A method for installing reinforcing bars in T-beams

Abstract

This invention discloses a method for installing reinforcing bars in T-beams, including: pre-construction preparation steps, reinforcing bar processing steps, and reinforcing bar binding steps. The reinforcing bar binding step includes: Step S1: Installing a positioning device at a designated position on the bottom formwork of the T-beam; the positioning device includes: a base frame, a vertical positioning component, a horizontal positioning component, and a longitudinal positioning component; Step S2: Verifying and adjusting the positions of the vertical, horizontal, and longitudinal positioning components according to construction parameters to adjust the spacing of the reinforcing bars; Step S3: Installing the horizontal, vertical, and longitudinal reinforcing bars onto the horizontal, vertical, and longitudinal positioning components respectively, and binding and fixing them. This invention achieves efficient installation and positioning, and the three-dimensional coordinate deviation of all reinforcing bars is controlled within ±5mm. It also solves the problem of requiring a dedicated person to stabilize the reinforcing bars and repeatedly correct their positions during traditional binding processes, thus improving construction efficiency and quality.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, specifically to a method for installing steel reinforcement in T-beams. Background Technology

[0002] T-beams are commonly used precast components in bridge engineering, and the accuracy of their rebar tying directly affects the structural strength and construction quality of the T-beam. During the precast construction of T-beams, precise positioning and tying of vertical and horizontal rebars are required. Currently, manual marking combined with simple scaffolds is often used for rebar positioning, but this method has several drawbacks: firstly, the accuracy of manual marking is easily affected by human factors, resulting in large deviations in rebar spacing; secondly, the simple scaffolds are mostly welded fixed structures, unable to be flexibly adjusted according to different T-beam sizes; and thirdly, the stability of the scaffolds and the T-beam bottom formwork is poor, making it prone to displacement during tying. Therefore, to ensure that the overall verticality and flatness of the T-beam rebar skeleton meet the standards, the rebars must be repeatedly adjusted and corrected during and after tying, leading to low construction efficiency.

[0003] Therefore, there is an urgent need for a T-beam reinforcement installation method that can improve positioning accuracy and construction efficiency. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a method for installing reinforcing bars in T-beams, which can effectively improve the construction efficiency and quality of reinforcing bar tying in T-beams.

[0005] A method for installing reinforcing bars in a T-beam includes: a pre-construction preparation step, a reinforcing bar processing step, and a reinforcing bar binding step, wherein the reinforcing bar binding step includes:

[0006] Step S1: Install the positioning device at the designated position of the bottom formwork of the T-beam; the positioning device includes: a base frame, a vertical positioning component, a horizontal positioning component, and a longitudinal positioning component;

[0007] Step S2: Verify and adjust the positions of the vertical positioning components, horizontal positioning components, and longitudinal positioning components according to the construction parameters to adjust the rebar spacing;

[0008] Step S3: Install the horizontal, vertical, and longitudinal reinforcing bars onto the horizontal, vertical, and longitudinal positioning components respectively, and then tie and secure them.

[0009] Furthermore, the base frame includes:

[0010] Multiple horizontal base bars are provided.

[0011] Positioning buckles: Multiple positioning buckles are provided at the bottom of each of the horizontal bottom bars;

[0012] A connecting rod is provided on the transverse bottom rod;

[0013] Step S1 includes:

[0014] Step S11: Attach the positioning buckles at the bottom of each horizontal bottom bar to the edge of the T-beam bottom formwork and tighten the buckle bolts so that the ends of the buckle bolts firmly abut against the side of the bottom formwork;

[0015] Step S12: Connect all the horizontal bottom bars into a whole using connecting rods;

[0016] Step S13: Install the vertical positioning component, the horizontal positioning component, and the longitudinal positioning component in sequence.

[0017] Furthermore, the vertical positioning component includes:

[0018] Vertical slide bar;

[0019] A vertical positioning plate with a vertical positioning slot.

[0020] Step S13 includes:

[0021] Step S131: Insert the vertical slide rods one by one into the reserved holes on the connecting rod. After ensuring that the vertical slide rods are vertical, fix the vertical slide rods to the connecting rods with the locking bolts. During installation, ensure that the vertical positioning slots of all vertical slide rods are located in the same vertical plane.

