A method for installing a prefabricated reinforcement cage

Abstract

The application provides a prefabricated steel reinforcement framework mounting method, which has the following advantages: the application applies the prefabricated steel reinforcement cage technology to construct the steel reinforcement engineering, that is, the wall and floor steel reinforcement framework is assembled in a factory by using a double-bar reverse opposite-pulling locking buckle steel reinforcement device, the wall and floor steel reinforcement framework is prefabricated in a steel reinforcement processing factory, and is hoisted and transported to a construction site for installation, the double-bar reverse opposite-pulling locking buckle steel reinforcement is used to install a firm steel reinforcement framework whole for the wall and floor steel reinforcement framework which cannot be or is difficult to be bound by artificial, thereby the problems that the longitudinal and horizontal connection nodes of the prefabricated steel reinforcement cage cannot be effectively and stably installed and quickly installed are broken through, the overall stability and the earthquake resistance of the longitudinal and horizontal two-way connection nodes of the prefabricated steel reinforcement cage are equivalent to those of the on-site bound nodes, the method has the advantages of fast construction speed, strong overall stability of the structure, small amount of on-site labor, and convenient installation, and provides an effective method for the subsequent fast and firm connection of the double-piece steel reinforcement cage in a limited space.

Description

Technical Field

[0001] This invention relates to the field of precast steel cage construction technology in buildings, and more specifically, to a method for installing a precast steel cage. Background Technology

[0002] On-site construction of building structural wall panels often involves manual binding of reinforcing cages, which presents problems such as high labor input, large amount of manual work, slow installation speed, and poor working environment. If prefabricated reinforcing cages are used as a whole, they are large in size and weight, and special reinforcement measures are required to ensure the overall stability of the cage during hoisting. On-site hoisting is also difficult, making it unsuitable for the overall prefabrication of large-sized building structural reinforcing cages. If wall and slab reinforcing cages are prefabricated in sections, the additional reinforcing bars at the on-site assembly connection nodes cannot be tied due to space constraints in the reinforcing cage. They can only be connected by straight anchoring with sockets, resulting in the inability to fully tie or weld the connection nodes of the wall and slab reinforcing cage sections into a whole, thus affecting the overall stability of the reinforcing cage frame. Summary of the Invention

[0003] In view of this, the present invention proposes a method for installing a precast steel reinforcement cage, comprising:

[0004] According to the design requirements of the wall and floor slab steel reinforcement cage, they are prefabricated in the form of wall steel reinforcement cage and floor slab steel reinforcement cage respectively, and installed in both directions of cross section and longitudinal section of the prefabricated steel reinforcement cage.

[0005] The longitudinal section of the steel reinforcement cage is connected. The steel reinforcement cage to be connected is divided into a left precast steel reinforcement cage and a right precast steel reinforcement cage. A lap section is reserved at the connection of the two. The left precast steel reinforcement cage is equipped with longitudinal steel bars and horizontal transverse steel bars at the connection end, while the right connection end is only equipped with longitudinal steel bars. The right precast steel reinforcement cage is horizontally inserted into the left precast steel reinforcement cage, and the longitudinal steel bars on the left and right sides are lapped and connected to form a whole.

[0006] The wall and the base slab steel reinforcement cage are connected in the transverse direction. At the intersection of the precast steel reinforcement cage of the wall and the precast steel frame cage of the base slab, L-shaped intersection areas are set respectively. The vertical reinforcing bars on the outside of the wall are lapped with the horizontal reinforcing bars on the bottom side of the base slab. At the same time, the vertical reinforcing bars on the inside of the wall are lapped with the horizontal reinforcing bars on the top side of the base slab. Double reverse tie-lock reinforcing bars are inserted from both ends of the precast steel reinforcement cage to be installed into the intersection and overlap area of ​​the precast steel reinforcement cage of the base slab and the precast steel reinforcement cage of the wall.

[0007] Furthermore, the wall and floor slabs are reinforced with steel bars in sections, each section consisting of precast steel bars with a standard length of 9m or 12m.

[0008] Furthermore, the precast steel reinforcement cages between walls and between slabs adopt the longitudinal section connection method; the connection between the left exterior wall, the middle partition wall, the right exterior wall and the bottom slab steel reinforcement cage adopts the transverse section connection method.

