Anti-crack strip board interior partition door opening structure and interior partition

Abstract

The present invention discloses a crack-proof strip board inner partition wall door opening structure, comprising a prefabricated door head plate and two prefabricated door frame vertical plates. The design of the above-mentioned prefabricated door head plate avoids the existing door opening structure splicing the door head plate at the corner position of the door opening where cracks are most likely to occur; the above-mentioned prefabricated door frame vertical plate body is provided with an L-shaped notch on the upper part, which is convenient for the staggered bite connection between the prefabricated door head plate and the prefabricated door frame vertical plate; the prefabricated door head plate and the prefabricated door frame vertical plate are both provided with prefabricated mortar storage grooves and joint grooves on the outer sides, and the prefabricated door head plate is inserted into the corresponding L-shaped notches of the two prefabricated door frame vertical plates to form a door opening, and the prefabricated mortar storage groove at the joint is densely filled with mortar to form a secondary connector with an internal bolt function for fixed connection; the mesh is spread in the joint groove at the edge of the joint for leveling and connection, which also avoids the need to do another layer of plastering and leveling on a large area of ​​the overall wall surface in the later stage. This door opening structure has a strong resistance and completely solves the problem of cracking at the door opening joint due to the frequent opening and closing vibration of the door.

Description

Technical Field

[0001] The invention belongs to the field of strip board inner partition wall door opening structure, and in particular relates to a prefabricated anti-cracking strip board inner partition wall door opening structure and an inner partition wall. Background Art

[0002] When installing the inner partition wall strips, the door opening is one of the important nodes. The existing inner partition wall strips are installed with the door headboard at the inner corner of the door opening. Due to the frequent opening and closing of the door, the horizontal and vertical joints at the inner corner of the upper part of the door opening are prone to cracking. Therefore, special construction treatment is required when installing and building the door opening. According to market research, the following solutions are often used in existing construction operations to solve the problem of door opening cracking.

[0003] Solution 1: Process the stopper on the existing inner partition wall strips to make the door frame vertical board; cut the corresponding length on the existing lightweight inner partition wall strips to make the door head board; the two ends of the door head board overlap on the stopper of the door frame vertical board to form a door opening, and the inner corner position A is formed at the splicing position of the upper part of the door opening. The joint at the inner corner position A is prone to cracking, please refer to 23. The geometric dimension deviation of the door head board and door frame vertical board cut on site is larger than that of the factory prefabricated products, and the mutual coordination is poor, resulting in uneven size of the splicing gap; the splicing surface of the door frame vertical board and the door head board is bonded by grouting mortar. Due to the uneven size of the splicing gap and the different thickness of the grouting mortar in the splicing joint, the firmness of the bonding at the splicing of the door opening cannot be ensured; after the user uses the door opening constructed in this way for a period of time, due to the frequent opening and closing vibration of the door, it is found that many joints between the door head board and the door frame vertical board at the inner corner position have cracks. In addition, in order to further prevent cracking and level the joints in the prior art, it is necessary to apply another layer of mesh cloth and anti-cracking mortar to the large-area integral wall surface after the splicing is completed, so as to enhance the crack resistance of the joints and level the joints. The secondary construction of mesh cloth and anti-cracking mortar has the disadvantages of long construction period, high construction cost, and high labor intensity; moreover, this method cannot ensure that the corner joints in the door opening will not crack.

[0004] Option 2: Use on-site cast-in-place and on-site masonry door openings. Cast-in-place and on-site masonry are old-style wet operations that produce a lot of construction waste, high costs, and long construction periods.

[0005] At the same time, the operation methods of on-site cutting, processing and building door openings, on-site pouring of door openings and on-site stacking of door openings result in large amounts of dust and garbage pollution, and are not in line with the current prefabricated green building orientation.

[0006] To this end, the present invention provides an anti-cracking strip board inner partition wall door opening structure which completely solves the problem of cracking at the door opening joint due to frequent opening and closing vibrations of the door. Summary of the invention

[0007] In view of the problems existing in the prior art, the present invention provides a door opening structure of an inner partition wall with anti-cracking strips, which can solve the problem of cracking at the joint of the door opening due to the frequent opening and closing vibration of the door.

[0008] The present invention is implemented as follows: a crack-proof strip board inner partition wall door opening structure, comprising a prefabricated door head board and two prefabricated door frame upright boards, characterized in that:

[0009] The prefabricated door head plate comprises a prefabricated door head plate body; the prefabricated door head plate body comprises a door head portion and a door frame connecting portion, the door head portion and the door frame connecting portion are prefabricated in one piece, wherein two door frame connecting portions are provided, and are mirror-symmetrical below the prefabricated door head plate, and the distance between the two door frame connecting portions is equal to the width of the reserved door opening; joint grooves are provided on the outer edges of the prefabricated door head plate body; first prefabricated slurry storage grooves are provided on both sides of the prefabricated door head plate body, and a second prefabricated slurry storage groove connected to the first prefabricated slurry storage groove is provided on the lower end surface of the door frame connecting portion;

