Anti-cracking device for ALC batten partition wall and construction method thereof

Abstract

The application discloses a kind of ALC batten partition wall anti-cracking device and its construction method, the device is applied to the joint of two adjacent ALC batten partition walls, including connecting piece, first fixing part, second fixing part, first expansion bolt and second expansion bolt;First expansion bolt and second expansion bolt are respectively arranged in two partition walls;Fixed hole and guide hole are formed in connecting piece;First fixing part is connected to first expansion bolt from the side of connecting piece and penetrates fixed hole;The diameter of guide hole gradually decreases from the end close to fixed hole to the end away from fixed hole;The outer diameter of second fixing part gradually increases from first end to second end;The first end of second fixing part is connected to second expansion bolt from the side of connecting piece and penetrates guide hole;The initial screwing position of second fixing part is the end away from fixed hole in guide hole, and the final penetration position is the other end. Realize that pre-stress is applied to two adjacent partition walls, effectively prevent wall joint cracking, eliminate safety hazards and ensure normal use of partition wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of partition wall construction, and particularly relates to an ALC batten partition wall anti-cracking device and a construction method thereof. BACKGROUND

[0002] ALC is the abbreviation of Autoclaved Lightweight Concrete, which is a kind of high-performance autoclaved aerated concrete. ALC board is a multi-porous lightweight concrete forming board (containing treated steel bars for reinforcement) made of fly ash (or silica sand), cement, lime, aluminum powder and other main raw materials through processes such as batching, mixing, pouring, pre-curing, cutting and autoclave curing.

[0003] ALC board has low density and high strength, and is a new type of superior enclosure building material. In recent years, it has been widely used in prefabricated buildings, especially in the outer enclosure wall and inner partition wall of prefabricated buildings, for building ALC batten partition walls. ALC batten partition wall is a partition wall formed by splicing multiple ALC battens, and there is a joint between adjacent ALC battens. In actual engineering applications, due to the short time of ALC board leaving the factory and the high water content of the board, the joint of the wall is prone to cracking during construction and subsequent use due to factors such as material shrinkage, temperature change, material properties and deformation coordination of steel structure matching, which affects the normal use of the building and poses a safety hazard. The existing ALC batten partition wall anti-cracking methods mainly include the following: 1. The joints between ALC battens are bonded by special mortar; 2. The outer side of the ALC board joint is pasted with glass fiber mesh cloth to assist in preventing cracking. However, the existing anti-cracking methods still have the following problems: the anti-cracking ability of the mortar or glass fiber mesh cloth is not strong, and when the board shrinks, the temperature and humidity change greatly, and the structure deforms, the anti-tension strength of the brittle material such as mortar and the glass fiber mesh cloth is very low, and it is difficult to control the further enlargement of the cracks. SUMMARY

[0004] The present application provides an ALC batten partition wall anti-cracking device and a construction method thereof. The purpose is to solve the problem that the joint of the ALC batten partition wall is prone to cracking in the prior art method, and the existing anti-cracking measures are difficult to effectively resist cracking, which affects the normal use of the building and causes safety hazards.

[0005] In a first aspect, the embodiments of the present application provide an ALC strip partition anti-cracking device, which is applied to the joint of two adjacent ALC strip partitions, and comprises a connecting plate, a first fixing member, a second fixing member, a first expansion bolt and a second expansion bolt; the first expansion bolt and the second expansion bolt are respectively arranged inside the two ALC strip partitions; the connecting plate is provided with a fixing hole and a guide hole; the first end of the first fixing member penetrates through the fixing hole from one side of the connecting plate and is fixedly connected to the first expansion bolt located at the other side of the connecting plate; the diameter of the guide hole gradually decreases from the end close to the fixing hole to the end far from the fixing hole; the outer diameter of the second fixing member gradually increases from the first end to the second end; the first end of the second fixing member penetrates through the guide hole from one side of the connecting plate and is fixedly connected to the second expansion bolt located at the other side of the connecting plate; the initial penetration position of the second fixing member is the end far from the fixing hole in the guide hole, and the final penetration position of the second fixing member is the end close to the fixing hole in the guide hole.