[0009] Furthermore, the precast steel reinforcement cage on the left side ties the horizontal transverse reinforcement bars below the longitudinal reinforcement bars.

[0010] Furthermore, during the longitudinal section connection process of the precast steel reinforcement cage, the left precast steel reinforcement cage is first hoisted to the installation position, then the right precast steel reinforcement cage is hoisted to the installation height, and then horizontally inserted from the right to the left at the lap position of the left precast steel reinforcement cage, so that the upper and lower layers of steel reinforcement of the right steel reinforcement cage are placed on the upper and lower layers of steel reinforcement of the left floor slab precast steel reinforcement cage, and the longitudinal steel reinforcement on both sides is fully tied or lap welded, thereby connecting the left and right steel reinforcement cages into a whole.

[0011] Furthermore, during the cross-sectional connection of the wall and the base slab steel reinforcement cage, the precast base slab steel reinforcement cage is hoisted to the installation position, and then the precast wall steel reinforcement cage is hoisted to the installation height. The precast wall steel reinforcement cage is then inserted into the base slab steel reinforcement cage from the side, so that the L-shaped intersection area of ​​the base slab steel reinforcement cage and the precast wall steel reinforcement cage coincides.

[0012] Furthermore, two opposite tie-lock reinforcing bars are cut into two tie bars of equal length according to the length of the precast reinforcing bar skeleton of the wall and the base plate; the diameter and model of the tie-lock reinforcing bars are equal to the diameter and model of the original outer horizontal longitudinal reinforcing bars at the connection point of the wall and the base plate.

[0013] Furthermore, hooks are welded onto the two opposing tie-lock steel bars according to the spacing of the vertical main reinforcement of the wall and the horizontal main reinforcement of the bottom plate; the hooks welded on the two opposing tie-lock steel bars are bent in the opposite direction, and the two opposing tie-lock steel bars are merged and welded together to form a lock shape.

[0014] Furthermore, the reverse tensioning causes the hooks of the two reverse tensioning lock bars to lock the main bars at the connection between the wall and the floor slab together one by one, and the ends of the two reverse tensioning lock bars are directly welded together.

[0015] Furthermore, the hook is made of threaded steel with a diameter of 10mm.

[0016] This invention provides a method for installing a precast steel reinforcement cage, which has the following advantages: This invention applies precast steel reinforcement cage technology to construct steel reinforcement projects. It involves assembling the wall panel steel reinforcement cage in a precast factory using a double-strand reverse-interlocking steel reinforcement device. Specifically, the wall and floor slab steel reinforcement cages are precast in the steel processing plant and then transported to the construction site for installation. For areas where manual binding of the wall and floor slab steel reinforcement cages is impossible or difficult, double-strand reverse-interlocking steel reinforcement is used to create a robust steel reinforcement cage as a whole. This overcomes the problem of ineffective and rapid installation of the longitudinal and transverse connection nodes of the precast steel reinforcement cage. It achieves overall stability and seismic resistance of the precast steel reinforcement cage's longitudinal and transverse connection nodes equivalent to on-site binding nodes. It offers advantages such as fast construction speed, strong overall structural stability, low on-site labor requirements, and convenient installation. Furthermore, it provides a valuable and effective method for the rapid and secure connection of double-section steel reinforcement cages in confined spaces. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 A step diagram illustrating the installation method of a precast steel reinforcement cage provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the longitudinal section connection of the steel reinforcement cage provided in an embodiment of the present invention;

[0020] Figure 3 This is a structural schematic diagram of two reverse tie-lock reinforcing bars provided in an embodiment of the present invention;

[0021] Figure 4 This is a structural schematic diagram of the precast steel reinforcement frame for the exterior wall provided in an embodiment of the present invention;

[0022] Figure 5 This is a structural schematic diagram of the precast steel reinforcement cage for the base plate provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the cross-sectional connection between the external wall and the base slab reinforcement skeleton provided in an embodiment of the present invention. Detailed Implementation

[0024] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] See Figure 1 As shown, this is a method for installing a precast steel reinforcement cage according to an embodiment of the present invention, comprising:

[0026] S01, according to the design requirements of the wall and floor slab steel reinforcement cage, the prefabrication is carried out in the form of wall steel reinforcement cage and floor slab steel reinforcement cage respectively, and the prefabricated steel reinforcement cage is installed in both the cross section direction and the longitudinal section direction.

