阅读说明：本技术 一种便于雨水利用的密肋楼盖结构及其施工方法 (Dense-rib floor structure convenient for rainwater utilization and construction method thereof ) 是由 闫丽颖 张立山 邢妍 于 2021-11-01 设计创作，主要内容包括：一种便于雨水利用的密肋楼盖结构及其施工方法,包括密肋楼盖主体、蓄水结构、苗圃培养结构和雨水回收装置；密肋楼盖主体顶部设有围挡；密肋楼盖主体底部设有横向肋梁和纵向肋梁；蓄水结构设在围挡内侧下部,包括底部防水层、侧部防水层和蓄水池；蓄水池侧壁上部开设有第一溢水孔,蓄水池内部、设有过滤网；围挡和侧部防水层上、对应第一溢水孔处均设有第二溢水孔；苗圃培养结构包括培养板、种植苗圃和防水圈板；防水圈板内设有横隔板和纵隔板；横隔板和纵隔板将防水圈板的内部空间分隔成一组矩形单元格；雨水回收装置包括导流管、集水管和出水管。本发明解决了传统的密肋楼盖没有对雨水进行收集利用功能且不能减缓城市的热岛效应的技术问题。(A multi-ribbed floor structure convenient for rainwater utilization and a construction method thereof comprise a multi-ribbed floor main body, a water storage structure, a nursery culture structure and a rainwater recovery device; the top of the dense rib floor main body is provided with a fence; the bottom of the dense rib floor main body is provided with a transverse rib beam and a longitudinal rib beam; the water storage structure is arranged at the lower part of the inner side of the enclosure and comprises a bottom waterproof layer, a side waterproof layer and a reservoir; a first overflow hole is formed in the upper part of the side wall of the reservoir, and a filter screen is arranged in the reservoir; second overflow holes are formed in the retaining wall and the side waterproof layer and correspond to the first overflow holes; the nursery culture structure comprises a culture plate, a planting nursery and a waterproof ring plate; a transverse partition plate and a longitudinal partition plate are arranged in the waterproof ring plate; the transverse partition plate and the longitudinal partition plate divide the inner space of the waterproof ring plate into a group of rectangular cells; the rainwater recovery device comprises a flow guide pipe, a water collecting pipe and a water outlet pipe. The invention solves the technical problems that the traditional dense-rib floor system does not have the function of collecting and utilizing rainwater and cannot slow down the urban heat island effect.)

1. A multi-ribbed floor structure convenient for rainwater utilization comprises a multi-ribbed floor main body (18); the method is characterized in that: the device also comprises a water storage structure, a nursery culture structure and a rainwater recovery device; the top of the dense-rib floor main body (18) is provided with a fence (1) along the whole length of the peripheral edge of the dense-rib floor main body (18); the bottom of the multi-ribbed floor main body (18) is provided with transverse rib beams (2) and longitudinal rib beams (22) at intervals; the water storage structure is arranged at the lower part of the inner side of the enclosure (1) and comprises a bottom waterproof layer (19), a side waterproof layer (17) and a reservoir (15); the bottom waterproof layer (19) is arranged at the top of the dense rib floor main body (18) on the inner side of the enclosure (1); the side waterproof layers (17) are coated on the inner side surfaces of the enclosing barriers (1) along the periphery of the top of the bottom waterproof layer (19); the water reservoir (15) is arranged at the top of the bottom waterproof layer (19), and the top of the water reservoir (15) is flush with the top of the side waterproof layer (17); a plurality of first overflow holes (16) are formed in the upper portion of the side wall of the water storage tank (15), and a filter screen (14) is laid in the water storage tank (15) and above the first overflow holes (16); second overflow holes (24) are formed in the positions, corresponding to the first overflow holes (16), on the enclosure (1) and the side waterproof layer (17);

