Thickened raised floor

Abstract

A thickened raised floor comprises a ceiling having a ground side and a honeycomb side opposite to each other; the rib structure comprises first to seventh ribs which are at least 25mm in height and serve as main ribs; wherein the thickness of the top plate in each concave area defined by the two fourth ribs and the two fifth ribs and the thickness of the top plate in each concave area defined by the fourth ribs, the fifth ribs and the two seventh ribs are larger than the thickness of the top plate in the other concave areas, and a plurality of blind holes located on the honeycomb side are formed in the top plate in each concave area. Therefore, the structural strength and the bearing capacity of the thickened raised floor are improved, and the thickened raised floor can bear heavy machine equipment with increasing weight in the semiconductor technology.

Description

Technical Field

[0001] The invention relates to a floor, in particular to a thickened elevated floor with a rib structure. Background Art

[0002] In the clean rooms of current semiconductor factories, in order to take into account the placement of machines, the layout of various pipelines, and the requirements for ventilation and cleanliness, the floors are all made of elevated floors that can bear weight and are not easy to produce particles. This allows the floor to support the machines while avoiding particle pollution and maintaining air quality.

[0003] However, as the size of wafers increases and the process becomes more complex, the size and weight of the equipment also increase, making the structural strength of the existing raised floor unable to withstand those heavier equipment.

[0004] In addition, when machines need to be placed in a high-tech factory, the ground corresponding to the machine position can be installed with a heavier load-bearing floor, while the floors at other locations can be installed with a smaller load-bearing and relatively lighter floor, thereby reducing the assembly cost and the overall weight. However, floors of different weights or thicknesses have different heights. Traditionally, elevated floors of the same height are used so that the surface of the elevated floor after assembly can remain flat. Therefore, how to maintain the overall surface flatness of the elevated floor after assembling floors of different loads and heights, and avoid affecting the convenience and safety of moving people and transporting goods on the elevated floor due to uneven surfaces has become a problem that the existing elevated floors need to overcome urgently.

[0005] Therefore, the present invention is to overcome the above-mentioned problems of the prior art and develop a thickened elevated floor. Utility Model Content

[0006] In view of the various defects of the above-mentioned prior art, the present invention provides a thickened elevated floor, comprising: a top plate having a ground side and a honeycomb side opposite to each other; and a rib structure, which is arranged on the honeycomb side of the top plate to form a plurality of recessed areas, the rib structure comprising a first rib, a second rib, a third rib, a fourth rib, a fifth rib, a sixth rib and a seventh rib arranged in sequence from the edges of the top plate to the center, and the first rib to the seventh rib are main ribs, and their height relative to the honeycomb side is at least 25 mm; wherein the thickness of the top plate in each of the recessed areas surrounded by each pair of parallel and adjacent fourth ribs, the fifth ribs and each pair of parallel and adjacent fourth ribs and the fifth ribs perpendicular thereto and in each of the recessed areas surrounded by each pair of parallel and adjacent fourth ribs, the fifth ribs and two adjacent seventh ribs is greater than the thickness of the top plate in the remaining plurality of recessed areas and is respectively provided with a plurality of blind holes located on the honeycomb side.

[0007] In the aforementioned thickened elevated floor, the plurality of recessed areas are arranged in an array to form a honeycomb structure on the honeycomb side.

[0008] In the aforementioned thickened elevated floor, each of the first ribs is formed at the edge of the top plate and surrounds the frame of the thickened elevated floor.

[0009] In the aforementioned thickened elevated floor, each first rib includes two first side end sections respectively adjacent to its two ends and a first middle section sandwiched between the two first side end sections, and the height of the first middle section is higher than the height of the two first side end sections.

[0010] In the aforementioned thickened elevated floor, the intersection of the first middle section and the two first side end sections is respectively adjacent to the intersection of the first rib and the two third ribs where they are located.

[0011] In the aforementioned thickened elevated floor, the sum of the maximum height of the first rib relative to the honeycomb side of the top plate and the thickness of the top plate is at least 73 mm, and the thickness of the top plate is at least 4 mm.

[0012] In the aforementioned thickened elevated floor, the width of the first rib is 5 to 12 mm.

[0013] In the aforementioned thickened elevated floor, the heights of the second to seventh ribs relative to the honeycomb side of the top plate are 25 to 55 mm.