[0027] S02, longitudinal section connection of the steel reinforcement cage: the steel reinforcement cage to be connected is divided into a left precast steel reinforcement cage and a right precast steel reinforcement cage, and lap sections are reserved at the connection of the two respectively. The left precast steel reinforcement cage connection end is provided with longitudinal steel bars and horizontal transverse steel bars, while the right connection end is only provided with longitudinal steel bars. The right precast steel reinforcement cage is horizontally inserted into the left precast steel reinforcement cage, and the longitudinal steel bars on the left and right sides are lapped and connected to form a whole.

[0028] S03, the wall and the base slab steel reinforcement cage are connected in the transverse direction. At the intersection of the precast steel reinforcement cage of the wall and the precast steel frame cage of the base slab, L-shaped intersection areas are set respectively. The vertical reinforcing bars on the outside of the wall are lapped with the horizontal reinforcing bars on the bottom side of the base slab. At the same time, the vertical reinforcing bars on the inside of the wall are lapped with the horizontal reinforcing bars on the top side of the base slab. From both ends of the precast steel reinforcement cage to be installed, two reverse tie-lock steel bars are inserted into the intersection and overlap area of ​​the precast steel reinforcement cage of the base slab and the precast steel reinforcement cage of the wall.

[0029] In this embodiment, the wall and floor slabs are reinforced with steel bars in strips, and each strip is made of finished steel bars with a standard length of 9m or 12m.

[0030] In this embodiment, the precast steel reinforcement cages between walls and between slabs are connected using the longitudinal section direction; the connection between the left outer wall, the middle partition wall, the right outer wall and the bottom slab steel reinforcement cage is connected using the transverse section direction.

[0031] In this embodiment, the precast steel reinforcement cage on the left side ties the horizontal reinforcing bars below the longitudinal reinforcing bars.

[0032] In this embodiment, during the longitudinal section connection process of the precast steel reinforcement cage, the left precast steel reinforcement cage is first hoisted to the installation position, then the right precast steel reinforcement cage is hoisted to the installation height, and then horizontally inserted from the right to the left at the lap position of the left precast steel reinforcement cage, so that the upper and lower layers of steel reinforcement of the right steel reinforcement cage are placed on the upper and lower layers of steel reinforcement of the left floor slab precast steel reinforcement cage, and the longitudinal steel reinforcements on both sides are fully tied or lap welded, thereby connecting the left and right steel reinforcement cages into a whole.

[0033] In this embodiment, during the cross-sectional connection of the wall and the base plate steel reinforcement cage, the precast base plate steel reinforcement cage is hoisted to the installation position, and then the precast wall steel reinforcement cage is hoisted to the installation height. The precast wall steel reinforcement cage is then inserted into the base plate steel reinforcement cage from the side, so that the L-shaped intersection area of ​​the base plate steel reinforcement cage and the precast wall steel reinforcement cage coincides.

[0034] In this embodiment, two opposing tie-lock steel bars are cut into two tie bars of equal length according to the length of the precast steel reinforcement skeleton of the wall and the base plate; the diameter and model of the tie-lock steel bars are equal to the diameter and model of the original outer horizontal longitudinal steel bars at the connection point of the wall and the base plate.

[0035] In this embodiment, hooks are welded to the two opposing tie-lock steel bars according to the spacing of the vertical main reinforcement of the wall and the horizontal main reinforcement of the bottom plate; the hooks welded to the two opposing tie-lock steel bars are bent in opposite directions, and the two opposing tie-lock steel bars are welded together to form a lock shape.

[0036] In this embodiment, reverse tensioning causes the hooks of the two reverse tensioning locking bars to lock the main bars at the connection between the wall and the floor slab together one by one, and the ends of the two reverse tensioning locking bars are directly welded together.

[0037] In this embodiment, the hook is made of threaded steel with a diameter of 10mm.

[0038] The following describes in more detail a method for installing a precast steel reinforcement frame according to the present invention, with reference to preferred embodiments.