[0006] In a second aspect, the embodiments of the present application also provide an ALC strip partition anti-cracking construction method based on the ALC strip partition anti-cracking device of the first aspect, which comprises the following steps: installing the first expansion bolt and the second expansion bolt in the ALC strip partition anti-cracking device into the first expansion bolt hole and the second expansion bolt hole respectively arranged on the two adjacent ALC strip partitions; aligning the fixing hole on the connecting plate of the ALC strip partition anti-cracking device with the first expansion bolt, and penetrating the first fixing member of the ALC strip partition anti-cracking device through the fixing hole and into the first expansion bolt until the first fixing member connects the connecting plate to the ALC strip partition on which the first expansion bolt hole is arranged; aligning the end far from the fixing hole in the guide hole of the connecting plate with the second expansion bolt, and aligning the second fixing member of the ALC strip partition anti-cracking device with the second expansion bolt from the end far from the fixing hole in the guide hole; penetrating the second fixing member into the second expansion bolt until the second fixing member is located at the end close to the fixing hole in the guide hole, so that the ALC strip partition on which the first expansion bolt hole is arranged is displaced from the end close to the fixing hole in the guide hole to the end far from the fixing hole in the guide hole, and is tightly attached to the other ALC strip partition on which the second expansion bolt hole is arranged.

[0007] Based on the above structure and construction method provided in the embodiments of the present application, the anti-cracking device for the ALC batten partition wall provided in the embodiments of the present application is provided with the guide hole with the gradually reduced aperture from one end to the other end and the second fixing member with the gradually increased outer diameter from the first end to the second end, when the second fixing member is penetrated into from the end with the smaller aperture of the guide hole, the outer diameter of the second fixing member in contact with the inner wall of the guide hole gradually changes, thereby the second fixing member is gradually pressed to the side with the larger aperture of the guide hole, thereby the ALC batten partition wall on the corresponding side of the guide hole is pulled to the adjacent ALC batten partition wall on the other side, while ensuring the connection stability, the pre-stress is applied to the two adjacent partition walls, the cracking of the joint between the two adjacent partition walls is effectively prevented, the safety hazard is eliminated and the normal use of the partition wall is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0009] Figure 1 The exploded schematic structural diagram of the anti-cracking device for the ALC batten partition wall provided in the embodiments of the present application;

[0010] Figure 2 The schematic structural diagram of the connecting piece and the fixing ring in the anti-cracking device for the ALC batten partition wall provided in the embodiments of the present application;

[0011] Figure 3 The schematic structural diagram of the second fixing member in the anti-cracking device for the ALC batten partition wall provided in the embodiments of the present application;

[0012] Figure 4 The schematic flow chart of the anti-cracking construction method for the ALC batten partition wall provided in the embodiments of the present application;

[0013] Figure 5 The sub-flowchart of the anti-cracking construction method for the ALC batten partition wall provided in the embodiments of the present application;

[0014] Figure 6 The first application scenario schematic diagram of the anti-cracking construction method for the ALC batten partition wall provided in the embodiments of the present application;

[0015] Figure 7 The enlarged schematic diagram of the frame A in the first application scenario schematic diagram of the anti-cracking construction method for the ALC batten partition wall provided in the embodiments of the present application;

[0016] Figure 8The second application scene schematic diagram of the ALC batten partition wall anti-cracking construction method is provided for the embodiment of the application.

[0017] Figure 9 The corresponding position schematic diagram of the guide hole of the connecting piece and the second expansion bolt hole on the ALC batten partition wall in the ALC batten partition wall anti-cracking construction method is provided for the embodiment of the application.

[0018] Specifically, the reference signs are as follows:

[0019] 10, ALC batten partition wall anti-cracking device; 11, connecting piece; 111, fixing hole; 112, guide hole; 113, first flange; 114, second flange; 115, third flange; 12, first fixing piece; 13, second fixing piece; 131, through portion; 132, abutting portion; 14, first expansion bolt; 15, second expansion bolt; 16, fixing ring; 20, ALC batten partition wall; 21, first expansion bolt hole; 22, second expansion bolt hole; 23, mounting groove; 231, first mounting groove; 232, second mounting groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some of the embodiments of the application but not all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0021] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0022] It should also be understood that the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in the specification and the appended claims of the application, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should be further understood that the term "and / or" used in the specification and the appended claims of the application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0024] Please refer to Figure 1The embodiment of the present application provides a kind of ALC batten partition wall anti-cracking device 10, it is applied to the joint of two adjacent ALC batten partition wall 20, it includes connecting piece 11, first fixed part 12, second fixed part 13, first expansion bolt 14 and second expansion bolt 15;First expansion bolt 14 and second expansion bolt 15 are respectively arranged in the interior of two ALC batten partition wall 20;Connecting piece 11 is equipped with fixed hole 111 and guide hole 112;The first end of first fixed part 12 is from the side of connecting piece 11 and is fixedly connected to first expansion bolt 14 located at the other side of connecting piece 11 by penetrating fixed hole 111;The hole diameter of guide hole 112 gradually decreases from the end close to fixed hole 111 to the end away from fixed hole 111;The outer diameter of second fixed part 13 gradually increases from first end to second end;The first end of second fixed part 13 is fixedly connected to second expansion bolt 15 located at the other side of connecting piece 11 by penetrating guide hole 112 from the side of connecting piece 11;The initial penetration position of second fixed part 13 is the end away from fixed hole 111 in guide hole 112, and the final penetration position of second fixed part 13 is the end close to fixed hole 111 in guide hole 112.

