A construction method for a large cantilevered balcony without support

Abstract

The present invention discloses a construction method for a large cantilevered balcony without support, which belongs to the field of construction engineering technology. It solves the problem that if the cantilevered balcony still maintains the original construction method, it will not only hinder the shortening of the construction period, but also cannot ensure that the cantilevered balcony of each room maintains the same bearing strength and structure during the actual construction process. It includes the following steps: mixing concrete by a mixer in an injection molding and demoulding production line to obtain precast concrete; completing the steel frame assembly in the mold in the injection molding and demoulding production line, and requiring the volume of the mold to be smaller than the volume of the precast concrete; and lifting the mold in the injection molding and demoulding production line by a lifting platform in the injection molding and demoulding production line. The present invention can prefabricate molds according to the shape of cantilevered balconies, realize mass production of prefabricated balcony floors, and quickly connect with the reserved steel bars in the building structure and grout concrete to form an integrated structure, enhance structural strength and connection stability, and improve construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a construction method for an unsupported large cantilevered balcony. Background Art

[0002] A cantilevered balcony, also known as a suspended balcony or an overhanging balcony, is a balcony design that extends from the main structure of a building. It is characterized by the lack of direct vertical support at the bottom or in some areas, giving people a light and elegant visual experience. This design is common in modern buildings, which not only increases the practicality of the living space, but also adds a touch of dynamism to the appearance of the building. A cantilevered balcony is usually composed of structures such as beams, slabs and columns, which jointly bear the weight of the balcony to ensure its structural stability. When designing, it is necessary to consider the impact of various natural factors such as wind force and earthquake force on the balcony to ensure its safety.

[0003] The design and construction of cantilever balconies need to follow strict building codes and engineering standards to ensure their load-bearing capacity and durability. They are usually made of reinforced concrete or steel structures to achieve sufficient strength and stability. Functionally, cantilever balconies provide residents with an outdoor activity space that can be used for leisure, viewing scenery or planting plants. In addition, a reasonable balcony design can also increase indoor lighting and ventilation, improving living comfort.

[0004] Aesthetically, the design of cantilever balconies can be very diverse, and their shapes, sizes and material choices can reflect the overall style of the building and the creativity of the designer. Whether it is simple and modern straight lines or elegant curves, cantilever balconies can be harmoniously integrated with the main building and become part of the city skyline. In general, cantilever balconies are not only a practical architectural element, but also an important part of the aesthetics of modern urban architecture.

[0005] The current construction method is gradually developing towards the direction of prefabricated panel assembly. Faced with this situation, if the current cantilevered balconies still maintain the original construction method, it will not only hinder the shortening of the construction period, but also in the actual construction process, it cannot ensure that the cantilevered balcony of each room maintains the same bearing strength and structure.

[0006] Therefore, a construction method for an unsupported large cantilevered balcony is proposed to solve or alleviate the above problems. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a construction method for an unsupported large cantilevered balcony.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A method for constructing an unsupported large cantilevered balcony comprises the following steps:

[0010] The concrete is mixed by a mixer in the injection molding and demoulding production line to obtain precast concrete;

[0011] The steel frame is assembled in the mold in the injection molding and demoulding production line, and the volume of the mold is required to be smaller than the volume of the precast concrete;

[0012] Lift the mold in the injection molding and demoulding production line through the lifting platform in the injection molding and demoulding production line, so that the conveying pipeline at the mixer outlet is connected with the rotating pipe joint on the mold in the injection molding and demoulding production line;

[0013] Make the molds in the injection molding and demoulding production line rotate in a circle on the lifting platform in the injection molding and demoulding production line, and maintain a rotation frequency of 1-3s / circle;

[0014] The precast concrete is continuously introduced into the rotating mold through the conveying pipe and the rotating pipe joint;

[0015] After the precast concrete pouring is completed, the mold is stopped from rotating and the mold is moved downward by the lifting platform;

[0016] Remove the mold, wait for the concrete to solidify, then scrape away the excess concrete to obtain the prefabricated balcony floor;

[0017] Align the two rows of holes adjacent to each other in the length direction of the prefabricated balcony floor with the two rows of steel bars reserved at the edge of the building, and let the two rows of steel bars pass through the holes, and then twist the steel bars to limit the prefabricated balcony floor;

[0018] Concrete is poured into the holes and grooves of the prefabricated balcony floor, and concrete is poured at the joints between the prefabricated balcony floor and the building until it solidifies and takes shape, thereby obtaining a cantilevered balcony.

[0019] Preferably, the prefabricated balcony floor comprises a prefabricated panel, and the prefabricated panel comprises a connecting section and a supporting section. The connecting section is provided with two rows of holes which are arranged along the width direction of the prefabricated panel and away from the supporting section. The number of holes in each row is a plurality, and the plurality of holes are evenly spaced along the length direction of the prefabricated panel. A groove body which is arranged away from the supporting section and is connected to the same row of holes is provided on a side panel surface of the connecting section, and the groove body is arranged through one end of the connecting section away from the supporting section.