[0022] Furthermore, the lateral positioning component includes:

[0023] A horizontal positioning block is provided on the vertical slide bar, and a horizontal positioning slot is provided thereon;

[0024] Step S13 further includes:

[0025] Step S132: Adjust the position of the horizontal positioning blocks according to the construction parameters. During installation, ensure that the opening direction of the horizontal positioning slots of all horizontal positioning blocks is consistent, and that the horizontal positioning blocks of the same level are on the same horizontal plane.

[0026] Furthermore, the longitudinal positioning component includes:

[0027] A horizontal slide bar is arranged horizontally on the vertical slide bar via a positioning sleeve;

[0028] A longitudinal positioning block is provided on a transverse slide bar, and a longitudinal positioning slot is provided on it.

[0029] Step S13 further includes:

[0030] Step S133: Insert the horizontal slide bar into the positioning sleeve, and adjust the position of the positioning sleeve on the vertical slide bar according to the construction parameters.

[0031] The beneficial effects of this invention are:

[0032] (1) The present invention utilizes the base frame to fix the bottom formwork of the T beam, and then uses the slot-type fixing method to fix and limit the vertical, horizontal and longitudinal steel bars, thereby achieving efficient installation and positioning. Moreover, the deviation of the longitudinal, horizontal and vertical three-dimensional coordinates of all steel bars is controlled within ±5mm, which improves construction efficiency and quality.

[0033] (2) This method rigidly limits all steel bars throughout the binding process, and the steel bars do not deviate during the binding process. This solves the problem that a special person is needed to stabilize the steel bars and repeatedly correct their position during the traditional binding process, which significantly improves the binding efficiency and ensures that the cross points are firmly bound.

[0034] (3) All parts are standardized and modularized, and workers only need to follow the steps to operate, which reduces the dependence on the workers' technical level. Attached Figure Description

[0035] Figure 1 This is a flowchart of the T-beam reinforcement installation method in Example 1;

[0036] Figure 2 This is a schematic diagram of the T-beam reinforcement positioning device in Example 1;

[0037] Figure 3 This is a schematic diagram of the base frame in Example 1;

[0038] Figure 4 This is a schematic diagram of the installation location between the vertical slide bar and the base frame in Example 1;

[0039] Figure 5 This is a schematic diagram of the vertical sliding rod in Example 1;

[0040] Figure 6 This is a schematic diagram of the movement of the lateral positioning block in Example 1;

[0041] Figure 7 This is a schematic diagram showing the connection between the horizontal and vertical slide bars in Example 1;

[0042] Figure 8 This is a schematic diagram of the adjustment of the horizontal steel bar spacing in Example 1;

[0043] Figure 9 This is a schematic diagram of the transverse slide bar in Example 1;

[0044] Figure 10 This is a schematic diagram of the connection points of the vertical, horizontal, and longitudinal reinforcing bars in Example 1;

[0045] Figure 11 This is a rendering of the connection points of the vertical, horizontal, and longitudinal reinforcing bars in Example 1;

[0046] Figure 12 This is a rendering of the T-beam reinforcement positioning device in Example 1.

[0047] Figure label:

[0048] 1-Base frame, 11-Horizontal base rod, 12-Connecting rod, 13-Positioning buckle; 2-Vertical positioning component, 21-Vertical slide rod, 22-Vertical positioning plate, 23-Vertical positioning slot, 24-Locking bolt; 3-Horizontal positioning component, 31-Horizontal positioning block, 32-Horizontal positioning slot; 4-Longitudinal positioning component, 41-Horizontal slide rod, 42-Longitudinal positioning block, 43-Longitudinal positioning slot, 44-Positioning sleeve; 5-T-beam bottom formwork; 61-Vertical reinforcement, 62-Horizontal reinforcement, 63-Longitudinal reinforcement. Detailed Implementation

[0049] The present invention will be further described in detail below through specific embodiments.

[0050] Example 1

[0051] like Figure 2 As shown, this embodiment provides a T-beam rebar positioning device, including: a base frame 1, a vertical positioning component 2, a horizontal positioning component 3, and a longitudinal positioning component 4. The base frame, vertical positioning component 2, horizontal positioning component 3, and longitudinal positioning component 4 are all made of 304 stainless steel and have been galvanized for rust and corrosion prevention to improve their durability. Figure 2 As shown, the base frame 1 is adapted to the external structure of the T-beam bottom mold 5. The base frame 1 includes multiple horizontal base rods 11. The bottom of the horizontal base rods 11 is welded with positioning buckles 13. The positioning buckles 13 are composed of buckles and buckle bolts. The buckles are engaged with the edge of the T-beam bottom mold 5. The bolts are tightened so that the bolt ends are pressed against the T-beam bottom mold 5, thereby fixing the base frame 1 to the T-beam bottom mold 5. A connecting rod 12 is welded above the horizontal base rods 11.

