CN218562517U - Bottom plate post-cast strip drainage system - Google Patents
Bottom plate post-cast strip drainage system Download PDFInfo
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- CN218562517U CN218562517U CN202222486434.XU CN202222486434U CN218562517U CN 218562517 U CN218562517 U CN 218562517U CN 202222486434 U CN202222486434 U CN 202222486434U CN 218562517 U CN218562517 U CN 218562517U
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Abstract
The utility model belongs to the technical field of the building and specifically relates to a bottom plate post-cast strip drainage system. The utility model provides a pair of bottom plate post-cast strip drainage system, including set up drainage device in the original soil layer of waterproof additional layer bottom and be linked together with drainage device and be used for collecting the sump pit of drainage device drainage, seted up the blind ditch slot in the original soil layer, drainage device is for installing the plastics blind ditch in the blind ditch slot. The beneficial effects of the utility model reside in that structural integrity is strong, is convenient for connect, and the labour saving and power saving that saves labour, non-deformable, and it can be good to dredge waterborne.
Description
Technical Field
The utility model belongs to the technical field of the building and specifically relates to a bottom plate post-cast strip drainage system.
Background
In the building process of the basement, because the floor area is large, the post-cast belt is usually arranged to be used as a temporary construction joint so as to meet the requirements of contraction and settlement of the basement floor concrete and avoid cracking of the floor concrete. The post-cast strip is required to be cast and sealed in the later stage, but because the post-cast strip is not integrated with the bottom plate concrete body, a gap is inevitably formed between the post-cast strip and the bottom plate concrete. Although the water-stop steel plate and the additional waterproof layer are added, the waterproof performance of the arrangement is limited. If the groundwater pressure rises suddenly in a sudden storm weather or the like, if drainage measures are lacked and the waterproofing measures are only partially effective, the post-cast strip, which is a weak part of the floor, inevitably leaks, which affects the use or safety of the building.
For solving this problem, chinese utility model patent with patent publication No. CN214363563U discloses a subside post-cast strip and seal in advance and use the french drain, it has adopted one kind and has piled up the material in square road groove and the french drain main part that forms carries out the drainage to the post-cast strip, through set up the french drain main part in the bed course below, be connected the french drain main part with the storehouse outside sump pit, and take drainage measure when reaching the early warning through observing the water level height, effectual solution groundwater level buoyancy is to the influence of structural quality, can realize subsiding the post-cast strip and seal in advance, reasonable basement and the engineering construction of basement roof of interlude, can effectively solve subside the influence that groundwater level buoyancy caused the structural quality after the post-cast strip seals in advance, guarantee the safety of structure.
Such an arrangement still has its limitations. In CN214363563U, the blind ditch is configured as a structure formed by stacking geotextile, broken stone, coarse sand and the like layer by layer. The structure is not a whole among all layers, so that a plurality of layers of laying needs to be carried out respectively in the process of setting the blind ditch, time and labor are wasted, and the laying effect is difficult to control. Furthermore, the water dredging performance is limited because the water is guided by the pore diameter between the broken stone and the coarse sand, and the lamellar structure can slide or deform after receiving soil pressure and water pressure for a period of time, so that the stability of the main structure of the blind ditch can not be ensured, and the water drainage efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned defect that exists among the prior art, provide a structural integrity strong, be convenient for connect, labour saving and power saving, non-deformable, and dredge the bottom plate post-cast strip drainage system that water property is good.
The utility model provides a pair of bottom plate post-cast strip drainage system adopts following technical scheme:
a bottom plate post-cast strip drainage system comprises a drainage device arranged in an original soil layer at the bottom of a waterproof additional layer and a water collecting well communicated with the drainage device and used for collecting drainage water of the drainage device, wherein a blind ditch groove is formed in the original soil layer, and the drainage device is a plastic blind ditch arranged in the blind ditch groove. By adopting the technical scheme, compared with the prior art, the method has the following advantages:
different from the traditional blind ditch which is filled with a filter layer and broken stones after excavation, the plastic core body of the plastic blind ditch takes thermoplastic synthetic resin as a main raw material, is modified, extrudes fine plastic strand wires through a nozzle in a hot melting state, and then fuses the extruded plastic strand wires on nodes through a forming device to form a three-dimensional net structure. The plastic blind ditch overcomes the defects of the traditional blind ditch, and has the advantages of high surface opening rate, good water collection performance, large void ratio, good drainage performance, strong pressure resistance, good flexibility, good adaptability to soil deformation, good durability, light weight, convenient construction, great reduction of labor intensity of workers, high construction efficiency and the like.