[0010] The prefabricated door frame vertical plate comprises a prefabricated door frame vertical plate body; an L-shaped notch for placing a prefabricated door head plate is provided on the upper part of the prefabricated door frame vertical plate body, and a third prefabricated mortar storage groove is provided on the inner side of the L-shaped notch along the height direction and the horizontal direction; a fourth prefabricated mortar storage groove is provided on the side of the prefabricated door frame vertical plate body opposite to the L-shaped notch along the height direction; and joint grooves are provided on the edges of the prefabricated door frame vertical plate body;

[0011] The prefabricated door head plate is inserted into the L-shaped notches of two corresponding prefabricated door frame upright plates to form a door opening; a mortar storage channel is formed between the prefabricated door head plate and the L-shaped notches of the prefabricated door frame upright plates; the mortar is densely filled in the mortar storage channel for connection, and a secondary connection body is formed after the mortar is cured;

[0012] The joint groove on the edge of the prefabricated door head panel is joined with the joint groove on the edge of the L-shaped notch of the prefabricated door frame vertical panel on the corresponding side to form an anti-crack edge sealing groove; mesh cloth and anti-crack mortar are laid in the anti-crack edge sealing groove to form an anti-crack connector.

[0013] The present invention can also adopt the following technical solutions:

[0014] Preferably, steel bars are embedded in the body of the prefabricated door head panel and / or steel bars are embedded in the body of the prefabricated door frame vertical panel.

[0015] Preferably, the steel bars embedded in the door frame connecting part of the prefabricated door head panel body extend out of the lower end surface of the door frame connecting part; corresponding to the above-extended steel bars, steel bar insertion sleeves are embedded in the prefabricated door frame vertical panel body, and the steel bars extending from the lower end of the door frame connecting part are inserted into the steel bar insertion sleeves of the prefabricated door frame vertical panel body.

[0016] Preferably, a steel bar insertion sleeve is embedded in the door frame connecting part of the prefabricated door head panel body; a steel bar insertion sleeve is embedded in the prefabricated door frame vertical panel body at a position corresponding to the steel bar insertion sleeve of the prefabricated door head panel body; and steel bar components are inserted into the steel bar insertion sleeve of the prefabricated door head panel body and the steel bar insertion sleeve of the prefabricated door frame vertical panel body for connection.

[0017] Preferably, a plurality of baffles are integrally prefabricated along the height direction in the prefabricated slurry storage tank on the opposite side of the L-shaped notch, and the height of the baffles is less than the depth of the prefabricated slurry storage tank.

[0018] Preferably, a fifth prefabricated slurry storage tank is provided on the upper end surface of the door head of the prefabricated door head panel body and / or a sixth prefabricated slurry storage tank is provided on the upper end surface of the prefabricated door frame vertical panel body.

[0019] Preferably, the width of the slot openings of the first to sixth prefabricated slurry storage tanks is greater than the width of the slot bottom of the prefabricated slurry storage tanks.

[0020] Preferably, a prefabricated grouting port is provided on the joint groove on one side of the prefabricated door frame vertical plate body, and the prefabricated grouting port is connected to the fourth prefabricated grouting tank.

[0021] Preferably, the prefabricated door frame upright plate body on the L-shaped notch side is a solid structure; and a center hole is prefabricated in the prefabricated door frame upright plate body along the height direction on the other side of the L-shaped notch.

[0022] The present invention also discloses an inner partition wall with a door opening, comprising a wall body and a door opening formed by splicing inner partition wall strips, and is characterized in that the door opening adopts the above-mentioned door opening structure.

[0023] The present invention adopts the above technical solution and has the following advantages and technical effects:

[0024] 1. The two door frame connecting parts of the prefabricated door head plate in the present invention form the inner corner of the door opening with the door head, which abandons the drawback of the existing door opening structure splicing the door opening at the inner corner position where cracking is most likely to occur. The one-piece prefabricated door head plate moves the splicing position of the door opening structure to both sides of the door opening, that is, the door frame connecting part of the prefabricated door head plate of the present invention and the L-shaped notch fitting surface of the prefabricated door frame vertical plate; thereby completely solving the problem of cracking at the splicing position of the door opening caused by splicing the door head plate at the inner corner position of the door opening where cracking is most likely to occur in the existing door opening structure. At the same time, the one-piece prefabricated door head plate also realizes the staggered bite between the door frame vertical plate prefabricated with the L-shaped notch, improving the connection firmness between the prefabricated door head plate and the prefabricated door frame vertical plate.