[0020] Preferably, the injection molding and demolding production line includes a lifting platform, a table fixedly connected to the movable end of the lifting platform, a mold movably arranged above the table, and a mixer arranged above the mold, the top surface of the mold is connected to a rotating pipe joint, the mixer is connected to a conveying pipe, and the conveying pipe is used to be connected to the rotating pipe joint.

[0021] Preferably, the top surface of the table is fixedly connected to a circular track, the bottom surface of the mold is fixedly connected to a universal wheel rollingly connected in the circular track, and a driving member for driving the mold to rotate is provided on the table, and the driving member is detachably connected to the mold.

[0022] Preferably, the driving member includes a servo motor fixedly connected to the bottom surface of the table and a telescopic rod passing through the table and coaxially fixedly connected to the output shaft of the servo motor. The upper end of the telescopic rod is polygonal, and the bottom surface of the mold is provided with a groove engaged with the telescopic rod.

[0023] Preferably, two straight tracks communicating with the circular track are fixedly connected to the table top, and the two straight tracks are arranged in the same direction and in parallel.

[0024] Preferably, the outer ring of one end of the delivery pipeline away from the mixer is fixedly connected to a flange, and the delivery pipeline is detachably connected to a rotating pipe joint via the flange.

[0025] Preferably, the mold includes, from bottom to top, a lower template, a frame and an upper template that are detachably connected to each other, the groove is opened on the bottom surface of the lower template, the upper template is provided with a through hole coaxially arranged with the rotating pipe joint, and the rotating pipe joint is fixedly connected to the upper template.

[0026] Preferably, the method further comprises the following steps:

[0027] Pre-measure the building dimensions and design the shape of the cantilevered balcony according to the building dimensions;

[0028] The mold is opened according to the shape of the designed cantilevered balcony and the connecting section and the supporting section are distinguished.

[0029] The present invention has the following beneficial effects:

[0030] The present invention can pre-design a mold according to the shape of the cantilevered balcony of the building, and complete the prefabrication production of the prefabricated balcony floor in batches according to the mold. The prefabricated balcony floor after production can be quickly connected with the steel bars reserved on the building structure, and concrete grouting can be performed, so that the prefabricated balcony floor can form an integrated structure with the building structure. The cantilevered balcony formed by the prefabricated balcony floor can have extremely strong structural strength itself, and can also have strong connection strength with the building structure, and the two are not easy to separate. At the same time, the construction of the cantilevered balcony in this way can cooperate with the current way of building houses with prefabricated panels to accelerate the efficiency of the overall building formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a flowchart of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of the prefabricated balcony floor in the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the injection molding and demoulding production line in the present invention.

[0035] 1. Support frame; 2. Mixer; 3. Conveying pipeline; 4. Lifting platform; 5. Table; 6. Flange; 7. Rotating pipe joint; 8. Upper template; 9. Frame; 10. Lower template; 11. Universal wheel; 12. Circular track; 13. Straight track; 14. Servo motor; 15. Telescopic rod; 16. Prefabricated panel; 17. Hole; 18. Trough. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the invention is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] A construction method for a large cantilevered balcony without support, such as Figure 1 As shown, the following steps are included:

[0043] Pre-measure the building dimensions and design the shape of the cantilevered balcony according to the building dimensions;

[0044] According to the shape of the designed cantilever balcony, the mold is opened and the connecting section and the supporting section are distinguished;

[0045] Mixing concrete by the mixer 2 in the injection molding and demoulding production line to obtain precast concrete;

[0046] The steel frame is assembled in the mold in the injection molding and demoulding production line, and the volume of the mold is required to be smaller than the volume of the precast concrete;

[0047] The mold in the injection molding and demoulding production line is lifted by the lifting platform 4 in the injection molding and demoulding production line, so that the conveying pipeline 3 at the discharge port of the mixer 2 is connected with the rotating pipe joint 7 on the mold in the injection molding and demoulding production line;

[0048] The mold in the injection molding and demoulding production line is made to rotate in a circle on the lifting platform 4 in the injection molding and demoulding production line, and the rotation frequency is maintained at 1-3s / circle;

[0049] The precast concrete is continuously introduced into the rotating mold through the conveying pipe 3 and the rotating pipe joint 7;

[0050] After the precast concrete pouring is completed, the mold is stopped from rotating and the mold is moved downward by the lifting platform 4;

[0051] The mold is removed, and after the concrete is solidified, the excess concrete is removed to obtain a prefabricated balcony floor. The prefabricated balcony floor includes a prefabricated panel 16, such as Figure 2 As shown, the prefabricated panel 16 includes a connecting section and a supporting section. The connecting section is provided with two rows of holes 17 arranged along the width direction of the prefabricated panel 16 and away from the supporting section. The number of holes 17 in each row is a plurality, and the plurality of holes 17 are evenly spaced along the length direction of the prefabricated panel 16. A groove 18 is provided on one side of the plate surface of the connecting section, which is arranged away from the supporting section and connected to the same row of holes 17. The groove 18 runs through one end of the connecting section away from the supporting section.