The plastic blind ditch is used as a drainage device in a bottom plate post-cast strip drainage system, is a formed pipe, and is better laid compared with geotechnical cloth, broken stones and coarse sand which need to be laid layer by layer, so that the construction difficulty of the drainage device is reduced, and the possibility of reduction of the effect of the drainage device caused by uneven construction quality in the construction of the drainage device is reduced; the formed pipe plastic blind ditch is used as a drainage device, and compared with a drainage channel formed by stacking broken stones and coarse sand, the formed pipe plastic blind ditch has the advantages of large water guiding performance and drainage performance, large aperture, strong anti-sliding or sedimentation deformation capability, capability of effectively discharging underground water and capability of preventing the water seepage of a basement bottom plate.
Preferably, the outer part of the plastic blind ditch is wrapped with geotextile.
Because there is the hole in plastics french drain surface, for preventing that the granule object in the aquatic of treating the row from blockking up the hole that its surface was used for permeating water, and set up a geotechnological cloth and filter water, reduce plastics french drain and take place to block up and influence the possibility of drainage in dredging water process.
Preferably, sand is filled between the blind ditch groove and the plastic blind ditch.
Because the soil layers at the bottom of the basement are all tamped soil layers, the permeability is limited, and the filling layer of sand and stone is arranged outside the plastic blind ditch, the permeability of the blind ditch can be ensured, and the drainage efficiency is improved.
Preferably, the gram weight of the geotextile is more than or equal to 250 g/square meter.
When the gram weight of the geotextile is smaller, the geotextile is thinner and thinner, so that the geotextile has poor puncture resistance and poor filtering performance, is easy to settle or is easy to break when being rubbed by sand, and has adverse effects on the use and performance of the plastic blind ditch.
Preferably, the wall of the water collecting well is provided with an access pipe for communicating with the plastic blind ditch.
The access pipe is arranged on the water collecting well wall, so that water in the plastic blind ditch can be more effectively guided into the water collecting well. The access pipe is preset on the wall of the water collecting well when the water collecting well is poured, so that the problem that the water collecting and draining are difficult due to the fact that a communication path between the access pipe and the water collecting well is formed for the draining device or the draining device extends into the water collecting well from other parts in the later period can be avoided.
Preferably, when the bottom plate is provided with a plurality of post-pouring belts, each post-pouring belt is correspondingly provided with one plastic blind ditch, and the plastic blind ditches are mutually communicated.
The plastic blind ditches are communicated with one another, so that a drainage pipe network is formed between the plastic blind ditches, collected water to be drained can circulate among the plastic blind ditches, and drainage of water in different parts under the bottom plate is facilitated.
Preferably, different plastic blind ditches are communicated with the water collecting well through the same access pipe.
Through same access pipe connection to the sump pit, drainage system's setting can be simplified to access pipe and sump pit's shutoff provides convenience after finishing for later stage engineering construction.
Preferably, the cross-sectional diameter of the plastic blind groove is 80mm-150mm.
The diameter of the selected section is too small, so that drainage is not timely, and the possibility of water seepage is improved; if the selected section is too large, the excavation engineering amount is increased, and the strength of the soil layer can be weakened. The diameter of the section of the plastic blind ditch is selected to be 80mm-150mm, so that the requirement of drainage can be met, and too much excavation is not needed.
Preferably, the plastic blind ditch is located in the middle of the bottom of the post-cast strip.
The plastic blind ditch is arranged in the middle of the bottom of the post-cast strip, so that the drainage efficiency of the drainage device on two sides of the post-cast strip is basically consistent, and the condition that drainage on one side is not smooth is avoided.
Preferably, the surface opening rate of the plastic blind ditch is more than or equal to 85 percent.
Because the plastic blind ditch is buried underground for work, even if sand and geotextile play a role in filtering, sand and sand can be attached to the surface of the plastic blind ditch, and if the opening rate is lower than 85 percent, the possibility of clogging is increased.