[0039] According to the construction drawings and the design requirements for the wall and floor slab reinforcement cages, prefabricated wall reinforcement cages and floor slab reinforcement cages were fabricated in the steel reinforcement processing yard. Each cage was 9m or 12m long, the standard length of the finished steel reinforcement. The bidirectional installation method of the prefabricated steel reinforcement cages in both the transverse and longitudinal directions is as follows:

[0040] Step 1: Connecting precast steel reinforcement cages in the longitudinal direction, i.e., connecting precast steel reinforcement cages in the longitudinal direction between walls and slabs. Taking the connection between slab steel reinforcement cages as an example, the connection of wall steel reinforcement cages is carried out in the same way.

[0041] Step 1: Divide the precast steel reinforcement cage of the floor slab into two sections: the left precast steel reinforcement skeleton 1 and the right precast steel reinforcement skeleton 2. The precast steel reinforcement skeleton of the floor slab is made in the steel processing plant. At both ends of the length direction of the left precast steel reinforcement skeleton 1, two sections of precast steel reinforcement lap length 1-1 are reserved according to the relevant national standards. Within this length range, the horizontal transverse steel reinforcement 1-3 is tied below the longitudinal steel reinforcement 1-2.

[0042] Step 2: Leave two sections of precast steel reinforcement lap length 2-1 in the length direction of the precast steel reinforcement skeleton 2 on the right side of the floor slab. No horizontal transverse reinforcement is set within this length range, only longitudinal reinforcement 2-2 is set.

[0043] Step 3: At the construction site, first hoist the precast steel reinforcement cage 1 of the left floor slab to the installation position, then hoist the precast steel reinforcement cage 2 of the right floor slab to the installation height, and then horizontally insert it from right to left into the lap position 1-1 of the precast steel reinforcement cage of the left floor slab, so that the upper and lower layers of steel reinforcement of the right floor slab steel reinforcement cage 2 are placed on the upper and lower layers of steel reinforcement of the left floor slab precast steel reinforcement cage 1, and lap connect the longitudinal main reinforcing bars 1-2 and 2-2 on both sides (full binding or lap welding), thereby connecting the steel reinforcement cages 1 and 2 on both sides into a whole.

[0044] Step 2: Connecting the exterior wall and the foundation slab reinforcement cage in the transverse direction, i.e., the method of cross-connecting the exterior wall and the foundation slab precast reinforcement cage in the transverse direction. Taking the connection of the left exterior wall reinforcement cage and the foundation slab reinforcement cage as an example, the connection of the middle partition wall and the foundation slab reinforcement cage in the transverse direction is carried out in the same way.

[0045] Step 1: Fabricate the precast steel reinforcement cage 3 for the base slab and the precast steel reinforcement cage 4 for the exterior wall at the steel reinforcement processing plant. On the left side of the precast steel reinforcement cage 3 for the base slab, according to relevant design requirements and national standards, leave a precast steel reinforcement cage area 3-1 for the base slab that intersects with the precast steel reinforcement cage 4 for the exterior wall on the left side; on the lower side of the precast steel reinforcement cage for the exterior wall, according to relevant design requirements and national standards, leave a precast steel reinforcement cage area 4-1 for the exterior wall that intersects with the precast steel reinforcement cage 3 for the base slab, that is, the precast steel reinforcement cage area 3-1 for the base slab and the precast steel reinforcement cage area 4-1 for the exterior wall are the cross areas for the steel reinforcement cage to be tied together. The outer horizontal longitudinal steel bars 4-3 and the inner horizontal longitudinal steel bars 4-2 of these two cross connection areas 3-1 and 4-1 are not installed;

[0046] Step 2: At the construction site, hoist the precast steel reinforcement cage 3 of the base slab to the installation position, then hoist the precast steel reinforcement cage 4 of the left exterior wall to the installation height, and then insert the precast steel reinforcement cage 4 of the left exterior wall into the base slab steel reinforcement cage 3 from left to right, so that the precast steel reinforcement cage area 3-1 of the base slab and the precast steel reinforcement cage area 4-1 of the exterior wall intersect and overlap to form the wall panel intersection area (i.e., 3-1 and 4-1), so that the vertical reinforcing bars 4-4 on the outer side of the exterior wall and the horizontal reinforcing bars 3-2 on the lower side of the base slab are lapped and connected one-to-one, and at the same time, the vertical reinforcing bars 4-5 on the inner side of the exterior wall and the horizontal reinforcing bars 3-3 on the upper side of the base slab are lapped and connected one-to-one.