[0025] 2. Since prefabricated mortar storage grooves are provided at the L-shaped notch of the prefabricated door frame uprights and on both sides of the prefabricated door head board body; when actually building the door opening, the prefabricated mortar storage grooves of the prefabricated door head board and the prefabricated mortar storage grooves at the L-shaped notch of the spliced ​​prefabricated door frame uprights are combined to form a mortar storage channel, and the mortar storage channel is densely filled with mortar; the prefabricated door head board and the prefabricated door frame uprights are bonded and connected by the mortar filled in the mortar storage channel, and the secondary connection body formed after the mortar is cured is thick and has strong bonding force. At the same time, the secondary connection body formed is equivalent to an internal plug, which has strong resistance and can effectively prevent relative displacement and deformation between the prefabricated door head board and the prefabricated door frame uprights due to external forces.

[0026] 3. When actually building the door opening, the joint groove on the edge of the prefabricated door head panel body and the joint groove on the edge of the L-shaped notch of the prefabricated door frame vertical plate are spliced ​​to form an anti-crack edge sealing groove, and mesh cloth and anti-crack mortar are laid in the anti-crack edge sealing groove to form an anti-crack connector. The above-mentioned anti-crack connector and secondary connector firmly connect the prefabricated door head panel and the prefabricated door frame vertical plate from the inside to the outside, completely solving the problem of cracking at the splicing of the door opening due to the frequent opening and closing vibration of the door; in addition, the above-mentioned anti-crack edge sealing groove also has the function of leveling the splicing seams. In the later stage, there is no need to make another layer of mesh cloth and anti-crack mortar on the large-area overall wall surface for leveling, which reduces the construction cost and improves the construction efficiency.

[0027] 4. Steel bars are embedded in the prefabricated door head panels and prefabricated door frame uprights to further improve the flexural and compressive strength of the prefabricated door head panels and prefabricated door frame uprights.

[0028] 5. Pre-embed the steel bars extending out of the lower end face at the door frame connection part or pre-embed the steel bar insertion sleeve in the door frame connection part. When actually building the door opening, the prefabricated door head panel of the present invention is assembled with its matching prefabricated door frame upright plate. Specifically, the steel bars extending out of the lower end face of the door frame connection part are inserted into the steel bar insertion sleeve at the L-shaped notch of the pre-embedded door frame upright plate, or the steel bar insertion sleeve pre-embedded in the door frame connection part and the steel bar insertion sleeve pre-embedded in the L-shaped notch of the door frame upright plate are connected by inserting steel bar components, and the mortar storage channel at their joint is densely filled with mortar. After the mortar is cured, the secondary connection body forms an integrated structure with the inserted steel bars, the prefabricated door head panel and the prefabricated door frame upright plate, thereby further improving the connection strength and integrity between the prefabricated door head panel and the prefabricated door frame upright plate, thereby improving the earthquake resistance and impact resistance of the door opening.

[0029] 6. Several baffles are prefabricated in the prefabricated slurry storage tank on the opposite side of the L-shaped notch of the prefabricated door frame vertical plate, and the height of the baffles is less than the depth of the prefabricated slurry storage tank. The design of the baffles increases the resistance to mortar backflow, and reduces the problem of empty sections at the upper end of the slurry storage channel caused by the mortar flowing back downward along the slurry storage channel due to its own weight in a short period of time; the design of adding segmented baffles can also reduce the large empty sections at the top of the slurry storage channel caused by the shrinkage and sinking of the mortar during the solidification process; after the mortar in the slurry storage tank is solidified, the baffles are equivalent to the internal reinforcement inserted into the secondary connector, which improves the connection firmness between the door frame vertical plate and the adjacent internal partition wall strips. At the same time, the baffles also strengthen the slurry storage tank on the side of the prefabricated door frame vertical plate.

[0030] 7. A prefabricated slurry storage groove is provided on the upper end surface of the door head of the prefabricated door head panel body; it is convenient for the prefabricated door head panel to be installed and connected with the inner partition wall strips spliced ​​above the prefabricated door head panel, and a slurry storage channel is formed between the prefabricated slurry storage groove on the upper end surface of the door head and the matching surface of the inner partition wall strips spliced ​​above the prefabricated door head panel, and the slurry storage channel is densely filled with mortar. The secondary connecting body formed after the mortar solidifies is also equivalent to an inner bolt, which has strong bonding force and resistance, ensuring that the assembled prefabricated door head panel and the inner partition wall strips spliced ​​above the prefabricated door head panel have good connection firmness; the upper end surface of the prefabricated door frame vertical plate body is provided with a prefabricated slurry storage groove, which is convenient for the prefabricated door frame vertical plate to be installed and connected with the top beam or floor slab or the inner partition wall strips spliced ​​above the prefabricated door frame vertical plate body; in addition, this structure can realize multi-faceted continuous grouting, thereby improving construction efficiency.

[0031] 8. A prefabricated grouting port is provided on the joint groove on one side of the prefabricated door frame vertical plate body, and the prefabricated grouting port is connected to the fourth prefabricated slurry storage tank; the prefabricated grouting port is provided to facilitate the grouting operation, eliminating the need to drill the grouting port with a drill during grouting, thereby improving construction efficiency and avoiding damage to the prefabricated door frame vertical plate caused by drilling construction.

