A construction method for installing modified gypsum board partitions on assembly box structural panels.

Abstract

This invention belongs to the technical field of prefabricated boxes for hollow floor slabs, and discloses a construction method for installing modified gypsum partition boards on the structural plate of the prefabricated box. This method addresses the problems of steel bars affecting the installation of modified gypsum partition boards and the difficulty in machining the mounting holes for fixing the steel bars. The invention includes the following steps: (1) prefabricating an upper cover plate and a lower base plate of the prefabricated box; (2) inserting a steel column into a through hole in the lower base plate; (3) laying a modified gypsum partition board on the upper part of the lower base plate and connecting the modified gypsum partition board to the steel column; (4) covering the modified gypsum partition board with an upper cover plate and extending the upper end of the steel column into a blind hole in the upper cover plate, wherein a cavity is formed between the through hole and the blind hole in the upper cover plate. This invention is easy to install and operate, and can improve the stability of the steel column anchorage, thereby ensuring the stable installation of the modified gypsum partition board.

Description

Technical Field

[0001] This invention belongs to the field of assembly box technology, and specifically relates to a construction method for installing modified gypsum partition boards on an assembly box structural plate. Background Technology

[0002] The hollow core slab assembly box is composed of three interlocking sections: a precast reinforced concrete base slab, lightweight side slabs, and a precast reinforced concrete top slab. Assembly boxes are available in two forms: "exposed top slab box" (open box) and "top slab plus cast-in-place layer box" (closed box) (the base slab of the assembly box is always exposed). Its top and bottom slabs are precast composite components that participate in the overall load-bearing structure. The concrete strength grade of the top and bottom slabs of the assembly box is C30, and the reinforcing steel is ribbed and deformable. The assembly box is a ribbed slab with a "box-shaped" cross-section, representing a new type of slab structure. The assembly box grid beam slab is formed by connecting small precast "concrete assembly boxes" with cast-in-place concrete ribbed beams to create a beam-slab integrated structure with a continuous box-shaped cross-section. The main advantages of prefabricated box girder hollow floor slabs are as follows: They reduce on-site wet work, meeting national standards for assembly rate, thus achieving energy conservation and environmental protection; utilizing the structural advantages of the prefabricated box itself, most floor slabs adopt "exposed box" floor slabs, without reinforced concrete surface layers, greatly reducing the amount of steel and concrete used; the flat bottom of the prefabricated box girder hollow floor slab, without secondary beams, allows for ceiling-free construction, achieving the effect of a suspended ceiling and saving construction investment; the hollow structure of the prefabricated box girder hollow floor slab provides insulation, heat insulation, and noise reduction, preventing noise transmission between floors; in the later stages of a project, layout changes are possible, as ordinary structural partition walls must be built on beams, while the prefabricated box girder floor slab structure is not subject to this constraint, facilitating future modifications; the standard thickness of the prefabricated box girder floor slab is 330mm, while the secondary beams in traditional beam-slab structures are around 600mm, so using the prefabricated box girder hollow floor slab can increase the structural net height by nearly 300mm, making the interior more transparent and bright.

[0003] To improve the installation stability of lightweight side panels, steel columns are typically installed between the top plate and the cover plate to enhance overall strength. (Combined with attached...) Figure 1When modified gypsum board 4 needs to be installed on assembly box 1, it needs to be stabilized using steel columns 3. The existing method involves inserting rebar 201 into the rib beams 102 on both sides of the top plate (or cover plate) 101 of assembly box 1, then binding ground beam rebar 202 to the rebar 201, and then fixing the steel column 3 (or steel structure column) with steel clips 204. Finally, concrete is poured around the ground beam rebar 202 to form a reinforced concrete ground beam 203. This method not only has the problems of cumbersome construction procedures and long construction period, but also, since the assembly box plate is mostly 50mm thick, the rebar penetration through the assembly box cover plate does not reach the effective rebar anchorage length. Even if the steel column 3 is fastened to the reinforced concrete ground beam 102 with bolts, an effective load-bearing anchorage system cannot be formed, resulting in poor stability of the steel column 3 and hindering the stable installation of the modified gypsum board 4.

