High-ductility concrete construction reinforcement method based on masonry column structure reinforcement

Abstract

The invention relates to the technical field of buildings, and discloses a high-ductility concrete construction reinforcement method based on masonry column structure reinforcement, which comprises the following steps of: sleeving an assembled template on the outer side wall of a steel bar; the outer side wall of the steel bar is sleeved with a sleeve. After the locking assembly is unlocked, the limiting assembly is inserted into the outer side wall of the single steel bar; a positioning assembly on the outer side wall of the sleeve is rotated, the output end of the positioning assembly is attached to the inner side wall of the formwork, and it is guaranteed that the whole steel bar is located in the center of the formwork; and concrete is poured, and formwork removal operation is conducted after the concrete is solidified. During pouring, concrete flows downwards to push the sleeves to move in the same direction, the movement direction is consistent with the positioning direction of the clamping plates, the positioning relation between the clamping plates and the steel bars cannot be damaged, the problem that in traditional construction, pouring impact causes displacement of the steel bars is solved, and a foundation is laid for cooperative stress of high-ductility concrete, the steel bars and a masonry structure; and the bearing capacity and the stability of the reinforced structure are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of building technology, specifically, it relates to a high-ductility concrete construction reinforcement method based on masonry column structure reinforcement. Background Technology

[0002] Masonry structures are widely used in the field of building engineering due to their outstanding advantages such as readily available materials, simple construction, low cost, and excellent thermal insulation performance. Their service life can usually reach decades or even longer, making them one of the indispensable structural forms in urban and rural buildings in my country. However, as service time increases, masonry structures are inevitably affected by a combination of factors, leading to gradual performance degradation. In terms of environmental erosion, humid climates, rainwater erosion, and chemical corrosion can cause weathering of masonry materials and reduction in mortar strength. The salt spray environment in coastal areas can also accelerate steel corrosion, further damaging the overall structural integrity. In terms of load, new loads caused by changes in building use, dynamic loads caused by natural disasters such as earthquakes, and cumulative fatigue loads during long-term use can all lead to stress redistribution within the masonry structure, causing vertical, horizontal, or diagonal cracks in the walls. In addition, construction defects such as insufficient mortar fullness, deviations in steel reinforcement placement, and insecure formwork fixation during the initial construction stage can further accelerate the degradation of structural performance. In severe cases, this can lead to wall instability and collapse, directly threatening the safety of people's lives and property.

[0003] Therefore, reinforcing and repairing old and damaged masonry column structures has become an important engineering challenge for ensuring building structural safety and extending building lifespan. Among various masonry structure reinforcement technologies, high-ductility concrete reinforcement is widely used in masonry structure reinforcement projects due to its core advantages such as high toughness, high crack resistance, high durability, and good compatibility with masonry substrates. The core principle of this technology is to lay a steel mesh on the surface or inside the masonry according to design requirements, and then pour high-ductility concrete to form a three-in-one synergistic force-bearing system of "masonry-steel reinforcement-high-ductility concrete". The excellent tensile properties of the steel reinforcement offset the stress in the tensile areas of the structure, and the good energy dissipation capacity and crack resistance of the high-ductility concrete disperse stress concentration, thereby synergistically improving the overall load-bearing capacity, deformation capacity, and durability of the structure.

[0004] In existing masonry structure reinforcement construction, the positioning of reinforcing bars mostly adopts the traditional method of binding and fixing or simple support components. However, the reinforcing bars are prone to displacement during the pouring process. When the concrete is poured, it flows downward under the action of gravity. The impact force of the flow can easily cause the unfixed reinforcing bars to shift axially or radially, which directly destroys the cooperative stress foundation of masonry-reinforcing bar-concrete and may affect the load-bearing capacity and stability.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0007] A high-ductility concrete construction reinforcement method based on masonry column structure reinforcement includes the following steps:

[0008] Step 1: Fit the assembled template onto the outer wall of the reinforcing steel.

