CN211312593U

CN211312593U - Bottom layer modular floor slab

Info

Publication number: CN211312593U
Application number: CN201820000450.4U
Authority: CN
Inventors: 张延年; 靖新; 汪青杰
Original assignee: Shenyang Jianzhu University
Current assignee: Shenyang Jianzhu University
Priority date: 2018-01-02
Filing date: 2018-01-02
Publication date: 2020-08-21
Anticipated expiration: 2028-01-02

Abstract

The utility model relates to a bottom modularization floor slab B class board belongs to building structure engineering technical field. The bottom layer modularization floor board B class board is the rectangular plate, the outside end of the inter-board connecting plate and the inter-board joist is connected with the end-capping plate by the nail, the top of the end-capping plate is the upper transverse wall connecting plate connected with the upper transverse wall, the bottom of the end-capping plate is the lower transverse beam connecting plate connected with the lower transverse beam, the two are parallel and corresponding up and down, along the length direction of the two, the width of one fourth to one sixth of the board is exposed outside the board, the part exposed outside the board is provided with a plurality of arc-shaped ventilation openings which are uniformly distributed, the part exposed outside the board of the upper transverse wall connecting plate is the upper wall body connection nailing region, and the part exposed outside the board of the lower transverse beam connecting plate forms the lower connection top nailing region. The beneficial effects of the utility model are that installation operation is showing and is simplifying, and assembly speed is fast, can adopt the assembly of most article assembly, and industrialization degree is higher, and economic effect is good, and has avoided environmental pollution.

Description

Bottom layer modular floor slab

Technical Field

The utility model belongs to the technical field of building structure, especially, relate to a bottom modularization floor slab.

Background

Statistically, the construction industry consumes about 50% of energy, 42% of water resources, 50% of materials, and 48% of arable land on earth. Causing ecological imbalance, generating 24% air pollution, 50% greenhouse effect, 40% water pollution and 50% chlorofluorocarbon, etc., all over the world.

The green building plays a vital role in the aspects of environmental pollution treatment, energy conservation, emission reduction and industrial structure adjustment in China. In the past, China only pays attention to steel structures and concrete structures and neglects wood structure green buildings in the aspect of developing green buildings. The non-renewable and non-sustainable nature of steel, cement, plastics has become apparent. At present, developed countries have acknowledged that wood buildings and building materials processed by utilizing agricultural wastes are the correct direction for sustainable development of the building industry, but the wide application of the novel wood buildings in government departments and social circles of China still has a plurality of misdistricts.

Therefore, it is necessary to systematically research and develop the green building with wood structure and the industrialization thereof, so that the building industry in China really realizes the green, recyclable and sustainable whole process.

SUMMERY OF THE UTILITY MODEL

To the technical problem that exists, the utility model aims to provide a long service life, environmental protection, bottom modularization floor slab of circulated use need not to set up sound insulation, heat preservation in addition, reduces a large amount of field operations, guarantees simultaneously that manufacturing procedure is simple, more guarantees that it has good atress performance.

The utility model adopts the technical scheme as follows:

