Arc-shaped plate edge construction method

Abstract

The invention discloses a construction method for an arc-shaped plate edge. The arc-shaped plate edge comprises a cantilever floor slab and a supporting structure. The supporting structure comprises main structure supporting steel and a bearing support welded to the main structure supporting steel, a high-span formwork and a low-span formwork are arranged on the bearing support, a plugging piece is arranged between the high-span formwork and the low-span formwork, and reinforcing ribs are arranged on the bearing support. The bearing support is welded to the main structure supporting steel and synchronously constructed on the building body along with the main structure supporting steel, the step of additionally welding a part support in the follow-up construction process is avoided, the support structure is a permanent structure and does not need to be dismantled in the follow-up process, the construction steps are saved, and meanwhile compared with a follow-up welding temporary supporting structure, the construction cost is reduced. According to the method, the precision is higher, the efficiency is higher, the operation is simple, a large amount of phenomenon operation workload is reduced, and the heavy work of bending and prying straight by manual construction workers at a high place is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a method for constructing an arc-shaped plate edge. Background Art

[0002] In recent years, more and more buildings have adopted high-altitude cantilevered structures. Such structures have greatly enriched the aesthetics and individuality of the buildings. During the construction of ultra-high-rise curved floor slabs, quality control technology is an important part of the construction plan and a reliable guarantee for construction safety.

[0003] The stress of super-high-rise steel structure floor is complex, and horizontal and vertical stress, torsional force and warping of reinforced floor need to be considered. The conventional practice of existing external cantilever construction is to construct through cantilever lowering, with angle steel used for cantilever support and broken line fitting curve for arc edge. However, during the installation process, there are disadvantages such as difficult welding work, high requirements and low work efficiency. It is easy for the horizontal axis and longitudinal elevation of the cantilever plate to deviate, as well as the flatness and verticality defects of the cantilever plate and the misalignment of the cantilever lap joints.

[0004] In view of this, in view of the shortcomings of the external cantilever construction welding work such as great difficulty, high requirements and low work efficiency, it is urgently necessary to invent a curved plate edge construction method with fast construction speed and good construction quality to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a method for constructing an arc-shaped plate edge in view of the above-mentioned shortcomings, so as to solve the shortcomings of the welding work in the external cantilever construction being difficult, demanding and having low work efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: a method for constructing an arc-shaped plate edge, comprising:

[0007] Cantilevered floor slabs and supporting structures;

[0008] The support structure comprises a main structure support steel and a bearing bracket welded to the main structure support steel, a high span template and a low span template are arranged on the bearing bracket, a blocking piece is arranged between the high span template and the low span template, a reinforcing rib is arranged on the bearing bracket, and a side template is arranged at one end of the bearing bracket away from the main structure support steel;

[0009] The reinforcing ribs include a first reinforcing rib, a second reinforcing rib and a third reinforcing rib;

[0010] The construction method comprises the following steps:

[0011] S1. The load-bearing bracket is welded on the main structure support steel and is constructed on the building body simultaneously with the main structure support steel;

[0012] S2. Lay the high-span formwork and the low-span formwork on the bearing bracket. The high-span formwork is trimmed according to the dividing line between the high-span formwork and the low-span formwork, and the low-span formwork is trimmed according to the arc line of the floor edge;

[0013] S3. Set a blocking piece between the high-span formwork and the low-span formwork, and set a side formwork along the edge arc of the floor slab on the low-span formwork;

[0014] S4, reinforcing ribs are arranged in the high-span formwork, the low-span formwork and the side formwork, the third reinforcing rib is movably arranged between the first reinforcing rib and the second reinforcing rib, and the third reinforcing rib is fixedly connected to the side formwork;

[0015] S5. Pour concrete in the cavity formed by the high-span formwork, low-span formwork and side formwork, and wait until the pouring strength of the concrete floor meets the design requirements.

[0016] Furthermore, during the construction process of the main structure support steels welded with the load-bearing brackets in step S1, the heights of the main structure support steels are calibrated based on the load-bearing brackets so that the load-bearing brackets are on the same horizontal plane.

[0017] Furthermore, before pouring concrete in step S5, the third reinforcing ribs and the side form positions are adjusted to perform deviation adjustment so that the arc shape of the cantilever floor edge meets the design requirements.

[0018] Furthermore, reinforcing steel is provided at one end of the load-bearing bracket away from the main structure supporting steel.