[0025] In the embodiment, connecting piece 11 is the main structure of ALC batten partition wall anti-cracking device 10, which is a rigid sheet member with a certain length and thickness. For two adjacent ALC batten partition walls 20, connecting piece 11 is arranged at the joint of the two ALC batten partition walls 20, and connecting piece 11 simultaneously contacts the surfaces of the two ALC batten partition walls 20. Fixed hole 111 and guide hole 112 are provided on connecting piece 11, and fixed hole 111 and guide hole 112 are provided at two ends of connecting piece 11 respectively, in parallel. Specifically, fixed hole 111 is opposite to one of the two ALC batten partition walls 20, and guide hole 112 is opposite to the other ALC batten partition wall 20. First expansion bolt 14 is arranged on the side of fixed hole 111 facing the ALC batten partition wall 20, and first fixed part 12 penetrates into fixed hole 111 from the other side of fixed hole 111 and is connected to first expansion bolt 14. First expansion bolt 14 needs to be pre-buried in the ALC batten partition wall 20 opposite to fixed hole 111. The combination of first fixed part 12 and fixed hole 111 can fix connecting piece 11 on one of the two ALC batten partition walls 20, providing a basis for subsequent anti-cracking operation.

[0026] The guide hole 112 is opposite to another ALC strip partition wall 20, and the diameters of the two ends of the guide hole 112 are set to be different. Specifically, the diameter of the end of the guide hole 112 close to the fixed hole 111 is larger than the diameter of the end away from the fixed hole 111, and the diameter of the guide hole 112 gradually decreases from the end close to the fixed hole 111 to the end away from the fixed hole 111, that is, the guide hole 112 as a whole presents an open hole form of one end large and one end small. Correspondingly, the outer diameter of the second fixing member 13 is also set to gradually increase from the first end to the second end, wherein the first end of the second fixing member 13 is preferentially penetrated through the guide hole 112 and connected to the second expansion bolt 15. Therefore, when the second expansion bolt 15 is fixed on the ALC strip partition wall 20 opposite to the guide hole 112, the first end of the second fixing member 13 can be penetrated through the guide hole 112 from the end away from the fixed hole 111 and contacted with the second expansion bolt 15. Then, the second fixing member 13 needs to be gradually screwed into the second expansion bolt 15.

[0027] In the process of gradually screwing the second fixing member 13 into the second expansion bolt 15, the outer wall of the second fixing member 13 always abuts against the inner wall of the guide hole 112, and when the length of the first end of the second fixing member 13 penetrating through the guide hole 112 gradually increases (that is, the length of the first end penetrating into the second expansion bolt 15 gradually increases), the outer diameter corresponding to the outer wall of the second fixing member 13 abutting against the inner wall of the guide hole 112 also gradually increases. At this time, the inner diameter of the end of the guide hole 112 away from the fixed hole 111 is already smaller than the outer diameter corresponding to the outer wall of the second fixing member 13 abutting against the inner wall of the guide hole 112, the guide hole 112 will move relative to the second fixing member 13, and the position of the outer wall of the second fixing member 13 abutting against the inner wall of the guide hole 112 will gradually approach the end of the guide hole 112 close to the fixed hole 111, that is, the second fixing member 13 will gradually move from the end of the guide hole 112 with smaller diameter to the end with larger diameter relative to the guide hole 112. However, since the position of the second expansion bolt 15 is fixed, the second fixing member 13 and the second expansion bolt 15 cannot be displaced, and only the connecting piece 11 can be displaced at this time. Furthermore, the second fixing member 13 will continue to be pressed by the inner wall of the guide hole 112 in this process, thereby providing a prestress to the second expansion bolt 15 and the ALC strip partition wall 20 where the second expansion bolt 15 is located in the direction of the fixed hole 111. When the second fixing member 13 is completely installed into the second expansion bolt 15, the final penetration position thereof is the end of the guide hole 112 close to the fixed hole 111.