the nursery culture structure comprises a culture plate (12), a planting nursery (5) and a waterproof ring plate (3); the culture plate (12) is arranged in the water storage tank (15) and is positioned above the filter screen (14); the plate surface of the culture plate (12) is provided with drain holes (13) at intervals; the planting nursery (5) is laid on the top surface of the culture plate (12); the waterproof ring plate (3) is arranged at the top of the water storage tank (15) along the inner side surface of the enclosure (1), and the top of the waterproof ring plate (3) is flush with the top of the enclosure (1); waterproof sealant is arranged at the joint between the waterproof ring plate (3) and the outer side wall of the reservoir (15); a transverse clapboard (4) and a longitudinal clapboard (20) are arranged in the waterproof ring plate (3); the transverse partition plate (4) and the longitudinal partition plate (20) divide the inner space of the waterproof ring plate (3) into a group of rectangular unit cells (21);

the rainwater recovery device comprises a flow guide pipe (6), a water collecting pipe (8) and a water outlet pipe (11); the flow guide pipes (6) are provided with a group, and the upper end of each flow guide pipe (6) is correspondingly connected with the drain hole (13); an active carbon filter (7) is arranged on the draft tube (6); the water collecting pipe (8) is connected to the lower ends of the group of flow guide pipes (6) and is communicated with the group of flow guide pipes (6); the water outlet pipe (11) is connected to the middle of the bottom of the water collecting pipe (8), and a water purifying and filtering device (9) and a control valve (10) are sequentially arranged on the water outlet pipe (11) from top to bottom.

2. The multi-ribbed floor structure facilitating rainwater utilization according to claim 1, wherein: the multi-ribbed floor main body (18) comprises a multi-ribbed floor (18.1), a base layer (18.2), a heat-insulating layer (18.3), a floor waterproof layer (18.4) and a leveling layer (18.5) which are sequentially arranged from bottom to top; the space between adjacent transverse rib beams (2) at the bottom of the multi-ribbed floor system main body (18) is not more than 1.5m, and the space between adjacent longitudinal rib beams (22) at the bottom of the multi-ribbed floor system main body (18) is not more than 1.5 m.

3. The multi-ribbed floor structure facilitating rainwater utilization according to claim 1, wherein: the water reservoir (15) is formed by splicing a group of water reservoir units (15.1); the filter screen (14) and the culture plate (12) are arranged in each reservoir unit (15.1); the planting nursery garden (5) is correspondingly arranged on each culture plate (12).

4. The multi-ribbed floor structure facilitating rainwater utilization according to claim 3, wherein: the section of the longitudinal partition plate (20) is trapezoidal, and the longitudinal partition plate (20) is positioned above the longitudinal seam of the transversely adjacent reservoir units (15.1); the section of the diaphragm plate (4) is trapezoidal, and the diaphragm plate (4) is positioned above the transverse seam of the longitudinally adjacent water storage tank units (15.1).

5. The multi-ribbed floor structure facilitating rainwater utilization according to claim 1, wherein: the height of the enclosure (1) is not less than 1.2 m; the height of the side waterproof layer (17) is not less than 0.6 m.

6. The multi-ribbed floor structure facilitating rainwater utilization according to claim 1, wherein: the side waterproof layer (17) and the bottom waterproof layer (19) are both made of synthetic polymer materials or asphalt waterproof materials or polymer modified asphalt materials or waterproof mortar materials.

7. The multi-ribbed floor structure facilitating rainwater utilization according to claim 1, wherein: supporting plates (23) are arranged on the inner side wall of the water storage tank (15) at intervals along the circumferential direction at the connecting position corresponding to the filter screen (14); the supporting plate (23) is L-shaped, and the vertical edge of the supporting plate (23) is connected with the side wall of the water storage tank (15); the filter screen (14) is erected on the horizontal edge of the support plate (23).

8. A construction method of a multi-ribbed floor structure convenient for rainwater utilization according to any one of claims 1 to 7, comprising the steps of:

firstly, constructing a multi-ribbed floor main body (18), a transverse rib beam (2) and a longitudinal rib beam (22), wherein the transverse rib beam (2) and the longitudinal rib beam (22) are integrally formed with the multi-ribbed floor main body (18);

step two, performing vertical mold pouring and maintenance of the enclosure (1), and arranging a sealing waterproof bonding layer at the joint position of the enclosure (1) and the dense rib floor main body (18) to enable the pouring structure to be combined into a whole;

thirdly, a bottom waterproof layer (19) and a side waterproof layer (17) are respectively arranged on the top of the dense-rib floor body (18) and the inner side surface of the enclosure (1);

step four, constructing a reservoir (15): arranging a reservoir (15) at the top of the bottom waterproof layer (19), and enabling the peripheral side walls of the reservoir (15) to be in surface contact with the side waterproof layers (17);

fifthly, a filter screen (14) is arranged in the water storage tank (15);

sixthly, sequentially installing a culture plate (12), a planting nursery (5) and a waterproof ring plate (3);

and step seven, installing a rainwater recovery device until the construction is finished.