[0019] Furthermore, the load-bearing bracket is provided with load-bearing steel for accommodating the high-span formwork;

[0020] The load-bearing steel is L-shaped;

[0021] The bearing steel is welded to the bearing bracket to support the high-span formwork;

[0022] The low-span template is arranged on a bearing bracket.

[0023] Furthermore, there is a horizontal height difference between the high-span template and the low-span template;

[0024] The blocking piece is L-shaped and has the same height as the bearing steel to block the gap between the high-span formwork and the low-span formwork.

[0025] Furthermore, one end of the low-span template extends 250 mm outside the load-bearing bracket, and the thickness of the low-span template is 180 mm.

[0026] Furthermore, the side mold thickness is 2 mm;

[0027] The side mold has an L-shaped cross section, and the bottom length of the side mold is 50 mm;

[0028] The side of the side formwork away from the main structure supporting steel is arc-shaped for fitting with the arc-shaped side of the low-span formwork.

[0029] Furthermore, a fixing piece is provided on the reinforcing rib, and the fixing piece is a fixing bolt;

[0030] The fixing member is used to fix the third reinforcing rib and the low span template on the bearing bracket.

[0031] The beneficial effects of the present invention are embodied in:

[0032] In the present invention, the load-bearing bracket is welded to the main structure support steel and is constructed on the building body synchronously with the main structure support steel, thereby avoiding the need for additional welding steps of the bracket in the subsequent construction process. Moreover, the bracket structure is a permanent structure and does not need to be dismantled subsequently, thus saving construction steps. At the same time, compared with the subsequent welding of temporary support structures, the method adopted in the present application has higher precision, higher efficiency and simpler operation, thus reducing a large amount of phenomenon operation workload and reducing the heavy work of bending and straightening by manual construction workers at heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 It is a schematic diagram of the prior art of the present invention;

[0035] Figure 3 This is a top view of the construction of the curved plate edge of the present invention;

[0036] Figure 4 It is a top view of the structure of the low-span template of the present invention.

[0037] In the figure:

[0038] 01. Main structure support steel; 02. Temporary support; 03. I-shaped steel;

[0039] 2. Load-bearing bracket; 21. Reinforcement steel;

[0040] 3. High span template;

[0041] 4. Low span template;

[0042] 5. Side mold;

[0043] 6. Reinforcement rib; 61. First reinforcement rib; 62. Second reinforcement rib; 63. Third reinforcement rib;

[0044] 7. Bearing steel;

[0045] 8. Sealing parts. DETAILED DESCRIPTION

[0046] 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 only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-4 The present invention discloses a method for constructing an arc-shaped plate edge, comprising:

[0048] Cantilevered floor slabs and supporting structures;

[0049] The support structure includes a main structure support steel 01 and a bearing bracket 2 welded to the main structure support steel 01, a high span formwork 3 and a low span formwork 4 are arranged on the bearing bracket 2, a blocking piece 8 is arranged between the high span formwork 3 and the low span formwork 4, a reinforcing rib 6 is arranged on the bearing bracket 2, and a side form 5 is arranged at one end of the bearing bracket 2 away from the main structure support steel 01;

[0050] The reinforcing ribs 6 include a first reinforcing rib 61, a second reinforcing rib 62 and a third reinforcing rib 63;

[0051] The construction method comprises the following steps:

[0052] S1, the load-bearing bracket 2 is welded on the main structure support steel 01, and is constructed on the building body simultaneously with the main structure support steel 01;

[0053] S2, laying the high-span formwork 3 and the low-span formwork 4 on the bearing bracket 2, cutting the high-span formwork 3 according to the dividing line between the high-span formwork 3 and the low-span formwork 4, and cutting the low-span formwork 4 according to the arc line of the floor edge;

[0054] S3, a blocking member 8 is provided between the high-span formwork 3 and the low-span formwork 4, and a side formwork 5 is provided at the low-span formwork 4 along the arc line of the floor slab edge;

[0055] S4, reinforcing ribs 6 are arranged in the high-span formwork 3, the low-span formwork 4 and the side formwork 5, the third reinforcing ribs 63 are movably arranged between the first reinforcing ribs 61 and the second reinforcing ribs 62, and the third reinforcing ribs 63 are fixedly connected to the side formwork 5;

[0056] S5, pour concrete in the cavity formed by the high-span formwork 3, the low-span formwork 4 and the side formwork 5, and wait until the pouring strength of the concrete floor meets the design requirements.

