A tightly jointed vertical seam grouting sealing leakproof device and its installation method

Abstract

The application discloses a closely-piled vertical-seam grouting sealing leakage-proof device and a mounting method thereof, which comprises a formwork and a fixing assembly. The formwork is arranged on the two sides of a shear wall and is fixed on the shear wall through the fixing assembly. The formwork comprises a flexible part and a rigid part. The flexible part and the rigid part are fixed through a mounting structure, and the flexible part is attached to the shear wall. When grouting, the grout cannot seep out of the gap of the formwork, the quality forming effect of the vertical-seam grouting structure can be greatly improved, and the risk of rework is reduced.

Description

Technical Field

[0001] This invention relates to a novel tight-fitting vertical joint grouting sealing and leak-proof device and its installation method, which is adapted to the construction process of high-flowability grouts (grouting materials, UHPC, etc.). It belongs to the field of construction. Background Technology

[0002] As a product of the development of the construction industry, prefabricated buildings, even with new tight-fitting vertical joint grouting technology, may still have various quality problems. Among them, the common problem of grout leakage during the vertical joint grouting process is due to the aluminum formwork not fitting properly to the wall. In addition, most existing prefabricated structures, especially vertical components, use grouting materials or UHPC and other high-strength, high-flowability materials for filling and fixing. For these materials with special properties, using traditional molds for sealing will result in a high probability of grout leakage and poor compaction.

[0003] This will result in poor flatness and insufficient strength in the final structure, posing a quality risk. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a tight-fitting vertical joint grouting sealing and leak-proof device and its installation method to solve the problem.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tight-fitting vertical joint grouting sealing and leak-proof device, comprising a template and a fixing component. The template is disposed on both sides of a shear wall and fixed to the shear wall by the fixing component. The template includes a flexible part and a rigid part. The flexible part and the rigid part are fixed together by an installation structure, and the flexible part is in contact with the shear wall.

[0006] Preferably, the flexible part includes a flexible latex pad; the rigid part is an aluminum template.

[0007] Preferably, the flexible part is laid on the rigid part, and the bottom of the flexible part has an extended edge, the length of which extends 2 cm to 5 cm beyond the bottom edge of the rigid part.

[0008] Preferably, the flexible part has a plurality of longitudinally arranged notches distributed on its front side; the notches correspond to the vertical joints between the two shear walls.

[0009] Preferably, the notch is arc-shaped; the arc diameters of the several notches are different.

[0010] Preferably, the back of the flexible part is provided with a plurality of regularly arranged grooves, the grooves corresponding to the rigid part.

[0011] Preferably, the mounting structure includes a plurality of mounting sub-holes reserved on the flexible part, mounting female holes reserved on the rigid part corresponding to the mounting sub-holes, and fasteners for connecting and fixing the mounting sub-holes and the mounting female holes; the fasteners include thin steel washers and hollow bolts; the thin steel washers are in close contact with the mounting sub-holes, and the hollow bolts pass through the thin steel washers and are threadedly connected to the mounting female holes.

[0012] Preferably, the fixing component includes a back rib, a steel washer, a long screw, and a nut; the back rib and the steel washer are both placed on the back of the rigid part; the long screw passes through the template and shear wall on both sides and is locked and fixed by the nut.

[0013] Preferably, the long screw passes through the hollow bolt.

[0014] A method for installing a tight-fitting vertical joint grouting sealing and leak-proof device, characterized by the following steps;

[0015] Step 1: Set mounting holes. Reserve mounting holes for fixing components on the shear wall. There are at least 4 mounting holes, located on both sides of the vertical joint, and the distance between the mounting holes and the vertical joint is not less than 30 cm.

[0016] Step 2; Matching the flexible part with the vertical seam: Measure the width of the vertical seam with a measuring ruler, and select the notch on the flexible part with the corresponding arc diameter based on the measured width of the vertical seam.

[0017] Step 3: Complete the positioning of the flexible part on the rigid part, align the back of the flexible part with the rigid part, and align the mounting sub-hole of the flexible part with the mounting female hole of the rigid part. The mounting sub-hole is installed according to the notch orientation of the flexible part matched in Step 2, so as to meet the following conditions.

