A kind of assembled floor structure with fireproof performance and installation method

Abstract

The present invention discloses an assembled floor structure with fireproof performance and an installation method, which relates to the technical field of assembled floor, and comprises a floor and a column, wherein one side of the floor is provided with an installation groove, and one end of the column can extend into the installation groove; a guide component, which is arranged at the opening of the installation groove and is used to guide the column to extend into the installation groove; a fixing component, which is arranged above the guide component and is used to pre-fix the column; and an adjusting component, which is arranged between the guide component and the fixing component and is used to control the movement of the fixing component. The present invention can improve the stability of the floor installed on the column, and can also improve the fireproof performance of the floor.

Description

Technical Field

[0001] The present invention relates to the technical field of assembled floor slabs, and in particular to an assembled floor slab structure with fireproof performance and an installation method thereof. Background Art

[0002] Prefabricated construction is a construction method in which the building components that make up the building structure are produced in a factory, then transported to the construction site, and assembled to connect the building components to the main building to form a building structure.

[0003] Chinese patent application number 202211083177.3 discloses an assembled floor structure, including a floor, a mounting groove for inserting a column at the bottom of the floor, and a sealing assembly for sealing the gap between the notch of the mounting groove and the side wall of the column. The side walls of the mounting groove are respectively provided with connecting plates near the notch, and the adjacent connecting plates are connected to each other. The floor is provided with connecting cables located in the mounting groove and staggered and crossed, and each of the connecting cables is respectively connected to the tops of two opposite connecting plates. A card slot for the connecting cable to be fully inserted is provided on the top of the column. Although this solution can maintain the floor to a certain extent, However, before pouring, since the columns are not in full contact with the floor slab, the floor slab is installed on the columns only through a few connecting locks. This installation method is not only prone to cause great friction between the connecting locks and the columns, but also prone to problems of loose installation. After pouring, the connecting locks are also prone to great pressure, which makes the columns and floor slabs not installed firmly. In addition, during the installation process, there is no guidance for the floor slab to be better installed on the columns. The staff needs to constantly adjust the position of the floor slab for installation, which increases the workload of the staff. Moreover, prefabricated floors similar to those in the above-mentioned technologies generally do not have fire resistance and are limited in scope of use.

[0004] Therefore, an assembled floor structure with fireproof performance and an installation method are invented to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a prefabricated floor structure with fireproof performance and an installation method, which can effectively solve the technical problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a prefabricated floor structure with fireproof performance, comprising a floor and a column, wherein one side of the floor is provided with an installation groove, and one end of the column can extend into the installation groove, and further comprising:

[0007] A guide assembly, the guide assembly is arranged at the opening of the installation groove, and is used to guide the column to extend into the installation groove. The guide assembly includes a plurality of guide rods arranged at intervals along the circumference of the installation groove, each of the guide rods is fixedly connected to the floor slab, and a plurality of guide plates corresponding to the guide rods are arranged at the opening of the installation groove, each of the guide plates is provided with a clearance groove, and each of the guide rods is located in the corresponding clearance groove;

[0008] A fixing assembly, which is arranged above the guide assembly and is used to pre-fix the column;

[0009] An adjusting component is arranged between the guiding component and the fixing component and is used for controlling the movement of the fixing component.

[0010] Preferably, the fixing assembly includes a plurality of slides corresponding to the guide plates and slidably connected to the side walls of the mounting grooves, one end of each of the slides is hinged with a connecting rod, and the free end of each connecting rod is hinged to the corresponding guide plate. A plurality of fixing plates corresponding to the slides are slidably connected in the floor slab, and each of the fixing plates is provided with a slot on a side facing the slide, and each of the slides can slide in the corresponding slot.

[0011] Preferably, each of the slide plates is provided with a release groove on one side close to the fixed plate, each of the fixed plates can slide along the corresponding release groove, and one end of the fixed plate away from the installation groove is connected to the floor through an elastic member.

[0012] Preferably, the adjustment assembly includes a support plate located between the plurality of guide plates, the support plate is provided with a plurality of first avoidance grooves corresponding to the guide plates, and each guide plate is fixedly connected to one end close to the support plate with two avoidance blocks.

[0013] Preferably, each of the avoidance blocks is provided with a second avoidance groove, and two of the second avoidance grooves on the same guide plate are slidably connected with a guide rod located between the two avoidance blocks, and each of the guide rods is located in the corresponding first avoidance groove.