[0057] In the prior art, such as Figure 2As shown, the temporary support of the cantilever floor edge formwork in the prior art adopts a triangular bracket composed of angle steel, which is welded to the web of the side beam, the flange plate or the tube wall of the box-type steel column. A temporary support is set approximately every 1.4 meters at the side beam position. The temporary support is fixed at the edge of the plate before the installation of the steel truss floor decking. After the pouring strength of the concrete floor meets the design requirements, the edge formwork and the bracket are removed and used every three floors after removal.

[0058] The above-mentioned technologies have disadvantages such as great difficulty in welding work, high requirements and low work efficiency, and the above-mentioned disadvantages will directly cause the horizontal axis deviation and longitudinal elevation deviation, affecting the construction quality, and after the welding is completed, the demolition process is required.

[0059] Therefore, in order to optimize the above-mentioned problems, in the present application, the load-bearing bracket 2 is welded to the main structure support steel 01, and is constructed on the building simultaneously with the main structure support steel 01, avoiding the need for additional welding steps of the bracket in the subsequent construction process, and the bracket structure is a permanent structure and does not need to be dismantled subsequently, saving construction steps. At the same time, compared with the subsequent welding of temporary support structures, the method adopted in the present application is more accurate, more efficient and easier to operate, reducing a large amount of phenomenon operation workload and reducing the heavy work of bending and prying by manual construction workers at high places.

[0060] The use of this technology provides a new solution for the construction of curved floor slabs in super high-rise buildings of similar projects.

[0061] It should be noted that during the construction process of the main structure support steel 01 welded with the load-bearing bracket 2 in step S1, the height of each main structure support steel 01 is calibrated with the load-bearing bracket 2 as a reference, so that each load-bearing bracket 2 is on the same horizontal plane, so as to ensure the construction accuracy of the subsequent cantilever floor.

[0062] In the present application, before pouring concrete in step S5, the third reinforcing rib 63 and the side form 5 are adjusted to adjust the deviation so that the arc shape of the edge of the cantilevered floor meets the design requirements. Furthermore, the thickness of the side form 5 is 2 mm;

[0063] like Figure 3 As shown in the figure, according to the construction drawings, adjust the curved edge of the cantilever floor slab to be consistent with the construction drawings.

[0064] The side mold 5 has an L-shaped cross section, and the bottom length of the side mold 5 is 50 mm;

[0065] The side of the side form 5 away from the main structure support steel 01 is arc-shaped to fit the arc-shaped side of the low span form 4. It should be noted that the structure of the low span form 4 is as follows: Figure 4 shown.

[0066] The above structural setting provides corresponding adjustment space and redundancy for subsequent construction processes. The accuracy can be adjusted according to actual conditions to meet construction needs.

[0067] It should be noted that a reinforcing steel 21 is provided at one end of the load-bearing bracket 2 away from the main structure support steel 01 , and the reinforcing steel 21 is used to improve the overall strength of the load-bearing bracket 2 .

[0068] In the present application, the load-bearing bracket 2 is provided with a load-bearing steel 7 for accommodating the high-span formwork 3;

[0069] The load-bearing steel 7 is L-shaped;

[0070] The bearing steel 7 is welded to the bearing bracket 2 to support the high-span formwork 3;

[0071] The low-span template 4 is arranged on the supporting bracket 2 .

[0072] It should be supplemented that there is a horizontal height difference between the high-span template 3 and the low-span template 4;

[0073] The blocking member 8 is L-shaped and has the same height as the bearing steel 7 to block the gap between the high-span formwork 3 and the low-span formwork 4 .

[0074] A complete chamber is formed between the high-span formwork 3, the low-span formwork 4 and the side formwork 5 through the sealing member 8 to accommodate concrete, thereby forming a cantilevered floor.

[0075] In the present application, one end of the low-span template 4 extends 250 mm outside the load-bearing bracket 2, and the thickness of the low-span template 4 is 180 mm.

[0076] It should be noted that the reinforcing rib 6 is provided with a fixing member, and the fixing member is a fixing bolt;

[0077] The fixing member is used to fix the third reinforcing rib 63 and the low span template 4 on the supporting bracket 2 .

[0078] Through the above-mentioned structural setting, when the above-mentioned structure is in use, the position of the side mold 5 can be adjusted by loosening the fixing piece and pulling the third reinforcing rib 63 to perform deviation adjustment. After the adjustment is completed, the side mold 5 and the third reinforcing rib 63 are locked by the fixing piece. Specifically, the fixing piece is a fixing bolt, and a threaded groove is provided on the low-span mold plate 4 to correspond to the fixing bolt, so as to flexibly adjust the position of the side mold 5.