[0028] As can be seen, during the installation of the second fixing member 13, the second expansion bolt 15 and the second fixing member 13 are gradually pulled towards the direction of the fixing hole 111, and then the second expansion bolt 15 and the second fixing member 13 pull the ALC strip partition 20 on the side of the guide hole 112 to the ALC strip partition 20 on the side of the fixing hole 111. The setting form of the outer diameter of the second fixing member 13 and the inner diameter of the guide hole 112 makes the two adjacent ALC strip partitions 20 be prestressed after installation, the two ALC strip partitions 20 are stably connected by the connecting piece 11, and the prestress prevents the joint from cracking, which reliably ensures the stability of the ALC strip partition 20. The connecting piece 11 is made of a metal material, such as stainless steel, and has a thickness of 0.8-1 mm and a length of 25-30 mm. The first connecting member and the second connecting member can be in the form of a tapered pointed screw.

[0029] It can be understood that the shape of the fixing hole 111 can be set as a circular hole, or can also be set as an opening hole with the same shape as the guide hole 112 but the change direction of the hole diameter is opposite. The latter form of the fixing hole 111 can realize the simultaneous application of prestress in two directions.

[0030] In an embodiment, please refer to Figure 2 , the edge of the connecting piece 11 is provided with a first flange 113 protruding; the first flange 113 is arranged around the outer edge of the connecting piece 11.

[0031] In this embodiment, the edge of the connecting piece 11 is provided with a first flange 113 for strengthening the rigidity of the connecting piece 11, the first flange 113 can be integrally formed with the connecting piece 11, and the first flange 113 can be arranged around the outer edge of the connecting piece 11. By arranging the first flange 113 protruding from the surface of the connecting piece 11 around the edge, the rigidity of the connecting piece 11 can be effectively strengthened, preventing the connecting piece 11 from being broken or cracked during the process of being pulled to apply prestress, and ensuring the stability of the structure. Specifically, the first flange 113 can be arranged protruding towards the side where the first fixing member 12 and the second fixing member 13 are installed, so as to prevent the protruding profile from interfering with the surface of the ALC strip partition 20.

[0032] In an embodiment, please refer to Figure 2 , the connecting piece 11 is provided with a second flange 114 and a third flange 115 protruding; the second flange 114 is arranged around the edge of the fixing hole 111; the third flange 115 is arranged around the edge of the guide hole 112.

[0033] In the embodiment, the second flange 114 and the third flange 115 are respectively arranged around the edges of the fixing hole 111 and the guide hole 112, and the second flange 114 and the third flange 115 are respectively arranged protruding towards the direction in which the first fixing member 12 and the second fixing member 13 are installed. The second flange 114 is arranged around the edge of the fixing hole 111, which can effectively prevent the fixing hole 111 from being torn by the first fixing member 12 during the process of pulling the connecting sheet 11; similarly, the third flange 115 is arranged around the edge of the guide hole 112, which can effectively prevent the guide hole 112 from being torn by the second fixing member 13. The second flange 114 and the third flange 115 respectively effectively enhance the edge stiffness of the fixing hole 111 and the guide hole 112.

[0034] In an embodiment, referring to Figure 2 , the ALC strip partition anti-cracking device 10 further comprises a fixing ring 16; the inner contour of the fixing ring 16 is matched with the outer contour of the third flange 115; and the fixing ring 16 is sleeved on the outer side of the third flange 115.

[0035] In the embodiment, the fixing ring 16 can be in the form of tool steel, the inner contour of which is matched with the outer contour of the third flange 115, and then the fixing ring 16 can be sleeved on the outer side of the third flange 115. Since the outer side of the third flange 115 is sleeved with the rigid fixing ring 16, when the guide hole 112 is applied with a pre-stress, the fixing ring 16 can effectively clamp the third flange 115, prevent the guide hole 112 from being twisted and deformed, and ensure the stability of the structure. In addition, another fixing sleeve corresponding to the outer contour of the second flange 114 can also be sleeved on the outer side of the second flange 114. It can be understood that the fixing ring 16 also needs to be arranged in a structure form in which the inner diameter gradually decreases from one end to the other end, so as to realize smooth sleeving.

[0036] In an embodiment, referring to Figure 3 , the second fixing member 13 comprises a penetrating portion 131 at the first end and an abutting portion 132 at the second end; the outer diameter of the abutting portion 132 is greater than the outer diameter of the penetrating portion 131; the penetrating portion 131 is connected to the second expansion bolt 15; and the abutting portion 132 abuts to the third flange 115 and the fixing ring 16 at the end thereof towards the connecting sheet 11.

[0037] In this embodiment, the second fastener 13 includes a through portion 131 at the first end and an abutment portion 132 at the second end. The through portion 131 is the part that passes through the guide hole 112 and connects to the interior of the second expansion bolt 15. When the through portion 131 is fully connected into the second expansion bolt 15, the through portion 131 is located at the end of the guide hole 112 near the fixing hole 111. At this time, the abutment portion 132, whose outer diameter is larger than that of the through portion 131, can no longer pass through the guide hole 112. Furthermore, the end of the abutment portion 132 near the through portion 131 (that is, the end facing the connecting piece 11) abuts against the third flange 115 and the fixing ring 16. While the abutment portion 132 fixes and presses the connecting piece 11 onto the ALC strip partition wall 20, it also fixes and presses the fixing ring 16 onto the connecting piece 11, ensuring the overall structural rigidity and connection stability of the ALC strip partition wall anti-cracking device 10. The first fastener 12 can also be configured with the same structural form as the second fastener 13.