the utility model relates to a bottom modular floor slab, which comprises an upper transverse wall connecting plate, a lateral inter-plate connecting plate, a top surface covering plate, a beam upper inter-plate connecting plate, a lower cross beam connecting plate, a bottom surface covering plate, a rear additional beam plate connecting reinforcing plate, an in-plate joist, an up-down connecting reinforcing wale, an in-plate wale, a lower connecting top nailing region, an arc-shaped ventilation opening, a sealing plate, a lateral inter-plate connecting nailing region, a beam upper inter-plate connecting nailing region, an upper wall connecting wall outer nailing region, an upper wall connecting wall inner nailing region and a lower connecting bottom nailing region; the longitudinal two side ends of the bottom layer modular floor slab are lateral inter-slab connecting plates, in-slab joists which are uniformly distributed are arranged between the lateral inter-slab connecting plates, the width directions of the inter-slab connecting plates and the width directions of the in-slab joists are vertical and parallel, and in-slab cross braces which are vertical to the lateral inter-slab connecting plates and the in-slab joists are respectively arranged between the lateral inter-slab connecting plates and the in-slab joists as well as between the in-slab joists; in the respective edge areas of the two plates of the upper transverse wall connecting plate, the areas with the width being the plate thickness are an upper wall connecting wall external nailing area and an upper wall connecting wall internal nailing area respectively; the end parts of the inter-plate connecting plate and one end of the outer side of the in-plate joist are respectively connected with the end-sealing plate by adopting nails; the top of the end-sealing plate is provided with an upper transverse wall connecting plate connected with an upper transverse wall, the bottom of the end-sealing plate is provided with a lower cross beam connecting plate connected with a lower cross beam, the upper cross wall connecting plate and the lower cross beam connecting plate are parallel and vertically corresponding, along the length direction of the upper cross wall connecting plate and the lower cross beam connecting plate, one quarter to one sixth of the width of the plate is exposed outside the plate, and the part exposed outside the plate is respectively provided with a plurality of uniformly distributed arc-shaped; the part of the upper transverse wall connecting plate exposed outside the plate forms an upper wall connecting wall external nailing region, and the region with the same width at the inner side is an upper wall connecting wall internal nailing region; the part of the lower cross beam connecting plate exposed outside the plate forms a lower connecting top nailing area; the areas with the same width on the inner sides are the areas with the lower parts connected with the bottom nailing areas, the areas with the lower parts connected with the top nailing areas, the upper wall connecting wall outer nailing areas, the upper wall connecting wall inner nailing areas and the lower parts connected with the bottom nailing areas are equal in width and preferentially equal to the thickness of the plate; the end parts of the inter-plate connecting plate and one end of the inner side of the in-plate joist are respectively connected with the inter-plate connecting plate of the beam by adopting nails; an upper connecting and reinforcing cross brace parallel to the connecting plate between the upper plates of the beams is arranged between the lateral inter-plate connecting plate close to the connecting plate between the upper plates of the beams and the inter-plate joist, and the upper connecting and reinforcing cross brace and the lower connecting and reinforcing cross brace are in a straight line; the top surfaces of the upper transverse wall connecting plate, the lateral inter-plate connecting plate, the in-plate joist, the upper and lower connecting reinforcing transverse struts and the in-plate transverse strut are flush and are connected with the top surface covering panel; the bottom surfaces of the in-board joists, the end sealing plates, the upper and lower connecting and reinforcing cross braces and the in-board cross braces are flush and are connected with the bottom surface covering panel; the bottom surfaces of the lateral inter-plate connecting plate, the beam upper inter-plate connecting plate and the lower cross beam connecting plate are flush, the heights of the exposed bottom surface covering plates are equal, and the bottom surfaces are the plate thicknesses of the beam upper inter-plate connecting plates; the exposed part of the lateral inter-plate connecting plate forms a lateral inter-plate connecting and nailing region, and the exposed part of the beam upper inter-plate connecting plate forms a beam upper inter-plate connecting and nailing region; the width of all the nail applying areas is preferably equal to the plate thickness; and a space enclosed by the lateral inter-plate connecting plate, the top surface covering panel, the beam upper inter-plate connecting plate, the bottom surface covering panel and the end sealing plate is filled with a heat-insulating sound-insulating material.

Furthermore, the bottom layer modular floor slab comprises an upper cross wall connecting plate, a lateral inter-plate connecting plate, a beam upper inter-plate connecting plate, a lower cross beam connecting plate, a rear additional beam plate connecting reinforcing plate, an in-plate joist, an up-down connecting reinforcing cross brace, an in-plate cross brace and a sealing end plate which are all the same in thickness, and the widths of all the plates are integral multiples of the thickness.