Through implementing above-mentioned technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses a bottom plate post-cast strip drainage system structure is reliable, and non-deformable is little to soil layer structure damage, and drainage of being convenient for and drainage efficiency are strong, and construction convenience is simple high-efficient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a cross-sectional view of a floor post-cast strip drainage system according to an embodiment of the present invention;
fig. 2 is a detailed view of a plastic blind ditch used in a floor post-cast strip drainage system according to an embodiment of the present invention.
In the figure: a blind trench 1; a drainage device 2; a plastic blind ditch 20; a geotextile 21; a waterproof additional layer 3; a waterproof protective layer 31; an isolation layer 32; a waterproof layer 33; a concrete pad and a gravel pad 34.
Detailed Description
The invention is explained in further detail below with reference to the figures and the specific embodiments.
It should be noted that the following embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Example 1
The embodiment provides a bottom plate post-cast strip drainage system, and takes a post-cast strip of a basement bottom plate as an example.
As shown in fig. 1, there is a waterproof additional layer 3 under the basement floor, and the waterproof additional layer 3 is sequentially from the position close to the basement floor to the position far away from the basement floor: waterproof protective layer 31, isolation layer 32, waterproof layer 33, concrete and rubble bed course. And an original soil layer is arranged below the concrete and gravel cushion layer.
The specific structure of the drainage system of the embodiment is as follows: and a blind ditch groove 1 is formed in an original soil layer at the bottom of the post-cast strip. As shown in fig. 2, the drainage devices 2 are arranged in the blind ditch grooves 1, the drainage devices 2 are plastic blind ditches 20, the plastic blind ditches 20 are wrapped with geotextile 21, and the grammage of the geotextile 21 should be not less than 250 g/square meter, preferably 300 g/square meter in this embodiment. The gap between the plastic blind ditch 20 and the blind ditch groove 1 can be filled with no filler or graded broken stones, in the embodiment, the gap between the plastic blind ditch 20 and the blind ditch groove 1 is filled with graded broken stones, and the broken stones are required to be filled in the gap and cover the surface of the plastic blind ditch 20 after the plastic blind ditch 20 is placed.
The cross-sectional diameter of the plastic blind ditch 20 is 80mm-150mm, preferably 80mm in this embodiment. And correspondingly, the blind ditch groove 1 should also be selected with a proper excavation size, and in the embodiment, the excavation size of the blind ditch groove 1 is preferably 200mmx200mm. The surface aperture ratio of the plastic blind ditch 20 is more than or equal to 85%, and preferably 90% in the embodiment.
When the bottom plate is provided with a plurality of post-pouring belts, each post-pouring belt corresponds to one plastic blind ditch 20, and the plastic blind ditches 20 are mutually communicated. When the length of the single plastic blind ditch 20 is shorter than that of the post-pouring strip, two or more plastic blind ditches 20 need to be butted for use, and after the butted plastic blind ditches 20 penetrate through the pores of the plastic blind ditches 20 by using plastic ties, the two plastic blind ditches 20 are butted in a straight line shape. When the plastic blind ditches 20 between different post-pouring belts need to be connected with each other and turns exist between the post-pouring belts, the plastic blind ditches 20 are connected in a T shape and a cross shape by adopting the equal-diameter positive tee joint and the positive four-way joint of the UPVC.
The plastic blind ditches 20 are connected with each other and then communicated to the water collecting well through the same access pipe. The access pipe is prefabricated on the wall of the water collecting well when the water collecting well is built, the UPVC pipe is adopted to wrap and protect the access pipe in construction, and a UPVC pipe cap is used at the end part of the access pipe to seal the end part of the access pipe so as to prevent cement sand stone from entering the access pipe in construction and causing the blockage of the access pipe.
Example 2
This embodiment provides a bottom plate post-cast strip drainage system, takes the post-cast strip of basement bottom plate as an example.
There is waterproof additional layer 3 under basement bottom plate, and waterproof additional layer 3 is from closely following basement bottom plate to keeping away from basement bottom plate and is in proper order: waterproof protective layer 31, isolation layer 32, waterproof layer 33, concrete and rubble bed course. And a soil layer is arranged below the concrete and gravel cushion layer.
