A beam bottom three keel support system structure

Abstract

This utility model provides a three-rib support system for beam bottom, comprising, from top to bottom, secondary ribs, main ribs, and transfer ribs arranged below the concrete beam bottom formwork. The secondary ribs abut against the bottom surface of the concrete beam bottom formwork, extending along the length of the concrete beam. Several secondary ribs are spaced apart along the width of the concrete beam. The main ribs are erected vertically below the secondary ribs and abut against their bottom ends. Several main ribs are also spaced apart along the length of the concrete beam. The transfer ribs are erected vertically below the main ribs and abut against their bottom ends. The transfer ribs are erected on a support frame and fixed by the support frame. This utility model can improve the load-bearing capacity of the beam bottom frame, reduce the deflection deformation of the secondary ribs in the case of large-section concrete beams, improve construction efficiency, simplify the assembly and disassembly process, reduce on-site material usage, and achieve the goal of cost reduction and efficiency improvement.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a three-rib support system structure for beam bottom. Background Technology

[0002] In large-span reinforced concrete frame structures and frame-shear wall structures, disc-lock scaffolding is typically used to meet load-bearing requirements. Because many large-span reinforced concrete frame structures have large frame beam sections, calculations show that the spacing between the uprights of the scaffolding under the beams is often very small to meet safety requirements, thus limiting the spacing of the uprights of the disc-lock scaffolding under the surrounding slabs. This results in a very large amount of reusable materials such as disc-lock scaffolding being used during actual construction, leading to persistently high costs for this measure. The large amount of scaffolding materials also slows down the construction progress and delays the project schedule. Utility Model Content

[0003] In view of the above-mentioned problems in the prior art, this utility model provides a three-rib support system structure for the bottom of a beam to solve the technical problems of the large amount of turnover materials such as disc buckles, high cost and slow progress in the prior art.

[0004] This utility model embodiment provides a three-rib support system structure for a beam bottom, comprising: a secondary rib, a main rib, and a transfer layer rib arranged sequentially from top to bottom below the concrete beam bottom formwork. The secondary rib abuts against the bottom surface of the concrete beam bottom formwork, extending along the length of the concrete beam, and several secondary ribs are spaced apart along the width of the concrete beam. The main rib is erected vertically below the secondary rib and abuts against the bottom end of the secondary rib, and several main ribs are spaced apart along the length of the concrete beam. The transfer layer rib is erected vertically below the main rib and abuts against the bottom end of the main rib, and is erected on a support frame and fixed by the support frame.

[0005] In one embodiment, the support frame adopts a disc-lock scaffolding support system, with its disc-lock uprights arranged at a certain longitudinal and transverse spacing on both sides of the concrete beam. The transition layer keel is supported and fixed by adjustable supports, which are erected on the supporting beams. The supporting beams are erected along the width direction of the concrete beam, and their two ends are correspondingly erected on the connecting discs of the disc-lock uprights on both sides of the concrete beam.

[0006] In one embodiment, the supporting beam includes two I-beams arranged in pairs, with bolt holes correspondingly opened on the webs of the two I-beams, and the two I-beams are connected and fixed by high-strength bolts passing through the bolt holes in their webs.

[0007] In one embodiment, the adjustable support is erected on the supporting beam via a reverse-locking base. The reverse-locking base is U-shaped and fastens to the two I-beams. The inner side of its flange abuts against the outer edge of the flange of the I-beam. A through hole is opened in the middle of its web. The threaded rod of the adjustable support passes through the through hole in the middle of the web of the reverse-locking base and is fixed to the reverse-locking base by an adjusting nut screwed on its rod.

[0008] In one embodiment, the conversion layer keel is provided with at least two layers.

[0009] In one embodiment, the transition layer keel is made of channel steel.

[0010] In one embodiment, the secondary joists at the bottom of the beam are made of square steel pipes, and the main joists at the bottom of the beam are made of round steel pipes.