Furthermore, the bottom layer modular floor slab, the upper cross wall connecting plate and the lower cross beam connecting plate are provided with semicircular arc-shaped ventilation openings at the side ends of the plates, the edges of the openings are in reverse arc smooth transition, and the radius of the radian is 8-12 mm; the spacing of the arc-shaped ventilation openings is 400mm-600 mm.

Further, the installation method of the bottom layer modular floor slab comprises the following steps:

A. the ground beam plates are connected with the foundation through ground anchor bolts, the ground beam plates on the periphery are flush with the outer surface of the foundation, the inner surface of the ground beam plates extends out of the foundation, and the extending part is a ground beam plate nailing area; the inner ground beam plates extend out of the foundation, the extending parts are ground beam plate nail applying areas, and the extending width of the ground beam plate nail applying areas is equal to the width of each nail applying area of the bottom layer modular floor slab;

B. the bottom modular floor slab A, the bottom modular floor slab C and the bottom modular floor slab D are respectively arranged on the beam slab, and the bottom modular floor slab is arranged in the middle of the side span; the lower part of the outer side is connected with a top nailing region, and a top penetrating nail is connected with a ground beam plate on site; nailing in a nail application area of the inner floor beam plate, and connecting the nail with the floor beam plate and a lower beam connecting plate of the bottom modular floor slab by adopting a bottom penetrating nail on site;

C. placing the connecting plates between the upper beam plates on the internal ground beam plates, connecting nail applying areas between the upper beam plates for applying nails, and butting the upper beam plates with longitudinally adjacent plates on the ground beam plates; arranging a rear additional beam plate connecting reinforcing plate between the ground beam plate and the bottom modular floor slab, applying nails in a nail applying area of the ground beam plate, and connecting the ground beam plate, the rear additional beam plate connecting reinforcing plate and a lower cross beam connecting plate of the bottom modular floor slab by adopting a bottom penetrating nail on site;

D. the beam upper plates of the lateral inter-plate connecting plates are connected with the nailing areas for nailing and are connected with the transversely adjacent plates.

The utility model has the advantages and beneficial effect:

the utility model discloses the installation operation is showing and is simplifying, and assembly speed is fast, can adopt the assembly of most article assembly, and industrialization degree is higher, and economic effect is good, and has avoided environmental pollution. Particularly, the sound insulation and heat preservation layers are embedded into the plates, so that a large amount of field operation is reduced, only the whole plate modularization nailing operation is needed on the field, and the construction period is shortened by times. Through a series of structures, the bearing has good stress performance.

Drawings

FIG. 1 is a schematic view of the connection between the foundation and the floor beam.

FIG. 2 is a schematic view of the connection between a bottom layer modular floor and a floor beam.

Figure 3 is a schematic top view of a floor modular floor covering.

Figure 4 is a bottom schematic view of a floor modular floor covering.

Figure 5 is a schematic side view of a floor modular floor covering.

Fig. 6 is a schematic structural diagram of an uncovered top covering panel (without adding thermal insulation and sound insulation materials) of a bottom modular floor slab.

Fig. 7 is a schematic sectional view taken along line a-a of fig. 3.

In the figure: 1 as a basis; 2 is a floor beam plate; 3, a bottom layer modular floor system; 4 is a ground anchor bolt; 5, field nails are used;

3-1 is a bottom layer modular floor plate A; 3-2 is a bottom layer modular floor plate; 3-3 is a bottom layer modular floor plate C; 3-4 is a bottom layer modular floor plate D plate;

3-1-2 is an upper transverse wall connecting plate; 3-1-3 is a lateral inter-plate connecting plate; 3-1-4 is a top surface covering plate; 3-1-5 are beam upper plate connection plates; 3-1-7 is a lower cross beam connecting plate; 3-1-8 is a bottom surface covering panel; 3-1-9 is a rear additional beam plate connecting reinforcing plate; 3-1-11 is an in-plate joist; 3-1-12 are upper and lower connecting reinforced wales; 3-1-14 is an inner plate cross brace; 3-1-15 is a top nailing region connected with the lower part; 3-1-16 are arc-shaped ventilation openings; 3-1-17 is a seal end plate; 3-1-18 is a connecting and nailing area between the lateral plates; 3-1-19 are connecting nail applying areas between the upper plates of the beams; 3-1-20 is an upper wall connecting wall external nailing region; 3-1-21 is an upper wall connecting wall inner nailing area; 3-1-22 is a lower part connecting bottom nailing region; 5-1 is a field top penetrating nail, and 5-2 is a field bottom penetrating nail.