[0038] Please see Figures 4-9 ,like Figure 4 As shown, this embodiment of the invention also provides a method for preventing cracking of ALC strip partition walls, applied to the ALC strip partition wall anti-cracking device 10 described above. The method includes steps S110-S140:

[0039] S110. Install the first expansion bolt and the second expansion bolt in the ALC panel partition wall anti-cracking device 10 into the first expansion bolt hole and the second expansion bolt hole located on two adjacent ALC panel partition walls, respectively.

[0040] In this embodiment, as Figures 6-8 As shown, two adjacent ALC panel partitions 20 are respectively provided with a first expansion bolt hole 21 and a second expansion bolt hole 22. The position of the first expansion bolt hole 21 corresponds to the fixing hole 111 on the connecting piece 11, and the second expansion bolt hole 22 corresponds to the end of the guide hole 112 on the connecting piece 11 that is away from the connecting piece 11. The first expansion bolt 14 and the second expansion bolt 15 need to be installed into the first expansion bolt hole 21 and the second expansion bolt hole 22 respectively. The outer side of the first expansion bolt 14 and the second expansion bolt 15 are provided with raised textures to ensure friction with the inner wall of the first expansion bolt hole 21 or the second expansion bolt hole 22 and prevent them from falling off. The first expansion bolt 14 and the second expansion bolt 15 need to be made of rigid materials such as metal, otherwise effective prestress cannot be generated.

[0041] In one embodiment, such as Figure 5 As shown, steps S210-S230 may be further included before step S110:

[0042] S210, a mounting groove is formed at the joint of two adjacent ALC strip partition walls; wherein the mounting groove is used for accommodating the ALC strip partition wall anti-cracking device 10;

[0043] S220, a first expansion bolt hole is formed at one end of one of the ALC strip partition walls in the mounting groove; wherein the first expansion bolt hole is adapted to the first expansion bolt;

[0044] S230, a second expansion bolt hole is formed at one end of the other ALC strip partition wall in the mounting groove; wherein the second expansion bolt hole is adapted to the second expansion bolt, and the center of the second expansion bolt hole is opposite to the end of the guide hole away from the fixed hole.

[0045] In the embodiment, a mounting groove 23 is formed at the joint of two adjacent ALC strip partition walls 20 in advance, the inner contour of the mounting groove 23 is adapted to the outer contour of the connecting piece 11, the connecting piece 11 can be accommodated in the mounting groove 23, the installation position is determined and the sliding is prevented. The mounting groove 23 is actually divided into two parts, one part is located on one of the ALC strip partition walls 20, and the other part is located on the other ALC strip partition wall 20, the two parts are separated by the joint at the joint of the two ALC strip partition walls 20. The total length of the two parts should be greater than the length of the connecting piece 11, so that the displacement of the connecting piece 11 can be smoothly realized. Then, the first expansion bolt hole 21 and the second expansion bolt hole 22 are formed in the mounting groove 23, the first expansion bolt hole 21 is formed in the part of the mounting groove 23 on the ALC strip partition wall 20 corresponding to the fixed hole 111, and the second expansion bolt hole 22 is formed in the part of the mounting groove 23 on the ALC strip partition wall 20 corresponding to the guide hole 112. Specifically, the first expansion bolt hole 21 and the second expansion bolt hole 22 can be formed on the two ALC strip partition walls 20 by using an impact drill bit combined with a positioning mold, and the depth of the first expansion bolt hole 21 and the second expansion bolt hole 22 is ensured to correspond to the first expansion bolt 14 and the second expansion bolt 15 by using the clamping scale of the impact drill. The first expansion bolt 14 and the second expansion bolt 15 can be expansion bolts of the same specification, such as expansion bolts with a diameter of 10 mm and the same length, at this time, the depths of the first expansion bolt hole 21 and the second expansion bolt hole 22 can be set to the same depth, and the depth range is 50-60 mm. It should be noted that, as shown in the figure, the center of the second expansion bolt hole 22 needs to be aligned with the end of the guide hole 112 away from the fixed hole 111, so as to ensure that the initial installation position of the second fixed part 13 is correct. Figure 9

[0046] In an embodiment, step S210 can specifically include:

[0047] ​A first mounting groove and a second mounting groove are made at the junction of two adjacent ALC panel partitions; wherein, there is a first distance between the first mounting groove and the second mounting groove.