[0014] Preferably, a positioning groove corresponding to the shape of the support plate is formed on one end surface of the column close to the installation groove, and the thickness of the support plate is smaller than the depth of the positioning groove.

[0015] Preferably, a plurality of fixing grooves corresponding to the fixing plates are provided on the side surfaces of the columns, and each of the fixing plates can extend into the corresponding fixing grooves. A slot is provided on each of the guide plates, and each of the fixing plates can pass through the corresponding slots.

[0016] Preferably, a sealing plate with a frame shape and an L-shaped longitudinal cross-section is provided on the outer periphery of the column, each of the fixed plates is provided with a channel running through it along its length direction, a plurality of filling grooves corresponding to and connected to the fixed grooves are provided in the column, the lower end of each filling groove corresponds to the sealing plate, and a vertical injection groove connected to one of the channels is provided on the floor slab.

[0017] Preferably, a grouting hole connected to the installation groove is provided on the floor slab, and an overflow hole located on one side of the grouting hole and connected to the installation groove is provided on the floor slab.

[0018] A method for installing a prefabricated floor slab with fire resistance is also provided, comprising the following steps:

[0019] S1: Move the floor slab to the top of the column;

[0020] S2: moving the floor slab downward, the upright column contacts the guide plate, and the guide plate guides the floor slab to adjust its position;

[0021] S3: After the upright post is extended into the installation groove, the guide plate changes from an inclined state to a vertical state, and the support plate is installed into the positioning groove;

[0022] S4: Slide the floor slab downward to the limit position, the fixing plate, the fixing groove and the slot are in the same horizontal state, so that the fixing plate extends into the fixing groove through the slot;

[0023] S5: injecting fireproof material into the sealing plate through the injection groove, the channel and the filling groove to seal the gap between the column and the floor slab, thereby increasing the fireproof performance of the floor slab structure;

[0024] S6: Add cement slurry into the installation groove through the grouting hole. When the cement slurry overflows from the overflow hole, no more cement slurry is added to complete the casting and installation connection.

[0025] Technical effects and advantages of the present invention:

[0026] 1. The present invention provides a guide plate so that when the floor moves downward, the guide plate can guide the position of the floor to be adjusted under the action of the column, which is convenient for adjusting the position of the floor by oneself, so that the column can be better inserted into the installation groove on the floor for installation, further improving the efficiency of installing the floor and reducing the workload of the staff.

[0027] 2. In the process of the guide plate driving the sliding plate to slide via the connecting rod, the present invention allows the fixing plate to pass through the slot and be inserted into the fixing groove, so that the fixing plate pre-fixes the floor slab on the column, and under the coordinated action of the support plate, the guide plate and the fixing plate, the floor slab can be pre-fixed on the column more stably, and the guide plate can also seal the gap between the installation groove and the column, which is convenient for better pouring in the later stage, thereby improving the stability of the floor slab installed on the column, and further improving the efficiency and quality of installing the floor slab.

[0028] 3. The present invention injects fireproof materials into the gap between the columns and the floor slabs, which not only improves the sealing between the columns and the floor slabs and avoids the problem of cement slurry flowing out of the gap between the columns and the floor slabs during pouring, but also fully improves the fireproof performance of the floor slab structure. At the same time, it can also ensure the stability of the fixing plates and elastic parts to the floor slabs, and fully improve the fireproof performance of the floor slab structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall schematic diagram of the present invention;

[0030] Figure 2 It is a structural cross-sectional view of the present invention in an uninstalled state;

[0031] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0032] Figure 4 This is a schematic top view of the structure after the floor slab is removed in the present invention;

[0033] Figure 5 It is a structural schematic diagram of the guide assembly and the fixing assembly of the present invention;

[0034] Figure 6 It is a structural cross-sectional view of the installation state of the present invention;

[0035] Figure 7 For the present invention Figure 6 A partial enlarged view of point B in the middle;

[0036] Figure 8 This is an expanded view of the installation state structure without the floor slab in the present invention.