[0014] In the aforementioned thickened elevated floor, each second rib includes two second side end sections respectively adjacent to its two ends and a second middle section sandwiched between the two second side end sections, and the height of the second middle section is higher than the height of the two second side end sections.

[0015] In the aforementioned thickened elevated floor, the intersection of the second middle section and the two second side end sections is respectively adjacent to the intersection of the second rib and the two fifth ribs where they are located.

[0016] In the aforementioned thickened elevated floor, the height of each fourth rib between the area surrounded by two third ribs and two fifth ribs adjacent to each corner of the top plate and between every two adjacent seventh ribs is higher than its height outside the multiple areas.

[0017] In the aforementioned thickened elevated floor, the width of the second to seventh ribs is 3 to 6 mm.

[0018] In the aforementioned thickened elevated floor, the rib structure further comprises a plurality of auxiliary ribs with a height less than 25 mm, and a plurality of the auxiliary ribs are disposed in the plurality of recessed areas between the adjacent second ribs, third ribs, fourth ribs, fifth ribs, sixth ribs and seventh ribs.

[0019] In the aforementioned thickened elevated floor, except for the multiple auxiliary ribs in the area surrounded by the four seventh ribs which are staggered in a cross shape, the multiple auxiliary ribs in the remaining areas extend along a single direction, so that multiple recesses are formed between the multiple main ribs and the multiple auxiliary ribs.

[0020] In the aforementioned thickened elevated floor, nine blind holes are provided in the multiple recessed areas surrounded by the two fourth ribs and the two fifth ribs adjacent to the corners of the top plate, and in the recessed areas surrounded by the fourth rib, the fifth rib and the two adjacent seventh ribs adjacent to the sides of the top plate, and the nine blind holes are arranged in the multiple recessed portions.

[0021] In the aforementioned thickened elevated floor, the height of the auxiliary rib relative to the honeycomb side of the top plate is at least 6 mm, and the width thereof is at least 2.5 mm.

[0022] In the aforementioned thickened elevated floor, the four seventh ribs in the rib structure are arranged in a tic-tac-toe shape to divide the thickened elevated floor into four areas adjacent to the four corners of the top plate, and 25 sub-areas are formed between the adjacent second ribs, the third ribs, the fourth ribs, the fifth ribs and the sixth ribs in the four areas, each of which has a recessed area, and a wing plate is formed around the top plate, and the thickness of the wing plate and the thickness of the top plate in the recessed area surrounded by the four seventh ribs are both greater than the thickness of the top plate in the 25 sub-areas.

[0023] As can be seen from the above, the thickened elevated floor of the present invention is mainly improved in structural strength by having a rib structure of a plurality of main ribs with a height of 25 to 73 mm relative to the honeycomb side, so that it can bear, for example, a heavier machine equipment weighing more than 3150 kg (the bearing weight of 3150 kg refers to the bearing load under which the bending amount of the thickened elevated floor does not exceed 2 mm), and its breaking strength can reach more than 6100 kg. At the same time, by having each first rib, each second rib and each fourth rib having a higher height only in a portion of the section with a larger load, and having some main ribs having a thicker thickness in the portion with a larger load, and providing a plurality of blind holes in some of the recessed areas, the overall weight of the floor can be reduced, and the material cost and the burden on the lower floor slab can be reduced without reducing its structural strength. Therefore, compared with the prior art, the thickened elevated floor of the present invention can bear heavier equipment without significantly increasing its own weight, and after being assembled with floors of different heights, the surface of the entire elevated floor can still be maintained on the same horizontal plane to achieve the surface flatness requirement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A It is a three-dimensional schematic diagram of an embodiment of the thickened elevated floor of the present invention.

[0025] Figure 1B for Figure 1A Main view plan.

[0026] Figure 1C and Figure 1C-1 Along Figure 1B Cross-sectional view of section line CC and C'-C'.

[0027] Figure 1D for Figure 1A A three-dimensional schematic diagram from another perspective.