9. The construction method of a multi-ribbed floor structure convenient for rainwater utilization according to claim 8, wherein after the enclosure (1) is poured, a second overflow hole (24) is drilled on the surface of the enclosure (1), a first overflow hole (16) is drilled on the surface of the reservoir (15), and dust generated by drilling is cleaned.

10. The construction method of a multi-ribbed floor structure convenient for rainwater utilization according to claim 8, characterized in that: the concrete steps of installing the rainwater recovery device in the seventh step are as follows:

step 1, one end of a draft tube (6) penetrates through a second overflow hole (24) on the surface of a surrounding barrier (1) and is communicated with a first overflow hole (16) on the surface of a water storage tank (15), and polyurethane foam caulking agents are used for sealing the draft tube (6) and the first overflow hole (16);

step 2, mounting the activated carbon filter (7) on the flow guide pipes (6), and connecting the water collecting pipes (8) with the lower ends of the plurality of flow guide pipes (6);

and step 3, installing a water outlet pipe (11), and installing a water purifying and filtering device (9) and a control valve (10) on the water outlet pipe (11).

Technical Field

The invention belongs to the technical field of dense building engineering, and particularly relates to a dense rib floor structure convenient for rainwater utilization and a construction method thereof.

Background

In general, a one-way or two-way ribbed floor with the rib distance less than or equal to 1.5m is called a multi-ribbed floor, and the two-way multi-ribbed floor bears load together in two directions and has better stress performance. The dense rib floor is a flat roof structure consisting of reinforced concrete sheets and rib beams with small intervals. The dense rib floor is generally used for the conditions of large span and limited beam height, and when the size of the column net of the building is square or close to square, a bidirectional dense rib floor form is often adopted. The existing multi-ribbed floor is only used for bearing and protecting a house, and in an area with dense rainwater, no multi-ribbed floor for collecting and utilizing rainwater is provided, so that a multi-ribbed floor with rainwater utilization is provided, namely, a water storage and soil covering planting structure is added on the basis of the multi-ribbed floor. The water storage and soil covering planting roof has excellent heat insulation and rainproof performance, can purify the air environment, can fully accumulate and utilize rainwater, prevents the loss of the rainwater, and realizes the annual irrigation-free maintenance. The urban heat island effect is slowed down while the rainwater runoff is reduced, and the urban environment is guaranteed.

Disclosure of Invention

The invention aims to provide a multi-ribbed floor structure convenient for rainwater utilization and a construction method thereof, and aims to solve the technical problems that the traditional multi-ribbed floor structure does not have a rainwater collection and utilization function and cannot slow down the urban heat island effect.

In order to achieve the purpose, the invention adopts the following technical scheme.

A multi-ribbed floor structure convenient for rainwater utilization comprises a multi-ribbed floor main body; the device also comprises a water storage structure, a nursery culture structure and a rainwater recovery device; the top of the multi-ribbed floor body is provided with a fence along the whole length of the peripheral edge of the multi-ribbed floor body; the bottom of the multi-ribbed floor main body is provided with transverse rib beams and longitudinal rib beams at intervals; the water storage structure is arranged at the lower part of the inner side of the enclosure and comprises a bottom waterproof layer, a side waterproof layer and a reservoir; the bottom waterproof layer is arranged at the top of the multi-ribbed floor body on the inner side of the enclosure; the side waterproof layer is coated on the inner side surface of the enclosure along the periphery of the top of the bottom waterproof layer; the water reservoir is arranged at the top of the bottom waterproof layer, and the top of the water reservoir is flush with the top of the side waterproof layer; a plurality of first overflow holes are formed in the upper part of the side wall of the reservoir, and a filter screen is laid in the reservoir and above the first overflow holes; second overflow holes are formed in the positions, corresponding to the first overflow holes, on the retaining wall and the side waterproof layer;