[0037] In the figure: 1. floor; 2. column; 3. installation groove; 4. guide assembly; 401. guide rod; 402. guide plate; 403. give way groove; 5. fixing assembly; 501. slide plate; 502. connecting rod; 503. fixing plate; 504. slot; 505. release slot; 506. elastic member; 507. fixing slot; 6. adjustment assembly; 601. support plate; 602. first avoidance groove; 603. avoidance block; 604. second avoidance groove; 605. guide rod; 7. positioning groove; 8. slot; 9. grouting hole; 10. overflow hole; 11. sealing plate; 12. channel; 13. filling groove; 14. injection groove. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the process of installing the floor slab 1 on the column 2, the staff needs to repeatedly adjust the position of the floor slab 1 to adapt to the position of the column 2 so that the floor slab 1 can be installed on the column 2 more accurately. This not only increases the workload of the staff, but also reduces the installation efficiency. This embodiment is specially invented to solve the above problems.

[0040] like Figure 1-Figure 4 As shown, an assembled floor structure with fireproof performance according to an embodiment of the present invention includes a floor 1 and a column 2, a mounting groove 3 is opened on one side of the floor 1, one end of the column 2 can extend into the mounting groove 3, a guide component 4 is arranged at the opening of the mounting groove 3, and is used to guide the column 2 to extend into the mounting groove 3, the guide component 4 includes a plurality of guide rods 401 arranged at intervals along the circumference of the mounting groove 3, each guide rod 401 is fixedly connected to the floor 1, a plurality of guide plates 402 corresponding to the guide rods 401 are arranged at the opening of the mounting groove 3, each guide plate 402 is opened with a clearance groove 403, and each guide rod 401 is located in the corresponding clearance groove 403.

[0041] When in use, first lift the floor slab 1 to the position above the column 2, and slowly move the floor slab 1 downward. During the downward sliding of the floor slab 1, the guide plates 402 on the floor slab 1 gradually contact the column 2. Since the multiple guide plates 402 are in an inclined state and the distance between the upper ends of the multiple guide plates 402 is smaller than the distance between the lower ends thereof in the initial state, after the side of the guide plates 402 contacts the column 2, under the action of the column 2, the multiple guide plates 402 gradually swing from the inclined state to the vertical state along the guide rod 401, and the side of the guide plates 402 contacts the side of the column 2, so that the multiple guide plates 402 better guide the column 2 to extend into the installation groove 3 on the floor slab 1, and the floor slab 1 is installed on the column 2 through the installation groove 3. Through the provision of the guide plates 402, the position of the floor slab 1 can be more conveniently adjusted during the downward movement of the floor slab 1, so that the column 2 can be better inserted into the installation groove 3 on the floor slab 1 for installation, thereby further improving the efficiency of installing the floor slab 1 and reducing the workload of the installer.

[0042] In the prior art, after the floor slab 1 is installed on the column 2, since the column 2 is not in full contact with the floor slab 1, the floor slab 1 is only installed on the column 2 through a few connecting locks. This installation method not only easily causes a lot of friction between the connecting locks and the column 2, but also easily leads to the problem of loose installation. After pouring, the connecting locks are also easily subjected to a lot of pressure, making the column 2 and the floor slab 1 not installed firmly. Therefore, further improvements are made based on the above embodiment.

[0043] like Figure 2-Figure 8 As shown, the fixing assembly 5 is arranged above the guide assembly 4 and is used to pre-fix the column 2. The fixing assembly 5 includes a plurality of slide plates 501 corresponding to the guide plate 402 and slidably connected to the side wall of the installation groove 3. One end of each slide plate 501 is hinged with a connecting rod 502, and the free end of each connecting rod 502 is hinged with the corresponding guide plate 402. A plurality of fixing plates 503 corresponding to the slide plates 501 are slidably connected in the floor slab 1. Each fixing plate 503 is provided with a slot 504 on the side facing the slide plate 501, and each slide plate 501 can slide in the corresponding slot 504. A release slot 505 is provided on the side of each slide plate 501 close to the fixing plate 503, and each fixing plate 503 can slide along the corresponding release slot 505. One end of the fixing plate 503 away from the installation groove 3 is connected to the floor slab 1 through an elastic member 506. A plurality of fixing slots 507 corresponding to the fixing plate 503 are provided on the side of the column 2, and each fixing plate 503 can extend into the corresponding fixing slot 507.