[0032] 9. The door head panels and door frame uprights of the door opening structure of the present invention are prefabricated in the factory and installed on site, which ensures the consistency of the products and avoids the defects of large geometric dimension deviations caused by on-site cutting of door head panels and door frame uprights, thus solving the problems of large assembly errors and poor anti-cracking effects caused by on-site cutting and assembly of door openings.

[0033] 10. During actual construction, the door opening structure of the present invention can be installed by either slurrying or grouting, thereby improving work efficiency.

[0034] In summary, the door opening structure of the present invention completely solves the problem of cracks at the joints of the door openings due to frequent opening and closing vibrations of the door; and it is easy to assemble each other during actual construction, thereby improving construction efficiency and reducing labor intensity; factory prefabrication reduces dust and noise pollution in traditional on-site cutting construction, improves the working environment, and responds to the green building action plan. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of embodiment 1 of the present invention;

[0036] Figure 2 It is the K-direction view;

[0037] Figure 3 and Figure 4 This is a schematic diagram of the structure of the prefabricated door headboard in Example 1;

[0038] Figure 5 and Figure 6 It is a schematic diagram of the structure of the prefabricated door frame vertical plate;

[0039] Figure 7 This is a schematic diagram of the structure of the prefabricated door frame vertical plate in Example 2 of the present invention;

[0040] Figure 8 and Fig. 9 is a schematic diagram of the structure of the prefabricated door headboard in Example 2;

[0041] Fig.10 is a schematic diagram of the assembly structure of Example 2;

[0042] Fig.11 is a schematic diagram of the structure of the prefabricated door headboard with steel bars in Example 3;

[0043] Fig.12 is a schematic diagram of the structure of the prefabricated door frame vertical plate with steel bars in Example 3;

[0044] Fig.13 is a schematic diagram of the structure of the prefabricated door headboard in Example 4;

[0045] Fig.14 is a schematic diagram of the structure of the prefabricated door frame vertical plate in Example 4;

[0046] Fig.15 is a schematic diagram of the assembly structure of Example 4;

[0047] Fig.16 is a schematic diagram of the structure of the prefabricated door headboard in Example 5;

[0048] Fig.17 is a schematic diagram of the structure of the prefabricated door frame vertical plate in Example 5;

[0049] Fig.18 is a schematic diagram of the assembly structure of Example 5;

[0050] Fig.19 is a structural schematic diagram of Example 6;

[0051] Fig. 20 is a schematic diagram of the structure of the prefabricated door frame vertical plate in Example 7;

[0052] Fig.21 is a schematic diagram of the structure of the prefabricated door frame vertical plate in Example 8;

[0053] Fig. 22 It is a schematic diagram of the structure of an inner partition wall with a door opening.

[0054] Fig.23 It is a schematic diagram of the prior art structure.

[0055] In the figure, 110, prefabricated door head board body; 111, door head; 112, door frame connection part; 113, first joint groove; 114, first prefabricated slurry storage groove; 115, second prefabricated slurry storage groove; 116, steel bar; 117, second steel bar insertion sleeve; 210, prefabricated door frame vertical board body; 211, L-shaped notch; 212, steel bar; 213, first steel bar insertion sleeve; 214, steel bar member; 220, third prefabricated slurry storage groove; 230, second joint groove; 240, fourth prefabricated slurry storage groove; 250, fifth prefabricated slurry storage groove; 310, slurry storage channel; 311, secondary connector; 320, anti-crack edge sealing groove; 321, anti-crack connector; 400, inner partition wall strip. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0057] In order to solve the problem of cracking in the joints of the existing door opening structure at the corner position of the door opening, the present invention particularly provides an anti-cracking strip board inner partition wall door opening structure and inner partition wall, which are described in detail below in conjunction with the relevant drawings:

[0058] Example 1, please refer to Figures 1 to 6 The invention discloses a door opening structure of an inner partition wall with an anti-cracking strip board, comprising a prefabricated door head board and two prefabricated door frame vertical boards.

[0059] The prefabricated door head plate includes a prefabricated door head plate body 110; see Figure 3 and Figure 4 The prefabricated door head panel body 110 includes a door head portion 111 and a door frame connecting portion 112, and the door head portion 111 and the door frame connecting portion 112 are prefabricated as one piece, wherein two door frame connecting portions 112 are provided, and are mirror-symmetrical under the prefabricated door head panel, and the distance between the two door frame connecting portions 112 is equal to the width of the reserved door opening; the junction of the two door frame connecting portions and the door head forms an inner corner of the door opening, and the door opening structure of the present invention has no joints at the inner corner position of the door opening, and first prefabricated slurry storage grooves 114 are provided on both sides of the prefabricated door head panel body, and a second prefabricated slurry storage groove 115 connected to the first prefabricated slurry storage groove 114 is provided on the lower surface of the door frame connecting portion 112.