[0011] Compared with the prior art, the beneficial effects of the three-rib support system for beam bottom provided by this utility model embodiment are as follows: This utility model embodiment can significantly improve the bearing capacity of the beam bottom frame, reduce the deflection deformation of the secondary ribs at the bottom of the beam in the case of large cross-section concrete beams, improve construction efficiency, simplify the erection and dismantling process, reduce the amount of materials used on site, reduce the number of I-beams for scaffolding erection and dismantling by workers, and shorten the construction period; moreover, it can provide a more stable, stronger bearing capacity and clearly defined force support system, effectively disperse concentrated loads in the node area, minimize the risk of frame instability, ensure construction safety and structural quality, and achieve a better overall project cost by reducing material usage, saving labor, shortening the construction period and reducing potential losses caused by safety risks. Attached Figure Description

[0012] Figure 1 A structural schematic diagram of a three-ribbed beam support system provided in this embodiment of the present invention, viewed from one perspective; Figure 2 A structural schematic diagram of a three-ribbed beam support system provided in this embodiment of the present invention from another perspective; Figure 3 A cross-sectional structural diagram of a three-ribbed beam support system provided for an embodiment of this utility model; Figure 4 A schematic diagram of the structure of the supporting beam involved in the construction of a three-ribbed beam bottom support system provided in this embodiment of the utility model; Figure 5 This is a structural schematic diagram of Comparative Example 1 provided by this utility model; Figure 6 This is a structural schematic diagram of Comparative Example 2 provided by this utility model.

[0013] Figure label: 1. Adjustable base; 2. Disc buckle upright; 3. Disc buckle crossbar; 4. Support beam; 401. I-beam; 402. High-strength bolt; 5. Reverse buckle base; 6. Adjustable support; 7. Transfer layer joists; 8. Main joists at the bottom of the beam; 9. Secondary joists at the bottom of the beam; 10. Concrete beam. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0016] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0017] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0018] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0019] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0020] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0021] The principles and features of this utility model are described below with reference to the accompanying drawings. The embodiments described are only for explaining this utility model and are not intended to limit the scope of this utility model. The following description, in conjunction with... Figure 1-6 The preferred embodiments of this utility model will be described in further detail below: like Figure 1-3As shown, this utility model embodiment provides a three-rib support system structure for the bottom of a beam, including: a secondary rib 9, a main rib 8, and a transfer layer rib 7 arranged sequentially from top to bottom below the bottom formwork of a concrete beam 10. The secondary rib 9 abuts against the bottom end face of the bottom formwork of the concrete beam 10, and its length direction extends along the length direction of the concrete beam 10. Several secondary ribs 9 are spaced apart along the width direction of the concrete beam 10. The main rib 8 is erected vertically below the secondary rib 9 and abuts against the bottom end of the secondary rib 9. Several main ribs 8 are spaced apart along the length direction of the concrete beam 10. The transfer layer rib 7 is erected vertically below the main rib 8 and abuts against the bottom end of the secondary rib 9. The bottom ends of the main keel 8 abut against each other, and the transition layer keel 7 is erected on the support frame and fixed by the support frame. By adding an additional support beam as the transition layer keel 7 between the supporting beam 4 and the main keel 8, the bottom support system of the beam becomes a three-keel load-bearing system. By adding the transition layer keel 7, the calculated span of the secondary keel 9 at the bottom of the beam is shortened, the overall bending resistance is improved, and the deflection deformation of the secondary keel 9 at the bottom of the beam is reduced. Without reducing the step distance and longitudinal and transverse distance of the disc buckle uprights 2, the stress of the frame is more reasonable, the load-bearing capacity of the frame is improved, and the amount of turnover materials is saved. The goal of improving safety, reducing costs and saving construction time is achieved.

[0022] In one embodiment, the support frame adopts a disc-lock scaffolding support system, with its disc-lock uprights 2 arranged at certain longitudinal and transverse intervals on both sides of the concrete beam 10. The transition layer keel 7 is supported and fixed by adjustable supports 6, which are erected on the support beam 4. The support beam 4 is erected along the width direction of the concrete beam 10, and its two ends are correspondingly erected on the connecting plates of the disc-lock uprights 2 on both sides of the concrete beam 10. By setting the support beam 4, compared with the form of erecting disc-lock uprights 2 at the bottom of the beam, the amount of disc-lock uprights 2 used can be further reduced.

[0023] like Figure 4 As shown, in one embodiment, the supporting beam 4 includes two pairs of I-beams 401. Bolt holes are correspondingly provided on the webs of the two I-beams 401, and the two I-beams 401 are connected and fixed by high-strength bolts 402 passing through the bolt holes on their webs. The two I-beams 401 connected by the high-strength bolts 402 can be adapted to adjustable supports 6 of different diameters. Moreover, this detachable fixed connection can simplify the installation difficulty of the supporting beam 4.