[0004] In response to the above problems, and in conjunction with the appendix Figure 2 and attached Figure 3 Patent application CN202221559662.9 discloses a steel column installation structure for mounting modified gypsum board partitions on an assembly box structural plate. It includes a first steel bar 51 and a second steel bar 52 for connecting to the rib beams 102 on both sides of the cover plate 101 of the assembly box 1. The first steel bar 51 and the second steel bar 52 are parallel to each other and fastened to the rib beams 102 with bolts. The lower end of the steel column 3 for mounting the modified gypsum board partition 4 is welded to the first steel bar 51 and the second steel bar 52. While using steel bars as support points for the steel columns can improve the stability of the steel column installation structure, the following technical problems exist in actual operation:

[0005] 1. Although steel bars can serve as an anchoring system for steel columns, their installation can affect the installation of lightweight modified gypsum partition boards. Furthermore, the contact area between the top and bottom plates of the assembly box and the lightweight modified gypsum partition boards is relatively small, thus limiting the installation location of the modified gypsum partition boards.

[0006] 2. The method of installing steel bars on the cover or bottom plate of the assembly box using bolt connections presents the following problems in actual construction: Since the assembly box used for constructing hollow concrete floor slabs needs to be connected to the on-site steel reinforcement cage before pouring, steel bars are pre-embedded in the ribs of the assembly box. These pre-embedded steel bars are connected to the on-site steel reinforcement cage to organically integrate the assembly box with the cast-in-place structure (steel reinforcement cage and periodically poured concrete) into a whole. However, when drilling installation holes (for inserting impact bolts) into the ribs, the hole depth is often insufficient, or the pre-embedded steel bars are damaged during drilling. Summary of the Invention

[0007] To address the issues of steel bars affecting the installation of modified gypsum partition boards and the difficulty in machining the mounting holes for fixing the steel bars, this invention provides a construction method for installing modified gypsum partition boards on an assembly box structure plate. This method effectively fixes the steel columns used for installing the modified gypsum partition boards while also being easy to process.

[0008] To solve the technical problem, the technical solution adopted by this invention is as follows:

[0009] A construction method for installing modified gypsum board partitions on an assembly box structural panel, characterized by comprising:

[0010] (1) Steps for fabricating the top cover and bottom plate of the prefabricated assembly box;

[0011] (2) Insert steel columns into the through holes at the four corners of the lower base plate, and make the lower end of the inserted steel column extend into the blind hole of the lower base plate, and form a cavity between the through hole in the lower base plate and the blind hole of the lower base plate.

[0012] (3) A modified gypsum partition board is laid around the upper part of the bottom plate and the modified gypsum partition board is connected to the steel column;

[0013] (4) The upper cover plate is placed on top of the modified gypsum partition wall panel connected to the steel column. The upper cover plate and the lower base plate respectively hold the upper and lower ends of the modified gypsum partition wall panel. When the upper cover plate is placed on the modified gypsum partition wall panel, the upper end of the steel column can pass through the through hole of the upper cover plate and extend into the blind hole of the upper cover plate. A cavity is formed between the through hole in the upper cover plate and the blind hole of the upper cover plate.

[0014] In some embodiments, in step (2), when the steel column is inserted into the blind hole of the lower base plate, the steel column is locked to the inner top surface of the cavity of the lower base plate by using the pin provided in the pin hole on the steel column; in step (4), when the steel column is inserted into the blind hole of the upper cover plate, the steel column is locked to the lower bottom surface of the cavity of the upper cover plate by using the pin provided in the pin hole on the steel column.

[0015] In some embodiments, both the upper cover plate and the lower base plate include a base plate and a top plate. The thickness of the top plate of the upper cover plate is greater than the thickness of the base plate of the upper cover plate, and the thickness of the top plate of the lower base plate is less than the thickness of the base plate of the lower base plate. Through holes for inserting steel columns are provided at the four corners of the base plate of the upper cover plate and the top plate of the lower base plate. Blind holes that are adapted to the through holes are provided on both the top plate of the upper cover plate and the base plate of the lower base plate. The positions of the through holes and blind holes on the upper cover plate correspond to each other, the positions of the through holes and blind holes on the lower base plate correspond to each other, and the positions of the through holes on the upper cover plate and the lower base plate correspond to each other.

[0016] In some embodiments, a rib beam is provided between the bottom plate and the top plate, and the rib beam contains embedded reinforcing bars for connection with the reinforcing steel skeleton of the cast hollow floor slab.