[0052] like Figure 4-6 As shown, the vertical positioning assembly 2 includes: multiple vertical slide rods 21 and a vertical positioning plate 22 disposed on the vertical slide rods 21 and the vertical slide rods 21. The vertical slide rods 21 are inserted into the insertion holes on the connecting rod 12. Threaded holes are provided on the side of the vertical slide rods 21. Locking bolts 24 are inserted into the connecting rod 12 and connected to the threaded holes to fix the vertical slide rods 21 to the horizontal base rod 11. The vertical positioning plate 22 is provided with vertical positioning slots 23, which are used to engage vertical reinforcing bars 61 to fix the vertical reinforcing bars 61.

[0053] The transverse positioning assembly 3 includes multiple transverse positioning blocks 31 mounted on the vertical slide bar 21. The transverse positioning blocks 31 are fastened with bolts, allowing their positions on the vertical slide bar 21 to be adjustable. Each transverse positioning block 31 has a transverse positioning groove 32 for engaging transverse reinforcing bars 62. By adjusting the position of the transverse positioning blocks 31, the spacing of the transverse reinforcing bars 62 can be adjusted.

[0054] like Figure 7-9 As shown, the longitudinal positioning assembly 4 includes: multiple transverse slide rods 41 and longitudinal positioning blocks 42 disposed on the transverse slide rods 41. The transverse slide rods 41 are connected to the vertical slide rods 21 through positioning sleeves 44. The positioning sleeves 44 are bolted to the vertical slide rods 21. The transverse slide rods 41 pass through the positioning sleeves 44 and form a cross with the vertical slide rods 21. Loosening the bolts of the positioning sleeves 44 can adjust the vertical position of the transverse slide rods 41, thereby adjusting the spacing between the transverse reinforcing bars 62 and the longitudinal reinforcing bars 63.

[0055] The longitudinal positioning block 42 is provided with a longitudinal positioning slot 43, which engages with the longitudinal reinforcing bar 83. The longitudinal positioning blocks 42 at both ends of the transverse slide bar 41 are fixed, while the middle longitudinal positioning block 42 is connected by bolts. Loosening the bolts allows the middle longitudinal positioning block 42 to move along the transverse slide bar 41, thereby adjusting the spacing of the longitudinal reinforcing bars 63.

[0056] Anti-slip pads are provided in the vertical positioning slot 23, the horizontal positioning slot 32 and the longitudinal positioning slot 43. The anti-slip pads can increase the friction with the steel bars, further improve the positioning stability and prevent the steel bars from shifting during the binding process. At the same time, the cushioning effect of the anti-slip pads can prevent the positioning slots from directly contacting and hitting the surface of the steel bars, protecting the steel bar structure from damage.

[0057] The specific steps for installing T-beam reinforcement using the aforementioned T-beam reinforcement positioning device are as follows:

[0058] Pre-construction preparation steps:

[0059] Inventory all modular components and clarify the steel reinforcement design parameters such as specifications, quantity, and spacing.

[0060] Steel bar processing steps:

[0061] According to the design parameters, the steel bars are straightened, cut, bent and processed.

[0062] Rebar tying steps:

[0063] Step S1: Install the positioning device at the designated position on the bottom formwork of the T-beam; specifically:

[0064] Step S11: Attach the positioning buckle 13 at the bottom of each horizontal bottom rod 11 to the edge of the T-beam bottom formwork 5, and tighten the buckle bolts so that the ends of the buckle bolts firmly abut against the side of the T-beam bottom formwork 5;

[0065] Step S12: Connect all the transverse base bars 11 into a whole using the connecting rod 12; check the levelness of the transverse base bars with a spirit level, the deviation ≤2mm / m;

[0066] Step S131: Insert the vertical slide rods 21 one by one into the reserved holes on the connecting rod 12, with an insertion depth ≥100mm. After ensuring that the vertical slide rods 21 are vertical, fix the vertical slide rods 21 to the connecting rod 12 with the locking bolts 24. During installation, ensure that the vertical positioning slots of all vertical slide rods are located on the same vertical plane to ensure the accurate position of the vertical slide rods 21.