[0018] S31; After the template is installed in the mounting holes, the flexible part covers the vertical seam;

[0019] S32; The vertical seam corresponds to the measured and matched notch;

[0020] S33; The arc diameter of the notch is greater than the width of the vertical slit;

[0021] Step 4: Complete the assembly of the template, place thin steel shims on the mounting sub-holes, and use hollow bolts to pass through the thin steel shims and connect them to the mounting female holes with threads, thereby forming a fixed connection between the flexible part and the rigid part;

[0022] Step 5; Fixing the template to the shear wall: After attaching the flexible part to the shear wall, place the back rib and steel shim on the back of the rigid part. Then, pass the long screw through the back rib and steel shim in sequence, and through the hollow bolt and then through the mounting hole on the shear wall until it reaches the other template and fixing component. Finally, tighten the long screw with the nut. This completes the fixing of the two templates to the shear wall.

[0023] Beneficial effects

[0024] This invention, by attaching the flexible part of the template to the shear wall, prevents the grout from seeping out of the template gaps during grouting, which greatly improves the quality and forming effect of vertical joint grouting structures and reduces the risk of rework. Attached Figure Description

[0025] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the template of the present invention;

[0027] Figure 2 This is a side view of the template of the present invention.

[0028] Figure 3 This is a schematic diagram of the template installation structure of the present invention. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Please see Figures 1-3 This invention provides a technical solution for a tight-fitting vertical joint grouting and sealing leak-proof device: it includes a template and a fixing component 3. The template is set on both sides of a shear wall 4 and fixed to the shear wall 4 by the fixing component 3. In this way, the vertical joint between two shear walls 4 will be clamped by the template, and then concrete grout will be poured in to complete the grouting of the vertical joint.

[0031] The template includes a flexible part 2 and a rigid part 1; the flexible part 2 and the rigid part 1 are fixed together by an installation structure, and the flexible part 2 is attached to the shear wall 4.

[0032] The flexible part 2 includes, but is not limited to, a flexible latex pad; the rigid part 1 is an existing aluminum template. This use of a flexible latex pad allows the template to fit tightly against the shear wall 4, preventing concrete grout from seeping out from the gap between the shear wall 4 and the template during grouting.

[0033] The flexible part 2 is laid on the rigid part 1, so that the flexible part 2 combines with the rigid part 1 with its maximum surface area, thereby increasing the coverage area of ​​the vertical joint and ensuring that the vertical joint is completely held by the flexible part 2. It is worth mentioning that the bottom of the flexible part 2 has an extension edge 24, which extends 2 cm to 5 cm beyond the bottom edge of the rigid part 1. So when the formwork is installed in the shear wall 4, the extension edge 24 will fit tightly against the ground, thus preventing concrete slurry from seeping out from the ground where the formwork and the shear wall 4 are in contact, greatly reducing the subsequent cleaning process. In one embodiment, the preferred length of the extension edge 24 is 2 cm. This extension edge 24 has sufficient length to fold over under force and wrap around the bottom edge of the rigid part 1, thereby filling the dead corner between the vertical joint and the ground and blocking the bottom of the vertical joint, which is most prone to slurry seepage.

[0034] Because the flexible part 2 is elastic, under pressure, some of it will be squeezed into the vertical seam, resulting in a shallow indentation after grouting, which will affect the overall aesthetics. Therefore, several longitudinally arranged notches 22 are distributed on the front of the flexible part 2. These notches 22 are arc-shaped along their length, so that after compression, the originally arc-shaped notches 22 will be compressed into a flat surface, making the grouted vertical seam flat. Furthermore, the arc diameters of the notches 22 are different, allowing for the selection of appropriate notches 22 based on the width of the vertical seam. This greatly improves the practicality of the flexible part 2, making it suitable for vertical seams of various widths.

[0035] To prevent the flexible part 2 from easily deforming due to its inherent elasticity after it is combined with the rigid part 1, which would make it difficult for the notch 22 to be accurately aligned with the vertical seam, several regularly arranged grooves 23 are provided on the back of the flexible part 2. The grooves 23 correspond to the rigid part 1. In this way, after the flexible part 2 is in close contact with the shear wall 4, the grooves 23 are deformed by force and tightly rub against the rigid part 1 to fix it. The remaining notches 22 will also rub against the shear wall 4 to fix it. In this way, the flexible part 2 is not easy to deform on the rigid part 1.