[0017] In some embodiments, the bottom plate of the upper cover plate has a groove on the side facing the lower bottom plate, and the top plate of the lower bottom plate has a groove on the side facing the upper cover plate. The groove is used to limit the position of the modified gypsum partition board.

[0018] In some embodiments, the through holes and blind holes on the upper cover plate and the through holes and blind holes on the lower base plate are all provided with foam pads.

[0019] In some embodiments, the through holes and blind holes in the upper cover plate are located in the area between the outermost rib's outer side wall and the outer side wall of the upper cover plate, and the through holes and blind holes in the lower base plate are located in the area between the outermost rib's outer side wall and the outer side wall of the lower base plate.

[0020] In some embodiments, the upper and lower ends of the steel column are provided with pin holes, and the pin holes are equipped with pins; when the lower end of the steel column is inserted into the blind hole in the lower base plate, the pin hole at the lower end of the steel column is located between the top plate and the bottom plate of the lower base plate, and when the pin is inserted into the pin hole at the lower end of the steel column, the upper end face of the pin contacts the lower end face of the top plate of the lower base plate; when the upper end of the steel column is inserted into the blind hole in the upper cover plate, the pin hole at the upper end of the steel column is located between the bottom plate and the top plate of the upper cover plate, and when the pin is inserted into the pin hole at the upper end of the steel column, the lower end face of the pin contacts the upper end face of the bottom plate of the upper cover plate.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention discloses a construction method for installing modified gypsum partition walls on an assembly box structural plate. Through holes are provided on the bottom plate of the upper cover plate and blind holes on the top plate; similarly, through holes are provided on the top plate of the lower base plate and blind holes on the bottom plate. Steel columns are directly inserted into these through holes and blind holes, thus achieving circumferential positioning of the steel columns. The circumferential positioning of the steel columns is then achieved through the engagement of pins with pin holes on the steel columns, forming a stable anchoring system that facilitates the installation of the modified gypsum partition walls. Compared to existing technologies, this invention only requires pre-embedded pipes during the prefabrication of the upper cover plate and lower base plate to create through holes and blind holes. During steel column installation, the steel columns are simply inserted into these holes and locked using locking pins. Compared to existing methods of installing steel bars and drilling holes in the ribs for bolt installation, this invention's method is not only simpler to operate but also easier to manufacture in the upper cover plate and lower base plate of the assembly box, significantly reducing the cost of assembly box installation.

[0023] This invention makes full use of the structural characteristics of the upper cover plate and the lower base plate to carry out ingenious design, which completely solves the problem of poor assembly quality of modified gypsum partition boards caused by the unreliable anchoring system of the steel columns of the assembly box in the prior art.

[0024] This invention avoids affecting the installation of modified stone partition panels by anchoring steel columns with steel bars, and also prevents damage to the pre-embedded reinforcing bars in the rib beams. More importantly, when the assembly box of this invention is fused together with the hollow floor slab, the poured concrete first enters the cavity of the bottom plate of the assembly box, using the on-site poured concrete to cover and embed the lower end of the steel column, further ensuring the strength of the steel column connection.

[0025] It should be noted that ensuring the connection strength of the steel columns aims to guarantee the stability of the modified gypsum board installation. The stability of the modified gypsum board is primarily reflected in the fact that it will not move slightly due to the compression of concrete during the pouring of the hollow floor slab. In existing technology (the patent structure with application number CN202221559662.9), the steel bars, due to their length, lack sufficient rigidity, leading to unstable anchoring of the steel columns. Consequently, during the pouring of the hollow floor slab, the modified gypsum board may move, causing the poured concrete to enter the assembly box. This invention fully utilizes the concrete poured during the construction of hollow floor slabs to tightly cover and fill the lower end of the steel columns, thereby forming a solid anchoring system. In other words, the anchoring system of the steel columns in this invention consists of: through holes and blind holes for circumferential positioning of the steel columns, plus the cooperation of locking pins with the inner cavity wall to achieve axial positioning of the steel columns. In addition, the circumferential and axial positioning of the steel columns is achieved by first pouring concrete (i.e., when the concrete is poured, it is filled from bottom to top, and before the concrete comes into contact with the modified gypsum board (i.e., before the concrete compresses the modified gypsum board), the poured concrete has already embedded and stabilized the steel columns). This completely solves the technical problem of unstable anchoring of steel columns used for installing modified gypsum board. Attached Figure Description

[0026] Figure 1 A schematic diagram of an embodiment for mounting steel columns on an existing assembly box;

[0027] Figure 2 and Figure 3 A schematic diagram of another embodiment for mounting steel columns on an existing assembly box, wherein... Figure 2 Main view structural diagram. Figure 3 A schematic diagram of the structure for installing steel bars;

[0028] Figure 4 This is a schematic diagram of the assembly box of the present invention;

[0029] Figure 5This is a cross-sectional view of the assembly box of the present invention.