[0048] In this embodiment, as Figure 6 As shown, the first mounting groove 231 and the second mounting groove 232 are respectively formed at different positions at the junction of the two ALC panel partitions 20, such as at different heights, and the first mounting groove 231 and the second mounting groove 232 are separated by a first distance. Therefore, an independent ALC panel partition anti-cracking device 10 can be installed in the first mounting groove 231 and the second mounting groove 232 respectively, so as to simultaneously apply prestress to the ALC panel partition 20 from two different positions, further ensuring the anti-cracking effect. Meanwhile, as... Figure 8 As shown, if there are multiple ALC panel partitions 20 connected sequentially, a first mounting groove 231 and a second mounting groove 232 can be opened at adjacent joints on opposite surfaces of the partition. For example, at the joint between the first and second ALC panel partitions 20, the first mounting groove 231 and the second mounting groove 232 are opened on the front of the first and second ALC panel partitions 20; at the joint between the second and third ALC panel partitions 20, the first mounting groove 231 and the second mounting groove 232 are opened on the reverse side of the second and third ALC panel partitions 20; at the joint between the third and fourth ALC panel partitions 20, the first mounting groove 231 and the second mounting groove 232 are opened on the front of the ALC panel partition 20. By alternately installing ALC panel anti-cracking devices 10 on the front and back sides at the joints of multiple ALC panel partition walls 20, the uniform distribution of prestress can be ensured, further improving the stability of the structure.

[0049] In an embodiment, the connecting piece 11 is provided with a second flange 114 and a third flange 115; the second flange 114 is arranged around the edge of the fixing hole 111; the third flange 115 is arranged around the edge of the guide hole 112; the ALC strip partition wall anti-cracking device 10 further comprises a fixing ring 16; the inner contour of the fixing ring 16 is matched with the outer contour of the third flange 115; the fixing ring 16 is sleeved on the outside of the third flange 115; the second fixing member 13 comprises a penetrating portion 131 at the first end and an abutting portion 132 at the second end; the outer diameter of the abutting portion 132 is greater than the outer diameter of the penetrating portion 131; the penetrating portion 131 is connected to the second expansion bolt 15; one end of the abutting portion 132 towards the connecting piece 11 abuts to the third flange 115 and the fixing ring 16. At this time, the opening depth of the installation groove mentioned in steps S210-S230 is greater than or equal to the sum of the thickness of the connecting piece and the thickness of the abutting portion.

[0050] In the embodiment, the opening depth of the installation groove 23 can be greater than or equal to the thickness of the connecting piece 11, so that the connecting piece 11 can be embedded in the installation groove 23, and after installation, the connecting piece 11 is prevented from protruding from the surface of the ALC strip partition wall 20, so as to maintain the flatness of the wall surface, and then the surface of the ALC strip partition wall 20 can be directly putty without plastering. Specifically, the installation groove 23 can be opened and chiseled on the ALC strip partition wall 20 using a sander, and then the surface of the ALC strip partition wall 20 is directly putty to form a flat surface.

[0051] S120, align the fixing hole on the connecting piece in the ALC strip partition wall anti-cracking device 10 with the first expansion bolt, and screw the first fixing member in the ALC strip partition wall anti-cracking device 10 through the fixing hole into the first expansion bolt until the first fixing member connects the connecting piece to the ALC strip partition wall where the first expansion bolt hole is opened.

[0052] When the first expansion bolt 14 and the second expansion bolt 15 are installed in place, the fixing hole 111 on the connecting piece 11 can be aligned with the opening on the first expansion bolt 14, and the first end of the first fixing member 12 can be passed from one side of the fixing hole 111 and connected to the first expansion bolt 14. Then the first fixing member 12 can be screwed into the first expansion bolt 14 and form a stable connection with the first expansion bolt 14. When the first fixing member 12 is completely screwed into the first expansion bolt 14, the connecting piece 11 is clamped between the first fixing member 12 and the ALC strip partition wall 20 where the first expansion bolt hole 21 is located, and the connecting piece 11 is fixed on the ALC strip partition wall 20 where the first expansion bolt hole 21 is located, and the next step of applying prestress can be performed.

[0053] S130, aligning the end of the guide hole on the connecting piece away from the fixing hole with the second expansion bolt, and aligning the second fixing member in the ALC strip partition anti-cracking device 10 from the end of the guide hole away from the fixing hole with the second expansion bolt.