[0079] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0080] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0081] In addition, "plurality" means two or more.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for constructing an arc-shaped plate edge, characterized in that: include: Cantilevered floor slabs and supporting structures; The support structure comprises a main structure support steel (01) and a bearing bracket (2) welded to the main structure support steel (01); a high span formwork (3) and a low span formwork (4) are arranged on the bearing bracket (2); a blocking piece (8) is arranged between the high span formwork (3) and the low span formwork (4); a reinforcing rib (6) is arranged on the bearing bracket (2); and a side formwork (5) is arranged at one end of the bearing bracket (2) away from the main structure support steel (01); The reinforcing rib (6) comprises a first reinforcing rib (61), a second reinforcing rib (62) and a third reinforcing rib (63); The construction method comprises the following steps: S1, the load-bearing bracket (2) is welded to the main structure support steel (01), and is constructed on the building body simultaneously with the main structure support steel (01); S2, laying the high-span formwork (3) and the low-span formwork (4) on the bearing bracket (2), trimming the high-span formwork (3) according to the dividing line between the high-span formwork (3) and the low-span formwork (4), and trimming the low-span formwork (4) according to the arc line of the floor edge; S3, a blocking member (8) is provided between the high-span formwork (3) and the low-span formwork (4), and a side formwork (5) is provided along the arc line of the edge of the floor slab on the low-span formwork (4); S4, reinforcing ribs (6) are arranged in the high-span formwork (3), the low-span formwork (4) and the side formwork (5), the third reinforcing rib (63) is movably arranged between the first reinforcing rib (61) and the second reinforcing rib (62), and the third reinforcing rib (63) is fixedly connected to the side formwork (5); S5, pouring concrete in the cavity formed by the high-span formwork (3), the low-span formwork (4) and the side formwork (5), and leaving it stationary until the pouring strength of the concrete floor slab meets the design requirements.

2. A method for constructing an arc-shaped plate edge according to claim 1, characterized in that: During the construction process of the main structure support steel (01) welded with the bearing bracket (2) in step S1, the height of each main structure support steel (01) is calibrated with the bearing bracket (2) as a reference, so that each bearing bracket (2) is on the same horizontal plane.

3. A method for constructing an arc-shaped plate edge according to claim 1, characterized in that: Before pouring concrete in step S5, the positions of the third reinforcing ribs (63) and the side formwork (5) are adjusted to adjust the deviation so that the arc shape of the edge of the cantilevered floor slab meets the design requirements.

4. A method for constructing an arc-shaped plate edge according to claim 1, characterized in that: A reinforcing steel (21) is provided at one end of the load-bearing bracket (2) away from the main structure supporting steel (01).

5. The method for constructing a curved plate edge according to claim 1, characterized in that: The load-bearing bracket (2) is provided with load-bearing steel (7) for accommodating the high-span formwork (3); The load-bearing steel (7) is L-shaped; The bearing steel (7) is welded to the bearing bracket (2) to support the high-span formwork (3); The low-span template (4) is arranged on the bearing bracket (2).

6. A method for constructing an arc-shaped plate edge according to claim 5, characterized in that: There is a horizontal height difference between the high-span template (3) and the low-span template (4); The blocking member (8) is L-shaped and has the same height as the bearing steel (7) so as to block the gap between the high-span formwork (3) and the low-span formwork (4).

7. A method for constructing a curved plate edge according to claim 1, characterized in that: One end of the low-span template (4) extends 250 mm outside the bearing bracket (2), and the thickness of the low-span template (4) is 180 mm.

8. The method for constructing a curved plate edge according to claim 1, characterized in that: The thickness of the side mold (5) is 2 mm; The side mold (5) has an L-shaped cross section, and the bottom length of the side mold (5) is 50 mm; The side of the side formwork (5) away from the main structure support steel (01) is arc-shaped, so as to fit with the arc-shaped side of the low-span formwork (4).

9. A method for constructing an arc-shaped plate edge according to claim 6, characterized in that: The reinforcing rib (6) is provided with a fixing piece, and the fixing piece is a fixing bolt; The fixing member is used to fix the third reinforcing rib (63) and the low span template (4) on the bearing bracket (2).

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