[0024] In one embodiment, the adjustable support 6 is erected on the supporting beam 4 via a reverse-locking base 5. The reverse-locking base 5 is U-shaped and fastens to the two I-beams 401. The inner side of its flange abuts against the outer edge of the flange of the I-beam 401, and a through hole is opened in the middle of its web. The threaded rod of the adjustable support 6 passes through the through hole in the middle of the web of the reverse-locking base 5 and is fixed to the reverse-locking base 5 by an adjusting nut screwed onto its rod. The setting of the reverse-locking base 5 can effectively improve the installation stability of the adjustable support 6 and ensure that the adjustable support 6 can be adjusted to its setting elevation by the nut, thereby ensuring the accuracy of the beam bottom elevation.

[0025] In one embodiment, at least two transition layer keels 7 are provided, and the at least two transition layer keels 7 are evenly arranged relative to the concrete beam 10 to further improve the stability of the entire system.

[0026] In one embodiment, the transition layer keel 7 is made of channel steel to ensure its structural strength and guarantee stable force transmission.

[0027] In one embodiment, the secondary keel 9 at the bottom of the beam is made of square steel pipe, and the main keel 8 at the bottom of the beam is made of round steel pipe. Example

[0028] like Figure 1-3 As shown, firstly, the adjustable base 1, disc buckle uprights 2, and disc buckle crossbars 3 are erected according to the designed frame layout and longitudinal and transverse spacing; then, the 10# I-beam 401 that forms the supporting crossbeam 4 is placed on the connecting plate at the connection position between the disc buckle uprights 2 and the disc buckle crossbars 3, and high-strength bolts 402 are passed through the reserved holes of the high-strength I-beam 401 to fix it on the connecting plate at the connection position between the disc buckle uprights 2 and the disc buckle crossbars 3; then, the reverse buckle base 5 is placed on the supporting crossbeam 4; then, the adjustable support 6 is inserted into the reverse buckle base 5, and then the transition layer keel 7 is placed in the adjustable support 6 to support the main keel 8 and the secondary keel 9 at the bottom of the beam, thereby completing the support for the concrete beam 10. By adding an additional supporting beam 4 as a transfer layer keel 7 between the supporting beam 4 and the main keel 8 at the bottom of the beam, the calculated span of the secondary keel 9 at the bottom of the beam is shortened, improving the overall bending resistance and reducing the deflection deformation of the secondary keel 9. Taking a beam section of 500*950mm as an example, using a three-keel support system at the bottom of the beam, with the secondary keel 9 using traditional 40*40*2.5mm square steel pipe, the main keel 8 using 48*3.0mm steel pipe, and the transfer layer keel 7 using 10# channel steel, the maximum spacing of the disc buckle uprights 2 on both sides of the beam (i.e., the spacing of the disc buckle uprights 2 along the beam width direction) is 1.5m, and the maximum spacing along the beam direction at the bottom of the beam is 1.8m. This reduces the overall spacing of the disc buckle uprights 2 in the building, saving on the use of disc buckle materials. Calculations show that the usage can be reduced by 20.3%-40.4% compared to the conventional schemes in Comparative Examples 1 and 2.

[0029] Comparative Example 1 like Figure 5 As shown, a double-channel steel support beam is adopted. The specific technical solution is as follows: First, the frame of the beam perimeter plate bottom is erected using the adjustable base 1, the uprights 2, and the crossbars 3. Then, the double-channel support beam is placed on the connecting plate at the connection position of the uprights 2 and the crossbars 3. Next, the reverse base 5 is fastened to the double-channel steel support beam, and the adjustable support 6 is inserted into the reverse base 5. Then, the main keel 8 steel pipe of the bottom of the concrete beam 10 is placed in the tray of the adjustable support 6 to support the secondary keel 9 wooden beam at the bottom of the beam, so as to complete the erection of the beam bottom support system.

[0030] Comparative Example 2 like Figure 6 As shown, the beam bottom support method is adopted. The specific technical solution is as follows: First, the beam bottom and the surrounding slab bottom frame are erected using the adjustable base 1, the uprights 2, and the crossbars 3. Then, the adjustable support 6 is inserted into the uprights 2. Next, the main keel 8 steel pipe of the concrete beam 10 is placed in the tray of the adjustable support 6 to support the secondary keel 9 wooden beam. Then, the beam bottom uprights 2 and the surrounding slab bottom uprights 2 are connected with steel pipes to complete the erection of the beam bottom support system.