the nursery culture structure comprises a culture plate, a planting nursery and a waterproof ring plate; the culture plate is arranged in the water storage tank and is positioned above the filter screen; the plate surface of the culture plate is provided with drain holes at intervals; the planting nursery is laid on the top surface of the culture plate; the waterproof ring plate is arranged at the top of the water storage tank along the inner side surface of the enclosure, and the top of the waterproof ring plate is flush with the top of the enclosure; waterproof sealant is arranged at the joint between the waterproof ring plate and the outer side wall of the reservoir; a transverse clapboard and a longitudinal clapboard are arranged in the waterproof ring plate; the transverse partition plate and the longitudinal partition plate divide the inner space of the waterproof ring plate into a group of rectangular unit grids;

the rainwater recovery device comprises a flow guide pipe, a water collecting pipe and a water outlet pipe; the upper end of each flow guide pipe is correspondingly connected with the drain hole; an active carbon filter is arranged on the draft tube; the water collecting pipe is connected to the lower ends of the group of flow guide pipes and is communicated with the group of flow guide pipes; the water outlet pipe is connected to the middle of the bottom of the water collecting pipe, and a water purifying and filtering device and a control valve are sequentially arranged on the water outlet pipe from top to bottom.

Preferably, the multi-ribbed floor main body comprises a multi-ribbed floor, a base layer, a heat-insulating layer, a floor waterproof layer and a leveling layer which are sequentially arranged from bottom to top; the space between adjacent transverse rib beams at the bottom of the dense-rib floor main body is not more than 1.5m, and the space between adjacent longitudinal rib beams at the bottom of the dense-rib floor main body is not more than 1.5 m.

Preferably, the water reservoir is formed by splicing a group of water reservoir units; the filter screen and the culture plate are arranged in each reservoir unit; the planting nursery is correspondingly arranged on each culture plate.

Preferably, the section of each longitudinal partition plate is trapezoidal, and each longitudinal partition plate is positioned above the longitudinal seam of the transversely adjacent reservoir unit; the cross section of the diaphragm plate is trapezoidal, and the diaphragm plate is positioned above the transverse seam of the vertically adjacent reservoir units.

Preferably, the height of the enclosure is not less than 1.2 m; the height of the side waterproof layer is not less than 0.6 m.

Preferably, the side waterproof layer and the bottom waterproof layer are both made of synthetic polymer material or asphalt waterproof material or polymer modified asphalt material or waterproof mortar material.

Preferably, support plates are arranged on the inner side wall of the water storage tank and at intervals along the circumferential direction at the positions corresponding to the connection positions of the filter screens; the supporting plate is L-shaped, and the vertical edge of the supporting plate is connected with the side wall of the reservoir; the filter screen is arranged on the horizontal edge of the supporting plate in a lapping mode.

The construction method of the multi-ribbed floor structure convenient for rainwater utilization comprises the following steps.

Step one, constructing a multi-ribbed floor main body, a transverse rib beam and a longitudinal rib beam, wherein the transverse rib beam and the longitudinal rib beam are integrally formed with the multi-ribbed floor main body.

And step two, pouring the vertical mold of the enclosure and maintaining the enclosure, and then arranging a sealing waterproof bonding layer at the joint position of the enclosure and the dense rib floor main body to enable the pouring structure to be combined into a whole.

And thirdly, respectively arranging a bottom waterproof layer and a side waterproof layer on the top of the dense rib floor body and the inner side surface of the enclosure.

Step four, constructing a reservoir: the reservoir is arranged at the top of the bottom waterproof layer, and the peripheral side walls of the reservoir are in contact with the side waterproof layer.

And fifthly, installing a filter screen in the reservoir.

And step six, sequentially installing a culture plate, a planting nursery garden and a waterproof ring plate.

And step seven, installing a rainwater recovery device until the construction is finished.

Preferably, after the enclosure is poured, a second overflow hole is drilled in the surface of the enclosure, a required first overflow hole is drilled in the surface of the reservoir, and dust generated by drilling is cleaned.