[0028] The reference numerals are as follows:

[0029] 1 Thickened raised floor

[0030] 1a Rib structure

[0031] 1d Wing

[0032] 10 top boards

[0033] 10a Ground side

[0034] 10b Hive side

[0035] 11 first rib

[0036] 11a Support seat

[0037] 11c First middle section

[0038] 11s first lateral segment

[0039] 12 Second rib

[0040] 12c Second middle section

[0041] 12s second lateral segment

[0042] 13 Third rib

[0043] 14 Fourth rib

[0044] 15 Fifth rib

[0045] 16 Sixth rib

[0046] 17 Seventh rib

[0047] 18 Auxiliary ribs

[0048] 19a Blind hole

[0049] Width of d1~d8,d4',d7'

[0050] HTotal height

[0051] h1~h8,h1',h2',h4'height

[0052] L Length

[0053] R recess

[0054] S Depression

[0055] t0,t0',t0",t1 thickness

[0056] td Depth

[0057] w Separation distance DETAILED DESCRIPTION

[0058] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0059] It should be noted that the structures, proportions, sizes, etc. shown in the attached drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those skilled in the art, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be produced by the present invention, should still fall within the scope of the technical contents disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical contents.

[0060] Figures 1A to 1D Schematic diagram of an embodiment of a thickened elevated floor 1 of the present invention. The thickened elevated floor 1 of this embodiment is used to bear a heavier load, and its bearing load can reach at least 3150 kg.

[0061] The thickened elevated floor 1 comprises a top plate 10 and a rib structure 1 a disposed on the top plate 10 .

[0062] The top plate 10 has a ground side 10 a and a honeycomb side 10 b opposite to each other, and the ground side 10 a is a flat surface, and the rib structure 1 a is disposed on the honeycomb side 10 b.

[0063] In this embodiment, the top plate 10 is rectangular, and its thickness t0 is 4 mm except for a part of the area. A wing plate 1d is formed around the top plate 10, so that the length L of each side of the top plate 10 together with the wing plates 1d on both sides is 600 mm. The thickness t1 of the wing plate 1d is 6 mm, that is, the thickness t1 of the wing plate 1d is greater than the thickness t0 of the top plate 10.

[0064] The rib structure 1a includes a rib structure extending from each edge of the top plate 10 to the middle thereof (i.e. Figure 1B Left and right sides and top and bottom sides facing the middle direction, or Figure 1C and Figure 1C-1 The first rib 11, the second rib 12, the third rib 13, the fourth rib 14, the fifth rib 15, the sixth rib 16 and the seventh rib 17 are arranged in sequence, so that the first to seventh ribs 11 to 17 on the two opposite sides are bilaterally symmetrical (or as shown in FIG. Figure 1B The ribs 10a, 10b, 10b are symmetrically distributed on the honeycomb side 10b, and the spacing distance w between the centers of every two adjacent second ribs 12, third ribs 13, fourth ribs 14, fifth ribs 15, sixth ribs 16 and seventh ribs 17 is 48 mm.

[0065] The first to seventh ribs 11-17 are used as main ribs, and the heights h1-h7 of the first to seventh ribs 11-17 relative to the honeycomb side 10b are at least 25 mm. Since the first to seventh ribs 11-17 as main ribs are arranged in the same manner in the longitudinal and transverse directions, Figure 1C Only the cross section of the longitudinal rib structure 1a is shown as an example.

[0066] In this embodiment, each of the first ribs 11 is formed at the edge of the top plate 10, and the four first ribs 11 on the four sides are connected to each other and surround to form the frame of the thickened elevated floor 1. In addition, each of the first ribs 11 includes two first side end sections 11s respectively adjacent to the two ends thereof and a first middle section 11c sandwiched between the two first side end sections. The intersection of the first middle section 11c and the two first side end sections 11s is respectively adjacent to the intersection of the first rib 11 and the two third ribs 13, and the height of the first middle section 11c is higher than the height of the two first side end sections 11s. The lower height of the first side end section 11s is to avoid interference during the construction and installation of the crossbeam (not shown).

[0067] For example, the height h1 of the first middle section 11c of the first rib 11 relative to the honeycomb side 10b is 69mm, and the height h1' of the first side end section 11s relative to the honeycomb side 10b is 57mm, and an L-shaped support seat 11a is formed at the four corners of the two ends of the plurality of first ribs 11 of the thickened elevated floor 1. The four L-shaped support seats 11a of the thickened elevated floor 1 are respectively supported and fixed on the support plate (not shown) of the foot frame of the thickened elevated floor 1. That is, the height h1 of the first middle section 11c of the first rib 11 relative to the honeycomb side 10b is greater than the height h1' of the first side end section 11s relative to the honeycomb side 10b and the heights h2 to h7 of the second to seventh ribs 12 to 17 relative to the honeycomb side 10b. The sum of the height of the first middle section 11c of the first rib 11 and the top plate 10 below (i.e., the thickness t0 of the top plate 10), that is, the total height H of the center of the first rib 11 relative to the ground side 10a is 73mm (i.e., H=h1+t0), that is, the height of this thickened elevated floor 1 is 73mm. Because the L-shaped support bases 11a at the four corners form a groove, the thickened elevated floor 1 can be assembled with other elevated floors with lower load-bearing weight and lower height, and the surface of the entire elevated floor can still be maintained at the same level.