[0009] Step 2: A sleeve is installed on the outer wall of the reinforcing bar;

[0010] Step 3: Move the limiting component on the sleeve side wall to the initial position, and activate the locking component on the sleeve side wall to position the limiting component.

[0011] Step 4: After unlocking the locking component, the limiting component will be inserted into the outer wall of the single rebar to position the single rebar.

[0012] Step 5: Rotate the positioning component on the outer wall of the sleeve. The output end of the positioning component fits against the inner wall of the template. The positioning component is used to position the entire reinforcing bar to ensure that the entire reinforcing bar is located in the center of the template.

[0013] Step Six: Pour concrete and wait for it to solidify before removing the formwork.

[0014] In a preferred embodiment of the present invention, the positioning component includes positioning posts, which are installed on the four sides of the sleeve and are perpendicular to the opposite templates. The positioning posts have threaded holes inside, and an adjusting rod is screwed into the threaded holes. A top block is installed at the end of the adjusting rod. By rotating the adjusting rod, the top block is made to fit against the side wall of the template, and the corresponding position of the sleeve is adjusted.

[0015] In a preferred embodiment of the present invention, a pair of horizontal beams are installed above the template, and mounting plates are installed at both ends of the beams. The mounting plates are in contact with the outer wall of the template, and locking bolts are screwed onto the mounting plates. The ends of the locking bolts are in close contact with the side wall of the template, and one end of the locking component overlaps on the beam for positioning the locking component.

[0016] In a preferred embodiment of the present invention, the locking assembly includes a connecting rod, a collar is rotatably mounted on the side wall of the connecting rod, a smooth rod is mounted on the side wall of the collar, the upper surface of the smooth rod overlaps the side wall of the crossbeam, and a locking block is mounted at the bottom of the connecting rod for locking onto the positioning assembly.

[0017] In a preferred embodiment of the present invention, a compression spring is installed at the bottom of the locking block, and the end of the compression spring is engaged with the sleeve. The compression direction of the compression spring and the moving direction of the locking block are both on the same straight line.

[0018] In a preferred embodiment of the present invention, the positioning component includes a slider, which is slidably disposed at the corner of the sleeve, and a pair of clamps are installed on the slider. The interval between the pair of clamps is adapted to a single steel bar, and the steel bar is provided with ribs. A slot is opened on the side wall of the slider, and the end of the locking block is inserted into the slot.

[0019] In a preferred embodiment of the present invention, a positioning rod is movably mounted on the slider, and positioning seats are mounted at both ends of the positioning rod. A positioning spring is sleeved on the side wall of the positioning rod. One end of the positioning spring is engaged with the positioning seat, and the other end of the positioning spring is engaged with the side wall of the slider. The positioning spring is used to automatically drive the clamping plate to slide towards the side of a single steel bar after the clamping block and the clamping groove are separated.

[0020] In a preferred embodiment of the present invention, a vertical rod is installed on the sleeve, the vertical rod movably passes through the connecting rod and the locking block, a threaded rod is installed on the top of the vertical rod, the diameter of the threaded rod is smaller than the diameter of the vertical rod, and a positioning nut is installed on the threaded rod, the end of the positioning nut being in contact with the end of the connecting rod.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] This invention constructs a dual positioning system of single-rebar positioning and overall centering through the collaborative design of limiting and positioning components. In the limiting component, the clamping plate driven by the positioning spring fits and engages with the reinforcing bar ribs, achieving rigid positioning of a single reinforcing bar and preventing displacement. The positioning component, through the cooperation of positioning posts, adjusting rods, and top blocks on the four sides of the sleeve, can precisely adjust the position of the sleeve and the overall reinforcing bar, ensuring that the reinforcing bar is always in the center area of ​​the formwork. Furthermore, during pouring, the downward flow of concrete pushes the sleeve to move in the same direction as the positioning direction of the clamping plate, which does not disrupt the positioning relationship between the clamping plate and the reinforcing bar. This solves the problem of reinforcing bar displacement caused by pouring impact in traditional construction, laying the foundation for the coordinated stress of high-ductility concrete, reinforcing bars, and masonry structures, and significantly improving the load-bearing capacity and stability of the reinforced structure.