[0044] The adjusting component 6 is arranged between the guiding component 4 and the fixing component 5, and is used to control the movement of the fixing component 5. The adjusting component 6 includes a supporting plate 601 located between the plurality of guiding plates 402, and the supporting plate 601 is provided with a plurality of first avoiding grooves 602 corresponding to the guiding plates 402. One end of each guiding plate 402 close to the supporting plate 601 is fixedly connected with two avoiding blocks 603, and each avoiding block 603 is provided with a second avoiding groove 604. The two second avoiding grooves 604 on the same guiding plate 402 are slidably connected with two avoiding blocks 603 located at the two avoiding grooves 604. A guide rod 605 is provided between the avoidance blocks 603, each guide rod 605 is located in the corresponding first avoidance groove 602, a positioning groove 7 corresponding to the shape of the support plate 601 is provided on one end surface of the column 2 close to the installation groove 3, the thickness of the support plate 601 is less than the depth of the positioning groove 7, a slot 8 is provided on each guide plate 402, each fixing plate 503 can pass through the corresponding slot 8, a grouting hole 9 connected to the installation groove 3 is provided on the floor 1, and an overflow hole 10 located on one side of the grouting hole 9 and connected to the installation groove 3 is provided on the floor 1.

[0045] During use, as the floor 1 continues to move downward and the upper end of the column 2 contacts the lower end surface of the mounting groove 3, the floor 1 drives the multiple guide plates 402 to move downward along the column 2, and the multiple guide plates 402 gradually swing from an inclined state to a vertical state along the guide rod 401, and a second avoidance groove 604 is provided on the avoidance block 603 and a first avoidance groove 602 is provided on the support plate 601, so that the guide plate 402 drives the guide rod 605 to slide outward along the first avoidance groove 602 through the second avoidance groove 604 on the avoidance block 603, so that the guide rod 401 and the guide rod 605 are in the same vertical state. At this time, the multiple guide plates 402 are in a vertical state and fit against the side of the column 2, and at the same time, the guide plate 402 drives the slide plate 501 to slide upward along the mounting groove 3 for a distance through the corresponding connecting rod 502.

[0046] As the floor 1 continues to move downward, when the support plate 601 moves into the positioning groove 7, and the shapes of the support plate 601 and the positioning groove 7 are both cross-shaped, the floor 1 continues to move downward. Under the action of the column 2, the support plate 601 moves into the installation groove 3 relative to the floor 1. The support plate 601 drives the guide plate 402 to move into the installation groove 3 through the first avoidance groove 602, the second avoidance groove 604, the guide rod 605 and the avoidance block 603. The guide rod 401 slides downward along the avoidance groove 403. At this time, the guide plate 402 drives the slide plate 501 to slide upward along the installation groove 3 through the connecting rod 502, so that the slide plate 501 slides upward along the card groove 504 on the fixed plate 503.

[0047] When the upper end surface of the column 2 contacts the lower end surface of the installation groove 3, the support plate 601 drives the guide plate 402 to slide into the installation groove 3 through the first avoidance groove 602, the second avoidance groove 604, the guide rod 605 and the avoidance block 603, and the guide plate 402 is an inverted L-shape, which can block the gap between the installation groove 3 and the column 2. At the same time, the guide plate 402 drives the slide plate 501 to slide upward to the limit position through the connecting rod 502. At this time, the fixed plate 503 is located in the release groove 505 on the slide plate 501, and the fixed plate 503 is fixed to the bottom of the slide plate 501. The plate 503, the slot 8 and the fixing slot 507 are at the same level. Under the action of the elastic member 506, the elastic member 506 drives the fixing plate 503 to slide along the release slot 505 toward the installation slot 3, so that the fixing plate 503 passes through the slot 8 and is inserted into the fixing slot 507 on the column 2. At this time, the floor 1 is pre-fixed on the column 2 through multiple fixing plates 503, and under the coordinated action of the support plate 601, the guide plate 402 and the fixing plate 503, the floor 1 can be pre-fixed on the column 2 more stably.

[0048] After the pre-fixing of the floor slab 1 is completed, when grouting is required, cement slurry is added to the installation groove 3 through the grouting hole 9 for pouring, and under the action of the positioning groove 7 and the guide plate 402, the cement slurry flowing into the installation groove 3 can fully contact and pour the components between the installation groove 3 and the column 2. When cement slurry overflows from the overflow hole 10, cement slurry is no longer injected into the installation groove 3. Then, the cement slurry in the installation groove 3 is waited for to solidify and the pouring is completed, and finally the floor slab 1 is stably installed on the column 2.