[0068] Similarly, each second rib 12 includes two second side end sections 12s respectively adjacent to the two ends thereof and a second middle section 12c sandwiched between the two second side end sections 12s. The intersection of the second middle section 12c and the two second side end sections 12s is respectively adjacent to the intersection of the second rib 12 and the two fifth ribs 15. The height h2 of the second middle section 12c is higher than the height h2' of the two second side end sections 12s.

[0069] Furthermore, the heights h2 to h7 of the third and fifth to seventh ribs of the rib structure 1a can be the same or different as required. For example, the heights h3 and h5 of the third rib 13 and the fifth rib 15 relative to the honeycomb side 10b are both 50 mm, while the height h2 of the second middle section 12c of the second rib 12 relative to the honeycomb side 10b and the height h7 of the seventh rib 17 relative to the honeycomb side 10b are both 55 mm, and the height h6 of the sixth rib 16 relative to the honeycomb side 10b is 25 mm. In addition to the first rib 11 and the second rib 12, the fourth rib 14 also has different heights according to the different positions where it is located. The height h4 of the fourth rib 14 relative to the honeycomb side 10b between the areas enclosed by the two third ribs 13 and the two fifth ribs 15 at the corners adjacent to the top plate 10 and between every two adjacent seventh ribs 17 is 50 mm as are the heights h3 and h5 of the third rib 13 and the fifth rib 15 relative to the honeycomb side 10b. However, the height h4' of the fourth rib 14 outside these multiple areas relative to the honeycomb side 10b is 32 mm.

[0070] In addition, a total of four seventh ribs 17 are arranged in a tic-tac-toe pattern in the longitudinal and transverse directions, and the honeycomb side 10b of the top plate 10 is divided into four areas. In each area, 25 sub-areas are formed between the adjacent second ribs 12, third ribs 13, fourth ribs 14, fifth ribs 15 and sixth ribs 16. Each sub-area has a recessed area S, and the area surrounded by the four seventh ribs 17 also has a recessed area S. Furthermore, the thickness t0" of the top plate 10 in the recessed area S surrounded by the four seventh ribs 17 can be greater than the thickness t0 of the top plate 10 at other locations as required. For example, the thickness t0" of the top plate 10 in the recessed area S surrounded by the four seventh ribs 17 is thickened to 6 mm to increase the strength of the thickened elevated floor 1 at the center.

[0071] In addition, if Figure 1C and Figure 1C-1 As shown, the width d1 to d7 of each rib can be the same or different according to the needs. For example, the first rib 11 in this embodiment is narrower at both ends and wider in the middle, and its width d1 is 5 to 12 mm, the width d2 of the second rib 12 is 6 mm, the width d3 of the third rib 13 and the width d5 ​​of the fifth rib 15 are both 3 mm, and the width d6 of the sixth rib 16 is 2.5 mm. The fourth rib 14 and the seventh rib 17 are more special. The width d4 of the fourth rib 14 in the aforementioned section between the area surrounded by the two third ribs 13 and the two fifth ribs 15 at each corner of the top plate 10 and between every two adjacent seventh ribs 17 is 4 mm, and the width d4' of the section outside the multiple areas is 2.5 mm. The width d7 of the section of the seventh rib 17 within the area surrounded by the four seventh ribs 17 is increased to 6 mm, which is the same as the width d2 of the second rib 12, so that the structural strength of the top plate 10 within the area surrounded by the four seventh ribs 17 is further improved, but the width d7' of the section outside the area surrounded by the four seventh ribs 17 only needs to be 4 mm.