[0054] As shown in FIG. 1 1, due to the pre-setting of the size, the end of the guide hole 1 12 on the connecting piece 1 1 away from the fixing hole 1 1 1 will automatically align with the second expansion bolt 15 at this time, so as to ensure that the second fixing member 13 can pass through the guide hole 1 12 from the correct initial penetration position. The first end of the second fixing member 13 can be aligned with the opening on the second expansion bolt 15 from the end of the guide hole 1 12 away from the fixing hole 1 1 1 and abut against the second expansion bolt 15 at this time, so as to prepare for screwing in the second expansion bolt 15. Figure 9

[0055] S140, screwing the second fixing member into the second expansion bolt until the second fixing member is located at the end of the guide hole close to the fixing hole, so that the ALC strip partition wall with the second expansion bolt hole is displaced from the end of the guide hole away from the fixing hole towards the end of the guide hole close to the fixing hole, and is tightly attached to the other ALC strip partition wall with the first expansion bolt hole.

[0056] Subsequently, the second fixing member 13 can be gradually screwed into the second expansion bolt 15, so as to gradually pull the ALC strip partition wall 20 with the second expansion bolt hole 22 towards the side ALC strip partition wall 20 where the first expansion bolt hole 21 is located, and make the ALC strip partition wall 20 with the second expansion bolt hole 22 tightly attached to the ALC strip partition wall 20 with the first expansion bolt hole 21 and generate a pre-stress, so as to apply an effective pre-stress to the two partition walls to achieve effective anti-cracking.

[0057] In an embodiment, the connecting piece 1 1 is provided with a second flange 1 14 and a third flange 1 15 protruding therefrom; the second flange 1 14 surrounds the edge of the fixing hole 1 1 1 ; the third flange 1 15 surrounds the edge of the guide hole 1 12; the ALC strip partition anti-cracking device 10 further comprises a fixing ring 16; the inner contour of the fixing ring 16 is adapted to the outer contour of the third flange 1 15; the fixing ring 16 is sleeved on the outer side of the third flange 1 15; the second fixing member 13 comprises a penetrating portion 131 at the first end and an abutting portion 132 at the second end; the outer diameter of the abutting portion 132 is greater than the outer diameter of the penetrating portion 131 ; the penetrating portion 131 is connected to the second expansion bolt 15; the end of the abutting portion 132 towards the connecting piece 1 1 abuts against the third flange 1 15 and the fixing ring 16 at this time. At this time, step S140 specifically comprises:

[0058] ​aligning the inner profile of the fixed ring with the outer profile of the third flange, and fastening the fixed ring with the third flange;

[0059] aligning the second fixed member with the second expansion bolt, and screwing the second fixed member into the second expansion bolt until the end of the abutting part of the second fixed member abuts against the fixed ring and the third flange.

[0060] In the embodiment, the inner profile of the fixed ring 16 is first aligned with the outer profile of the third flange 115, and the fixed ring 16 is knocked into the outside of the third flange 115 to fasten the fixed ring 16 with the outside of the third flange 115, so as to prevent the deformation of the guide hole 112. Then, in the process of screwing the second fixed member 13, in order to ensure the connection effect, on the one hand, the second fixed member 13 is required to be finally located at the end of the guide hole 112 close to the fixed hole 111, and on the other hand, the end of the abutting part 132 of the second fixed member 13 close to the connecting piece 11 is required to abut against the third flange 115 and the fixed ring 16, so as to realize the stable connection between all structures.

[0061] It can be seen that, based on the above structure and the construction method provided in the embodiment of the present application, the ALC batten partition wall anti-cracking device provided in the embodiment of the present application is provided with a guide hole with a gradually decreasing hole diameter from one end to the other end and a second fixed member with a gradually increasing outer diameter from the first end to the second end. When the second fixed member is penetrated from the end of the guide hole with a smaller hole diameter, the gradually changing outer diameter of the second fixed member in contact with the inner wall of the guide hole will gradually press the second fixed member to the side of the guide hole with a larger hole diameter, thereby pulling the ALC batten partition wall on the corresponding side of the guide hole to the adjacent ALC batten partition wall on the other side, while ensuring the stability of the connection, and applying a prestress to the two adjacent partition walls, effectively preventing the cracking of the joint between the two adjacent partition walls, eliminating the safety hazard and ensuring the normal use of the partition wall. It can be understood that the sizes of the first fixed member, the second fixed member, the connecting piece, the first expansion bolt and the second expansion bolt can be determined according to experiments on the ALC batten partition wall, and the depth and opening position of the first expansion bolt hole and the second expansion bolt hole on the ALC batten partition wall and the distance from the edge of the partition wall can also be determined according to experiments, so as to prevent damage to the ALC batten partition wall during construction or to prevent the anti-cracking effect from being difficult to guarantee.