[0049] By driving the slide plate 501 to slide through the connecting rod 502 on the guide plate 402, the fixing plate 503 passes through the slot 8 and is inserted into the fixing slot 507, so that the fixing plate 503 pre-fixes the floor 1 on the column 2, and under the coordinated action of the support plate 601, the guide plate 402 and the fixing plate 503, the floor 1 can be pre-fixed on the column 2 more stably, and the guide plate 402 can also seal the gap between the installation slot 3 and the column 2, which is convenient for better pouring in the later stage, thereby improving the stability of the floor 1 installed on the column 2, and further improving the efficiency and quality of installing the floor slab 1.

[0050] After the gap between the column 2 and the floor slab 1 is sealed by the guide plate 402, a small gap will generally still exist, which will cause the problem of cement slurry flowing out; and if only fire protection treatment is applied to the floor slab 1, the fire protection performance of the overall structure is still not ideal, so further improvements are made based on the above embodiment.

[0051] like Figure 6-Figure 7As shown, a sealing plate 11 with a frame shape and an L-shaped longitudinal cross-section is provided on the outer periphery of the column 2, a channel 12 running through the fixed plate 503 along its length direction is provided in each fixed plate 503, a plurality of filling grooves 13 corresponding to and connected with the fixed grooves 507 are provided in the column 2, and the lower end of each filling groove 13 corresponds to the sealing plate 11, and a vertical injection groove 14 connected with one of the channels 12 is provided on the floor slab 1.

[0052] During use, when the column 2 is located at the extreme position in the installation groove 3 on the floor 1, the upper end surface of the sealing plate 11 is tightly connected to the lower end surface of the floor 1, so that a closed space is formed between the floor 1 and the column 2 through the sealing plate 11, and the lower end of the filling groove 13 is connected to the closed space. At this time, before pouring, firstly, refractory material is injected into the sealing plate 11 through the injection groove 14, the fixing plate 503 and the filling groove 13 (for example, high-pressure injection of refractory foaming material is adopted), so that the refractory material fills the closed space between the column 2, the floor 1 and the sealing plate 11, and at the same time, the refractory material can flow into other fixing grooves 507 and channels 12 through the filling groove 13, so that the refractory material can be completely filled into all the fixing grooves 507 and channels 12. On the one hand, the refractory material can fill the floor 1 and the column 2, the sealing plate 1 1, and further fill the gap between the floor slab 1 and the column 2 to prevent cement slurry from seeping out during the pouring process and affecting the pouring effect, thereby improving the pouring quality; on the other hand, the fireproof material filled in the confined space can improve the fire resistance of the connection between the floor slab 1 and the column 2, and ensure the stability of the entire structure; further, in the process of filling the refractory material, the fixed plate 503 and the elastic member 506 are also filled with refractory material, which improves their fire resistance, which is beneficial to the improvement of the fire resistance and stability of the overall structure.

[0053] On the basis of the above embodiment, this embodiment further provides a method for installing a prefabricated floor with fireproof performance, comprising the following steps:

[0054] S1: Move the floor 1 to the top of the column 2;

[0055] S2: the floor 1 is moved downward, the column 2 contacts the guide plate 402, and the guide plate 402 guides the floor 1 to adjust its position;

[0056] S3: After the upright post 2 is inserted into the installation groove 3, the guide plate 402 is changed from an inclined state to a vertical state, and the support plate 601 is installed into the positioning groove 7;

[0057] S4: Slide the floor 1 downward to the limit position, the fixing plate 503, the fixing groove 507 and the slot 8 are in the same horizontal state, so that the fixing plate 503 extends into the fixing groove 507 through the slot 8;

[0058] S5: injecting fireproof material into the sealing plate 11 through the injection groove 14, the channel 12 and the filling groove 13 to seal the gap between the column 2 and the floor slab 1, thereby increasing the fireproof performance of the floor slab 1 structure;

[0059] S6: Add cement slurry into the installation groove 3 through the grouting hole 9. When the cement slurry overflows from the overflow hole 10, no more cement slurry is added to complete the pouring installation connection.