Detailed Description

The bottom layer modular floor slab provided by the invention is described in detail with reference to the accompanying drawings and embodiments.

Examples

As shown in figures 1-7, a bottom modular floor slab comprises an upper transverse wall connecting plate 3-1-2, a lateral inter-plate connecting plate 3-1-3, a top surface covering plate 3-1-4, an upper beam inter-plate connecting plate 3-1-5, a lower cross beam connecting plate 3-1-7, a bottom surface covering plate 3-1-8, a rear additional beam plate connecting reinforcing plate 3-1-9, an in-slab joist 3-1-11, an upper and lower connecting reinforcing transverse strut 3-1-12, an in-slab transverse strut 3-1-14, a lower connecting top nailing region 3-1-15, an arc-shaped ventilation opening 3-1-16, an end sealing plate 3-1-17, a lateral inter-plate connecting nailing region 3-1-18, an upper beam inter-plate connecting nailing region 3-1-19, a lower connecting top nailing region 3-1-9, a lower connecting top nailing region 3-, An upper wall connecting wall external nailing region 3-1-20, an upper wall connecting wall internal nailing region 3-1-21 and a lower part connecting bottom nailing region 3-1-22; the longitudinal two side ends are lateral inter-plate connecting plates 3-1-3, in-plate joists 3-1-11 which are uniformly distributed are arranged between the lateral inter-plate connecting plates 3-1-3, the plate width directions of the inter-plate connecting plates 3-1-3 and the in-plate joists 3-1-11 are vertical and parallel, and in-plate cross braces 3-1-14 which are perpendicular to the lateral inter-plate connecting plates 3-1-3, the in-plate joists 3-1-11 and the in-plate joists 3-1-11 are respectively arranged between the lateral inter-plate connecting plates 3-1-3 and the in-plate joists 3-1-11; the areas with the width being the plate thickness of the edge areas of the two plates of the upper transverse wall connecting plate 3-1-2 are an upper wall connecting wall external nailing area 3-1-20 and an upper wall connecting wall internal nailing area 3-1-21 respectively; the end parts of one ends of the outer sides of the inter-plate connecting plate 3-1-3 and the in-plate joists 3-1-11 are respectively connected with the end sealing plates 3-1-17 by adopting nails; the top of the end-sealing plate 3-1-17 is provided with an upper transverse wall connecting plate 3-1-2 connected with an upper transverse wall, the bottom of the end-sealing plate is provided with a lower cross beam connecting plate 3-1-7 connected with a lower cross beam, the upper and lower cross beam connecting plates are parallel and vertically corresponding, along the length directions of the upper and lower cross beam connecting plates, the width of one fourth to one sixth of the plate is exposed outside the plate, and the part exposed outside the plate is respectively provided with a plurality of arc-shaped ventilation openings 3-1-16 which are uniformly distributed; the part of the upper transverse wall connecting plate 3-1-2 exposed outside the plate forms an upper wall connecting wall external nailing region 3-1-20, and the region with the same width at the inner side is an upper wall connecting wall internal nailing region 3-1-21; the part of the lower cross beam connecting plate 3-1-7 exposed outside the plate forms a lower connecting top nailing region 3-1-15; the area with the same width at the inner side is the area with the lower part connected with the bottom nailing area 3-1-22, the lower part connected with the top nailing area 3-1-15, the upper wall connected with the outer nailing area 3-1-20, the upper wall connected with the inner nailing area 3-1-21 and the lower part connected with the bottom nailing area 3-1-22 are all equal in width and are preferably equal to the thickness of the plate; the end parts of one ends of the inner sides of the inter-plate connecting plates 3-1-3 and the in-plate joists 3-1-11 are respectively connected with the inter-plate connecting plates 3-1-5 on the beams by adopting nails; an upper and lower connecting reinforced cross brace 3-1-12 parallel to the beam upper inter-plate connecting plate 3-1-5 is arranged between the lateral inter-plate connecting plate 3-1-3 close to the beam upper inter-plate connecting plate 3-1-5 and the in-plate joist 3-1-11, and the upper and lower connecting reinforced cross braces 3-1-12 are in a straight line; the top surfaces of an upper transverse wall connecting plate 3-1-2, a lateral inter-plate connecting plate 3-1-3, an in-plate joist 3-1-11, an upper and lower connecting reinforcing transverse strut 3-1-12 and an in-plate transverse strut 3-1-14 are flush and are connected with a top surface covering plate 3-1-4; 3-1-11 parts of in-board joists, 3-1-17 parts of end-sealing boards, 3-1-12 parts of upper and lower connecting and reinforcing cross braces and 3-1-14 parts of in-board cross braces are flush with the bottom surfaces and are connected with 3-1-8 parts of bottom surface covering boards; the bottom surfaces of the lateral inter-plate connecting plate 3-1-3, the beam upper inter-plate connecting plate 3-1-5 and the lower cross beam connecting plate 3-1-7 are flush, the heights of the exposed bottom surface covering plates 3-1-8 are equal, and the bottom surfaces are the plate thicknesses of the beam upper inter-plate connecting plates 3-1-5; exposed parts of the lateral inter-plate connecting plates 3-1-3 form lateral inter-plate connecting and nailing areas 3-1-18, and exposed parts of the beam upper inter-plate connecting plates 3-1-5 form beam upper inter-plate connecting and nailing areas 3-1-19; the width of all the nail applying areas is preferably equal to the plate thickness; filling heat-insulating and sound-insulating materials in a space surrounded by the lateral inter-plate connecting plate 3-1-3, the top surface covering plate 3-1-4, the beam upper inter-plate connecting plate 3-1-5, the bottom surface covering plate 3-1-8 and the end-sealing plate 3-1-17;