[0062] The above merely provides a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of preventing cracking in an ALC panel partition construction, characterized by, The application relates to a device for preventing cracks in the joint between two adjacent ALC strip walls, which comprises a connecting plate, a first fixing member, a second fixing member, a first expansion bolt and a second expansion bolt. The first expansion bolt and the second expansion bolt are arranged in the interiors of the two ALC strip walls respectively. The connecting plate is provided with a fixing hole and a guide hole. The first end of the first fixing member penetrates the fixing hole from one side of the connecting plate and is fixedly connected to the first expansion bolt on the other side of the connecting plate. The diameter of the guide hole gradually decreases from the end close to the fixing hole to the end far from the fixing hole. The outer diameter of the second fixing member gradually increases from the first end to the second end. The first end of the second fixing member penetrates the guide hole from one side of the connecting plate and is fixedly connected to the second expansion bolt on the other side of the connecting plate. The initial penetration position of the second fixing member is the end far from the fixing hole in the guide hole, and the final penetration position of the second fixing member is the end close to the fixing hole in the guide hole. The method comprises the following steps: installing the first expansion bolt and the second expansion bolt in the device for preventing cracks in the ALC strip walls into the first expansion bolt hole and the second expansion bolt hole in the two adjacent ALC strip walls respectively; aligning the fixing hole in the connecting plate of the device for preventing cracks in the ALC strip walls with the first expansion bolt, and penetrating the first fixing member in the device for preventing cracks in the ALC strip walls into the first expansion bolt through the fixing hole until the first fixing member connects the connecting plate to the ALC strip wall provided with the first expansion bolt hole; aligning the end far from the fixing hole in the guide hole of the connecting plate with the second expansion bolt, and aligning the second fixing member in the device for preventing cracks in the ALC strip walls with the second expansion bolt from the end far from the fixing hole in the guide hole; penetrating the second fixing member into the second expansion bolt until the second fixing member is located at the end close to the fixing hole in the guide hole, so that the ALC strip wall provided with the second expansion bolt hole is displaced from the end far from the fixing hole in the guide hole to the end close to the fixing hole in the guide hole and is tightly attached to the other ALC strip wall provided with the first expansion bolt hole.

2. The ALC panel partition anti-cracking construction method according to claim 1, characterized in that, Before the step of installing the first expansion bolt and the second expansion bolt in the device for preventing cracks in the ALC strip walls into the first expansion bolt hole and the second expansion bolt hole in the two adjacent ALC strip walls respectively, the method further comprises the following steps: opening an installation groove at the joint between the two adjacent ALC strip walls, wherein the inner contour of the installation groove is matched with the outer contour of the connecting plate; opening the first expansion bolt hole at one end of one of the ALC strip walls in the installation groove, wherein the first expansion bolt hole is matched with the first expansion bolt; opening the second expansion bolt hole at one end of the other ALC strip wall in the installation groove, wherein the second expansion bolt hole is matched with the second expansion bolt, and the center of the second expansion bolt hole is opposite to the end far from the fixing hole in the guide hole.

3. The ALC panel partition anti-cracking construction method according to claim 2, characterized in that, The installation groove is arranged at the joint of two adjacent ALC batten partition walls, comprising: A first installation groove and a second installation groove are arranged at the joint of two adjacent ALC batten partition walls; wherein a first distance exists between the first installation groove and the second installation groove.

4. The ALC panel partition anti-cracking construction method according to claim 2, characterized in that, The installation groove has a depth greater than or equal to the thickness of the connecting piece.

5. The ALC panel partition anti-cracking construction method according to claim 1, characterized in that, The connecting piece is provided with a second flange and a third flange; the second flange is arranged around the edge of the fixing hole; the third flange is arranged around the edge of the guide hole; the ALC batten partition wall anti-cracking device further comprises a fixing ring; the inner contour of the fixing ring is matched with the outer contour of the third flange; the fixing ring is sleeved on the outer side of the third flange; the second fixing member comprises a penetrating portion at the first end and an abutting portion at the second end; the outer diameter of the abutting portion is greater than the outer diameter of the penetrating portion; the penetrating portion is connected to the second expansion bolt; one end of the abutting portion towards the connecting piece abuts against the third flange and the fixing ring; the second fixing member is screwed into the second expansion bolt until the second fixing member is located at one end of the guide hole close to the fixing hole, comprising: Aligning the inner contour of the fixing ring with the outer contour of the third flange, and tightly sleeving the fixing ring and the third flange; Aligning the second fixing member with the second expansion bolt, and screwing the second fixing member into the second expansion bolt until one end of the abutting portion of the second fixing member towards the connecting piece abuts against the fixing ring and the third flange.

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