[0023] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0024] In the attached diagram:

[0025] Figure 1 This is an overall structural diagram of the present invention;

[0026] Figure 2 This is a side view of the present invention;

[0027] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a diagram of the internal structure of the present invention;

[0029] Figure 5 This is a partial structural diagram of the present invention;

[0030] Figure 6 For the present invention Figure 5 Enlarged view at point B in the middle;

[0031] Figure 7 This is a connecting rod assembly diagram of the present invention.

[0032] In the diagram: 1. Template; 2. Reinforcing bar; 3. Crossbeam; 4. Mounting plate; 5. Sleeve; 6. Positioning post; 7. Adjusting rod; 8. Top block; 9. Sliding block; 10. Clamping plate; 11. Positioning rod; 12. Positioning seat; 13. Positioning spring; 14. Locking block; 15. Locking groove; 16. Connecting rod; 17. Collar; 18. Plain rod; 19. Upright rod; 20. Threaded rod; 21. Positioning nut; 22. Compression spring; 23. Rib. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0034] like Figures 1 to 7 As shown, a high-ductility concrete construction reinforcement method based on masonry column structure reinforcement includes the following steps:

[0035] Step 1: Fit the assembled template 1 onto the outer wall of the reinforcing bar 2;

[0036] Step 2: A sleeve 5 is installed on the outer wall of the reinforcing bar 2;

[0037] Step 3: Move the limiting component on the side wall of sleeve 5 to the initial position, and activate the locking component on the side wall of sleeve 5 to position the limiting component.

[0038] Step 4: After unlocking the locking component, the limiting component will be inserted into the outer wall of the single rebar 2 to position the single rebar 2.

[0039] Step 5: Rotate the positioning component on the outer wall of sleeve 5. The output end of the positioning component is in contact with the inner wall of template 1. The positioning component is used to position the entire position of the reinforcing bar 2, ensuring that the entire reinforcing bar 2 is located in the center of template 1.

[0040] Step Six: Pour concrete and wait for it to solidify before removing the formwork.

[0041] like Figures 1 to 7 As shown, in a specific embodiment, the positioning component includes positioning posts 6, which are installed on the four sides of the sleeve 5. The positioning posts 6 are perpendicular to the opposing templates 1. Threaded holes are provided inside the positioning posts 6, and adjusting rods 7 are screwed into these holes. A top block 8 is installed at the end of the adjusting rod 7. Rotating the adjusting rod 7 causes the top block 8 to fit against the side wall of the template 1, thus adjusting the corresponding position of the sleeve 5. This positioning component, through the structural cooperation of the positioning posts 6, adjusting rods 7, and top blocks 8, utilizes threaded adjustment to achieve the fitting and positioning of the top block 8 against the template 1. The arrangement of the four sides ensures balanced positioning, allowing for precise adjustment of the sleeve 5's position and thus guaranteeing the overall positioning accuracy of the reinforcing bar 2.

[0042] like Figures 1 to 7 As shown, furthermore, a pair of horizontal beams 3 are installed horizontally above the template 1. Mounting plates 4 are installed at both ends of the beams 3, and the mounting plates 4 are in close contact with the outer wall of the template 1. Locking bolts are screwed onto the mounting plates 4, with the ends of the locking bolts tightly fitted to the side wall of the template 1. One end of the locking component overlaps with the beams 3, used to position the locking component. The beams 3 and mounting plates 4 are securely connected to the template 1 via locking bolts, which not only enhances the overall rigidity of the template 1 but also provides a stable overlapping and positioning base for the locking component, improving the reliability of the locking component's positioning.

