Prefabricated building wall and installation method thereof

Abstract

A prefabricated building wall and its installation method are disclosed. The wall includes two prefabricated wall panels and a corner load-bearing column. The two ends of the corner load-bearing column abut against the side walls of the two prefabricated wall panels. The corner load-bearing column includes an L-shaped column and a rotating support column. Both the L-shaped column and the rotating support column are fixedly mounted on a base. The rotating support column is fixedly embedded inside the L-shaped column. Multiple connecting rods are rotatably mounted on the rotating support column. Connecting grooves adapted to the connecting rods are fixedly provided on both the L-shaped column and the prefabricated wall panels. The connecting rods are intermittently inserted into the connecting grooves on the prefabricated wall panels at both ends. A self-locking mechanism is also fixedly provided between all the connecting rods on the same side. By prefabricating multiple connecting rods and the rotating support column to achieve a mortise and tenon connection, disassembly is convenient. The self-locking mechanism strengthens the overall integrity of the two components and reduces stress concentration.

Description

Technical Field

[0001] This application relates to the field of prefabricated construction technology, and more specifically, to a prefabricated building wall and its installation method. Background Technology

[0002] Prefabricated construction is a modern construction method characterized by the prefabrication of components (such as walls, floor slabs, beams, and columns) in factories, followed by on-site assembly. Compared to traditional construction methods, prefabricated construction offers advantages such as faster construction speed, reduced on-site workload, controllable quality, and energy efficiency. With the development of industrialized and intelligent construction, prefabricated construction has gained widespread application.

[0003] In existing technologies, prefabricated buildings are mostly used for temporary public facilities, such as schools, hospitals, and warehouses during post-disaster reconstruction or pandemics, or for temporary exhibition halls or stations. These temporary buildings typically have limited site conditions and relatively shallow foundation excavation depths. When ground settlement occurs, different locations on the walls of prefabricated buildings experience varying degrees of settlement, causing stress concentration at wall joints, leading to cracks and even the risk of collapse. To enhance the overall stability of the walls and reduce stress concentration at wall joints, architects usually reinforce these joints. For example, multiple embedded steel bars are staggered on the sides of the two walls to be connected. After assembling formwork around the embedded steel bars, concrete is poured to encase them. Once the concrete has solidified, a reinforced concrete slab connects the prefabricated walls on both sides, increasing the stress that the wall joints can withstand and reducing the likelihood of potential problems such as cracks. However, this type of connection method also makes it difficult to separate two walls connected by concrete slabs. Demolition requires breaking the concrete slabs, which damages the precast walls and increases the difficulty of demolition. All of these factors indirectly increase the cost of using such buildings.

[0004] Therefore, it is necessary for the inventors to design a new type of prefabricated building wall and its installation method to overcome the above problems. Summary of the Invention

[0005] The main purpose of this application is to provide a prefabricated building wall and its installation method to solve the problem in related technologies that the walls are difficult to separate after connection, thus increasing the cost of building use.

[0006] To achieve the above objectives, in a first aspect, this application provides a prefabricated building wall, comprising two prefabricated wall panels and a corner load-bearing column, wherein the two end faces of the corner load-bearing column respectively abut against the side walls of the two prefabricated wall panels, wherein:

[0007] The corner load-bearing column includes an L-shaped column and a rotating support column. Both the L-shaped column and the rotating support column are fixedly mounted on the base. The rotating support column is fixedly embedded in the inner side of the L-shaped column. Multiple connecting rods are rotatably mounted on the rotating support column. Both the L-shaped column and the precast wall panel are fixedly provided with connecting grooves that are adapted to the connecting rods.

[0008] The connecting rods are intermittently inserted into the connecting grooves on the precast wall panels at both ends, and a self-locking mechanism is also fixedly provided between all the connecting rods on the same side;

[0009] It also includes a limiting member, which is fixedly installed at the inner corner of the corner load-bearing column, and the two ends of the limiting member abut against the two inner sides of the corner of the corner load-bearing column.

[0010] Preferably, an L-shaped opening groove is provided in the middle of the inner side of the L-shaped column, the rotating support column is inserted into the L-shaped opening groove, and the connecting rod is rotatably disposed in the L-shaped opening groove.