[0060] The prefabricated door frame vertical plate includes a prefabricated door frame vertical plate body 210; see Figure 5 and Figure 6 An L-shaped notch 211 for placing a prefabricated door head plate is provided on the upper part of the prefabricated door frame upright plate body, and a third prefabricated slurry storage groove 220 is provided on the inner side surface of the L-shaped notch along the height direction and the horizontal direction; a fourth prefabricated slurry storage groove 240 is provided on the side surface of the prefabricated door frame upright plate body on the opposite side of the L-shaped notch along the height direction; a second joint groove 230 is provided on the edge of the prefabricated door frame upright plate body; the above-mentioned prefabricated door frame upright plate realizes the staggered bite connection between the prefabricated door frame upright plate and the prefabricated door head plate, thereby improving the connection firmness between the prefabricated door frame upright plate and the prefabricated door head plate.

[0061] The prefabricated door head panel is inserted into two corresponding L-shaped notches 211 of the prefabricated door frame upright plate body to form a door opening; a mortar storage channel 310 is formed between the prefabricated door head panel and the L-shaped notches 211 of the prefabricated door frame upright plate; the mortar is densely filled in the mortar storage channel for connection, and the densely filled mortar is solidified to form a secondary connection body 311.

[0062] The two door frame connection parts of the prefabricated door head plate in the present invention form the inner corner of the door opening with the door head, which abandons the drawback of the existing door opening structure splicing the door opening at the inner corner position where cracking is most likely to occur. The one-piece prefabricated door head plate moves the splicing position of the door opening structure to both sides of the door opening, that is, the door frame connection part of the prefabricated door head plate of the present invention and the L-shaped notch fitting surface of the prefabricated door frame vertical plate; thereby completely solving the problem of cracking at the splicing position of the door opening caused by splicing the door head plate at the inner corner position of the door opening where cracking is most likely to occur in the existing door opening structure. At the same time, the one-piece prefabricated door head plate also realizes the staggered bite splicing with the door frame vertical plate prefabricated with the L-shaped notch, thereby improving the connection firmness between the prefabricated door head plate and the prefabricated door frame vertical plate.

[0063] To be more specific: when splicing the door opening, the prefabricated mortar storage groove at the lower end face of the door frame connecting portion 112 of the prefabricated door head plate is combined with the horizontal prefabricated mortar storage groove of the L-shaped notch 211 of the prefabricated door frame vertical plate to form a horizontal mortar storage channel; the prefabricated mortar storage grooves on the two side faces of the prefabricated door head plate are combined with the prefabricated mortar storage grooves on the vertical side faces of the L-shaped notch 211 of the prefabricated door frame vertical plate on the corresponding side to form a vertical mortar storage channel; the above-mentioned horizontal mortar storage channel and the vertical mortar storage channel are connected; the mortar is densely filled in the connected horizontal mortar storage channel and the vertical mortar storage channel After the mortar is solidified, the secondary connector 311 formed is thick and has strong bonding force. At the same time, the secondary connector formed is equivalent to an internal bolt. This internal bolt has strong resistance and can effectively prevent relative displacement and deformation between the prefabricated door head plate and the prefabricated door frame vertical plate caused by external force. The seam groove at the edge of the prefabricated door head plate is combined with the seam groove at the edge of the L-shaped notch of the prefabricated door frame vertical plate on the corresponding side to form an anti-crack edge sealing groove 320. Mesh cloth and anti-crack mortar are laid in the anti-crack edge sealing groove to form an anti-crack connector 321. The above-mentioned secondary connector and anti-crack connector firmly connect the prefabricated door head plate and the prefabricated door frame vertical plate from the inside to the outside, completely solving the problem of cracking at the splicing of the door opening due to the frequent opening and closing vibration of the door. In addition, the above-mentioned anti-crack edge sealing groove also has the function of leveling the splicing seam, and there is no need to make another layer of mesh cloth and anti-crack mortar on the large-area overall wall surface for leveling in the later stage.

[0064] After the installed door opening has been in curing for 28 days, vibration, impact resistance and simulated impact tests are carried out on the surrounding areas of the door opening, and no cracks are found at the joints.

[0065] In the above structure, preferably, the door frame connection part 112 is not too long, because it is not easy to transport and is easy to be bumped or deformed. The height of the door frame connection part 112 is 50 to 300 mm and the width is 150 to 300 mm.

[0066] Embodiment 2: A fifth prefabricated slurry storage tank 250 is provided on the upper end surface of the door head 111 of the prefabricated door head plate body and / or a sixth prefabricated slurry storage tank is provided on the upper end surface of the prefabricated door frame vertical plate body 210, please refer to Figure 7 and Fig. 9 The prefabricated door headboard with this structure cooperates with the prefabricated door frame vertical board and the prefabricated slurry storage groove of the inner partition wall strip connected to it to form a slurry storage channel, which can realize multi-faceted continuous grouting, and the mortar is densely filled in the slurry storage channel. The secondary connector formed after the mortar solidifies also forms an inner plug with strong bonding force and resistance, ensuring that the assembled door opening and the adjacent inner partition wall strips have good connection firmness.