[0036] The mounting structure includes several mounting sub-holes 21 pre-drilled on the flexible part 2, mounting female holes 11 pre-drilled on the rigid part 1 corresponding to the mounting sub-holes 21, and fasteners for connecting and fixing the mounting sub-holes 21 and the mounting female holes 11. The fasteners include thin steel washers 25 and hollow bolts 24. The thin steel washers 25 are tightly fitted to the mounting sub-holes 21, and the hollow bolts 24 pass through the thin steel washers 25 and are threadedly connected to the mounting female holes 11. In one example, there are four mounting sub-holes 21, located at the four corners of the flexible part 2, while there are several mounting female holes 11, arranged regularly on the upper and lower sides of the rigid part 1. The spacing between the upper and lower mounting sub-holes 21 is slightly smaller than the spacing between the upper and lower mounting female holes 11. This allows the flexible part 2 to have a certain tension when it expands due to its own elasticity, allowing the flexible part 2 to deform in advance and preventing deformation after being subjected to force. With this configuration, the flexible part 2 can be installed arbitrarily along the regularly arranged mounting holes 11, allowing the lateral position of the flexible part 2 within the rigid part 1 to be adjusted for subsequent positioning. Furthermore, the thin steel shim 25 increases the stress-bearing area of ​​the hollow bolt 24, preventing it from detaching from the mounting sub-hole 21 and avoiding damage to the flexible part 2, thus extending its service life. Preferably, the hollow bolt 24 is an internal hexagon bolt, facilitating installation and fixing by construction personnel and simplifying the drilling of the hollow holes within it. Preferably, the mounting sub-hole 21 has a recess 211 for placing the hollow bolt 24, preventing it from protruding from the plane of the flexible part 2 after installation and avoiding obstruction when the flexible part 2 is in close contact with the shear wall 4.

[0037] The fixing component 3 includes a back rib 33, a steel washer 32, a long screw 31, and a nut 34. The back rib 33 and the steel washer 32 are both located on the back of the rigid part 1. The long screw 31 passes through the template and shear wall 4 on both sides and is locked in place by the nut 34. The fixing component 3 completes the fixing of the template to the shear wall 4. It is worth mentioning that the long screw 31 passes through the hollow bolt 24, thus achieving the purpose of the long screw 31 passing through the template. The advantages of this are twofold: firstly, the adhesion between the template and the shear wall 4 depends on the tightness of the long screw 31 and the nut 34; that is, the tighter the nut 34 is tightened, the greater the adhesion between the template and the shear wall 4. Secondly, it eliminates the need for additional holes in the flexible part 2 and the rigid part 1 for the long screw 31 to be inserted; it passes directly through the hollow bolt 24, which is more convenient and less labor-intensive.

[0038] Preferably, to further enhance the filling effect, a vibration motor 5 is provided on the back of the rigid part 1. After the grout is poured, the vibration motor 5 can be started to work. The vibration motor 5 applies vibration force to the rigid part 1, and the rigid part 1 transmits the force to the flexible part 2, so that the flexible part 2 follows the vibration, thereby shaking out the air bubbles in the concrete in the vertical joint and making the concrete more compact.

[0039] Preferably, to further shorten the construction period, a heater 6 is provided on the back of the rigid part 1. The heater 6 acts on the rigid part 1, and the rigid part 1 transfers heat to the flexible part 2. The flexible part 2 then heats the slurry, making it easier to flow. In one embodiment, if the ambient temperature is close to 0 degrees Celsius, the fluidity of the slurry will decrease, thus extending the construction period. However, the heater 6, installed on the external rigid part 1, can raise the temperature of the slurry in the vertical joint without direct contact with the slurry, thereby ensuring the fluidity of the slurry. Of course, the increased temperature should not be too high to avoid damaging the flexible part 2. Preferably, the operating temperature of the heater 6 is 20°C to 40°C.