[0052] Align the two rows of holes 17 adjacent to each other in the length direction of the prefabricated balcony floor with the two rows of steel bars reserved at the edge of the building, and allow the two rows of steel bars to pass through the holes 17, and then twist the steel bars to limit the prefabricated balcony floor;

[0053] Concrete is poured into the holes 17 and the grooves 18 of the prefabricated balcony floor, and concrete is poured at the joints between the prefabricated balcony floor and the building until solidification takes shape, thereby obtaining a cantilevered balcony.

[0054] The invention relates to a construction method for a cantilevered balcony. By customizing a mold in advance according to the design shape of the cantilevered balcony of a building, large-scale production of prefabricated balcony floors is achieved. After the production is completed, these prefabricated floors can be quickly connected with preset steel bars in the building structure and poured with concrete to ensure that the prefabricated balcony floors are closely combined with the main body of the building to form a unified structural system. In addition, the prefabricated balcony floor not only has a stable structure itself, but also has a very strong connection with the building structure and is difficult to separate. The method for constructing a cantilevered balcony can be integrated with the current prefabricated component construction technology to significantly improve the speed and efficiency of building construction.

[0055] Preferably, if Figure 3As shown, the injection molding demoulding production line includes a lifting platform 4, a table 5 fixedly connected to the movable end of the lifting platform 4, a mold movably arranged above the table 5, and a mixer 2 arranged above the mold. The top surface of the mold is connected with a rotating pipe joint 7, and the mixer 2 is connected with a conveying pipeline 3, which is used to be connected with the rotating pipe joint 7. The top surface of the table 5 is fixedly connected with an annular track 12, and the bottom surface of the mold is fixedly connected with a universal wheel 11 rollingly connected in the annular track 12. A driving member for driving the mold to rotate is arranged on the table 5, and the driving member is connected to the mold. The connection is detachable, and the driving part includes a servo motor 14 fixedly connected to the bottom surface of the table 5 and a telescopic rod 15 that penetrates the table 5 and is coaxially fixedly connected to the output shaft of the servo motor 14. The upper end of the telescopic rod 15 is polygonal, and a groove that engages with the telescopic rod 15 is provided on the bottom surface of the mold. Two straight tracks 13 connected to the annular track 12 are fixedly connected to the table 5. The two straight tracks 13 are arranged in the same direction and in parallel. The outer ring of the end of the conveying pipe 3 away from the mixer 2 is fixedly connected to the flange 6, and the conveying pipe 3 is detachably connected to the rotating pipe joint 7 through the flange 6.

[0056] The mold includes, from bottom to top, a lower mold plate 10, a frame 9 and an upper mold plate 8 which are detachably connected to each other. A groove is provided on the bottom surface of the lower mold plate 10. A through hole coaxially arranged with the rotating pipe joint 7 is provided on the upper mold plate 8. The rotating pipe joint 7 is fixedly connected to the upper mold plate 8.

[0057] During the construction of the steel frame in the mold, the mixer 2 simultaneously stirs the concrete, which can improve work efficiency and perform two tasks simultaneously. When the conveying pipeline 3 and the rotating pipe joint 7 are connected, the gap between the two is sealed. At this time, the lifting platform 4 drives the table 5 to rise, and then after the flange 6 and the rotating pipe joint 7 are aligned and fitted, the two squeeze the sealing ring, and people manually connect the flange 6 and the rotating pipe joint 7 with bolts and nuts to ensure the sealing effect and connection strength between the two, so that the two are not easily separated.

