A formwork structure for cast-in-place construction of a transfer beam
By using supporting steel bars and diagonal bracing structures, combined with steel pipe support frames and limiting plates, the problems of unstable steel pipe support and cumbersome disassembly and assembly during the pouring of transfer floor beams in high-rise buildings were solved, achieving a stable and reliable support effect and convenient disassembly and assembly.
Patent Information
- Application Number
- CN202521784455.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-21
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-21
AI Technical Summary
During the pouring of beams in the transfer floor of a high-rise building, the insufficient number of existing support frame steel pipes leads to unstable support, while an excessive number of steel pipes makes disassembly and assembly cumbersome, and the floor slab cannot withstand large load pressure, affecting construction efficiency.
The structure employs supporting steel bars and diagonal braces. The load is transferred to the columns through the supporting steel bars, and auxiliary support is provided by steel pipe support frames and diagonal braces, which reduces the amount of steel pipe used and enhances stability. The diagonal braces are fixed by anchors and connecting plates, and the stability of the timber is improved by combining limiting plates and stabilizing plates.
It achieves stability and ease of assembly/disassembly of the support structure under high load conditions, reduces the demand for steel pipes, and improves the stability and efficiency of construction.
Smart Images
Figure CN224679117U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of formwork technology for transfer beam casting, and specifically relates to a formwork structure for transfer beam casting construction. Background Technology
[0002] In high-rise buildings, the upper and lower floors may have different floor plans and functions, resulting in different building structures. In such cases, a transfer floor is typically used to facilitate structural transitions.
[0003] Because the transfer floor structure needs to withstand large loads, the cross-sectional dimensions of its structural components such as beams and columns are also large. During the casting process, the average line load is usually much greater than 20 kN / m. Currently, the main approach is to cast the beams and columns in batches, and then the columns and support frames jointly support the load of the large-section beams of the transfer floor. However, because the load distribution of the large-section beams of the transfer floor is relatively concentrated during casting (due to the large casting length of the beams, more concrete is concentrated in the middle part that is not in contact with the columns, i.e., where the support frame is supported), the support frame needs to play a major supporting role. If there are too few steel pipes in the support frame, it will not provide a stable support effect, while too many steel pipes will make the disassembly and assembly of the support frame too cumbersome, which is not conducive to construction and use. In addition, the bottom of the support frame needs to be supported as a whole on the floor slab. When the beams are cast, the floor slab needs to bear a large pressure load, and the floor slab is difficult to provide stable and reliable support during the casting of the beams. Utility Model Content
[0004] The present invention aims to provide a formwork structure for the construction of a transfer beam, which can provide stable support for the beam casting and reduce the amount of steel pipe used.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a formwork support structure for the casting of a transfer beam, installed on a column, comprising... Supporting steel bars are installed at their ends on columns, and multiple wooden beams are installed on the supporting steel bars; The support assembly includes a steel pipe support frame and diagonal braces. The steel pipe support frame is installed at the bottom of the support steel bars, one end of the diagonal brace is installed at the lower end of the column, and the other end of the diagonal brace is installed at the bottom of the support steel bars.
[0006] The principle and effects of this technical solution: 1. By setting up supporting steel bars, the load of the bottom formwork on the timber can be transferred to the supporting steel bars through the timber. The supporting steel bars are installed on the columns at both ends to transfer the cast load to the columns, thereby reducing the number of steel pipes required for bottom support.
[0007] 2. By setting up diagonal braces and steel pipe support frames, the diagonal braces can further support the middle of the supporting steel bars and apply the supporting force to the columns, thus playing an auxiliary support role and enhancing the support reliability of the supporting steel bars. At the same time, the steel pipe support frames also play an auxiliary support role and increase the stress points at the middle of the supporting steel bars that are not in contact with the columns, thereby making the supporting steel bars less prone to bending deformation under load. Since the supporting steel bars bear most of the load, the number of steel pipes required in the steel pipe support frame and the density of the steel pipe installation are reduced, making the steel pipe support frame easier to assemble and disassemble.
[0008] The present invention is further configured to include: a tie anchor embedded at the lower end of the column, the end of the tie anchor extending to the outside of the column and having a pad installed thereon, the pad abutting against the outer wall of the column, one end of the diagonal brace being fixed to the pad, and the other end of the diagonal brace being fixed with a connecting plate, the connecting plate being installed on the bottom surface of the supporting steel bar.
[0009] The principle and effect of this technical solution: By pre-embedding anchors inside the column, the installation of the pad plate will not damage the surface of the column. The diagonal brace is fixed to the pad plate, so that the force of the diagonal brace is transferred to the pad plate without damaging the outer surface of the column. Furthermore, the diagonal brace can be fixed to the bottom surface of the supporting steel bar through the setting of the connecting plate.