[0011] Preferably, a plurality of limiting protrusions are fixedly provided on the rotating support column, and the end of the connecting rod has an annular sleeve, which is sleeved on the rotating support column, and the bottom of the annular sleeve contacts the top of one of the limiting protrusions.

[0012] Preferably, the limiting member includes a fan-shaped column, the bottom of which is fixedly connected to the base, and the two end faces of which abut against the two inner sides of the corner of the corner load-bearing column.

[0013] Preferably, it also includes a decorative panel, which is fixedly installed on the inner side of the corner load-bearing column, and the inner side of the decorative panel is in contact with the inner sides of the two prefabricated wall panels and the arc surface of the fan-shaped column.

[0014] Preferably, pressure plates are fixedly installed on the outer sides of both ends of the L-shaped column, and the inner side of the pressure plate abuts against the outer side of the precast wall panel.

[0015] Preferably, both the rotating support column and the limiting protrusion are made of metal and are integrally formed.

[0016] Preferably, the self-locking mechanism includes an arc-shaped groove, a rod, and a through hole. The arc-shaped groove is formed through the precast wall panel with the axis of the rotating support column as its center, and the width of the arc-shaped groove is equal to the diameter of the rod. The through hole is formed on the connecting rod at one end away from the rotating support column, and its inner diameter is equal to the diameter of the rod. The rod is inserted into the arc-shaped groove and the through hole.

[0017] On the other hand, this application also provides a method for installing prefabricated building walls, applicable to prefabricated building walls as described above, comprising the following steps:

[0018] S100. Prefabricate the rotating support column and rotatably install multiple connecting rods on the rotating support column;

[0019] S200, pour the foundation of the prefabricated building and embed the lower end of the rotating support column in the foundation;

[0020] S300. Cast the L-shaped column, and embed both the upper and lower ends of the rotating support column into the L-shaped column.

[0021] S400. Hoist the two precast wall panels to the position opposite to the corner load-bearing column and fix them. Then, rotate the connecting rods from top to bottom and insert them into the connecting grooves on the precast wall panels in an intermittent manner.

[0022] S500, Insert the insert rod into the arc-shaped groove, and finely adjust the position of the connecting rod so that the insert rod passes through the through holes on all the connecting rods on this side;

[0023] S600. Install the limiting member on the inside of the corner load-bearing column to prevent the connecting rod from coming out of the connecting groove due to impact.

[0024] Preferably, step S300 further includes:

[0025] Rotate all the connecting rods to the angle bisector of the inner corner of the wall, then build a steel reinforcement cage above the foundation, and install a template on the outside of the steel reinforcement cage so that the top and bottom of the rotating support column pass through the template. After the template is installed, pour concrete into the template. After the concrete solidifies, the L-shaped column is formed. During the pouring of the L-shaped column, the upper and lower ends of the rotating support column are embedded in the L-shaped column, and the connecting groove is formed on the L-shaped column by the template.

[0026] The prefabricated building wall and its installation method provided by this invention have the following advantages compared with the prior art:

[0027] 1. By prefabricating multiple connecting rods and rotating support columns to make them rotatably connected, the connecting rods are inserted into the connecting grooves on the prefabricated wall panels and L-shaped columns after rotation, realizing the mortise and tenon connection between the prefabricated wall panels and the corner load-bearing columns. Disassembly is convenient. The wall panels can be recycled by simply turning the connecting rods out of the connecting grooves. In addition, the design of the self-locking mechanism allows the connecting rods to better transfer the stress of the prefabricated wall panels to the corner load-bearing columns, strengthening the integrity of the two and reducing stress concentration.