[0072] In addition, in a preferred embodiment, the rib structure 1a may further be provided with a plurality of auxiliary ribs 18 having a height less than that of the plurality of main ribs. Figure 1C As shown, the height h8 of each auxiliary rib 18 relative to the honeycomb side 10b is, for example, 6 mm or higher, but is lower than the minimum height 25 mm of the plurality of main ribs relative to the honeycomb side 10b. The width d8 of the plurality of auxiliary ribs 18 is at least 2.5 mm. The plurality of auxiliary ribs 18 are formed in the respective recessed areas S, and except for the plurality of auxiliary ribs 18 in the area surrounded by the four seventh ribs 17, which are cross-shaped and staggered, the auxiliary ribs 18 in the remaining areas extend in a single direction without staggering each other, as shown in FIG. Figure 1C As shown, two parallel auxiliary ribs 18 are arranged in a recessed area S, thereby dividing the bottom of the recessed area S into two recessed portions R.

[0073] In addition, in each of the recessed areas S (4 recessed areas S) surrounded by each pair of parallel and adjacent fourth ribs 14 and fifth ribs 15 and each pair of parallel and adjacent fourth ribs 14 and fifth ribs 15 perpendicular thereto, and each of the recessed areas S (4 recessed areas S) surrounded by each pair of parallel and adjacent fourth ribs 14, fifth ribs 15 and two adjacent seventh ribs 17, the thickness t0' of the top plate 10 in the area other than the center is thicker. For example, if the thickness t0 of the top plate 10 in the aforementioned majority of areas is 4 mm, the thickness t0' of the top plate 10 in the 8 recessed areas S can be thickened to 8 mm. In addition, a plurality of blind holes 19a located on the honeycomb side are also provided in each of the 8 recessed areas S. In this embodiment, each recessed area S (a total of 8 recessed areas S) having blind holes 19a is provided with nine blind holes 19a, and these nine blind holes 19a are evenly distributed in three recessed portions R separated by two auxiliary ribs 18. The depth td of each blind hole 19a is, for example, 4 mm, and the thickness t0' of the top plate 10 next to each blind hole 19a is thickened to 8 mm as described above, so the thickness of the top plate 10 below the bottom of each blind hole 19a is also t0, that is, 4 mm thick. Figure 1C and Figure 1C-1 As shown, the height h4 of the fourth rib 14 in the plurality of regions is higher than the height h4' of the fourth rib 14 outside the plurality of regions, so the support of the fourth rib 14 to the plurality of regions can be improved. In addition, the thickness t0' of the top plate 10 in the plurality of regions is also thickened, so the overall structural strength affected by the blind holes 19a in the plurality of regions can be compensated.

[0074] Since a plurality of blind holes 19a are provided and the thickness of the top plate in the area where the blind holes 19a are provided and the height and strength of the ribs around the area are increased, the thickened elevated floor 1 in this embodiment can reduce the weight of the thickened elevated floor 1 and save material costs while maintaining the load-bearing capacity of the thickened elevated floor 1.

[0075] In summary, the thickened elevated floor 1 of the present embodiment is mainly improved by the heights h1-h7 of the first to seventh ribs 11-17 of the rib structure 1a relative to the honeycomb side 10b being at least 25 mm, so that the thickened elevated floor 1 can bear heavier equipment in the semiconductor process. At the same time, the design that each first rib 11, the second rib 12 and each fourth rib 14 have a higher height only in a portion of the section with a larger load and that some main ribs have a thicker thickness only in the portion with a larger load makes the overall weight lighter, thereby reducing the material cost and the burden on the floor below. Moreover, each L-shaped support seat 11a formed at the four corners of the thickened elevated floor 1 is respectively formed into a groove, so that after the thickened elevated floor 1 is erected together with other types of elevated floors with lower load bearing weight and lower height, the surface of the entire elevated floor can still be maintained on the same horizontal plane.

[0076] Furthermore, by providing a plurality of blind holes 19a in only a part of the recessed area S instead of the entire recessed area S, the structural strength coefficient thereof will not be reduced.

[0077] The above embodiments are only used to illustrate the principles and effects of the present invention, and are not used to limit the present invention. Those skilled in the art may modify the above embodiments without violating the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be as listed in the claims.