[0010] This utility model is further configured to include a bottom template and a limiting plate. Multiple connecting rods are fixed on the bottom surface of the bottom template, and multiple pads are installed on the supporting steel bars. The pads have grooves and abut against the bottom surface of the bottom template. A limiting groove is provided on the limiting plate. The connecting rods pass through the grooves and the limiting grooves in sequence. The bottom surface of the limiting plate abuts against a limiting nut. The limiting nut and the connecting rod are threaded together. The limiting plate abuts against the bottom surface of the pads and the wooden beam. The bottom edge of the connecting rod is higher than the bottom edge of the supporting steel bars.
[0011] The principle and effect of this technical solution: By setting a connecting rod on the bottom surface of the bottom template, and the connecting rod passing through the sliding groove of the pad and the limiting groove of the limiting plate, the position of the connecting rod can position the pad. Furthermore, by the abutting of the limiting nut with the bottom surface of the limiting plate, the top surface of the limiting plate can abut against the bottom surface of the pad and the bottom surface of the timber, thus clamping the pad and timber between the bottom template and the supporting steel strip. This makes it less likely for the timber to tip over or shift before or during pouring, thus improving the stability of the timber formwork.
[0012] The present invention is further configured as follows: it also includes a stabilizing plate, a stabilizing groove is provided on the stabilizing plate, a stabilizing rod is inserted in the stabilizing groove, the number of connecting rods is less than the number of sliding grooves, one end of the stabilizing rod passes through the sliding groove that does not cooperate with the connecting rod and is fixed to the bottom surface of the bottom template, and the other end of the stabilizing rod is threaded with a stabilizing nut, the stabilizing nut abuts against the bottom surface of the stabilizing plate, and the stabilizing plate abuts against the bottom surface of the supporting steel bar.
[0013] The principle and effect of this technical solution: Since the stabilizing rod is connected to the bottom formwork and the stabilizing plate abuts against the bottom surface of the supporting steel bar, and then the stabilizing nut is rotated to tighten against the bottom surface of the stabilizing plate, the upward pressure applied by the stabilizing nut to the stabilizing plate will cause the stabilizing plate to apply a vertical downward pressure to the stabilizing nut. This downward pressure will cause the stabilizing rod to move vertically downward. That is, the bottom formwork is subjected to a vertical downward pressure before pouring, which can stably press against the pad block and the timber, making it difficult for the pad block and timber to tip over. At the same time, the bottom formwork itself is not easy to be misaligned or displaced due to the increased friction. In addition, the bottom formwork cannot move up and down relative to the supporting steel bar, which enhances the stability of the bottom formwork during installation.
[0014] The present invention is further configured such that: at least two sets of stabilizing plates, stabilizing rods and stabilizing nuts are provided together and are arranged at intervals along the length of the supporting steel bars.
[0015] The principle and effect of this technical solution: By setting up two sets, there are more points of force application, making the stabilizing effect brought by the stabilizing plate, stabilizing rod and stabilizing nut more stable, that is, the bottom template is subjected to more balanced force.
[0016] The present invention is further configured such that: multiple supporting steel bars are spaced apart, and angle steel is fixed between two adjacent supporting steel bars.
[0017] The principle and effect of this technical solution: By setting multiple supporting steel bars, the required strength of the supporting steel bars is reduced, thus lowering the strength requirements of the supporting steel bars. At the same time, by connecting the supporting steel bars with angle steel, multiple supporting steel bars form a whole, which has a stronger load-bearing capacity.
[0018] The present invention is further configured such that the distance between two adjacent wooden beams is less than or equal to 250 centimeters.