[0058] When the mold rotates, the telescopic rod 15 extends and inserts into the groove, driving the mold to rotate together, and the mold rolls in the annular track 12 through the universal wheel 11. With the support of the telescopic rod 15 for the mold, the mold is not easy to shake during the rotation and is more stable. The concrete in the mixer 2 is introduced into the mold through the conveying pipe 3 and the rotating pipe joint 7. After the concrete enters the mold, due to the rotation of the mold, the concrete is thrown to the outer circle under the action of centrifugal force, so that the concrete can be filled in the mold from the edge inside the mold, and the concrete is kept compacted to remove bubbles in the concrete and avoid the appearance of bubbles in the concrete in the mold. Since the volume of the mold is smaller than the volume of the concrete, the concrete can completely fill the inside of the mold after filling. After the concrete pouring is completed, the mold stops rotating to obtain the required precast panel 16.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A construction method for an unsupported large cantilevered balcony, characterized in that: The following steps are included: Mixing concrete using a mixer (2) in an injection molding and demoulding production line to obtain precast concrete; The steel frame is assembled in the mold in the injection molding and demoulding production line, and the volume of the mold is required to be smaller than the volume of the precast concrete; The mold in the injection molding and demoulding production line is lifted by a lifting platform (4) in the injection molding and demoulding production line, so that the conveying pipeline (3) at the discharge port of the mixer (2) is connected with the rotating pipe joint (7) on the mold in the injection molding and demoulding production line; The mold in the injection molding and demoulding production line is caused to rotate in a circle on a lifting platform (4) in the injection molding and demoulding production line, and the rotation frequency is maintained at 1-3s / circle; The precast concrete is continuously introduced into the rotating mold through the conveying pipe (3) and the rotating pipe joint (7); After the pouring of the precast concrete is completed, the mold is stopped from rotating and the mold is moved downward by the lifting platform (4); Remove the mold, wait for the concrete to solidify, then scrape away the excess concrete to obtain the prefabricated balcony floor; Align two rows of holes (17) adjacent to each other in the length direction of the prefabricated balcony floor with two rows of steel bars reserved at the edge of the building, and allow the two rows of steel bars to pass through the holes (17), and then twist the steel bars to limit the position of the prefabricated balcony floor; Concrete is poured into the holes (17) and the grooves (18) of the prefabricated balcony floor, and concrete is poured at the joints between the prefabricated balcony floor and the building until the concrete is solidified and formed, thereby obtaining a cantilevered balcony.

2. The method for constructing a large cantilevered balcony without support according to claim 1, characterized in that: The prefabricated balcony floor comprises a prefabricated panel (16), wherein the prefabricated panel (16) comprises a connecting section and a supporting section, wherein the connecting section is provided with two rows of holes (17) arranged along the width direction of the prefabricated panel (16) and away from the supporting section, wherein the number of holes (17) in each row is a plurality, and the plurality of holes (17) are evenly spaced along the length direction of the prefabricated panel (16), wherein a groove body (18) is provided on a side plate surface of the connecting section and is arranged away from the supporting section and connected to the holes (17) in the same row, and wherein the groove body (18) passes through one end of the connecting section away from the supporting section.

3. The construction method of a large cantilevered balcony without support according to claim 1 is characterized in that: The injection molding demoulding production line comprises a lifting platform (4), a table plate (5) fixedly connected to the movable end of the lifting platform (4), a mold movably arranged above the table plate (5), and a mixer (2) arranged above the mold, the top surface of the mold is connected to a rotating pipe joint (7), the mixer (2) is connected to a conveying pipeline (3), and the conveying pipeline (3) is arranged to be connected to the rotating pipe joint (7).

4. The construction method of a large cantilevered balcony without support according to claim 3 is characterized in that: The top surface of the table (5) is fixedly connected to a circular track (12), the bottom surface of the mold is fixedly connected to a universal wheel (11) that is rollingly connected in the circular track (12), and a driving member for driving the mold to rotate is arranged on the table (5), and the driving member is detachably connected to the mold.

5. The method for constructing a large cantilevered balcony without support according to claim 4, characterized in that: The driving member comprises a servo motor (14) fixedly connected to the bottom surface of the table (5) and a telescopic rod (15) penetrating the table (5) and coaxially fixedly connected to the output shaft of the servo motor (14); the upper end of the telescopic rod (15) is polygonal, and the bottom surface of the mold is provided with a groove engaged with the telescopic rod (15).

6. The construction method of a large cantilevered balcony without support according to claim 5 is characterized in that: Two straight tracks (13) communicating with the annular track (12) are fixedly connected to the platform (5), and the two straight tracks (13) are arranged in the same direction and in parallel.

7. The construction method of a large cantilevered balcony without support according to claim 6 is characterized in that: The outer ring of one end of the delivery pipeline (3) away from the mixer (2) is fixedly connected to a flange (6), and the delivery pipeline (3) is detachably connected to a rotating pipe joint (7) via the flange (6).

8. The method for constructing a large cantilevered balcony without support according to claim 7, characterized in that: The mold comprises, from bottom to top, a lower mold plate (10), a frame (9) and an upper mold plate (8) which are detachably connected to each other, the groove is provided on the bottom surface of the lower mold plate (10), the upper mold plate (8) is provided with a through hole coaxially arranged with the rotating pipe joint (7), and the rotating pipe joint (7) is fixedly connected to the upper mold plate (8).

9. The method for constructing a large cantilevered balcony without support according to claim 1, characterized in that: It also includes the following steps, Pre-measure the building dimensions and design the shape of the cantilevered balcony according to the building dimensions; The mold is opened according to the shape of the designed cantilevered balcony and the connecting section and the supporting section are distinguished.

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