[0043] like Figures 1 to 7 As shown, the locking assembly includes a connecting rod 16, a collar 17 rotatably mounted on the side wall of the connecting rod 16, a smooth rod 18 mounted on the side wall of the collar 17, the upper surface of the smooth rod 18 overlapping the side wall of the crossbeam 3, and a locking block 14 mounted on the bottom of the connecting rod 16. The locking block 14 is used to engage with the positioning assembly. This locking assembly, through the structural design of the connecting rod 16, collar 17, smooth rod 18, and locking block 14, achieves initial positioning by utilizing the overlap between the smooth rod 18 and the crossbeam 3, and achieves the positioning and fixation of the limiting assembly by engaging the locking block 14 with the positioning assembly. The structure is simple and the positioning is reliable.

[0044] like Figures 1 to 7As shown, in a specific embodiment, a compression spring 22 is installed at the bottom of the locking block 14. The end of the compression spring 22 is engaged with the sleeve 5, and the compression direction of the compression spring 22 and the moving direction of the locking block 14 are both on the same straight line. The configuration of the compression spring 22 provides continuous elastic pressure to the locking block 14, ensuring that the locking block 14 is tightly engaged with the positioning component, preventing loosening of the positioning, and the fact that the compression direction is consistent with the moving direction of the locking block 14 ensures the effectiveness of the elastic force.

[0045] like Figures 1 to 7 As shown, the positioning component further includes a slider 9, which is slidably disposed at the corner of the sleeve 5. A pair of clamping plates 10 are installed on the slider 9, and the interval between the pair of clamping plates 10 is adapted to the single reinforcing bar 2. The reinforcing bar 2 is provided with ribs 23. A slot 15 is opened on the side wall of the slider 9, and the end of the locking block 14 is inserted into the slot 15. This limiting component, through the cooperation of the slider 9, clamping plates 10, and slot 15, utilizes the adaptation design between the clamping plates 10 and the reinforcing bar 2 to achieve the positioning of a single reinforcing bar 2. The setting of the ribs 23 enhances the fit stability between the clamping plates 10 and the reinforcing bar 2. The insertion and cooperation of the slot 15 and the locking block 14 achieves the initial positioning of the limiting component.

[0046] like Figures 1 to 7 As shown, a positioning rod 11 is movably mounted through the slider 9. Positioning seats 12 are mounted at both ends of the positioning rod 11. A positioning spring 13 is sleeved on the side wall of the positioning rod 11. One end of the positioning spring 13 is engaged with the positioning seat 12, and the other end is engaged with the side wall of the slider 9. The positioning spring 13 is used to automatically drive the clamping plate 10 to slide towards the single rebar 2 after the clamping block 14 and the clamping groove 15 separate. The positioning rod 11 provides a stable sliding guide for the slider 9, and the elastic reset function of the positioning spring 13 enables the clamping plate 10 to automatically conform to the rebar 2 without the need for additional power, thus improving construction efficiency.

[0047] like Figures 1 to 7 As shown, a vertical rod 19 is mounted on the sleeve 5, which movably passes through the connecting rod 16 and the locking block 14. A threaded rod 20 is mounted on the top of the vertical rod 19. The diameter of the threaded rod 20 is smaller than that of the vertical rod 19, and a positioning nut 21 is mounted on the threaded rod 20. The end of the positioning nut 21 is in contact with the end of the connecting rod 16. The vertical rod 19 provides installation support and movement guidance for the connecting rod 16 and the locking block 14. The positioning nut 21, through its cooperation with the threaded rod 20, limits and fixes the connecting rod 16, further improving the stability of the locking assembly and preventing displacement during construction.

[0048] The specific process of a high-ductility concrete construction reinforcement method based on masonry column structure reinforcement of the present invention is as follows: First, carry out preparatory work before construction. After the steel bars 2 are laid out according to the design requirements, the pre-assembled template 1 is fitted onto the outer wall of the steel bars 2, and at the same time, the sleeve 5 is fitted onto the corresponding position on the outer wall of the steel bars 2.

[0049] Next, a pair of horizontal beams 3 are installed horizontally above the template 1. Mounting plates 4 are installed at both ends of the beams 3. After the mounting plates 4 are attached to the outer side wall of the template 1, locking bolts are screwed onto the mounting plates 4 so that the ends of the locking bolts are tightly attached to the side wall of the template 1, thus completing the fixing of the beams 3.