[0067] With this structure, you can also cut the inner partition wall strips with prefabricated slurry storage tanks on the upper part of the prefabricated door head board or prefabricated door frame vertical board according to the actual required height and use them as splicing boards for splicing. Please refer to Fig.10Since a fifth prefabricated mortar storage groove is provided on the upper end surface of the prefabricated door head plate or a sixth prefabricated mortar storage groove is provided on the upper end surface of the prefabricated door head plate, it is convenient to install and connect the prefabricated door head plate, the prefabricated door frame upright plate and the inner partition wall strip plate with the prefabricated mortar storage groove spliced ​​above the prefabricated door head plate and the prefabricated door frame upright plate, and a mortar storage channel is formed between the matching surfaces of the prefabricated door head plate, the prefabricated door frame upright plate and the inner partition wall strip plate, and the mortar is densely filled in the mortar storage channel to ensure that the assembled prefabricated door frame upright plate and the inner partition wall strip plate spliced ​​above the prefabricated door frame upright plate have good connection firmness.

[0068] In the above embodiments, the width of the slot openings of the first to sixth prefabricated slurry storage tanks is greater than the width of the slot bottoms of the prefabricated slurry storage tanks, which is beneficial for demoulding during actual production and improves production efficiency.

[0069] Example 3: Please refer to Figure 11 to Figure 12 In the above technical solution, it is preferred that in order to meet the requirements of some inner wall door openings with higher strength requirements, the prefabricated door head plate body 110 is pre-embedded with steel bars 116 and the prefabricated door frame vertical plate body 210 is pre-embedded with steel bars 212. The steel bars are used to improve the bending and compression resistance of the prefabricated door head plate body and the prefabricated door frame vertical plate body.

[0070] Example 4: Please refer to Figures 13 to 15 In order to further realize that the prefabricated door head plate and the prefabricated door frame vertical plate are connected to form a whole, so as to have stronger crack resistance, the embedded steel bars in the door frame connecting part 112 of the prefabricated door head plate body extend out of the lower end surface of the door frame connecting part; corresponding to the above-mentioned embedded steel bars, the first steel bar insertion sleeve 213 is embedded in the prefabricated door frame vertical plate body, and the steel bars extending from the lower end of the door frame connecting part are inserted into the first steel bar insertion sleeve 213 of the prefabricated door frame vertical plate body, and the mortar storage channel at their joint is densely filled with mortar. After the mortar is cured, the secondary connection body forms an integrated structure with the inserted steel bars, the prefabricated door head plate, and the prefabricated door frame vertical plate, further improving the connection strength and integrity between the prefabricated door head plate and the prefabricated door frame vertical plate, and effectively improving the vibration and impact resistance of the door opening.

[0071] Example 5: Please refer to Figures 16 to 18 , a second steel bar insert sleeve 117 is embedded in the door frame connection part 112 of the prefabricated door head plate body; a first steel bar insert sleeve 213 is embedded in the prefabricated door head plate at a position corresponding to the second steel bar insert sleeve 117 in the prefabricated door frame vertical plate body; a steel bar component 214 is inserted in the second steel bar insert sleeve 117 of the prefabricated door head plate body and the insert sleeve 213 of the prefabricated door frame vertical plate body for connection. The mortar storage channel at their joint is densely filled with mortar, and the secondary connection body after the mortar is cured forms an integrated structure with the steel bar component 214, the prefabricated door head plate, and the prefabricated door frame vertical plate, further improving the connection strength and integrity between the prefabricated door head plate and the prefabricated door frame vertical plate, and effectively improving the anti-vibration and anti-impact capabilities of the door opening.

[0072] Example 6: Please refer to Fig.19 A prefabricated grouting port 140 is provided on the second joint groove 230 on one side of the prefabricated door frame vertical plate body 210, and the prefabricated grouting port is connected to the fourth prefabricated grouting storage tank 240. The prefabricated grouting port is convenient for grouting operation, eliminating the need to drill the grouting port with a drill during grouting, improving construction efficiency, and avoiding damage to the prefabricated door frame vertical plate caused by drilling.

[0073] Example 7: Please refer to Fig. 20 Several baffles 150 are arranged in the prefabricated slurry storage tank on the opposite side of the L-shaped notch 211 along the height direction, and the height of the baffles is less than the depth of the prefabricated slurry storage tank. The design of the baffles has the following advantages:

[0074] 1. When the grouting process is actually adopted, the mortar is pressure-injected upward from the grouting port at the lower end. After the grouting is completed, the grouting head is pulled out and the grouting port is sealed. During the time from pulling out the grouting head to sealing the grouting port, the mortar will flow back downward along the slurry storage channel. Once the mortar flows back too fast, an empty section will appear at the upper end of the slurry storage channel. The multiple baffles of this design increase the resistance of the mortar backflow and slow down the backflow speed, thereby reducing the phenomenon of the mortar empty section at the upper end of the slurry storage channel.