[0047] Step 3: For the installation of the inner horizontal longitudinal reinforcement 4-2 in the wall panel intersection area (i.e., 3-1 and 4-1), first, tightly attach the inner vertical reinforcement 4-5 of the outer wall to the upper horizontal reinforcement 3-3 of the bottom slab one by one. Then, according to the longitudinal reinforcement spacing required by the design drawings, use the inner horizontal longitudinal reinforcement 4-2 to tie the upper horizontal reinforcement 3-3 of the bottom slab and the inner vertical reinforcement 4-5 of the outer wall into one piece, thereby completing the binding and installation of the inner reinforcement of the outer wall and the upper reinforcement of the bottom slab.

[0048] Step 4: For the installation of the horizontal longitudinal reinforcement 4-3 on the outer side of the wall panel intersection area (i.e., 3-1 and 4-1), first, put the vertical reinforcing bars 4-4 on the outer side of the outer wall and the horizontal reinforcing bars 3-2 on the lower side of the bottom slab together in a one-to-one correspondence. Then, according to the longitudinal reinforcement spacing required by the design drawings, insert double reverse tie-lock reinforcement bars 5 from both ends of the precast reinforcement skeleton to be installed into the intersection and overlap area of ​​the precast reinforcement skeleton area 3-1 of the bottom slab and the precast reinforcement skeleton area 4-1 of the outer wall.

[0049] Step 5: Cut two opposite tie-lock steel bars 5 into two tie bars of equal length according to the length of the precast steel reinforcement skeleton of the outer wall and the bottom slab (the diameter and model of the steel bars are equal to the diameter and model of the original outer horizontal longitudinal steel bar 4-3 at the connection point of the outer wall and the bottom slab). Weld hooks 6 on these two opposite tie-lock steel bars 5 according to the spacing of the vertical main reinforcement 4-4 of the wall and the horizontal transverse main reinforcement 3-2 of the floor slab. The hooks 6 are made of 10mm diameter threaded steel. The hooks 6 welded on the two opposite tie-lock steel bars 5 are bent in opposite directions. After the two opposite tie-lock steel bars 5 are combined and welded together, they can form a lock shape.

[0050] Step 6: The two reverse tie-locking steel bars 5 are installed at the position of the horizontal longitudinal steel bars 4-3 on the outside of the wall panel intersection area (i.e., 3-1 and 4-1) in the design drawing. The two reverse tie-locking steel bars 5 use their own hooks 6 to align with the vertical reinforcing bars 4-4 on the outside of the wall and the horizontal reinforcing bars 3-2 on the bottom side of the base plate. The reverse tensioning makes the hooks 6 of the two reverse tie-locking steel bars 5 lock the main reinforcing bars 8 at the connection between the wall and the floor slab one by one. The two ends 7 of the two reverse tie-locking steel bars 5 are directly welded together, thereby realizing the "full binding state" of the longitudinal and transverse reinforcing bars at the wall panel intersection, ensuring the overall stability of the steel cage connection node.

[0051] In summary, the precast steel reinforcement cage installation method disclosed in this embodiment has the following advantages: This invention applies precast steel reinforcement cage technology to construct steel reinforcement projects. It is a method of assembling the wall panel steel reinforcement cage in a precast factory off-site using a double-strand reverse-pull-locking steel reinforcement device. That is, the wall and floor slab steel reinforcement cages are precast in the steel reinforcement processing plant and then hoisted to the construction site for installation. For the sections of the wall and floor slab steel reinforcement cages that are difficult or impossible to tie manually, double-strand reverse-pull-locking steel reinforcement is used to install a solid steel reinforcement cage as a whole. This overcomes the problem of the inability to effectively and quickly install the longitudinal and transverse connection nodes of the precast steel reinforcement cage. It achieves the same overall stability and seismic resistance of the longitudinal and transverse connection nodes of the precast steel reinforcement cage as the on-site tied nodes. It has the advantages of fast construction speed, strong overall structural stability, less on-site labor, and convenient installation. It also provides an effective method for the rapid and secure connection of double-section steel reinforcement cages in confined spaces.