[0028] Second, the presence of the arc groove allows for adjustment of the insertion holes on the connecting rods within a certain range when inserting the rods, avoiding situations where the rods cannot be inserted due to production errors. The rods connect the connecting rods on the same side into a whole. When all the connecting rods on that side crush the contact parts of the connecting grooves on the L-shaped column, all the connecting rods are suspended and cannot transfer stress to the L-shaped column. If foundation settlement occurs, stress concentration will occur between the end face of the precast wall panel and the end face of the L-shaped column. This stress will be transferred to the rods through the arc surface of the arc groove. The rods are in line contact with the arc groove, and this stress will cause the rods to slide on the inner wall of the arc groove, thereby causing the suspended connecting rods to slide until at least one connecting rod is rotated to a position where it is in close contact with the upper or lower end face of the connecting groove again. At this time, the stress of the precast wall panel can be transferred to the inner wall of the connecting groove on the L-shaped column, reducing the stress concentration on the L-shaped column. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0030] Figure 1 This is an overall structural diagram of the present invention;

[0031] Figure 2 This is a diagram of the internal structure of the corner load-bearing column of the present invention;

[0032] Figure 3 This is a structural diagram of the connecting rod of the present invention;

[0033] Figure 4 This is an overall structural diagram of the rotating support rod of the present invention;

[0034] Figure 5 This is the present invention. Figure 1 Enlarged view of the structure at point A in the middle.

[0035] Among them: 1. Precast wall panel; 2. Corner load-bearing column; 201. L-shaped column; 202. Rotating support column; 3. Connecting rod; 4. Connecting groove; 5. L-shaped opening groove; 6. Limiting protrusion; 7. Annular sleeve; 8. Fan-shaped column; 9. Decorative panel; 10. Pressure plate; 11. Arc groove; 12. Insert rod; 13. Through hole; 14. Foundation. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0037] It should be noted that the terms "first," "second," etc., used in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0040] In addition, the term "multiple" should mean two or more.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] Example 1:

[0043] like Figures 1 to 5As shown, a prefabricated building wall includes two prefabricated wall panels 1 and a corner load-bearing column 2. The two end faces of the corner load-bearing column 2 abut against the side walls of the two prefabricated wall panels 1, respectively. The corner load-bearing column 2 includes an L-shaped column 201 and a rotating support column 202. Both the L-shaped column 201 and the rotating support column 202 are fixedly mounted on a base. The rotating support column 202 is fixedly embedded inside the L-shaped column 201, and a rotating support column 202 is rotatably mounted on it. There are multiple connecting rods 3. The L-shaped column 201 and the precast wall panel 1 are both fixedly provided with connecting grooves 4 that are adapted to the connecting rods 3. The connecting rods 3 are inserted into the connecting grooves 4 on the precast wall panels 1 at both ends at intervals. A self-locking mechanism is also fixedly provided between all the connecting rods 3 on the same side. It also includes a limiting member. The limiting member is fixedly provided at the inner corner of the corner load-bearing column 2. The two ends of the limiting member abut against the two sides of the inner corner of the corner load-bearing column 2, respectively.