[0075] 2. Since the mortar shrinks and sinks to a certain extent during the solidification process, the design of segmented barriers can reduce the phenomenon of large empty sections on the top of the mortar storage channel caused by the shrinkage and sinking of the mortar;

[0076] 3. At the same time, it also strengthens the prefabricated mortar storage tank of the prefabricated door frame vertical plate; after the mortar in the prefabricated mortar storage tank is cured, this partition is equivalent to the internal reinforcement inserted into the secondary connection body, which improves the firmness of the connection between the prefabricated door frame vertical plate and the adjacent internal partition wall strips.

[0077] Example 8: Please refer to Fig.21 The prefabricated door frame vertical plate body on the L-shaped notch side is a solid structure; the prefabricated door frame vertical plate body on the other side of the L-shaped notch has a center hole prefabricated in the height direction. The design of the center hole further reduces the weight of the door frame vertical plate, and at the same time, pipes and wires can be passed through the center hole, which is conducive to the layout of pipelines near the door opening.

[0078] The present invention also discloses an inner partition wall with a door opening, comprising a wall body and a door opening formed by splicing inner partition wall strips 400, wherein the door opening is built close to the inner wall or the structural column, and the door opening adopts the door opening structure of any of the above-mentioned embodiments, see Fig. 22 .

[0079] During actual construction, the door opening structure of the present invention can be installed by using a grouting method or a grouting process.

[0080] In actual construction, the grouting process is used to illustrate the construction. Specifically, it includes the following steps:

[0081] Step 1: Lay out and install prefabricated door frame panels: Measure and lay out the lines on site according to the construction drawings, and mark the location for installing the door opening. Put up two prefabricated door frame panels according to the size of the door opening, and align and level them. After ensuring that the two prefabricated door frame panels are in the same vertical plane as the wall, install and fix the two prefabricated door frame panels.

[0082] Step 2: Install the prefabricated door headboard: insert the prefabricated door headboard into the L-shaped notches of the two corresponding prefabricated door frame uprights, align and level them, ensure that the prefabricated door headboard and the two prefabricated door frame uprights are in the same vertical plane, and then cap and fix the top of the prefabricated door headboard;

[0083] Step 3, grouting connection: grouting is performed in the grouting channel formed by splicing the grouting groove of the prefabricated door head plate and the grouting grooves at the L-shaped notches of the two prefabricated door frame vertical plates by using the grouting process; the mortar is densely filled in the entire grouting channel, and the secondary connector with an internal plug function formed after the mortar is cured for 5 to 7 days connects the prefabricated door head plate and the prefabricated door frame vertical plate;

[0084] Step 4: Edge sealing and leveling: The joint grooves on the edges of the prefabricated door head panels are joined with the joint grooves on the edges of the L-shaped notches of the two prefabricated door frame vertical panels to form an anti-crack edge sealing groove; mesh cloth and anti-crack mortar are laid in the anti-crack edge sealing groove; after the anti-crack mortar solidifies, an anti-crack connector is formed in the anti-crack edge sealing groove; at this point, the installation of the inner partition wall door opening is completed.

[0085] During actual construction, the door opening structure of the present invention can be constructed by using a grouting process, thereby improving work efficiency and reducing labor intensity.