Preferably, the concrete step of installing the rainwater recovery device in the seventh step is as follows.

And step 1, penetrating one end of the flow guide pipe through a second overflow hole on the surface of the enclosure and communicating the flow guide pipe with a first overflow hole on the surface of the water storage tank, and sealing the flow guide pipe and the first overflow hole by using a polyurethane foam gap filler.

And 2, mounting the activated carbon filter on the flow guide pipes, and connecting the water collecting pipes with the lower ends of the plurality of flow guide pipes.

And step 3, installing a water outlet pipe, and installing a water purifying and filtering device and a control valve on the water outlet pipe.

Compared with the prior art, the invention has the following characteristics and beneficial effects.

1. According to the multi-ribbed floor structure convenient for rainwater utilization, the reservoir is arranged on the multi-ribbed floor, the first overflow hole and the culture plate are arranged inside the reservoir, the surface of the culture plate is provided with the drain hole, and the planting nursery garden is placed above the culture plate, so that rainwater can be absorbed by roots and stems of the planting nursery garden when raining; when the rainfall is medium and heavy rain, the saturated water in the planting nursery soil can leak through the drain hole on the culture plate, and then is filtered through the filter screen and stored in the bottom of the reservoir, when the stored water level is consistent with the height of the first overflow hole formed in the surface of the reservoir, the rainwater can be stored in the reservoir completely, the water is provided for the subsequent planting nursery, when the rainfall in the reservoir is higher than the first overflow hole, the redundant rainwater can be drained through the first overflow hole, and the drained water in the reservoir can be drained to a pipeline connected with the second overflow hole.

2. According to the multi-ribbed floor structure convenient for rainwater utilization, the enclosure is arranged around the multi-ribbed floor, the flow guide pipe and the water collection pipe are arranged on one side of the enclosure, the waterproof ring plate, the transverse partition plate and the longitudinal partition plate are arranged above the periphery of the water storage tank, the activated carbon filter is arranged on the surface of the flow guide pipe, the water purification filtering device and the control valve are arranged on the water outlet pipe, so that when the rain falls into the middle or heavy rain and the water storage amount of the water storage tank is higher than an overflow line, redundant rainwater is guided into the flow guide pipe through the water discharge pipe, the rainwater is secondarily filtered through the activated carbon filter on the flow guide pipe, most of impurities in the rainwater can be effectively filtered, the filtered rainwater is collected into the water collection pipe, and the rainwater is filtered for three times through the water purification filtering device on the water outlet pipe, so that fine impurities, odor and germs in the rainwater can be reduced, and then the treated rainwater is discharged for use through a control valve.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Figure 1 is a schematic view of the overall structure of a multi-ribbed floor structure of the invention.

Figure 2 is a schematic view of the vertical section structure of the multi-ribbed floor body of the invention.

Fig. 3 is an enlarged schematic view of point a in fig. 2.

FIG. 4 is a schematic view showing the structure of the present invention in which a filter net and a culture plate are provided on the upper part of a water reservoir.

Fig. 5 is a schematic structural view of the waterproof gasket of the present invention, in which a horizontal partition and a vertical partition are provided.

Fig. 6 is a schematic view of the structure of the water reservoir of the present invention.

FIG. 7 is a schematic view of the structure of a culture plate according to the present invention.

Fig. 8 is a schematic structural view of the filter net of the present invention.

Reference numerals: 1-enclosure, 2-transverse rib beam, 3-waterproof ring plate, 4-transverse clapboard, 5-planting nursery garden, 6-draft tube, 7-activated carbon filter, 8-water collecting tube, 9-water purifying filter device, 10-control valve, 11-water outlet tube, 12-culture plate, 13-water discharging hole, 14-filter screen, 15-reservoir, 15.1-reservoir unit, 16-first overflow hole, 17-lateral waterproof layer, 18-ribbed floor body, 18.1-ribbed floor slab, 18.2-foundation layer, 18.3-heat preservation layer, 18.4-floor waterproof layer, 18.5-leveling layer, 19-bottom waterproof layer, 20-longitudinal clapboard, 21-rectangular unit lattice, 22-longitudinal rib beam, 23-support plate and 24-second overflow hole.

