An assembled wallboard vertical joint pouring structure
By using partition plates and guide ribs in the vertical joints of prefabricated wall panels, the problems of obstructed grout flow and void defects were solved, achieving high-quality joint filling and improving the safety and controllability of construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN SIJIAN GRP CO LTD
- Filing Date
- 2025-10-14
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, during the grouting process of vertical joints in prefabricated wall panels, the flow of grout is obstructed and air is difficult to expel, leading to quality defects such as voids and honeycombing, which reduces the load-bearing capacity of the joints.
The vertical joint is divided into multiple sub-chambers by partitions, and grouting is carried out in stages through the design of grouting holes and overflow holes. Combined with the inclined partitions and guide ribs, the fluidity and compactness of the grout are ensured.
It improves the density and uniformity of joints, reduces the risk of grout leakage and formwork bursting, simplifies construction operations, enhances construction safety and controllability, and ensures grouting quality.
Smart Images
Figure CN224531961U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, specifically to a prefabricated wall panel vertical joint casting structure. Background Technology
[0002] In prefabricated concrete structures, the connection between precast wall panels is a crucial link in the entire structural system, and its quality directly affects the integrity, safety, and durability of the building. Vertical joints are one of the most common connection forms in wall systems, and are typically achieved by pouring high-strength grout into the cavities reserved between adjacent wall panels.
[0003] For example, patent CN109667352A discloses a toothed groove waterproof connection structure for vertical joint grouting of prefabricated wall panels in prefabricated buildings. The toothed groove structure is used as the connection form for two adjacent prefabricated wall panels. The cavity between the wall panels, i.e. the vertical joint, is filled with flexible waterproof mortar from top to bottom using a grouting tube. This single-time integral grouting method has inherent defects that are difficult to overcome: Since the vertical joint is usually high and narrow, the flow of grout is hindered by the internal connecting steel bars during the process of grouting from top to bottom. At the same time, the air in the cavity is easily wrapped by the viscous grout or trapped in dead corners during the upward process, resulting in quality defects such as voids and honeycombs after the grout hardens. These defects will significantly weaken the effective load-bearing area of the joint and reduce its shear and bending resistance. Utility Model Content
[0004] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a prefabricated wall panel vertical joint casting structure to solve the problem of incomplete filling of vertical joints after the prefabricated infill wall panel is installed.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A prefabricated wall panel vertical joint casting structure includes adjacent first and second wall panels, with a vertical joint between the two infill wall panels, characterized in that it further includes: A sealing assembly, fixed to both sides of a vertical joint, is used to seal the vertical joint into a joint cavity with an opening at the top. The partitions are arranged in multiple sets at intervals along the height of the joint chamber. The multiple sets of partitions are fixedly connected to the adjacent side walls of the first or second wall panel, and the multiple sets of partitions are distributed in a stepped manner from bottom to top to divide the joint chamber into multiple sets of adjacent and connected sub-chambers.
[0006] Furthermore, the grouting holes are distributed near the connection between the partition plate and the wall panel at the upper end of the corresponding sub-chamber.
[0007] Furthermore, the overflow hole is located above the partition plate at the upper end of the sub-chamber group and below the grouting hole of the upper sub-chamber group.
[0008] Furthermore, the partition is made of a polymer, fiber cement, or non-corrosive metal material.
[0009] Furthermore, the sealing assembly includes an alkali-resistant fiberglass mesh and an adhesive. The alkali-resistant fiberglass mesh is fixedly connected to the front and rear sides of the first and second wall panels by the adhesive, and the adhesive extends into the vertical joint to a certain depth.
[0010] Furthermore, the partition plates are distributed at an angle downwards from the connection point between the partition plate and the wall to the end of the partition plate away from the connection point.
[0011] Furthermore, the partition plate forms an angle of 10 to 15° with the horizontal plane.
[0012] Furthermore, the upper surface of the partition plate is provided with multiple sets of guide ribs distributed at intervals along the length direction of the joint chamber, and the length of the guide ribs is distributed along the width direction of the partition plate.