the upper transverse wall connecting plate 3-1-2, the lateral inter-plate connecting plate 3-1-3, the beam upper inter-plate connecting plate 3-1-5, the lower cross beam connecting plate 3-1-7, the rear additional beam plate connecting reinforcing plate 3-1-9, the in-plate joists 3-1-11, the upper and lower connecting reinforcing crossbars 3-1-12, the in-plate crossbars 3-1-14 and the end sealing plates 3-1-17 are all the same in thickness, and the widths of all the plates are integral multiples of the thickness.

The arc-shaped ventilation openings 3-1-16 arranged at the side ends of the upper transverse wall connecting plate 3-1-2 and the lower transverse beam connecting plate 3-1-7 are semicircular, the edges of the openings are in reverse arc smooth transition, and the radian radius is 8mm-12 mm; the distance between the arc-shaped ventilation openings 3-1-16 is 400mm-600 mm.

The installation method of the bottom layer modular floor slab comprises the following steps:

A. the ground beam plates 2 are connected with the foundation 1 through ground anchor bolts 4, the ground beam plates 2 on the periphery are flush with the outer surface of the foundation 1, the inner surface of each ground beam plate extends out of the foundation 1, and the extending part is a nail applying area of the ground beam plates; the inner floor beam plates 2 extend out of the foundation 1, the extending parts are floor beam plate nailing areas, and the extending width of the floor beam plate nailing areas is equal to the width of each nailing area of the bottom layer modular floor slab;