[0044] Specifically, a corner load-bearing column 2 is installed to support the weight of the building's top floor slab. The two ends of the L-shaped column 201 are respectively used to connect with two precast wall panels 1. These precast wall panels 1 can be concrete wall panels or multi-layer composite precast panels. Regardless of the material, precast connecting grooves 4 are required on their inner sides. The rotating support column 202 also supports the weight of the building's top floor slab and can also withstand the gravity transmitted through the connecting rod 3 when the precast wall panels 1 settle. The connecting rod 3 is inserted into the connecting groove 4 on the L-shaped column and the precast wall panel 1, functioning similarly to a pin or mortise and tenon joint in a tenon-and-mortise structure. Figure 3As shown, since prefabricated walls are mostly positioned on the ground by pre-embedded positioning steel bars, they are usually installed vertically during hoisting. If a tenon and mortise structure is directly set on the side of the prefabricated wall panel 1 and the corner load-bearing column 2, the prefabricated wall panel 1 cannot move laterally and therefore cannot be connected. Here, a connecting rod 3 is used to achieve the same stress distribution function as the tenon and mortise structure. However, for application scenarios with harsh conditions, such as temporary buildings erected after earthquakes or floods, its occurrence... Due to the significant vibration and settlement, the connecting rod 3 will be subjected to repeated impacts or continuous pressure. Therefore, high-carbon steel, which is not easily damaged, is chosen for the connecting rod 3. Under repeated impacts or continuous pressure, it will crush the upper and lower end faces of the connecting groove 4 on the L-shaped concrete column 201, thus losing its function of transmitting the force from the precast wall panel 1 to the L-shaped column 201. The force will then be transmitted to the rotating support column 202, which can also provide stable support for the precast wall panel 1, something that a typical pin structure cannot achieve. Furthermore, to ensure that the L-shaped column 201 can fully withstand the pressure transmitted from the precast wall panel 1, when the part of the connecting groove 4 on the L-shaped column 201 that contacts the connecting rod 3 is crushed, the connecting rod 3 and the connecting groove 4 cannot maintain tight contact. At this time, a self-locking mechanism causes the connecting rod 3 to rotate slightly, thus deviating from the crushed part and re-engaging tightly with the end face of the connecting groove 4, thereby regaining the ability to withstand the pressure transmitted from the precast wall panel 1. To prevent the connecting rod 3 from slipping out of the connecting groove 4 due to vibration, pressure, or lateral impact, a limiting component is installed to limit the side wall of the connecting rod 3, preventing it from slipping out. Disassembly is relatively simple; after removing the limiting component and pulling out the insert rod 12, the connecting rod 3 can be rotated out of the connecting groove 4. The precast wall panel 1 is easy to separate and is not easily damaged. In this embodiment, multiple connecting rods 3 are prefabricated and rotatably connected to the rotating support column 202. After the connecting rod 3 rotates, it is inserted into the connecting groove 4 on the precast wall panel 1 and the L-shaped column 201, realizing the mortise and tenon connection between the precast wall panel 1 and the corner load-bearing column 2. Disassembly is convenient; the wall panel can be recycled by rotating the connecting rod 3 out of the connecting groove 4. In addition, a self-locking mechanism is designed so that the connecting rod 3 can better transfer the stress of the precast wall panel 1 to the corner load-bearing column 2, strengthening the integrity of the two and reducing stress concentration.

[0045] An L-shaped opening slot 5 is provided in the middle of the inner side of the L-shaped column 201. The rotating support column 202 is inserted into the L-shaped opening slot 5, and the connecting rod 3 is rotatably disposed in the L-shaped opening slot 5. Specifically, the shape of the opening slot is similar to that of the corner load-bearing column 2. It should be noted that the L-shaped column 201 here is only the connection shape for the right-angle connection of the two precast wall panels 1. It should be understood that, depending on the actual situation, it can also be in the shape of an obtuse angle or an acute angle, and the opening slot is also proportionally obtuse or acute, as long as the connecting rod 3 can extend out of its opening. When connecting the precast wall panels 1, the connecting rod 3 is in the state of extending outward from the opening, without interfering with the hoisting of the precast wall panels 1.

[0046] Multiple limiting protrusions 6 are fixedly provided on the rotating support column 202. The end of the connecting rod 3 has an annular sleeve 7, which is sleeved on the rotating support column 202. The bottom of the annular sleeve 7 contacts the top of one of the limiting protrusions 6. The rotating support column 202 and the limiting protrusions 6 are both made of metal and are integrally formed. Specifically, the rotating support column 202, the limiting protrusions 6, and the connecting rod 3 are preferably made of steel, which is not easily damaged as a load-bearing component, can be reused for a long time, and is durable. In use, the annular sleeve 7 rotates on the outer wall of the rotating support column 202 between two limiting protrusions 6, thereby driving the connecting rod 3 to rotate.

[0047] The limiting component includes a fan-shaped column 8, the bottom of which is fixedly connected to the base, and both ends of which abut against the two inner sides of the corner of the corner load-bearing column 2. Specifically, the fan-shaped column 8 can be installed at the inner corner of the corner load-bearing column 2 by hoisting, and is positioned by a positioning pin on the foundation 14. Its fan-shaped shape can transfer the force on the connecting rod 3 on one side to the connecting rod 3 on the other side or to the inner wall of the L-shaped column 201, so that the inner side of the connecting rod 3 is limited and cannot slide out of the limiting groove, thus ensuring the safety of the wall.