Detailed Description

As shown in fig. 1-8, the multi-ribbed floor structure convenient for rainwater utilization comprises a multi-ribbed floor main body 18; the device also comprises a water storage structure, a nursery culture structure and a rainwater recovery device; the top of the dense-rib floor main body 18 is provided with a fence 1 along the whole length of the peripheral edge of the dense-rib floor main body 18; the bottom of the multi-ribbed floor main body 18 is provided with a transverse rib beam 2 and a longitudinal rib beam 22 at intervals; the water storage structure is arranged at the lower part of the inner side of the enclosure 1 and comprises a bottom waterproof layer 19, a side waterproof layer 17 and a reservoir 15; the bottom waterproof layer 19 is arranged on the top of the dense rib floor main body 18 on the inner side of the enclosure 1; the side waterproof layers 17 are coated on the inner side surfaces of the enclosure 1 along the periphery of the top of the bottom waterproof layer 19; the water reservoir 15 is arranged at the top of the bottom waterproof layer 19, and the top of the water reservoir 15 is flush with the top of the side waterproof layer 17; a plurality of first overflow holes 16 are formed in the upper part of the side wall of the water reservoir 15, and a filter screen 14 is laid in the water reservoir 15 and above the first overflow holes 16; second overflow holes 24 are formed in the positions, corresponding to the first overflow holes 16, on the enclosure 1 and the side waterproof layer 17;

the nursery culture structure comprises a culture plate 12, a planting nursery 5 and a waterproof ring plate 3; the culture plate 12 is arranged in the water storage tank 15 and is positioned above the filter screen 14; the plate surface of the culture plate 12 is provided with drain holes 13 at intervals; the planting nursery 5 is laid on the top surface of the culture plate 12; the waterproof ring plate 3 is arranged at the top of the water storage tank 15 along the inner side surface of the enclosure 1, and the top of the waterproof ring plate 3 is flush with the top of the enclosure 1; waterproof sealant is arranged at the joint between the waterproof ring plate 3 and the outer side wall of the reservoir 15; a diaphragm plate 4 and a longitudinal diaphragm plate 20 are arranged in the waterproof ring plate 3; the transverse partition plate 4 and the longitudinal partition plate 20 divide the inner space of the waterproof ring plate 3 into a group of rectangular unit cells 21;

the rainwater recovery device comprises a flow guide pipe 6, a water collecting pipe 8 and a water outlet pipe 11; the flow guide pipes 6 are arranged in a group, and the upper end of each flow guide pipe 6 is correspondingly connected with the drain hole 13; an active carbon filter 7 is arranged on the draft tube 6; the water collecting pipe 8 is connected to the lower ends of the group of flow guide pipes 6 and is communicated with the group of flow guide pipes 6; the water outlet pipe 11 is connected to the middle of the bottom of the water collecting pipe 8, and a water purifying and filtering device 9 and a control valve 10 are sequentially arranged on the water outlet pipe 11 from top to bottom.

In this embodiment, the multi-ribbed floor main body 18 comprises a multi-ribbed floor 18.1, a base layer 18.2, a heat-insulating layer 18.3, a floor waterproof layer 18.4 and a leveling layer 18.5 which are sequentially arranged from bottom to top; the distance between the adjacent transverse rib beams 2 at the bottom of the multi-ribbed floor system main body 18 is not more than 1.5m, and the distance between the adjacent longitudinal rib beams 22 at the bottom of the multi-ribbed floor system main body 18 is not more than 1.5 m; the bidirectional dense-rib floor bears the load together under the bidirectional action, so that the stress performance is better.

In this embodiment, the reservoir 15 is formed by splicing a group of reservoir units 15.1; the filter screen 14 and the culture plate 12 are arranged in each reservoir unit 15.1; the planting nursery 5 is correspondingly arranged on each culture plate 12 to form a water storage and soil covering planting roof; the water storage and soil covering planting roof is a roof structure which stores water and soil and plants by taking a building roof platform as a support, has the advantages of fully utilizing rainwater, reducing the irrigation times and realizing the effect of free irrigation and maintenance according to the capacity of the reservoir 15.