[0030] The markings in the diagram are: 1. Assembly box, 101. Top plate (or cover plate), 102. Rib beam, 103. Bottom plate, 104. Embedded steel bar, 105. Through hole, 106. Blind hole, 201. Rebar installation, 202. Ground beam reinforcement, 203. Reinforced concrete ground beam, 204. Steel clip, 3. Steel column (or steel structure column), 4. Modified gypsum partition board, 5. Steel bar, 51. First steel bar, 52. Second steel bar, 6. Expansion bolt, 7. Pin hole, 8. Pin, 01. Upper cover plate, 02. Lower bottom plate. Detailed Implementation

[0031] The present invention will be further described below with reference to embodiments. These embodiments are merely some, not all, of the embodiments of the present invention. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the protection scope of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" 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 mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Combined with appendix Figure 4 and attached Figure 5 The present invention provides a construction method for installing modified gypsum board partitions on an assembly box structural plate, comprising:

[0034] (1) The steps of the upper cover plate 01 and the lower bottom plate 02 of the prefabricated assembly box 1;

[0035] (2) Insert steel columns 3 into the through holes 105 at the four corners of the lower base plate 02, and make the lower end of the inserted steel column 3 able to extend into the blind hole 106 of the lower base plate 02, and form a cavity between the through hole 105 in the lower base plate 02 and the blind hole 106 of the lower base plate 02.

[0036] (3) A modified gypsum partition board 4 is laid around the upper end of the bottom plate 02 and the modified gypsum partition board 4 is connected to the steel column 3. The installation of the modified gypsum partition board 4 on the steel column 3 is an existing technology. For example, the modified gypsum partition board 4 can be installed on the steel column 3 directly with steel clips.

[0037] (4) The upper cover plate 01 is placed on top of the modified gypsum partition wall 4 connected to the steel column 3. The upper cover plate 01 and the lower base plate 02 respectively hold the upper and lower ends of the modified gypsum partition wall 4. When the upper cover plate 01 is placed on the modified gypsum partition wall 4, the upper end of the steel column 3 can pass through the through hole 105 of the upper cover plate 01 and extend into the blind hole 106 of the upper cover plate 01. A cavity is formed between the through hole 105 and the blind hole 106 of the upper cover plate 01.

[0038] In some embodiments, in step (2), when the steel column 3 is inserted into the blind hole 106 of the lower base plate 02, the steel column 3 is locked to the inner top surface of the cavity of the lower base plate 02 by the pin 8 provided with the pin hole 7 on the steel column 3 (that is, the pin 8 is in contact with the inner top surface of the inner cavity of the lower base plate, thereby limiting the position of the locking pin); in step (4), when the steel column 3 is inserted into the blind hole 106 of the upper cover plate 01, the steel column is locked to the lower bottom surface of the cavity of the upper cover plate by the pin 8 provided with the pin hole 7 on the steel column 3 (that is, the pin 8 is in contact with the lower bottom surface of the inner cavity of the upper cover plate, thereby limiting the position of the locking pin).

[0039] In the actual process, one end of the pin 8 is a large end, and the other end of the pin is provided with a through hole. The through hole is equipped with a tie wire. That is to say, when the pin 8 is inserted into the pin hole 7 of the steel column 3, the other end of the pin can pass through the steel column 3 and prevent the pin 8 from falling off the steel column 3 through the cooperation of the tie wire and the through hole on the pin 8.