[0040] An installation method for a tight-fitting vertical joint grouting sealing and leak-proof device includes the following steps;

[0041] Step 1: Set mounting holes 41. Pre-reserve mounting holes 41 on the shear wall 4 for the installation of fixing components 3. There are at least 4 mounting holes 41, located on both sides of the vertical joint, and the distance between the mounting holes 41 and the vertical joint is not less than 30 cm.

[0042] Based on step 1, the diameter of the mounting hole 41 corresponds to the long screw 31, ensuring that the long screw 31 can pass smoothly through the mounting hole 41. Having at least four mounting holes 41 ensures that all four corners of the template can be fixed during subsequent template installation. In one embodiment, the four mounting holes 41 are arranged in a square on both sides of the vertical joint, meaning each shear wall 4 has two mounting holes 41. The mounting holes 41 are 30 cm away from the vertical joint. This arrangement serves several purposes: firstly, it allows the template to completely cover the vertical joint; secondly, it ensures that the flexible part 2 has sufficient space to be positioned on the rigid part 1; and thirdly, it reduces the material used in the template, decreasing its weight and facilitating installation by construction workers.

[0043] Step 2; Matching the flexible part 2 with the vertical seam: Measure the width of the vertical seam with a measuring ruler, and select the notch 22 on the flexible part 2 with the corresponding arc diameter based on the measured width of the vertical seam.

[0044] Step 3: Complete the positioning of the flexible part 2 on the rigid part 1, align the back of the flexible part 2 with the rigid part 1, and align the mounting sub-hole 21 of the flexible part 2 with the mounting female hole 11 of the rigid part 1. The mounting sub-hole 21 is installed according to the orientation of the notch 22 of the flexible part 2 matched in Step 2, so as to satisfy the following conditions.

[0045] S31; After the template is installed in the mounting hole 41, the flexible part 2 covers the vertical seam;

[0046] S32; The vertical seam corresponds to the measured and matched notch 22;

[0047] S33; The arc diameter of notch 22 is greater than the width of the vertical slit;

[0048] Based on steps 2-3, after measuring the width of the vertical joint, a corresponding notch 22 can be selected in the flexible part 2. As described in step S33, the arc diameter of the specific notch 22 is 0.5cm to 1cm greater than the width of the vertical joint. Preferably, the corresponding arc diameter is laser-marked on one side of each notch 22, making it easier for construction personnel to determine which notch 22 can fit with the vertical joint. Preferably, the depth of the notch 22 is no higher than 1cm, and the depth of the notch 22 can be uniformly planned. In one embodiment, the arc diameter of the notch 22 is 0.5cm greater than the width of the vertical joint, while the depth of the notch 22 is 0.5cm. Thus, when the flexible part 2 is subjected to force, the originally arc-shaped notch 22 will be compressed into a flat surface, thereby clamping the vertical joint in a flat posture. This avoids shallow grooves 23 or protrusions on the wall surface during subsequent grouting, reducing the need for subsequent repair work by construction personnel. Based on steps S31-S32, the flexible part 2 can be installed along the regularly arranged mounting holes 11 to meet the above requirements, so that after the template is installed in the mounting hole 41, the flexible part 2 covers the vertical seam, and the corresponding notch 22 is placed on the vertical seam.

[0049] Step 4: Complete the assembly of the template, place the thin steel shim 25 on the mounting sub-hole 21, and use the hollow bolt 24 to pass through the thin steel shim 25 and thread it to the mounting female hole 11, thereby forming the fixation between the flexible part 2 and the rigid part 1;

[0050] After positioning the flexible part 2 on the rigid part 1, the template assembly can be quickly completed through step 4.

[0051] Step 5; Fixing the template to the shear wall 4: After attaching the flexible part 2 to the shear wall 4, place the back rib 33 and steel shim 32 on the back of the rigid part 1. Then, pass the long screw 31 through the back rib 33 and steel shim 32 in sequence, and through the hollow bolt 24 and then through the mounting hole 41 on the shear wall 4 until it reaches another template and fixing component 3. Finally, tighten the long screw 31 with nut 34. This completes the fixing of the two templates to the shear wall 4.