[0013] The technical solution provided by this utility model has the following advantages compared with the prior art: 1. By setting partitions, the vertical joint is divided into multiple areas (sub-chambers) for separate grouting. When grouting each sub-chamber, the flow path of the grout is short, and air is more easily discharged from the top, thereby reducing the probability of defects such as voids and honeycomb, and improving the density and uniformity of the joint grouting. 2. The phased grouting construction reduces the requirements for single grouting operations, avoids the risk of grout leakage and formwork bursting caused by excessive hydrostatic pressure of the grout, and the phased pouring breaks down high pressure into multiple low-pressure operations, effectively avoiding the above risks, simplifying the requirements for sealing components, and improving the safety and controllability of construction. 3. The grouting holes are located near the connection between the upper partition plate and the wall panel of the corresponding sub-chamber to reduce the probability of grout climbing up from the gap between the upper partition plate and the other wall panel, thereby improving the compactness of the grouting in this group of sub-chambers. 4. The partition plates are arranged at an angle downwards (from the connection point between one end of the partition plate and the wall panel to the gap between the other end and the other wall panel). Even if the grout rises to the top of the partition plate of the sub-chamber, the grout will still flow back to the interior of the lower sub-chamber under the action of gravity, ensuring that the grout can fill each sub-chamber step by step and densely, further ensuring the overall grouting quality. 5. By setting guide ribs on the upper surface of the partition plate, the slurry overflowing from the upper surface of the partition plate can be guided to the lower sub-chamber, which can break the surface tension, improve the fluidity of the slurry, and prevent the slurry from accumulating on the partition plate. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a front view of the structure of the first embodiment of this utility model; Figure 2 for Figure 1 Enlarged view of a section at point A (showing the partition). Figure 3 This is a top view of the structure of the first embodiment of the present utility model; Figure 4 for Figure 3 BB section view; Figure 5 for Figure 4 Enlarged view of a portion of point C in the middle; Figure 6 This is a schematic diagram of the structure of the second embodiment of the present utility model; Figure 7 for Figure 6 Schematic diagram of the distribution of grouting holes and overflow holes; Figure 8 This is a schematic diagram of the structure of the third embodiment of the present utility model; Figure 9 This is a top view of the partition structure in the third embodiment of this utility model.
[0016] in: 1-First wall panel, 2-Second wall panel, 3-Sealing component, 301-Alkali-resistant fiberglass mesh, 302-Adhesive, 4-Joint chamber, 401-Sub-chamber, 5-First partition plate, 6-Second partition plate, 7-Grouting hole, 8-Overflow hole, 9-Guiding rib. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0018] First Embodiment like Figures 1-5 As shown, this utility model provides a prefabricated wall panel vertical joint casting structure, including an adjacent first wall panel 1 and a second wall panel 2, with a vertical joint provided on one side of the two adjacent panels. A set of sealing components 3 are provided on the front and rear sides of the gap (i.e., the outer side and the inner side of the wall), respectively. The sealing components 3 seal the vertical joint to form a joint chamber 4 with an open top. Furthermore, multiple partition plates are provided in the height direction inside the joint chamber 4 to divide the joint chamber 4 into multiple sub-chambers 401 distributed from bottom to top and connected in sequence. Each sub-chamber 401 is provided with a corresponding grouting hole 7 and an overflow hole 8, and the grouting hole 7 and the overflow hole 8 are distributed through the front sealing components 3.
[0019] Specifically, in this embodiment, the first wall panel 1 and the second wall panel 2 are respectively provided with irregular grooves and matching irregular protrusions on their adjacent sides to form a joint chamber 4 with a long cross-section; the sealing component 3 is composed of alkali-resistant fiberglass mesh 301 and adhesive 302. The alkali-resistant fiberglass mesh 301 is bonded to the front and rear side walls of the first wall panel 1 and the second wall panel 2 by adhesive 302, and the adhesive 302 extends into the vertical joint to a certain depth to form a joint chamber 4 with an open top.
[0020] partitions, such as Figure 3 and Figure 4As shown, the structure includes a first partition 5 and a second partition 6. The first partition 5 is fixedly connected to the right side wall of the first wall panel 1, and multiple sets of the first partition 5 are evenly distributed at intervals in the height direction. Similarly, the second partition 6 is fixedly connected to the left side wall of the second wall panel 2, and multiple sets of the second partition 6 are evenly distributed at intervals in the height direction. It should be noted that the first partition 5 and the second partition 6 are also distributed at intervals in the height direction. The area between the two partitions together forms a sub-chamber 401. Moreover, a certain gap is provided between the right end of the first partition 5 and the left side wall of the second wall panel 2, and between the left end of the second partition 6 and the right side wall of the first wall panel 1, to ensure that the two adjacent sub-chambers 401 are connected, which facilitates the subsequent grouting operation. Furthermore, the first partition 5 and the second partition 6, which are arranged alternately from bottom to top, together form a tortuous and connected "stepped grouting path".