[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A prefabricated floor structure with fireproof performance, comprising a floor (1) and a column (2), wherein one side of the floor (1) is provided with a mounting groove (3), and one end of the column (2) can extend into the mounting groove (3), characterized in that: Also includes: A guide assembly (4), the guide assembly (4) being arranged at the opening of the installation groove (3) and used for guiding the column (2) to extend into the installation groove (3), the guide assembly (4) comprising a plurality of guide rods (401) arranged at intervals along the circumference of the installation groove (3), each of the guide rods (401) being fixedly connected to the floor slab (1), a plurality of guide plates (402) corresponding to the guide rods (401) being arranged at the opening of the installation groove (3), each of the guide plates (402) being provided with a clearance groove (403), and each of the guide rods (401) being located in the corresponding clearance groove (403); A fixing assembly (5), the fixing assembly (5) being arranged above the guide assembly (4) and used for pre-fixing the column (2), the fixing assembly (5) comprising a plurality of slide plates (501) corresponding to the guide plates (402) and slidably connected to the side walls of the mounting grooves (3), one end of each of the slide plates (501) being hinged to a connecting rod (502), a free end of each of the connecting rods (502) being hinged to the corresponding guide plate (402), a plurality of fixing plates (503) corresponding to the slide plates (501) being slidably connected in the floor slab (1), a slot (504) being provided on a side of each of the fixing plates (503) facing the slide plate (501), and each of the slide plates (501) being capable of sliding in the corresponding slot (504); A release groove (505) is provided on a side of each of the slide plates (501) close to the fixed plate (503), and each of the fixed plates (503) is capable of sliding along the corresponding release groove (505), and an end of the fixed plate (503) away from the installation groove (3) is connected to the floor slab (1) via an elastic member (506); an adjusting component (6), the adjusting component (6) being arranged between the guiding component (4) and the fixing component (5) and being used for controlling the movement of the fixing component (5); The adjustment assembly (6) comprises a support plate (601) located between the plurality of guide plates (402), the support plate (601) being provided with a plurality of first avoidance grooves (602) corresponding to the guide plates (402), and each guide plate (402) having one end close to the support plate (601) fixedly connected to two avoidance blocks (603); A second avoidance groove (604) is provided on each of the avoidance blocks (603); a guide rod (605) located between the two avoidance blocks (603) is slidably connected in two of the second avoidance grooves (604) on the same guide plate (402); and each of the guide rods (605) is located in the corresponding first avoidance groove (602).

2. The assembled floor structure according to claim 1, characterized in that: A positioning groove (7) corresponding to the shape of the support plate (601) is provided on one end surface of the column (2) close to the installation groove (3), and the thickness of the support plate (601) is smaller than the depth of the positioning groove (7).

3. The assembled floor structure according to claim 2, characterized in that: A plurality of fixing grooves (507) corresponding to the fixing plates (503) are provided on the side surfaces of the upright posts (2), and each of the fixing plates (503) can extend into the corresponding fixing groove (507). A slot (8) is provided on each of the guide plates (402), and each of the fixing plates (503) can pass through the corresponding slot (8).

4. The assembled floor structure according to claim 3 is characterized in that: The outer periphery of the column (2) is provided with a sealing plate (11) of frame shape and L-shaped in longitudinal cross section, each of the fixing plates (503) is provided with a channel (12) penetrating along its length direction, the column (2) is provided with a plurality of filling grooves (13) corresponding to the fixing grooves (507) and connected to the fixing grooves (507), the lower end of each filling groove (13) corresponds to the sealing plate (11), and the floor slab (1) is provided with a vertical injection groove (14) connected to one of the channels (12).

5. The assembled floor structure according to claim 4, characterized in that: The floor slab (1) is provided with a grouting hole (9) which is in communication with the installation groove (3), and the floor slab (1) is provided with a grouting hole (10) which is located on one side of the grouting hole (9) and in communication with the installation groove (3).

6. A method for installing a prefabricated floor with fireproof performance, using the prefabricated floor structure according to claim 5, characterized in that: The following steps are involved: S1: moving the floor slab (1) to above the column (2); S2: the floor slab (1) is moved downward, the upright column (2) contacts the guide plate (402), and the guide plate (402) guides the floor slab (1) to adjust its position; S3: After the upright post (2) extends into the installation groove (3), the guide plate (402) changes from an inclined state to a vertical state, and the support plate (601) is installed into the positioning groove (7); S4: sliding the floor slab (1) downward to an extreme position, so that the fixing plate (503), the fixing groove (507) and the slot (8) are in the same horizontal state, so that the fixing plate (503) extends into the fixing groove (507) through the slot (8); S5: injecting fireproof material into the sealing plate (11) through the injection groove (14), the channel (12) and the filling groove (13), thereby sealing the gap between the column (2) and the floor slab (1), and improving the fireproof performance of the floor slab (1) structure; S6: Add cement slurry into the installation groove (3) through the grouting hole (9); when the cement slurry overflows from the overflow hole (10), no more cement slurry is added, and the pouring installation connection is completed.

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