[0050] Subsequently, the limiting assembly on the side wall of sleeve 5 (composed of slider 9, clamping plate 10, positioning rod 11, positioning seat 12, and positioning spring 13) is moved to the initial position. At this time, the locking assembly on the side wall of sleeve 5 (including connecting rod 16, collar 17, smooth rod 18, and locking block 14) is activated. The upper surface of the smooth rod 18 in the locking assembly overlaps with the side wall of the crossbeam 3, thereby achieving the initial positioning of the locking assembly. At the same time, the locking block 14 in the locking assembly engages in the slot 15 on the side wall of slider 9 of the limiting assembly. The compression spring 22 installed at the bottom of the locking block 14 and whose end is engaged with the sleeve 5 (the compression direction of the compression spring 22 is consistent with the moving direction of the locking block 14) is used to stably position the initial position of the limiting component. The upright rod 19 installed on the sleeve 5 moves through the connecting rod 16 and the locking block 14. The end of the positioning nut 21 installed on the threaded rod 20 at the top of the upright rod 19 (the diameter is smaller than the diameter of the upright rod 19) is in contact with the end of the connecting rod 16, which can help improve the stability of the locking component positioning.

[0051] After the initial positioning of the limiting component is completed, the locking component is unlocked by adjusting the positioning nut 21, so that the sleeve 5 can slide downward, driving the slider 9 with the slot 15 to move downward synchronously, and finally the locking block 14 separates from the slot 15 of the slider 9. At this time, the positioning spring 13 in the limiting component is reset, automatically driving the pair of clamps 10 installed on the slider 9 to slide towards the side of the single steel bar 2. Since the spacing of the pair of clamps 10 is adapted to the single steel bar 2, and the steel bar 2 is provided with ribs 23, the clamps 10 are stably inserted into the outer wall of the single steel bar 2, so as to achieve precise positioning of the single steel bar 2.

[0052] Next, the positioning assembly on the outer wall of the sleeve 5 is rotated. The positioning assembly includes positioning posts 6 installed on the four sides of the sleeve 5 and perpendicular to the opposite template 1. The positioning posts 6 have threaded holes inside, and adjusting rods 7 are screwed into the threaded holes. The adjusting rods 7 are rotated so that the top block 8 installed at the end fits against the inner wall of the template 1. During the process, the corresponding position of the sleeve 5 is adjusted according to the fit between the top block 8 and the template 1, thereby positioning the position of the entire reinforcing bar 2 and ensuring that the entire reinforcing bar 2 is located in the center of the template 1.

[0053] Finally, high-ductility concrete is poured into the cavity between template 1 and reinforcing bar 2. During the pouring process, the concrete flows downward under the influence of gravity. When the downward-flowing concrete hits sleeve 5, it exerts a downward force on sleeve 5, causing sleeve 5 to move downward synchronously with the concrete flow direction. Since the clamping plate 10 and the single reinforcing bar 2 have formed a stable fit and positioning, the downward movement of sleeve 5 in the same direction will not disrupt the positioning relationship between clamping plate 10 and reinforcing bar 2, ensuring that clamping plate 10 and reinforcing bar 2 are always in a precise positioning state. After the concrete has completely solidified and reached the design strength, the locking bolts, mounting plate 4, beam 3 and template 1 are removed in sequence to complete the high-ductility concrete construction reinforcement process of the entire masonry structure reinforcement. Through the cooperation of each component in the above process, the positioning accuracy of reinforcing bar 2 is effectively improved, ensuring the quality of reinforcement construction.