[0052] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0053] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for installing a precast steel reinforcement cage, characterized in that, include: According to the design requirements of the wall and floor slab steel reinforcement cage, they are prefabricated in the form of wall steel reinforcement cage and floor slab steel reinforcement cage respectively, and installed in both directions of cross section and longitudinal section of the prefabricated steel reinforcement cage. The longitudinal section of the steel reinforcement cage is connected. The steel reinforcement cage to be connected is divided into a left precast steel reinforcement cage and a right precast steel reinforcement cage. A lap section is reserved at the connection of the two. The left precast steel reinforcement cage is equipped with longitudinal steel bars and horizontal transverse steel bars at the connection end, while the right connection end is only equipped with longitudinal steel bars. The right precast steel reinforcement cage is horizontally inserted into the left precast steel reinforcement cage, and the longitudinal steel bars on the left and right sides are lapped and connected to form a whole. The wall and the base slab are connected in the transverse direction of the steel reinforcement cage. At the intersection of the precast steel reinforcement cage of the wall and the precast steel frame cage of the base slab, L-shaped intersection areas are set respectively. The vertical reinforcing bars on the outside of the wall are lapped with the horizontal reinforcing bars on the bottom side of the base slab, and the vertical reinforcing bars on the inside of the wall are lapped with the horizontal reinforcing bars on the top side of the base slab. Two reverse tie-lock steel bars are inserted from both ends of the precast steel reinforcement cage to be installed into the intersection and overlap area of ​​the precast steel reinforcement cage of the base slab and the precast steel reinforcement cage of the wall. Hooks are welded on the two reverse tie-lock steel bars according to the spacing of the vertical main bars of the wall and the horizontal main bars of the base slab. The hooks welded on the two reverse tie-lock steel bars are bent in the opposite direction. After the two reverse tie-lock steel bars are merged and welded together, they form a lock. Reverse tensioning causes the hooks of the two reverse tie-lock steel bars to lock the main bars at the connection between the wall and the floor slab one by one. The two ends of the two reverse tie-lock steel bars are directly welded together.

2. The method for installing precast steel reinforcement cages according to claim 1, characterized in that, The wall and floor slabs are reinforced with steel bars in sections. Each section of the reinforcement is made of precast steel bars, with a standard length of 9m or 12m.

3. The method for installing precast steel reinforcement cages according to claim 1, characterized in that, The precast steel reinforcement cages between walls and between slabs are connected using the longitudinal section direction; the connection between the left exterior wall, the middle partition wall, the right exterior wall and the bottom slab steel reinforcement cage is connected using the transverse section direction.

4. The method for installing precast steel reinforcement cages according to claim 1, characterized in that, The precast steel reinforcement cage on the left side ties the horizontal reinforcing bars below the longitudinal reinforcing bars.

5. The method for installing precast steel reinforcement cages according to claim 1, characterized in that, During the longitudinal section connection of the precast steel reinforcement cage, the left precast steel reinforcement cage is first hoisted to the installation position, and then the right precast steel reinforcement cage is hoisted to the installation height. Then, it is horizontally inserted from the right to the left at the lap position of the left precast steel reinforcement cage, so that the upper and lower layers of steel reinforcement of the right steel reinforcement cage are placed on the upper and lower layers of steel reinforcement of the left floor slab precast steel reinforcement cage. The longitudinal steel reinforcements on both sides are fully tied or lap welded, thereby connecting the left and right steel reinforcement cages into a whole.

6. The method for installing precast steel reinforcement cages according to claim 1, characterized in that, During the cross-sectional connection of the wall and the base slab steel reinforcement cage, the precast base slab steel reinforcement cage is hoisted to the installation position, and then the precast wall steel reinforcement cage is hoisted to the installation height. The precast wall steel reinforcement cage is then inserted into the base slab steel reinforcement cage from the side, so that the L-shaped intersection area of ​​the base slab steel reinforcement cage and the precast wall steel reinforcement cage coincides.

7. The method for installing precast steel reinforcement cages according to claim 1, characterized in that, Two opposing tie-lock steel bars are cut to the same length as the precast steel reinforcement skeleton of the wall and the base plate. The diameter and model of the tie-lock steel bars are equal to the diameter and model of the original outer horizontal longitudinal steel bars at the connection point of the wall and the base plate.

8. The method for installing precast steel reinforcement cages according to claim 1, characterized in that, The hook is made of 10mm diameter threaded steel.

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