[0021] More specifically, such as Figure 4 As shown, for one of the sub-chambers 401, the grouting hole 7 is located at the lower part of the sub-chamber 401, and the overflow hole 8 is located above the first partition plate 5 or the second partition plate 7. Moreover, the overflow hole 8 of the sub-chamber 401 is located below the grouting hole 7 of the upper sub-chamber 401. The purpose of this arrangement is that, due to the presence of the partition plate, if the grout flows out from the overflow hole 8, it indicates that the sub-chamber 401 has been grouted and compacted and overflowed to the top of the partition plate, thus ensuring that the sub-chamber 401 is grouted and compacted.
[0022] In addition, the grouting holes 7 are distributed near the connection between the first partition plate 5 and the left side wall of the first wall panel 1 or the connection between the second partition plate 6 and the right side wall of the second wall panel 2. The purpose of this arrangement is to prevent the grout from climbing directly along the side wall where the gap is located during the grouting process, which would cause the grout to overflow before the sub-chamber 401 is filled and the overflow hole 8 is filled. By setting the grouting holes 7 near the connection between the partition plate and the wall panel, even if the grout climbs along the side wall where the connection is located, it will be blocked by the partition plate and fall to the lower position until the sub-chamber 401 is filled. Only then will it overflow from the gap to the top of the partition plate and finally flow out from the overflow hole 8, further ensuring that the grouting in the sub-chamber 401 is dense.
[0023] By setting up the above-mentioned system, the complex grouting operation is broken down into multiple simple, low-stroke grouting steps, which effectively solves the problems of insufficient grout density and poor air expulsion, and provides a reliable structural guarantee for achieving high-quality joint filling.
[0024] The construction method for using this device to cast the vertical joints between adjacent wall panels is as follows: Step 1: Wall panel hoisting and preparation After the first wall panel 1 is hoisted into place and aligned, the second wall panel 2 is hoisted. It should be noted that the distance between the right side of the second wall panel 2 and the left side of the first wall panel 1 is greater than the width of the first partition 5 and the second partition 6. The second wall panel 2 is moved from top to bottom until its lower end is flush with the lower end of the first wall panel 1. Then, the second wall panel 2 is moved to the left to create a gap between them. Figure 2 The vertical joint shown; after hoisting, clean the dust, oil and other debris in the vertical joint, and install the sealing components 3 on the outside and inside of the wall to form the joint chamber 4 to be poured, which is divided into multiple sub-chambers 401 by the partition plate. Check whether all grouting holes 7 and overflow holes 8 are unobstructed.
[0025] Step 2: Casting of the first segment chamber 401 Connect the grouting pump's delivery pipe to the grouting hole 7 of the bottommost sub-chamber 401. Select a special grouting material with high fluidity, micro-expansion, and no shrinkage. After mixing according to the product instructions, start the grouting pump and pump the grouting material into the sub-chamber 401 at a stable and low pressure (such as 0.1-0.2MPa). Continue grouting until you observe uniform and continuous grouting material flowing out of the overflow hole 8, indicating that the sub-chamber 401 has been completely filled and compacted.
[0026] Step 3: First stage consolidation Stop pumping, disconnect the grout delivery pipe, and immediately seal the grouting hole 7 and overflow hole 8 with threaded caps. Allow the grout in sub-chamber 401 to stand and solidify. Depending on the ambient temperature and the properties of the grout, wait 2-4 hours until it reaches the initial setting state and has sufficient strength to support the weight of the previous sub-chamber 401.
[0027] Step 4: Subsequent sub-chamber casting Connect the grouting pipe to the grouting hole 7 of the second sub-chamber 401, repeat the operation of step two, and inject grout into the sub-chamber 401 until the grout flows out from the overflow hole 8. Then, repeat step three, seal the hole and wait for solidification. Repeat the above pouring and solidification process for all sub-chambers 401 in sequence until the entire vertical joint chamber 4 is completely filled. After all the grout has reached the design strength, remove the external temporary fixing and support devices.