[0040] Combined with appendix Figure 4 and attached Figure 5In some embodiments, both the upper cover plate 01 and the lower base plate 02 include a base plate 103 and a top plate 101. The thickness of the top plate 101 of the upper cover plate 01 is greater than the thickness of the base plate 103 of the upper cover plate 02, and the thickness of the top plate 101 of the lower base plate 02 is less than the thickness of the base plate 103 of the lower base plate 02. The four corners of the base plate 103 of the upper cover plate 01 and the top plate 101 of the lower base plate 02 are provided with through holes 105 for inserting steel columns 3. The top plate 101 of the upper cover plate 01 and the base plate 103 of the lower base plate 02 are provided with blind holes 106 that are adapted to the through holes 105. The positions of the through holes and blind holes on the upper cover plate correspond to each other, the positions of the through holes and blind holes on the lower base plate correspond to each other, and the positions of the through holes 105 on the upper cover plate 01 correspond to the positions of the through holes 105 on the lower base plate 02. That is to say, the through holes and blind holes on the upper cover plate are all set to correspond to the through holes and blind holes on the lower base plate, so as to facilitate the insertion of the steel column 3.

[0041] In some embodiments, a rib beam 102 is provided between the bottom plate 103 and the top plate 101, and embedded steel bars 104 are pre-embedded in the rib beam 102 for connection with the steel reinforcement skeleton of the cast hollow floor slab. The rib beams 102 are spaced apart between the bottom plate 103 and the top plate 101. This spaced rib beam design facilitates further reduction of the weight of the upper cover plate 01 and the lower bottom plate 02, thereby reducing the overall weight of the assembly box 1.

[0042] In some embodiments, the bottom plate 103 of the upper cover plate 01 has a groove on the side facing the lower bottom plate 02, and the top plate 101 of the lower bottom plate 02 has a groove on the side facing the upper cover plate 01. The grooves are used to limit the position of the modified gypsum partition board. The width of the groove is adapted to the thickness of the modified gypsum partition board.

[0043] It should be noted that the groove only serves to limit and hold the modified gypsum board; the stability of the modified gypsum board mainly relies on the stable connection with the steel column 3. This is because the bottom plate in the upper cover plate and the top plate in the lower bottom plate are relatively thin, making them unsuitable for deep groove structures as they are prone to damage. Furthermore, deeper grooves would also hinder mold opening.

[0044] In some embodiments, to reduce damage to the modified gypsum board due to collisions and compression during handling, the distance between the outer wall of the groove and the outer wall of the upper cover plate is slightly greater than the thickness of the modified gypsum board. In specific real-time operations, the distance between the outer wall of the groove on the upper cover plate and the outer wall of the upper cover plate is 1-3 mm greater than the thickness of the modified gypsum board, and correspondingly, the distance between the outer wall of the groove on the lower base plate and the outer wall of the lower base plate is 1-3 mm greater than the thickness of the modified gypsum board. The upper cover plate and the lower base plate are dimensionally compatible.

[0045] In some embodiments, the through holes and blind holes on the upper cover plate 01 and the through holes and blind holes on the lower base plate 02 are all provided with foam pads to block the through holes and blind holes and prevent other debris from entering the through holes and blind holes.

[0046] In some embodiments, the through holes 105 and blind holes 106 in the upper cover plate 01 are located in the area between the outermost wall of the outermost rib 104 and the outermost wall of the upper cover plate 01, and the through holes 105 and blind holes 106 in the lower base plate 02 are located in the area between the outermost wall of the outermost rib 104 and the outermost wall of the lower base plate 01. This allows the poured concrete to enter around the blind holes and encase the steel columns when the hollow floor slab is poured, thereby tightly fusing the steel columns with the upper cover plate and the lower base plate into a single unit.

[0047] In some embodiments, the upper and lower ends of the steel column 3 are provided with pin holes 7, and the pin holes 7 are equipped with pins 8. When the lower end of the steel column 3 is inserted into the blind hole 106 in the lower base plate 02, the pin hole at the lower end of the steel column 3 is located between the top plate 101 and the bottom plate 103 of the lower base plate 02. When the pin 8 is inserted into the pin hole 107 at the lower end of the steel column 3, the upper end face of the pin 8 contacts the lower end face of the top plate 101 of the lower base plate 02. That is to say, a cavity of the lower base plate is formed between the bottom plate and the outermost rib beam in the lower base plate. The inner top surface of the cavity of the lower base plate is the lower end face of the top plate of the lower base plate. When the upper end of the steel column 3 is inserted into the blind hole 106 in the upper cover plate 01, the pin hole 7 at the upper end of the steel column 3 is located between the bottom plate 103 and the top plate 101 of the upper cover plate 01. When the pin 8 is inserted into the pin hole at the upper end of the steel column, the lower end face of the pin contacts the upper end face of the bottom plate of the upper cover plate. That is to say, a cavity is formed between the bottom plate and the outermost rib in the upper cover plate 01, and the lower bottom surface of the cavity of the upper cover plate is the upper end face of the bottom plate of the upper cover plate. When the steel column is installed and inserted into the blind hole, the position of the steel column can be locked by the pin that cooperates with the pin hole, thereby locking both ends of the steel column to the lower bottom plate and the upper bottom plate respectively.