[0086] In summary, since the prefabricated door head panel of the present invention is prefabricated in one piece with the door head and the door frame connecting part, the existing door opening structure avoids splicing the door head panel at the corner position of the door opening where cracks are most likely to occur; the upper part of the above-mentioned prefabricated door frame vertical plate body is provided with an L-shaped notch for placing the prefabricated door head panel, which is convenient for the staggered bite connection between the prefabricated door head panel and the prefabricated door frame vertical plate, and improves the connection firmness between the prefabricated door head panel and the prefabricated door frame vertical plate; the prefabricated door head panel and the prefabricated door frame vertical plate are provided with prefabricated grouting grooves and seam grooves on the outer sides, the prefabricated door head panel is inserted into the L-shaped notches of the corresponding two prefabricated door frame vertical plates to form a door opening, the prefabricated grouting grooves at the joint are densely filled with mortar to form a secondary connector with an internal bolt effect, and mesh cloth and anti-cracking mortar are laid in the seam grooves at the edges of the splicing seams to form an anti-cracking connector. The prefabricated door head panel and the prefabricated door frame vertical panel are firmly spliced ​​from the inside to the outside to form a door opening through the above-mentioned secondary connectors and anti-cracking connectors. Such a door opening structure has strong resistance and achieves the purpose of preventing cracking. After assembly, there is no need to make another layer of mesh cloth and anti-cracking mortar on the large area of ​​the overall wall, which truly achieves no plastering and no cracking; at the same time, it improves construction efficiency, reduces construction costs, and reduces labor intensity.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crack-proof stripboard inner partition wall door opening structure, comprising a prefabricated door head board and two prefabricated door frame vertical boards, characterized in that: The prefabricated door head plate comprises a prefabricated door head plate body (110); the prefabricated door head plate body (110) comprises a door head portion (111) and a door frame connecting portion (112); the door head portion (111) and the door frame connecting portion (112) are prefabricated as one piece, wherein two door frame connecting portions (112) are provided and are mirror-symmetrical below the prefabricated door head plate, and the distance between the two door frame connecting portions (112) is equal to the width of the reserved door opening; first seam grooves (113) are provided on the outer edges of the prefabricated door head plate body; first prefabricated slurry storage grooves (114) are provided on both sides of the prefabricated door head plate body, and a second prefabricated slurry storage groove (115) connected to the first prefabricated slurry storage groove (114) is provided on the lower end surface of the door frame connecting portion (112); The prefabricated door frame vertical plate comprises a prefabricated door frame vertical plate body (210); an L-shaped notch (211) for placing a prefabricated door head plate is provided on the upper part of the prefabricated door frame vertical plate body, and a third prefabricated mortar storage groove (220) is provided on the inner side surface of the L-shaped notch along the height direction and the horizontal direction; a fourth prefabricated mortar storage groove (240) is provided on the side surface of the prefabricated door frame vertical plate body opposite to the L-shaped notch along the height direction; and second joint grooves (230) are provided on the edges of the prefabricated door frame vertical plate body; The prefabricated door head plate is inserted into the L-shaped notches (211) of two corresponding prefabricated door frame upright plates to form a door opening; a mortar storage channel is formed between the prefabricated door head plate and the L-shaped notches (211) of the prefabricated door frame upright plates; the mortar is densely filled in the mortar storage channel for connection, and a secondary connection body (311) is formed after the mortar is cured; The joint groove at the edge of the prefabricated door head plate is joined with the joint groove at the edge of the L-shaped notch of the prefabricated door frame vertical plate body on the corresponding side to form an anti-crack edge sealing groove; a mesh cloth and anti-crack mortar are laid in the anti-crack edge sealing groove to form an anti-crack connector (321).

2. The anti-cracking strip board inner partition wall door opening structure according to claim 1 is characterized by: The prefabricated door head plate body (110) is pre-embedded with steel bars (116) and / or the prefabricated door frame upright plate body (210) is pre-embedded with steel bars (212).

3. The anti-cracking strip board inner partition wall door opening structure according to claim 2 is characterized in that: The steel bars embedded in the door frame connection part (112) of the prefabricated door head panel body extend out of the lower end surface of the door frame connection part; corresponding to the above-extended steel bars, a first steel bar insertion sleeve (213) is embedded in the prefabricated door frame vertical plate body, and the steel bars extending from the lower end of the door frame connection part are inserted into the first steel bar insertion sleeve (213) of the prefabricated door frame vertical plate body.

4. The anti-cracking strip board inner partition wall door opening structure according to claim 1 is characterized in that: A second steel bar insert sleeve (117) is embedded in the door frame connection portion (112) of the prefabricated door head panel body; a first steel bar insert sleeve (213) is embedded in the prefabricated door frame vertical panel body at a position corresponding to the second steel bar insert sleeve (117) of the prefabricated door head panel body; and a steel bar component (214) is inserted in the first steel bar insert sleeve (213) of the prefabricated door head panel body and the first steel bar insert sleeve (213) of the prefabricated door frame vertical panel body to connect them.

5. The anti-cracking strip board inner partition wall door opening structure according to claim 1 is characterized in that: A plurality of baffles (150) are integrally prefabricated in the prefabricated slurry storage tank on the opposite side of the L-shaped notch (211) along the height direction, and the height of the baffles is less than the depth of the prefabricated slurry storage tank.

6. The anti-cracking strip board inner partition wall door opening structure according to claim 1 is characterized in that: A fifth prefabricated mortar storage tank (250) is provided on the upper end surface of the door head (111) of the prefabricated door head panel body and / or a sixth prefabricated mortar storage tank is provided on the upper end surface of the prefabricated door frame vertical panel body (210).

7. The anti-cracking strip board inner partition wall door opening structure according to claim 6 is characterized in that: The width of the slot openings of the first to sixth prefabricated slurry storage tanks is greater than the width of the slot bottom of the prefabricated slurry storage tanks.

8. The anti-cracking strip board inner partition wall door opening structure according to claim 1 is characterized in that: A prefabricated grouting port (140) is provided on the second joint groove (230) on one side of the prefabricated door frame vertical plate body (210), and the prefabricated grouting port is communicated with the fourth prefabricated grouting storage tank (240).

9. The anti-cracking strip board inner partition wall door opening structure according to claim 1 is characterized by: The prefabricated door frame upright plate body on the L-shaped notch side is a solid structure; the prefabricated door frame upright plate body on the other side of the L-shaped notch is prefabricated with a center hole in the height direction.

10. An inner partition wall with a door opening, comprising a wall body and a door opening formed by splicing inner partition wall strips, characterized in that: The door opening adopts the door opening structure described in any one of claims 1 to 9 above.

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