the existing support beam (1) is less than the depth of the vertical bar section implanted in the existing support beam (1).

4. A new construction column at a beam column dense reinforcement joint according to claim 1, characterized by: the column foot bar further comprises a plurality of flat bars (8), the flat bar (8) is arranged close to the top surface of the existing support beam (1), and the flat bar (8) is fixedly connected with the vertical bar section of the corresponding first foot bar.

5. A method of constructing a new structural column at a beam column dense reinforcement joint according to claim 1, characterized by: The method comprises the following steps: drilling holes on the existing support beam (1), and partially implanting the plurality of column foot bars in the drilled holes of the existing support beam (1) according to the design position of the column foot (2); vertically fixing the plurality of column main bars (7) to the column foot bars according to the design position of the column body (3); providing a formwork, installing the formwork to the pouring position, and integrally pouring the column foot (2) and the column body (3).

6. The method of constructing a new structural column at a beam column dense reinforcement joint according to claim 5, wherein: The implantation process of the column foot bar is as follows: providing a plurality of first foot bars, implanting the ends of the vertical bar sections of the first foot bars in the existing support beam (1) at intervals at the edge of the design position of the column foot (2), and extending the ends of the horizontal bar sections in the direction of the column body (3); The first open stirrup (5) is provided, and the first open stirrup (5) is buckled downwards on the flat section of the first stirrup, the two ends of the first open stirrup (5) are embedded into the existing support beam (1), and the first open stirrup (5) is fixedly connected with the flat section of the first stirrup; The second stirrup is provided, and the first horizontal section at the two ends of the second stirrup is fixedly connected with the corresponding first open stirrup (5); The second open stirrup (9) is provided, and the second open stirrup (9) is buckled downwards on the second stirrup, the two ends of the second open stirrup (9) are embedded into the existing support beam (1), and the top of the second open stirrup (9) is fixedly connected with the corresponding inclined section and the second horizontal section of the second stirrup; The plurality of straight stirrups (8) are provided, and the straight stirrups (8) are fixedly connected with the vertical sections of the corresponding first stirrups.

Images