[0048] It also includes a decorative panel 9, which is fixedly installed on the inner side of the corner load-bearing column 2. The inner side of the decorative panel 9 is in contact with the inner sides of the two prefabricated wall panels 1 and the arc-shaped surface of the fan-shaped column 8. Specifically, by setting the decorative panel 9 to cover the connecting groove 4 and the connecting rod 3, the connection between the prefabricated wall panel 1 and the corner load-bearing column 2 is made more aesthetically pleasing from the inside. The decorative panel 9 can be fixed here by means of adhesive or other methods.

[0049] Pressure plates 10 are fixedly installed on the outer sides of both ends of the L-shaped column 201, and the inner side of the pressure plate 10 abuts against the outer side of the precast wall panel 1. Specifically, the pressure plate 10 can clearly show the docking position of the L-shaped column 201 and the precast wall panel 1, and at the same time, the pressure plate 10 can also limit and block the precast wall panel 1 from the outside to prevent it from sliding outward.

[0050] The self-locking mechanism includes an arc-shaped groove 11, a rod 12, and a through hole 13. The arc-shaped groove 11 is formed through the precast wall panel 1 with the axis of the rotating support column 202 as the center, and the width of the arc-shaped groove 11 is equal to the diameter of the rod 12. The through hole 13 is formed on the connecting rod 3 at one end away from the rotating support column 202, and its inner diameter is equal to the diameter of the rod 12. The rod 12 is inserted into the arc-shaped groove 11 and the through hole 13. Specifically, during the actual connection of precast wall panel 1, the positioning pins used for hoisting precast wall panel 1 and positioning it on the ground are usually pre-embedded steel bars extending upwards from the foundation 14. These pins cannot precisely guarantee accurate alignment with the holes at the bottom of the precast wall panel 1, resulting in the bottom of the precast wall panel 1 not being level. This makes it difficult for the connecting rod 3 to rotate into the connecting groove 4 on the precast wall panel 1. Therefore, when hoisting and connecting precast wall panel 1, it is not allowed to touch the ground initially, but rather the precast wall panel 1 is suspended and connected to the L-shaped column 201, allowing the connecting rod 3 to be inserted into the connecting groove 4. Since the height of the connecting rod 3 is equal to the height of the connecting groove 4, and the connecting groove 4 often has slight manufacturing errors, the connecting rod 3 stops due to friction from the top or bottom surface after entering the connecting groove 4. The existence of the arc-shaped groove 11 allows the insertion hole on the connecting rod 3 to be adjusted within a certain range when inserting the insertion rod 12, avoiding the problems caused by manufacturing errors. This results in the insertion rod 12 being unable to insert into all the connecting rods 3. The insertion rod 12 connects the connecting rods 3 on the same side into a whole. When all the connecting rods 3 on this side crush the contact part of the connecting groove 4 on the L-shaped column 201, all the connecting rods 3 are suspended and cannot transfer stress to the L-shaped column 201. If the foundation 14 settles, stress concentration will occur between the end face of the precast wall panel 1 and the end face of the L-shaped column 201. This stress will be transferred to the insertion rod 12 through the arc surface of the arc groove 11. The insertion rod 12 and the arc groove 11 are in line contact. This stress will cause the insertion rod 12 to slide on the inner wall of the arc groove 11, thereby driving the suspended connecting rods 3 to slide until at least one connecting rod 3 is rotated to a position where it is in close contact with the upper or lower end face of the connecting groove 4 again. At this time, the stress of the precast wall panel 1 can be transferred to the inner wall of the connecting groove 4 on the L-shaped column 201, reducing the stress concentration on the L-shaped column 201.

[0051] An installation method for prefabricated building walls, applied to the prefabricated building walls described above, includes the following steps:

[0052] S100. Prefabricate the rotating support column 202 and rotatably install multiple connecting rods 3 on the rotating support column 202. Specifically, the connecting rods 3 should preferably be an integral structure. If the strength requirements are met, they can also be designed as separate installations to facilitate their rotational installation with the rotating support column 202.