B. a bottom layer modular floor plate A3-1, a bottom layer modular floor plate 3-2, a bottom layer modular floor plate C3-3 and a bottom layer modular floor plate D3-4 are respectively arranged on the beam slab 2, and the bottom layer modular floor plate 3-2 is arranged in the middle of the side span; the lower part of the outer side is connected with a top nailing region 3-1-15 nailing regions, and a field top penetrating nail 5-1 is adopted to be connected with the ground beam plate 2; nailing is carried out in a nail application area of the ground beam plate at the inner side, and the ground beam plate 2 and a lower cross beam connecting plate 3-1-7 of a bottom layer modular floor slab 3-2 are connected by adopting a field bottom penetrating nail 5-2;

C. placing connecting plates 3-1-5 between upper beam plates on an internal ground beam plate 2, connecting nail applying areas 3-1-19 between the upper beam plates, and butting the upper beam plates with longitudinally adjacent plates on the ground beam plate 2; rear additional beam plate connecting reinforcing plates 3-1-9 are arranged between the ground beam plate 2 and the bottom modular floor cover plate 3-2, nails are applied to a nail applying area of the ground beam plate, and bottom penetrating nails 5-2 are adopted on site to connect the ground beam plate 2, the rear additional beam plate connecting reinforcing plates 3-1-9 and the lower beam connecting plates 3-1-7 of the bottom modular floor cover plate 3-2;