[0052] Step 5 eliminates the need for additional drilling on the template, allowing direct connection using the installation structure. This reduces the number of steps in template production and facilitates faster construction. Furthermore, the tightness of the long screw 31 and nut 34 can be adjusted to ensure proper contact between the flexible part 2 and the shear wall 4. In another embodiment, based on steps 1-4, if the flexible part 2 is in the middle, a hollow bolt 24 is pre-screwed into the mounting female hole 11. The long screw 31 then passes directly through this hollow bolt 24 to the mounting hole 41 and connects with the nut 34, without needing to pass through the mounting sub-hole 21. This allows the mounting female hole 11 to serve as the connection point between the template and the shear wall 4. If the mounting hole 41 pre-drilled in the shear wall 4 deviates, it can be corrected using the regularly arranged mounting female holes 11, greatly improving the structure's applicability and versatility.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A densely jointed vertical seam grouting sealing leakproof device, comprising a formwork and a fixing assembly, the formwork is arranged on both sides of a shear wall and is fixed on the shear wall through the fixing assembly; characterized in that: The template includes a flexible part and a rigid part; the flexible part and the rigid part are fixed together by an installation structure, and the flexible part is attached to the shear wall; the flexible part is laid on the rigid part; the front of the flexible part has several longitudinally arranged notches; the notches correspond to the vertical joints between two shear walls; the notches are arc-shaped; the arc diameters of the notches are different; the installation structure includes several pre-drilled mounting holes in the flexible part, pre-drilled mounting female holes in the rigid part corresponding to the mounting holes, and fasteners for connecting and fixing the mounting holes and mounting female holes; the fasteners include thin steel washers and hollow bolts; the thin steel washers are close to the mounting holes, and the hollow bolts pass through the thin steel washers and are threadedly connected to the mounting female holes; the fixing components include back ribs, steel washers, long screws, and nuts; the back ribs and steel washers are both placed on the back of the rigid part; the long screws pass through the template and shear walls on both sides and are locked and fixed by nuts; the long screws pass through the hollow bolts; the arc diameter of the notches is greater than the width of the vertical joints.

2. The tight-fitting vertical joint grouting sealing and leak-proof device according to claim 1, characterized in that: The flexible part includes a flexible latex pad; the rigid part is an aluminum template.

3. The tight-fitting vertical joint grouting sealing and leak-proof device according to claim 1, characterized in that: The bottom of the flexible part has an extended edge, the length of which extends 2 cm to 5 cm beyond the bottom edge of the rigid part.

4. The tight-fitting vertical joint grouting sealing and leak-proof device according to claim 1, characterized in that: The flexible part has several regularly arranged grooves on its back side, and the grooves correspond to the rigid part.

5. An installation method for a tight-fitting vertical joint grouting sealing and leak-proof device, characterized in that: The installation method of the tight-fitting vertical joint grouting sealing and leak-proof device as described in any one of claims 1 to 4 includes the following steps; Step 1: Set mounting holes. Reserve mounting holes for fixing components on the shear wall. There are at least 4 mounting holes, located on both sides of the vertical joint, and the distance between the mounting holes and the vertical joint is not less than 30 cm. Step 2; Matching the flexible part with the vertical seam: Measure the width of the vertical seam with a measuring ruler, and select the notch on the flexible part with the corresponding arc diameter based on the measured width of the vertical seam. Step 3: Complete the positioning of the flexible part on the rigid part, align the back of the flexible part with the rigid part, and align the mounting sub-hole of the flexible part with the mounting female hole of the rigid part. The mounting sub-hole is installed according to the notch orientation of the flexible part matched in Step 2, so as to meet the following conditions. S31; After the template is installed in the mounting holes, the flexible part covers the vertical seam; S32; The vertical seam corresponds to the measured and matched notch; S33; The arc diameter of the notch is greater than the width of the vertical slit; Step 4: Complete the assembly of the template, place thin steel shims on the mounting sub-holes, and use hollow bolts to pass through the thin steel shims and connect them to the mounting female holes with threads, thereby forming a fixed connection between the flexible part and the rigid part; Step 5; Fixing the template to the shear wall: After attaching the flexible part to the shear wall, place the back rib and steel shim on the back of the rigid part. Then, pass the long screw through the back rib and steel shim in sequence, and through the hollow bolt and then through the mounting hole on the shear wall until it reaches the other template and fixing component. Finally, tighten the long screw with the nut. This completes the fixing of the two templates to the shear wall.

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