Claims

1. A thickened elevated floor, characterized in that: include: a top plate having opposing ground and honeycomb sides; as well as a rib structure provided on the honeycomb side of the top plate to form a plurality of recessed areas, the rib structure comprising a first rib, a second rib, a third rib, a fourth rib, a fifth rib, a sixth rib and a seventh rib arranged in sequence from the edges of the top plate to the center, and the first to seventh ribs are main ribs, and their height relative to the honeycomb side is at least 25 mm; Among them, the thickness of the top plate in each of the recessed areas surrounded by each pair of parallel and adjacent fourth ribs, the fifth ribs and each pair of parallel and adjacent fourth ribs, the fifth ribs perpendicular thereto, and the thickness of the top plate in each of the recessed areas surrounded by each pair of parallel and adjacent fourth ribs, the fifth ribs and two adjacent seventh ribs is greater than the thickness of the top plate in the remaining multiple recessed areas, and a plurality of blind holes are respectively provided on the side of the honeycomb.

2. The thickened elevated floor according to claim 1, characterized in that: The plurality of recessed areas are arranged in an array to form a honeycomb structure on the honeycomb side.

3. The thickened elevated floor according to claim 1, characterized in that: Each of the first ribs is formed at the edge of the top plate and surrounds the frame of the thickened elevated floor.

4. The thickened elevated floor according to claim 1, characterized in that: Each of the first ribs includes two first side end sections respectively adjacent to two ends thereof and a first middle section sandwiched between the two first side end sections, and the height of the first middle section is higher than that of the two first side end sections.

5. The thickened elevated floor according to claim 4, characterized in that: The intersection of the first middle section and the two first side end sections is respectively adjacent to the intersection of the first rib and the two third ribs where the first middle section is located.

6. The thickened elevated floor according to claim 1, characterized in that: The sum of the maximum height of the first rib relative to the honeycomb side of the top plate and the thickness of the top plate is at least 73 mm, and the thickness of the top plate is at least 4 mm.

7. The thickened elevated floor according to claim 1, characterized in that: The width of the first rib is 5 to 12 mm.

8. The thickened elevated floor according to claim 1, characterized in that: The heights of the second to seventh ribs relative to the honeycomb side of the top plate are 25 to 55 mm.

9. The thickened elevated floor according to claim 1, characterized in that: Each second rib includes two second side end sections respectively adjacent to its two ends and a second middle section sandwiched between the two second side end sections, and the height of the second middle section is higher than the height of the two second side end sections, and the intersection of the second middle section and the two second side end sections is respectively adjacent to the intersection of the second rib and the two fifth ribs where it is located.

10. The thickened elevated floor according to claim 1, characterized in that: The height of each fourth rib between the area surrounded by the two third ribs and the two fifth ribs adjacent to each corner of the top plate and between every two adjacent seventh ribs is higher than its height outside the plurality of areas.

11. The thickened elevated floor according to claim 1, characterized in that: The width of the second to seventh ribs is 3 to 6 mm.

12. The thickened elevated floor according to claim 1, characterized in that: The rib structure further includes a plurality of auxiliary ribs with a height of at least 6 mm and a width of at least 2.5 mm, and a plurality of the auxiliary ribs are arranged in the plurality of recessed areas between the adjacent second ribs, third ribs, fourth ribs, fifth ribs, sixth ribs and seventh ribs. In addition to the plurality of auxiliary ribs in the area surrounded by the four seventh ribs being cross-staggered, the plurality of auxiliary ribs in the remaining areas extend in a single direction, so that a plurality of recesses are formed between the plurality of main ribs and the plurality of auxiliary ribs.

13. The thickened elevated floor according to claim 12, characterized in that: Nine blind holes are respectively provided in the four recessed areas surrounded by each pair of parallel and adjacent fourth ribs, the fifth ribs and each pair of parallel and adjacent fourth ribs, the fifth ribs perpendicular thereto, and in the four recessed areas surrounded by each pair of parallel and adjacent fourth ribs, the fifth ribs and two adjacent seventh ribs, and the nine blind holes are arranged in the multiple recesses, the depth of each blind hole is 4 mm, and the thickness of the top plate next to each blind hole is thickened to 8 mm.

14. The thickened elevated floor according to claim 1, characterized in that: The four seventh ribs in the rib structure are arranged in a tic-tac-toe pattern to divide the thickened elevated floor area into four areas adjacent to the four corners of the top plate, and 25 sub-areas are formed between the adjacent second ribs, the third ribs, the fourth ribs, the fifth ribs and the sixth ribs in the four areas. Each of the sub-areas has a recessed area, and a wing plate is formed around the top plate. The thickness of the wing plate and the thickness of the top plate in the recessed area surrounded by the four seventh ribs are both greater than the thickness of the top plate in the 25 sub-areas.

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