[0019] The principle and effect of this technical solution: By limiting the spacing between the timbers, the number of timbers can be controlled, so that the load of the bottom formwork can be more evenly distributed to the timbers, thus avoiding the situation where the local load is too large due to the small number of timbers. Attached Figure Description
[0020] Figure 1 This is a front view of Embodiment 1 of the present utility model; Figure 2 for Figure 1 Axonometric structural diagram (steel pipe support frame omitted); Figure 3 for Figure 1 Enlarged structural diagram of the central anchor point; Figure 4 This is an isometric structural diagram of the supporting steel bar in Embodiment 2 of this utility model; Figure 5 for Figure 4 Structural diagram of the central stabilizing plate; Figure 6 for Figure 4 Structural diagram of the middle limit plate. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: The reference numerals in the accompanying drawings include: 110. Columns; 210. Supporting steel bars; 220. Timber; 230. Bottom formwork; 310. Steel pipe support frame; 320. Diagonal brace; 330. Anchor; 340. Pad; 350. Connecting plate; 410. Limiting plate; 411. Limiting groove; 420. Connecting rod; 430. Pad; 431. Slide groove; 440. Limiting nut; 510. Stabilizing plate; 511. Stabilizing groove; 520. Stabilizing rod; 530. Stabilizing nut; Example 1: As attached Figure 1-3 As shown, this utility model discloses a formwork structure for the casting of a transfer beam, which is installed on the column 110 and includes supporting steel bars 210 and supporting components. Multiple supporting steel bars 210 are spaced apart, and both ends of each supporting steel bar 210 are respectively installed on two columns 110. The overlapping length of the supporting steel bars 210 and the columns 110 is at least 200 mm. Angle steel is fixed between adjacent supporting steel bars 210. Multiple wooden beams 220 are spaced apart on the supporting steel bars 210, and the distance between adjacent wooden beams 220 does not exceed 250 cm. The bottom formwork 230 used to support the pouring of the transfer beam includes a steel pipe support frame 310 and a diagonal brace 320. The steel pipe support frame 310 is installed at the bottom of the supporting steel bar 210. An anchor 330 is embedded at the lower end of the column 110 (embedded during the pouring of the column 110). The end of the anchor 330 extends to the outside of the column 110 and is fitted with a pad 340. The pad 340 abuts against the outer wall of the column 110. One end of the diagonal brace 320 is fixed to the pad 340, and the other end of the diagonal brace 320 is fixed with a connecting plate 350. The connecting plate 350 is installed on the bottom surface of the supporting steel bar 210.
[0022] In this design, the diagonal brace 320 is welded to the connecting plate 350, and the diagonal brace 320 is welded to the pad plate 340. The pad plate 340 is welded to the anchor 330. In this design, the angle steel can be replaced with a 10mm thick steel plate to connect two adjacent support steel bars 210. Before the initial setting of the concrete, approximately 30 φ16 steel bars (30 per square meter) are obliquely inserted into the surface of the construction joint (as shown by the wavy line in the figure) to enhance the shear resistance of the section at the construction joint after the beam and slab concrete is poured. After construction, since the support steel bars 210 are installed inside the column, they are cut flush with the outer surface of the column 110 during the disassembly and assembly of the formwork to remove them. The exposed parts of the support steel bars 210 embedded in the column are then covered and concealed through subsequent repairs. The support steel bars 210 can be I-beams or H-shaped steel bars.
[0023] Due to the setting of the supporting steel bars 210, the steel pipe support frame 310 can be set with a vertical pole spacing of 1.5m and a horizontal pole step distance of 1.8m. The steel pipe can be Q235-A grade steel with φ48×3.6m.
[0024] This scheme is applicable to formwork support systems for high-section, large-span transfer beams (section height ≥ 1m, width ≥ 0.8m, beam span ≥ 6m) where concrete construction loads are large, construction using conventional scaffolding support systems is difficult, or steel pipe scaffolding is used extensively.
[0025] Example 2: The difference from Embodiment 1 is that this solution also includes a bottom template 230, a limiting plate 410, and a stabilizing plate 510. Multiple connecting rods 420 are fixed on the bottom surface of the bottom template 230. Multiple pads 430 are installed on the supporting steel strip 210. The pads 430 have grooves 431 and abut against the bottom surface of the bottom template 230. The limiting plate 410 has a limiting groove 411. The connecting rods 420 pass through the grooves 431 and the limiting grooves 411 in sequence. The bottom surface of the limiting plate 410 abuts against a limiting nut 440. The limiting nut 440 and the connecting rod 420 are threaded together. The limiting plate 410 abuts against the bottom surface of the pads 430 and the wooden strip 220. The bottom edge of the connecting rod 420 is higher than the bottom edge of the supporting steel strip 210. The stabilizing plate 510 has a stabilizing groove 511, and a stabilizing rod 520 passes through the stabilizing groove 511. The number of connecting rods 420 is less than the number of sliding grooves 431. One end of the stabilizing rod 520 passes through the sliding groove 431 that does not cooperate with the connecting rod 420 and is fixed to the bottom surface of the bottom template 230. The other end of the stabilizing rod 520 is threaded with a stabilizing nut 530, which abuts against the bottom surface of the stabilizing plate 510. The stabilizing plate 510 abuts against the bottom surface of the supporting steel bar 210. The stabilizing plate 510, the stabilizing rod 520, and the stabilizing nut 530 are arranged in at least two sets and are spaced apart along the length of the supporting steel bar 210.