[0028] Second Embodiment This embodiment is based on the first embodiment and provides another type of prefabricated wall panel vertical joint casting structure. The difference from the prior art document 1 is that the partition plates are distributed inclined downwards from the connection point with the wall panel to the gap with another wall panel.
[0029] Specifically, such as Figure 6 and Figure 7As shown, the first partition plate 5 is inclined downwards from left to right, and the second partition plate 6 is inclined downwards from right to left. The purpose of this arrangement is that when the grout is injected from the lower grouting hole 7, its liquid level will rise steadily. If the sub-cavity 401 is not completely filled, due to pressure fluctuations or excessively fast local flow, some grout will flow through the gap between the partition plate and the wall plate to the upper sub-cavity 401. At this time, since the partition plate is inclined downwards, this part of the "early overflow" grout will automatically flow back to the lower position in the sub-cavity 401 that is currently being filled under the action of gravity. This ensures that only after the current sub-cavity 401 is almost completely filled and the liquid level is raised as a whole, the grout can stably and continuously cross the partition plate and enter the next sub-cavity 401 above. This greatly ensures the grouting density of the current sub-cavity 401 and avoids the error signal caused by some grout flowing out of the overflow hole 8 after crossing the partition plate due to grout fluctuations in the first embodiment.
[0030] Third Embodiment This embodiment adds a guide rib 9 based on the second embodiment.
[0031] Specifically, such as Figure 8 and Figure 9 As shown, the upper surfaces of the first partition plate 5 and the second partition plate 6 are provided with multiple sets of guide ribs 9. The multiple sets of guide ribs 9 are evenly distributed along the length of the partition plate, and the length of each set of guide ribs 9 is distributed along the width of the partition plate. Through the provided guide ribs 9, the surface tension of the slurry can be broken on the one hand, and the physical guidance and diversion function can be played on the other hand. The overflowing slurry can be effectively guided to the central area of the lower sub-chamber. When the slurry crosses the top of the partition plate and there are gaps inside the sub-chamber 41, the slurry can flow downward along the length of the guide ribs 9, thereby flowing into the lower sub-chamber 401, further ensuring the compactness of the grouting inside the sub-chamber 401.
[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.
Claims
1. A prefabricated wall panel vertical joint casting structure, comprising adjacent first and second wall panels, wherein a vertical joint is provided between the two infill wall panels, characterized in that, Also includes: A sealing assembly, fixed to both sides of a vertical joint, is used to seal the vertical joint into a joint cavity with an opening at the top. Multiple sets of partitions are staggered along the height of the joint chamber. These partitions are fixedly connected to the adjacent sidewalls of the first or second wall panel. The partitions are arranged in a stepped staggered manner from bottom to top to divide the joint chamber into multiple adjacent and interconnected sub-chambers. Each sub-chamber is provided with corresponding grouting holes and overflow holes, which are distributed through the front sealing assembly from front to back.
2. The prefabricated wall panel vertical joint casting structure according to claim 1, characterized in that, The grouting holes are distributed near the connection between the partition plate and the wall panel at the upper end of the corresponding sub-chamber.
3. The prefabricated wall panel vertical joint casting structure according to claim 1, characterized in that, The overflow hole is located above the partition plate at the upper end of the sub-chamber and below the grouting hole of the upper sub-chamber.
4. The prefabricated wall panel vertical joint casting structure according to claim 1, characterized in that, The partition is made of polymer, fiber cement, or non-corrosive metal material.
5. The prefabricated wall panel vertical joint casting structure according to claim 1, characterized in that, The sealing assembly includes an alkali-resistant fiberglass mesh and an adhesive. The alkali-resistant fiberglass mesh is fixedly connected to the front and rear sides of the first and second wall panels by the adhesive, and the adhesive extends into the vertical joint to a certain depth.
6. The prefabricated wall panel vertical joint casting structure according to claim 1, characterized in that, The partitions are distributed at an angle downwards from the point where the partition connects to the wall to the end of the partition away from the connection point.
7. The prefabricated wall panel vertical joint casting structure according to claim 6, characterized in that, The partition plate forms an angle of 10 to 15° with the horizontal plane.
8. The prefabricated wall panel vertical joint casting structure according to claim 1, characterized in that, The upper surface of the partition plate is provided with multiple sets of guide ribs that are spaced apart along the length of the joint chamber, and the length of the guide ribs is distributed along the width of the partition plate.