[0053] S200, pour the foundation 14 of the prefabricated building, and pre-embed the lower end of the rotating support column 202 in the foundation 14; specifically, the rotating support column 202 is pre-embedded in the foundation 14, which is not prone to large-scale settlement, ensuring the stability of the corner load-bearing column 2. At the same time, the weight of the prefabricated wall panel 1 can be transferred to the foundation 14 through the connecting rod 3, avoiding the collapse of the prefabricated wall panel 1. When actually pre-embedding the rotating support column 202, a plastic mold can be wrapped around the surface of the rotating support column 202 to facilitate the removal of the rotating support column 202 from the concrete foundation 14 during later disassembly.

[0054] S300: Cast the L-shaped column 201, and embed the upper and lower ends of the rotating support column 202 into the L-shaped column 201; Step S300 further includes: rotating all the connecting rods 3 to the angle bisector of the inner side of the wall corner, then constructing a steel reinforcement skeleton above the foundation 14, and installing a template on the outside of the steel reinforcement skeleton, so that the top and bottom of the rotating support column 202 pass through the template. After the template is installed, pour concrete into the template. After the concrete solidifies, the L-shaped column 201 is formed. During the casting of the L-shaped column 201, the upper and lower ends of the rotating support column 202 are embedded in the L-shaped column 201, and the template is used to make the formed L-shaped column 201 have the connecting groove 4. Specifically, compared to the traditional method of pouring concrete slabs to connect the two precast wall panels 1 after they are in place, this embodiment first pours the L-shaped column 201 and then hoists the precast wall panels 1. This construction method facilitates the installation and removal of formwork and speeds up construction. The top and bottom of the rotating support column 202 are embedded in the L-shaped column 201, making the installation of the rotating load-bearing column more stable. The connecting groove 4 here can be made directly by formwork or cast into a solid form and then cut.

[0055] S400. Hoist the two precast wall panels 1 to the position opposite to the corner load-bearing column 2 and fix them. Then, rotate the connecting rods 3 from top to bottom and insert them into the connecting grooves 4 on the precast wall panels 1. Specifically, when rotating the connecting rods 3 into the connecting grooves 4, a hoisting tool should be used to ensure that the precast wall panels 1 are suspended. After the connecting rods 3 are all in place, fill and fix the bottom of the precast wall panels 1.

[0056] S500, insert the insertion rod 12 into the arc-shaped groove 11, and fine-tune the position of the connecting rod 3 so that the insertion rod 12 passes through the through holes 13 on all the connecting rods 3 on this side; specifically, fine-tune the position of the connecting rod 3 so that the insertion rod 12 can be inserted into all the insertion holes. If it is still not possible to insert into all the insertion holes, the upper and lower end faces of the connecting groove 4 can be polished to make the range of rotation and adjustment of the connecting rod 3 larger, thereby facilitating the insertion of the insertion rod 12.

[0057] S600. Install the limiting member on the inner side of the corner load-bearing column 2 to prevent the connecting rod 3 from detaching from the connecting groove 4 due to impact. Specifically, the limiting member is also fixed after being hoisted by a lifting device.

[0058] Example 2: The difference between this example and Example 1 is that the rotating support column 202 and the limiting protrusion 6 are made of reinforced concrete, and a bearing is fixedly installed between the inner wall of the annular sleeve 7 and the rotating support column 202. Compared with Example 1, the rotating support column 202 in this example has a lower cost, but correspondingly, its stress resistance is reduced. This example can be used when the precast wall panel 1 is relatively lightweight.