[0048] This invention discloses a construction method for installing modified gypsum partition walls on an assembly box structural plate. Through holes are provided on the bottom plate of the upper cover plate and blind holes on the top plate; similarly, through holes are provided on the top plate of the lower base plate and blind holes on the bottom plate. Steel columns are directly inserted into these through holes and blind holes, thus achieving circumferential positioning of the steel columns. The circumferential positioning of the steel columns is then achieved through the engagement of pins with pin holes on the steel columns, forming a stable anchoring system that facilitates the installation of the modified gypsum partition walls. Compared to existing technologies, this invention only requires pre-embedded pipes during the prefabrication of the upper cover plate and lower base plate to create through holes and blind holes. During steel column installation, the steel columns are simply inserted into these holes and locked using locking pins. Compared to existing methods of installing steel bars and drilling holes in the ribs for bolt installation, this invention's method is not only simpler to operate but also easier to manufacture in the upper cover plate and lower base plate of the assembly box, significantly reducing the cost of assembly box installation.

[0049] This invention makes full use of the structural characteristics of the upper cover plate and the lower base plate to carry out ingenious design, which completely solves the problem of poor assembly quality of modified gypsum partition boards caused by the unreliable anchoring system of the steel columns of the assembly box in the prior art.

[0050] The purpose of using modified gypsum board and steel columns in this invention is to fully utilize the advantages of modified gypsum board and the high strength of steel columns, and to organically combine the two (see the background section of the patent structure with application number CN202221559662.9, some of the inventors of that patent are also inventors of this invention). Compared with the existing technology of using wood boards and concrete boards to form assembly boxes, it has the advantages of good waterproof and anti-sinking effect and light weight. Compared with the existing technology of using plastic (or a combination of plastic and concrete boards) to form assembly boxes, it has the advantages of good environmental protection and fire resistance. And due to the structural characteristics of wood boards (i.e., wood boards as the connector between the top cover plate and the bottom plate) + concrete board and plastic assembly boxes, there is no problem of installation difficulty at all. Therefore, the technical problem of unstable steel column anchoring system only exists when modified gypsum board is installed on the structural plate of the assembly box (i.e., the top cover plate and bottom plate described in this invention).

[0051] This invention avoids affecting the installation of modified stone partition panels by anchoring steel columns with steel bars, and also prevents damage to the pre-embedded reinforcing bars in the rib beams. More importantly, when the assembly box of this invention is fused together with the hollow floor slab, the poured concrete first enters the cavity of the bottom plate of the assembly box, using the on-site poured concrete to cover and embed the lower end of the steel column, further ensuring the strength of the steel column connection.

[0052] It should be noted that ensuring the connection strength of the steel columns aims to guarantee the stability of the modified gypsum board installation. The stability of the modified gypsum board is primarily reflected in the fact that it will not move slightly due to the compression of concrete during the pouring of the hollow floor slab. In existing technology (the patent structure with application number CN202221559662.9), the steel bars, due to their length, lack sufficient rigidity, leading to unstable anchoring of the steel columns. Consequently, during the pouring of the hollow floor slab, the modified gypsum board may move, causing the poured concrete to enter the assembly box. This invention fully utilizes the concrete poured during the construction of hollow floor slabs to tightly cover and fill the lower end of the steel columns, thereby forming a solid anchoring system. In other words, the anchoring system of the steel columns in this invention consists of: through holes and blind holes for circumferential positioning of the steel columns, plus the cooperation of locking pins with the inner cavity wall to achieve axial positioning of the steel columns. In addition, the circumferential and axial positioning of the steel columns is achieved by first pouring concrete (i.e., when the concrete is poured, it is filled from bottom to top, and before the concrete comes into contact with the modified gypsum board (i.e., before the concrete compresses the modified gypsum board), the poured concrete has already embedded and stabilized the steel columns). This completely solves the technical problem of unstable anchoring of steel columns used for installing modified gypsum board.