[0026] Specifically, taking an example with four stabilizing rods 520, four pads 430, two limiting plates 410, and four connecting rods 420, the four pads 430 are respectively located on both sides of the top surface of the supporting steel bar 210, and each pad 430 has two sliding grooves 431. Connecting rods 420 are inserted into the four sliding grooves 431 of two pads 430, and stabilizing rods 520 are inserted into the four sliding grooves 431 of the other two pads 430. The limiting plates 410 are arranged along the supporting steel bar... 210 is set along its length and is located between the gaps of two supporting steel bars 210. The connecting rod 420 passes through the limiting groove 411 of the limiting plate 410 and is threaded with a limiting nut 440. One limiting plate 410 corresponds to multiple connecting rods 420. The bottom of the same limiting plate 410 abuts against at least two limiting nuts 440. Two stabilizing rods 520 corresponding to the same pad 430 are inserted into the two stabilizing grooves 511 of a stabilizing plate 510, and each stabilizing rod 520 is provided with a stabilizing nut 530.
[0027] After the steel pipe support frame 310, support steel bars 210, and diagonal braces 320 are installed, connecting rods 420 and stabilizing rods 520 are welded to the bottom surface of the bottom formwork 230. During this process, the bottom surface of the bottom formwork 230 faces upward. Timber 220 and pads 430 are placed on the bottom surface of the bottom formwork 230 beforehand, and the timber 220 and pads 430 are restrained and positioned by limiting plates 410 and limiting nuts 440. Then, the bottom formwork 230 is hoisted over and placed on the support steel bars 210. The stabilizing plate 510 is then installed, thus connecting the bottom formwork 230 and the support steel bars 210 into a single unit. This construction method makes the installation of timber and pads more convenient and faster, provides greater stability, and reduces the risk of misalignment.
[0028] The parts of the device not involved are the same as or can be implemented using existing technologies.
[0029] Among them, insert and sliding insert are mating bodies with holes, the cross section of the shaft or rod matches the hole, and the shaft or rod can slide relative to the hole. Threaded insert is a hole with threads, the shaft or rod is threaded, and the shaft or rod is connected to the mating body by screwing. Detachable installation can be by bolt thread connection or bolt and nut connection, etc., depending on what can be actually achieved.
[0030] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A formwork structure for casting a transfer beam, installed on a column, characterized in that: include A supporting steel bar is attached to the column at its end, and multiple wooden beams are mounted on the supporting steel bar; The support assembly includes a steel pipe support frame and diagonal braces. The steel pipe support frame is installed at the bottom of the support steel bar, one end of the diagonal brace is installed at the lower end of the column, and the other end of the diagonal brace is installed at the bottom of the support steel bar.
2. The formwork structure for casting a transfer beam as described in claim 1, characterized in that: It also includes a tie anchor embedded at the lower end of the column, the end of the tie anchor extending to the outside of the column and having a pad installed thereon, the pad abutting against the outer wall of the column, one end of the diagonal brace being fixed to the pad, and the other end of the diagonal brace being fixed to a connecting plate, the connecting plate being installed on the bottom surface of the support steel bar.
3. The formwork structure for casting a transfer beam as described in claim 1, characterized in that: It also includes a bottom template and a limiting plate. Multiple connecting rods are fixed to the bottom surface of the bottom template. Multiple pads are installed on the supporting steel bars. The pads have sliding grooves and abut against the bottom surface of the bottom template. The limiting plate has a limiting groove. The connecting rods pass through the sliding grooves and the limiting grooves in sequence. The bottom surface of the limiting plate abuts against a limiting nut. The limiting nut is threaded onto the connecting rod. The limiting plate abuts against the pads and the bottom surface of the timber. The bottom edge of the connecting rod is higher than the bottom edge of the supporting steel bars.
4. The formwork structure for casting a transfer beam as described in claim 3, characterized in that: It also includes a stabilizing plate with a stabilizing groove. A stabilizing rod passes through the stabilizing groove. The number of connecting rods is less than the number of sliding grooves. One end of the stabilizing rod passes through the sliding groove that does not cooperate with the connecting rod and is fixed to the bottom surface of the bottom template. The other end of the stabilizing rod is threaded with a stabilizing nut. The stabilizing nut abuts against the bottom surface of the stabilizing plate. The stabilizing plate abuts against the bottom surface of the supporting steel bar.
5. The formwork structure for casting a transfer beam as described in claim 4, characterized in that: The stabilizing plate, the stabilizing rod, and the stabilizing nut are provided in at least two sets and are arranged at intervals along the length of the supporting steel bar.
6. The formwork structure for casting a transfer beam as described in claim 4, characterized in that: The supporting steel bars are spaced apart in multiples, and angle steel is fixed between adjacent supporting steel bars.
7. The formwork structure for casting a transfer beam as described in claim 1, characterized in that: The distance between two adjacent timbers is less than or equal to 250 centimeters.