D. the beam upper plate connecting areas 3-1-19 of the lateral inter-plate connecting plates 3-1-3 are connected with the nail applying areas 3-1-19 and are connected with the transversely adjacent plates.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A bottom modular floor slab comprises an upper transverse wall connecting plate (3-1-2), lateral inter-plate connecting plates (3-1-3), a top surface covering plate (3-1-4), beam upper inter-plate connecting plates (3-1-5), lower cross beam connecting plates (3-1-7), a bottom surface covering plate (3-1-8), a rear additional beam plate connecting reinforcing plate (3-1-9), an in-slab joist (3-1-11), an upper and lower connecting reinforcing cross brace (3-1-12), an in-slab cross brace (3-1-14), a lower connecting top nailing region (3-1-15), an arc-shaped ventilation opening (3-1-16), a sealing end plate (3-1-17), lateral inter-plate connecting nailing regions (3-1-18), A nailing region (3-1-19), an upper wall connecting wall outer nailing region (3-1-20), an upper wall connecting wall inner nailing region (3-1-21) and a lower part connecting bottom nailing region (3-1-22) are connected between the beam upper plates; the method is characterized in that: the floor comprises a bottom layer modular floor slab, wherein the longitudinal two side ends of the bottom layer modular floor slab are lateral inter-slab connecting plates (3-1-3), in-slab joists (3-1-11) which are uniformly distributed are arranged between the lateral inter-slab connecting plates (3-1-3), the width directions of the inter-slab connecting plates (3-1-3) and the in-slab joists (3-1-11) are vertical and parallel, and in-slab cross braces (3-1-14) which are perpendicular to the lateral inter-slab connecting plates (3-1-3) and the in-slab joists (3-1-11) are respectively arranged between the lateral inter-slab connecting plates (3-1-11); the areas with the width being the plate thickness of the edge areas of the two plates of the upper transverse wall connecting plate (3-1-2) are an upper wall connecting wall outer nailing area (3-1-20) and an upper wall connecting wall inner nailing area (3-1-21); the end parts of one ends of the outer sides of the inter-plate connecting plate (3-1-3) and the in-plate joist (3-1-11) are respectively connected with the end sealing plate (3-1-17) by adopting nails; the top of the end sealing plate (3-1-17) is provided with an upper transverse wall connecting plate (3-1-2) connected with an upper transverse wall, the bottom of the end sealing plate is provided with a lower cross beam connecting plate (3-1-7) connected with a lower cross beam, the upper and lower cross beam connecting plates are parallel and vertically corresponding to each other, along the length direction of the upper and lower cross beam connecting plates, the width of one fourth to one sixth of the plate is exposed outside the plate, and the part exposed outside the plate is respectively provided with a plurality of uniformly distributed arc-shaped ventilation openings (3-1-16); the part of the upper transverse wall connecting plate (3-1-2) exposed outside the plate forms an upper wall connecting wall external nailing region (3-1-20), and the region with the same width at the inner side is an upper wall connecting wall internal nailing region (3-1-21); the part of the lower cross beam connecting plate (3-1-7) exposed outside the plate forms a lower connecting top nailing area (3-1-15); the area with the same width at the inner side is the area with the lower part connected with the bottom nailing area (3-1-22), the area with the lower part connected with the top nailing area (3-1-15), the area with the upper wall connected with the outer nailing area (3-1-20), the area with the upper wall connected with the inner nailing area (3-1-21) and the area with the lower part connected with the bottom nailing area (3-1-22) have equal width, and are preferably equal to the thickness of the plate; the end parts of one ends of the inner sides of the inter-plate connecting plate (3-1-3) and the in-plate joist (3-1-11) are respectively connected with the inter-plate connecting plate (3-1-5) of the beam by adopting nails; an upper and lower connecting reinforcing cross brace (3-1-12) parallel to the beam upper inter-plate connecting plate (3-1-5) is arranged between the lateral inter-plate connecting plate (3-1-3) close to the beam upper inter-plate connecting plate (3-1-5) and the intra-plate joist (3-1-11), and the upper and lower connecting reinforcing cross braces (3-1-12) are in a straight line; the top surfaces of an upper transverse wall connecting plate (3-1-2), a lateral inter-plate connecting plate (3-1-3), an in-plate joist (3-1-11), an upper and lower connecting reinforced transverse strut (3-1-12) and an in-plate transverse strut (3-1-14) are flush and are connected with a top surface covering plate (3-1-4); the bottom surfaces of the in-board joists (3-1-11), the end sealing plates (3-1-17), the upper and lower connecting and reinforcing cross braces (3-1-12) and the in-board cross braces (3-1-14) are flush and are connected with the bottom surface covering plates (3-1-8); the bottom surfaces of the lateral inter-plate connecting plate (3-1-3), the beam upper inter-plate connecting plate (3-1-5) and the lower cross beam connecting plate (3-1-7) are flush, the heights of the cladding plates (3-1-8) exposed out of the bottom surfaces are equal, and the bottom surfaces are the plate thicknesses of the beam upper inter-plate connecting plates (3-1-5); exposed parts of the lateral inter-plate connecting plates (3-1-3) form lateral inter-plate connecting and nailing areas (3-1-18), and exposed parts of the beam upper inter-plate connecting plates (3-1-5) form beam upper inter-plate connecting and nailing areas (3-1-19); the width of all the nail applying areas is preferably equal to the plate thickness; and a space surrounded by the lateral inter-plate connecting plate (3-1-3), the top surface covering plate (3-1-4), the beam upper inter-plate connecting plate (3-1-5), the bottom surface covering plate (3-1-8) and the end sealing plate (3-1-17) is filled with a heat-insulating and sound-insulating material.

2. The floor modular floor covering of claim 1, wherein: the thickness of the upper transverse wall connecting plate (3-1-2), the lateral inter-plate connecting plate (3-1-3), the beam upper inter-plate connecting plate (3-1-5), the lower cross beam connecting plate (3-1-7), the rear additional beam plate connecting reinforcing plate (3-1-9), the in-plate joist (3-1-11), the upper and lower connecting reinforcing transverse supports (3-1-12), the in-plate transverse supports (3-1-14) and the end sealing plate (3-1-17) are the same, and the width of all the plates is integral multiple of the thickness.

3. The floor modular floor covering of claim 1, wherein: the arc-shaped ventilation openings (3-1-16) formed at the side ends of the upper transverse wall connecting plate (3-1-2) and the lower transverse beam connecting plate (3-1-7) are semicircular, the edges of the openings are in reverse arc smooth transition, and the radius of the radian is 8mm-12 mm; the distance between the arc-shaped ventilation openings (3-1-16) is 400mm-600 mm.