Claims

1. A method for reinforcing a high ductility concrete construction based on a masonry column structure reinforcement, characterized by: The method comprises the following steps: Step one: the assembled template (1) is sleeved on the outer wall of the steel bar (2); Step two: the sleeve (5) is arranged on the outer wall of the steel bar (2); Step three: the limiting assembly of the sleeve (5) is moved to the initial position, and the locking assembly of the sleeve (5) is started to position the position of the limiting assembly; Step four: after unlocking the locking assembly, the limiting assembly is inserted into the outer wall of the single steel bar (2) to position the position of the single steel bar (2); Step five: rotate the positioning assembly of the outer wall of the sleeve (5), the output end of the positioning assembly is in close contact with the inner wall of the template (1), the positioning assembly is used for positioning the position of the whole steel bar (2), and the whole steel bar (2) is guaranteed to be located in the center position of the template (1); Step six: pouring concrete, waiting for the concrete to solidify and then carrying out the demolding operation.

2. The method for reinforcing high ductility concrete construction according to claim 1, wherein The positioning assembly comprises a positioning column (6), the positioning column (6) is installed on four sides of the sleeve (5), the positioning column (6) is perpendicular to the opposite template (1), a threaded hole is formed in the positioning column (6), an adjusting rod (7) is screwed and installed in the threaded hole, a top block (8) is installed at the tail end of the adjusting rod (7), the adjusting rod (7) is rotated, the top block (8) is in close contact with the side wall of the template (1), and the corresponding position of the sleeve (5) is adjusted.

3. The method of claim 1, wherein the method is characterized by: A pair of cross beams (3) are transversely installed above the template (1), mounting plates (4) are installed at both ends of the cross beams (3), the mounting plates (4) are in close contact with the outer wall of the template (1), locking bolts are screwed and installed on the mounting plates (4), the tail ends of the locking bolts are in close contact with the side wall of the template (1), one end of the locking assembly is overlapped on the cross beam (3), and the position of the locking assembly is positioned.

4. The method of claim 3, wherein the method is characterized by: The locking assembly comprises a connecting rod (16), a sleeve ring (17) is rotatably installed on the side wall of the connecting rod (16), a polished rod (18) is installed on the side wall of the sleeve ring (17), the upper surface of the polished rod (18) is overlapped and arranged on the side wall of the cross beam (3), a clamping block (14) is installed at the bottom of the connecting rod (16), and the clamping block (14) is used for clamping on the positioning assembly.

5. The method of claim 4, wherein the method is characterized by: A compression spring (22) is installed at the bottom of the clamping block (14), the tail end of the compression spring (22) is clamped on the sleeve (5), and the compression direction of the compression spring (22) and the moving direction of the clamping block (14) are on the same straight line.

6. The method of claim 4, wherein the method is characterized by: The positioning assembly comprises a sliding block (9), the sliding block (9) is slidably arranged at the corner of the sleeve (5), a pair of clamping plates (10) are installed on the sliding block (9), the interval between the pair of clamping plates (10) is matched with the single steel bar (2), and the steel bar (2) is provided with a rib (23).

7. The method of claim 6, wherein the method is characterized by: The slider (9) is movably provided with a positioning rod (11), both ends of the positioning rod (11) are provided with positioning seats (12), the side wall of the positioning rod (11) is sleeved with a positioning spring (13), one end of the positioning spring (13) is clamped on the positioning seat (12), and the other end of the positioning spring (13) is clamped on the side wall of the slider (9), and the positioning spring (13) is used for automatically driving the clamping plate (10) to slide to one side of the single steel bar (2) after the clamping block (14) and the clamping groove (15) are separated.

8. The method of claim 4, wherein the method is characterized by: The sleeve (5) is provided with a vertical rod (19), the vertical rod (19) movably penetrates the connecting rod (16) and the clamping block (14), and the top of the vertical rod (19) is provided with a threaded rod (20).

9. The method of claim 6, wherein the method is characterized by: The side wall of the slider (9) is provided with a clamping groove (15), and the tail end of the clamping block (14) is inserted into the clamping groove (15).

10. The method of claim 8, wherein the method is characterized by: The diameter of the threaded rod (20) is smaller than that of the vertical rod (19), and the threaded rod (20) is provided with a positioning nut (21), and the end of the positioning nut (21) is in close contact with the end of the connecting rod (16).

Images