[0031] Compared with the comparative example, this embodiment of the utility model takes a beam cross-section of 500*950mm as an example, and refers to the attached diagram. Figure 4 The beam adopts a double-groove support beam form. The secondary keel 9 at the bottom of the beam is made of traditional 40*40*2.5mm square steel pipe, and the main keel 8 at the bottom of the beam is made of 48*3.0mm steel pipe. When the crossbeam 4 is supported by 10# channel steel, the maximum spacing between the uprights 2 on both sides of the beam is 1.5m, and the maximum spacing along the beam direction at the bottom of the beam is 0.9m.

[0032] Taking a beam with a cross-section of 500*950mm as an example, refer to the attached diagram. Figure 5 The beam adopts a bottom-top design. The secondary keel 9 at the bottom of the beam is made of traditional 40*40*2.5mm square steel pipe, and the main keel 8 at the bottom of the beam is made of 48*3.0mm steel pipe. The maximum spacing between the disc buckle uprights 2 on both sides of the beam is 1.5m, and the maximum spacing along the beam direction at the bottom of the beam is 0.9m.

[0033] Based on four frame units, with an area of ​​340.56㎡, the main beam cross-section is 500mm*950mm, the secondary beam cross-section is 300mm*800mm, the beam span is 8600mm and 3300mm, and the floor height is 6.5m. According to calculations, the material consumption of the disc-lock scaffolding in Comparative Example 1 and Comparative Example 2 is 51.79 tons and 69.21 tons, respectively. However, the material consumption of the three-keel support system involved in this utility model is only 41.28 tons, which is a year-on-year decrease of 20.3% and 40.4%.

[0034] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

Claims

1. A three-rib support system for beam bottom, characterized in that, include: The beam bottom secondary joists (9), beam bottom main joists (8), and transfer layer joists (7) are arranged sequentially from top to bottom below the bottom formwork of the concrete beam (10). The beam bottom secondary joists (9) abut against the bottom end face of the bottom formwork of the concrete beam (10), and their length direction extends along the length direction of the concrete beam (10). Several beam bottom secondary joists (9) are spaced apart along the width direction of the concrete beam (10). The beam bottom main joists (8) are erected vertically below the beam bottom secondary joists (9) and abut against the bottom end of the beam bottom secondary joists (9). Several beam bottom main joists (8) are spaced apart along the length direction of the concrete beam (10). The transfer layer joists (7) are erected vertically below the beam bottom main joists (8) and abut against the bottom end of the beam bottom main joists (8). The transfer layer joists (7) are erected on the support frame and fixed by the support frame.

2. The beam bottom three-rib support system structure according to claim 1, characterized in that: The support frame adopts a disc-lock scaffolding support system. Its disc-lock uprights (2) are set on both sides of the concrete beam (10) at a certain longitudinal and transverse distance. The transition layer keel (7) is supported and fixed by adjustable supports (6). The adjustable supports (6) are erected on the supporting beam (4). The supporting beam (4) is erected along the width direction of the concrete beam (10), and its two ends are erected on the connecting plates of the disc-lock uprights (2) on both sides of the concrete beam (10).

3. The beam bottom three-rib support system structure according to claim 2, characterized in that: The supporting beam (4) includes two I-beams (401) arranged in pairs. Bolt holes are provided on the web of the two I-beams (401), and the two I-beams (401) are connected and fixed by high-strength bolts (402) passing through the bolt holes on their webs.

4. The beam bottom three-rib support system structure according to claim 3, characterized in that: The adjustable support (6) is erected on the support beam (4) via the reverse base (5). The reverse base (5) is U-shaped and fastened to the two I-beams (401). The inner side of its flange abuts against the outer edge of the flange of the I-beam (401). A through hole is opened in the middle of its web. The threaded rod of the adjustable support (6) passes through the through hole in the middle of the web of the reverse base (5) and is fixed to the reverse base (5) by the adjusting nut screwed on its rod.

5. The beam bottom three-rib support system structure according to claim 1, characterized in that: The conversion layer keel (7) is provided with at least two layers.

6. The beam bottom three-rib support system structure according to claim 1, characterized in that: The transition layer keel (7) is made of channel steel.

7. The beam bottom three-rib support system structure according to claim 1, characterized in that: The secondary keel (9) at the bottom of the beam is made of square steel pipe, and the main keel (8) at the bottom of the beam is made of round steel pipe.

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