[0059] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A prefabricated building wall, characterized in that: It includes two precast wall panels (1) and a corner load-bearing column (2), wherein the two end faces of the corner load-bearing column (2) abut against the side walls of the two precast wall panels (1), wherein: The corner load-bearing column (2) includes an L-shaped column (201) and a rotating support column (202). The L-shaped column (201) and the rotating support column (202) are both fixedly installed on the base. The rotating support column (202) is fixedly embedded in the inner side of the L-shaped column (201). Multiple connecting rods (3) are rotatably installed on the rotating support column (202). The L-shaped column (201) and the precast wall panel (1) are both fixedly provided with connecting grooves (4) that are compatible with the connecting rods (3). The connecting rods (3) are intermittently inserted into the connecting grooves (4) on the prefabricated wall panels (1) at both ends, and a self-locking mechanism is also fixedly provided between all the connecting rods (3) on the same side; It also includes a limiting member, which is fixedly installed at the inner corner of the corner load-bearing column (2), and the two ends of the limiting member abut against the two sides of the inner corner of the corner load-bearing column (2); The self-locking mechanism includes an arc groove (11), a rod (12), and a through hole (13). The arc groove (11) is opened through the precast wall panel (1) with the axis of the rotating support column (202) as the center, and the width of the arc groove (11) is equal to the diameter of the rod (12). The through hole (13) is opened on the connecting rod (3) at one end away from the rotating support column (202), and the inner diameter is equal to the diameter of the rod (12). The rod (12) is inserted into the arc groove (11) and the through hole (13).

2. The prefabricated building wall as described in claim 1, characterized in that: The L-shaped column (201) has an L-shaped opening groove (5) in the middle of its inner side. The rotating support column (202) is inserted into the L-shaped opening groove (5), and the connecting rod (3) is rotatably disposed in the L-shaped opening groove (5).

3. The prefabricated building wall as described in claim 1, characterized in that: The rotating support column (202) is fixedly provided with a plurality of limiting protrusions (6), and the end of the connecting rod (3) has an annular sleeve (7). The annular sleeve (7) is sleeved on the rotating support column (202), and the bottom of the annular sleeve (7) is in contact with the top of one of the limiting protrusions (6).

4. A prefabricated building wall as described in claim 1, characterized in that: The limiting component includes a fan-shaped column (8), the bottom of which is fixedly connected to the base, and the two end faces of the fan-shaped column (8) abut against the two sides of the inner corner of the corner load-bearing column (2).

5. A prefabricated building wall as described in claim 4, characterized in that: It also includes a decorative panel (9), which is fixedly installed on the inner side of the corner load-bearing column (2). The inner side of the decorative panel (9) is in contact with the inner side of the two prefabricated wall panels (1) and the arc surface of the fan-shaped column (8).

6. A prefabricated building wall as described in claim 1, characterized in that: Pressure plates (10) are fixedly installed on the outer sides of both ends of the L-shaped column (201), and the inner side of the pressure plate (10) abuts against the outer side of the precast wall panel (1).

7. A prefabricated building wall as described in claim 3, characterized in that: The rotating support column (202) and the limiting protrusion (6) are both made of metal and are integrally formed.

8. An installation method for prefabricated building walls, applied to the prefabricated building walls as described in claim 1, characterized in that: Includes the following steps: S100, prefabricate the rotating support column (202) and rotatably install multiple connecting rods (3) on the rotating support column (202); S200, pour the foundation (14) of the prefabricated building and embed the lower end of the rotating support column (202) in the foundation (14); S300, cast the L-shaped column (201) and embed both the upper and lower ends of the rotating support column (202) into the L-shaped column (201); S400. Hoist the two precast wall panels (1) to the position opposite to the corner load-bearing column (2) and fix them. Then, rotate the connecting rods (3) from top to bottom and insert them into the connecting grooves (4) on the precast wall panels (1) in turn. S500, insert the insert rod (12) into the arc groove (11) and finely adjust the position of the connecting rod (3) so that the insert rod (12) passes through the through hole (13) on all the connecting rods (3) on this side. S600. Install the limiting member on the inside of the corner load-bearing column (2) to prevent the connecting rod (3) from coming out of the connecting groove (4) due to impact.

9. The installation method of a prefabricated building wall as described in claim 8, characterized in that: Step S300 further includes: Rotate all the connecting rods (3) to the angle bisector of the inner side of the wall corner, then build a steel reinforcement skeleton above the foundation (14), and install a template on the outside of the steel reinforcement skeleton so that the top and bottom of the rotating support column (202) penetrate the template. After the template is installed, pour concrete into the template. After the concrete solidifies, the L-shaped column (201) is formed. During the pouring of the L-shaped column (201), the upper and lower ends of the rotating support column (202) are embedded in the L-shaped column (201), and the template makes the L-shaped column (201) have the connecting groove (4) after it is formed.

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