In this embodiment, the nursery 5 is constructed by laying a planting soil layer on the cultivation plate 12 and planting green plants on the planting soil layer. The contents of all components of soil in the planting soil layer are as follows: 45% of mineral, 5% of organic matter, 20% of air and 30% of water. The soil aggregate is 1-5 mm optimally, and the thickness of the planting soil layer is 2-5 cm optimally.

In this embodiment, the cross section of the longitudinal partition plate 20 is trapezoidal, and the longitudinal partition plate 20 is located above the longitudinal seam of the transversely adjacent reservoir units 15.1; the cross section of the diaphragm plate 4 is trapezoidal, and the diaphragm plate 4 is positioned above the transverse seam of the longitudinally adjacent water storage tank unit 15.1.

In this embodiment, the height of the enclosure 1 is not less than 1.2 m; the height of the side waterproof layer 17 is not less than 0.6 m.

In this embodiment, the side waterproof layer 17 and the bottom waterproof layer 19 are made of synthetic polymer material, asphalt waterproof material, polymer modified asphalt material, or waterproof mortar material.

In this embodiment, support plates 23 are circumferentially arranged on the inner side wall of the water reservoir 15 at intervals corresponding to the connection position of the filter screen 14; the supporting plate 23 is L-shaped, and the vertical edge of the supporting plate 23 is connected with the side wall of the reservoir 15; the filter screen 14 is set up on the horizontal side of the support plate 23.

In this embodiment, a soft drain pipe is pre-buried in the hole of the first overflow hole 16 or a water permeable material for retaining soil is filled in the hole, so that the overflowed water can be transported to the draft tube 6 for discharging; when the water level in the reservoir 15 rises to a level higher than the first overflow holes 16 during rainfall, the excess water overflows along the first overflow holes 16 into the draft tube 6 and is discharged.

The construction method of the multi-ribbed floor structure convenient for rainwater utilization comprises the following steps.

Step one, constructing a multi-ribbed floor main body 18, a transverse rib beam 2 and a longitudinal rib beam 22, wherein the transverse rib beam 2 and the longitudinal rib beam 22 are integrally formed with the multi-ribbed floor main body 18.

And step two, performing vertical mold pouring and maintenance of the enclosure 1, and arranging a sealing waterproof bonding layer at the joint position of the enclosure 1 and the dense rib floor main body 18 to enable the pouring structure to be combined into a whole.

And step three, respectively arranging a bottom waterproof layer 19 and a side waterproof layer 17 on the top of the dense-rib floor main body 18 and the inner side surface of the enclosure 1.

Step four, constructing a reservoir 15: the water reservoir 15 is disposed on the top of the bottom waterproof layer 19 with the peripheral side walls of the water reservoir 15 in surface contact with the side waterproof layers 17.

And step five, installing a filter screen 14 in the water storage tank 15.

And step six, sequentially installing a culture plate 12, a planting nursery 5 and a waterproof ring plate 3.

And step seven, installing a rainwater recovery device until the construction is finished.

In this embodiment, after the enclosure 1 is poured, the second overflow hole 24 is drilled on the surface of the enclosure 1, the required first overflow hole 16 is drilled on the surface of the reservoir 15, and dust generated by the drilling is cleaned.

In this embodiment, the specific step of installing the rainwater recovery device in the seventh step is as follows.

Step 1, one end of a draft tube 6 penetrates through a second overflow hole 24 on the surface of the enclosure 1 and is communicated with a first overflow hole 16 on the surface of a water storage tank 15, and polyurethane foam caulking agents are used for sealing the draft tube 6 and the first overflow hole 16.

And 2, mounting the activated carbon filter 7 on the flow guide pipes 6, and connecting the water collecting pipes 8 with the lower ends of the plurality of flow guide pipes 6.

And step 3, installing a water outlet pipe 11, and installing a water purifying and filtering device 9 and a control valve 10 on the water outlet pipe 11.

The above embodiments are not intended to be exhaustive or to limit the invention to other embodiments, and the above embodiments are intended to illustrate the invention and not to limit the scope of the invention, and all applications that can be modified from the invention are within the scope of the invention.