[0067] Step S132: Adjust the position of the transverse positioning block 31 according to the construction parameters. Use a measuring tape to check the spacing between adjacent transverse positioning blocks 31 point by point. The deviation should be ≤ ±5mm. After passing the test, tighten the fastening bolts of the transverse positioning block 31 to ensure that the opening direction of the transverse positioning slot 32 of all transverse positioning blocks 31 is consistent and that the transverse positioning blocks 31 of the same level are on the same horizontal plane.

[0068] Step S133: Insert the transverse slide bar 41 into the positioning sleeve 44, adjust the position of the positioning sleeve 44 on the vertical slide bar 21 according to the designed transverse steel bar elevation, with a deviation of ≤±3mm, and then tighten the bolts of the positioning sleeve 44.

[0069] Step S2: Measure whether the positions of each horizontal slide bar 41 and vertical slide bar 21 meet the construction parameters, and verify their positions. If the deviation is greater than the design requirements, adjust the positions of the vertical positioning component, horizontal positioning component and longitudinal positioning component.

[0070] Step S3: Install the horizontal reinforcing bars 62, vertical reinforcing bars 61 and longitudinal reinforcing bars 32 onto the horizontal positioning components, vertical positioning components and longitudinal positioning components respectively, and tie all the reinforcing bar intersections using the quincunx binding method.

[0071] Check the overall stability of the reinforcing steel cage, ensuring there is no loosening or deformation. After the reinforcing steel cage is tied and passes inspection, remove the positioning device within 24 hours before concrete pouring. During removal, it is strictly forbidden to pry or knock on the reinforcing steel cage to avoid displacement and deformation of the reinforcing steel.

[0072] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A method for installing reinforcing bars in a T-beam, comprising: The pre-construction preparation steps, rebar processing steps, and rebar tying steps are characterized in that the rebar tying step includes: Step S1: Install the positioning device at the designated position of the bottom formwork of the T-beam; the positioning device includes: a base frame, a vertical positioning component, a horizontal positioning component, and a longitudinal positioning component; Step S2: Verify and adjust the positions of the vertical positioning components, horizontal positioning components, and longitudinal positioning components according to the construction parameters to adjust the rebar spacing; Step S3: Install the horizontal, vertical, and longitudinal reinforcing bars onto the horizontal, vertical, and longitudinal positioning components respectively, and then tie and secure them.

2. The T-beam reinforcement installation construction method as described in claim 1, characterized in that, The base frame includes: Multiple horizontal base bars are provided. Positioning buckles: Multiple positioning buckles are provided at the bottom of each of the horizontal bottom bars; A connecting rod is provided on the transverse bottom rod; Step S1 includes: Step S11: Attach the positioning buckles at the bottom of each horizontal bottom bar to the edge of the T-beam bottom formwork and tighten the buckle bolts so that the ends of the buckle bolts firmly abut against the side of the bottom formwork; Step S12: Connect all the horizontal bottom bars into a whole using connecting rods; Step S13: Install the vertical positioning component, the horizontal positioning component, and the longitudinal positioning component in sequence.

3. The T-beam reinforcement installation method as described in claim 2, characterized in that, The vertical positioning component includes: Vertical slide bar; A vertical positioning plate with a vertical positioning slot. Step S13 includes: Step S131: Insert the vertical slide rods one by one into the reserved holes on the connecting rod. After ensuring that the vertical slide rods are vertical, fix the vertical slide rods to the connecting rods with the locking bolts. During installation, ensure that the vertical positioning slots of all vertical slide rods are located in the same vertical plane.

4. The T-beam reinforcement installation method as described in claim 3, characterized in that, The lateral positioning component includes: A horizontal positioning block is provided on the vertical slide bar, and a horizontal positioning slot is provided thereon; Step S13 further includes: Step S132: Adjust the position of the horizontal positioning blocks according to the construction parameters. During installation, ensure that the opening direction of the horizontal positioning slots of all horizontal positioning blocks is consistent, and that the horizontal positioning blocks of the same level are on the same horizontal plane.

5. The T-beam reinforcement installation method as described in claim 4, characterized in that, The longitudinal positioning component includes: A horizontal slide bar is arranged horizontally on the vertical slide bar via a positioning sleeve; A longitudinal positioning block is provided on a transverse slide bar, and a longitudinal positioning slot is provided on it. Step S13 further includes: Step S133: Insert the horizontal slide bar into the positioning sleeve, and adjust the position of the positioning sleeve on the vertical slide bar according to the construction parameters.

Images