Claims

1. A construction method for installing modified gypsum board partitions on an assembly box structural panel, characterized in that, include: (1) Steps for fabricating the top cover and bottom plate of the prefabricated assembly box; (2) Insert steel columns into the through holes at the four corners of the lower base plate, and make the lower end of the inserted steel column extend into the blind hole of the lower base plate, and form a cavity between the through hole in the lower base plate and the blind hole of the lower base plate. (3) A modified gypsum partition board is laid around the upper part of the bottom plate and the modified gypsum partition board is connected to the steel column; (4) The upper cover plate is placed on top of the modified gypsum partition wall panel connected to the steel column. The upper cover plate and the lower base plate respectively hold the upper and lower ends of the modified gypsum partition wall panel. When the upper cover plate is placed on the modified gypsum partition wall panel, the upper end of the steel column can pass through the through hole of the upper cover plate and extend into the blind hole of the upper cover plate. A cavity is formed between the through hole in the upper cover plate and the blind hole of the upper cover plate.

2. The construction method for installing modified gypsum board on an assembly box structural plate according to claim 1, characterized in that, In step (2), when the steel column is inserted into the blind hole of the lower base plate, the steel column is locked in the inner top surface of the cavity of the lower base plate by the pin provided in the pin hole on the steel column; in step (4), when the steel column is inserted into the blind hole of the upper cover plate, the steel column is locked in the lower bottom surface of the cavity of the upper cover plate by the pin provided in the pin hole on the steel column.

3. The construction method for installing modified gypsum board on an assembly box structural plate according to claim 1 or 2, characterized in that, Both the upper cover plate and the lower base plate include a base plate and a top plate. The thickness of the top plate of the upper cover plate is greater than the thickness of the base plate of the upper cover plate, and the thickness of the top plate of the lower base plate is less than the thickness of the base plate of the lower base plate. The four corners of the base plate of the upper cover plate and the top plate of the lower base plate are provided with through holes for inserting steel columns. The top plate of the upper cover plate and the base plate of the lower base plate are provided with blind holes that are adapted to the through holes. The positions of the through holes and blind holes on the upper cover plate correspond to each other, the positions of the through holes and blind holes on the lower base plate correspond to each other, and the positions of the through holes on the upper cover plate and the lower base plate correspond to each other.

4. The construction method for installing modified gypsum board on the assembly box structural plate according to claim 3, characterized in that, A rib beam is provided between the bottom plate and the top plate, and the rib beam contains embedded steel bars for connecting with the steel reinforcement skeleton of the cast hollow floor slab.

5. The construction method for installing modified gypsum board on an assembly box structural plate according to claim 3, characterized in that, The bottom plate of the upper cover plate has a groove on the side facing the lower bottom plate, and the top plate of the lower bottom plate has a groove on the side facing the upper cover plate. The grooves are used to limit the position of the modified gypsum partition board.

6. The construction method for installing modified gypsum board on an assembly box structural plate according to claim 3, characterized in that, The through holes and blind holes on the upper cover plate and the through holes and blind holes on the lower base plate are all equipped with foam pads.

7. The construction method for installing modified gypsum board on an assembly box structural plate according to any one of claims 4-6, characterized in that, The through holes and blind holes in the upper cover plate are located in the area between the outermost rib wall and the outermost wall of the upper cover plate, and the through holes and blind holes in the lower bottom plate are located in the area between the outermost rib wall and the outermost wall of the lower bottom plate.

8. The construction method for installing modified gypsum board on an assembly box structural plate according to claim 3, characterized in that, The steel column has pin holes at both its upper and lower ends, and each pin hole is fitted with a pin. When the lower end of the steel column is inserted into the blind hole in the lower base plate, the pin hole at the lower end of the steel column is located between the top plate and the bottom plate of the lower base plate, and the upper end face of the pin contacts the lower end face of the top plate of the lower base plate when the pin is inserted into the pin hole at the lower end of the steel column. When the upper end of the steel column is inserted into the blind hole in the upper cover plate, the pin hole at the upper end of the steel column is located between the bottom plate and the top plate of the upper cover plate, and the lower end face of the pin contacts the upper end face of the bottom plate of the upper cover plate when the pin is inserted into the pin hole at the upper end of the steel column.

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