The specific structure of the drainage system of the embodiment is as follows: and a blind ditch groove 1 is formed in an original soil layer at the bottom of the post-cast strip. The drainage device 2 is arranged in the blind ditch groove 1, the drainage device 2 is a plastic blind ditch 20, the plastic blind ditch 20 is wrapped with geotextile 21, and the grammage of the geotextile 21 in the embodiment is preferably 280 g/square meter. In the embodiment, graded broken stones are filled between the plastic blind ditch 20 and the blind ditch groove 1, the broken stones should fill the gap between the plastic blind ditch 20 and the blind ditch groove 1, and the surface of the plastic blind ditch 20 is covered after the plastic blind ditch 20 is placed.
The cross-sectional diameter of the plastic blind ditch 20 is 80mm-150mm, preferably 120mm in this embodiment. And correspondingly, the blind ditch groove 1 should also be selected with a proper excavation size, and in the embodiment, the excavation size of the blind ditch groove 1 is preferably 30mmx300mm. The surface aperture ratio of the plastic blind ditch 20 is more than or equal to 85%, and preferably 85% in the embodiment.
When the bottom plate is provided with a plurality of post-pouring belts, each post-pouring belt corresponds to one plastic blind ditch 20, and the plastic blind ditches 20 are mutually communicated. When the length of the single plastic blind ditch 20 is shorter than that of the post-pouring strip, two or more plastic blind ditches 20 need to be butted for use, and after the butted plastic blind ditches 20 penetrate through the pores of the plastic blind ditches 20 by using plastic ties, the two plastic blind ditches 20 are butted in a straight line shape. When the plastic blind ditches 20 between different post-pouring belts need to be connected with each other and turns exist between the post-pouring belts, the plastic blind ditches 20 are connected in a T shape and a cross shape by adopting the equal-diameter positive tee joint and the positive four-way joint of the UPVC.
The plastic blind ditches 20 are connected with each other and then communicated to the water collecting well through the same access pipe. The access pipe is prefabricated on the wall of the water collecting well when the water collecting well is built, the UPVC pipe is adopted to wrap and protect the access pipe in construction, and a UPVC pipe cap is used at the end part of the access pipe to seal the end part of the access pipe so as to prevent cement, gravel and sand from entering the access pipe in construction and causing blockage of the access pipe.
The applicant states that the above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. The bottom plate post-cast strip drainage system is characterized by comprising a drainage device (2) arranged in an original soil layer at the bottom of a post-cast strip cushion layer and a water collecting well communicated with the drainage device (2) and used for collecting water drained by the drainage device (2), wherein a blind ditch groove (1) is formed in the original soil layer, and the drainage device (2) is a plastic blind ditch (20) arranged in the blind ditch groove (1).
2. A floor strip drainage system as claimed in claim 1, wherein the exterior of the plastic blind ditches (20) is wrapped with geotextile (21).
3. A floor post-cast strip drainage system as claimed in claim 1, characterised in that sand is also filled between the blind trench (1) and the plastic blind trench (20).
4. A floor post-cast strip drainage system as claimed in claim 2, wherein the grammage of the geotextile (21) is greater than or equal to 250 grams per square meter.
5. A floor strip drainage system as claimed in claim 1, wherein the walls of the collector well are provided with access pipes for communication with the plastic blind gutters (20).
6. A floor post-cast strip drainage system as claimed in claim 1, wherein when the floor has a plurality of post-cast strips, one plastic blind ditch (20) is correspondingly arranged on each post-cast strip, and the plurality of plastic blind ditches (20) are communicated with each other.
7. A floor strip drainage system as claimed in claim 6, wherein the different plastic gutters (20) communicate with each other via the same access pipe to the sump well.
8. A floor post-cast strip drainage system as claimed in claim 1, wherein the cross-sectional diameter of the plastic blind ditch (20) is 80mm to 150mm.
9. A floor post-cast strip drainage system as claimed in claim 1, characterised in that the plastic blind ditch (20) is located in the middle of the bottom of the post-cast strip.
10. A floor strip drainage system as claimed in claim 1, wherein the surface open area of the plastic blind ditch (20) is greater than or equal to 85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222486434.XU CN218562517U (en) | 2022-09-20 | 2022-09-20 | Bottom plate post-cast strip drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222486434.XU CN218562517U (en) | 2022-09-20 | 2022-09-20 | Bottom plate post-cast strip drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218562517U true CN218562517U (en) | 2023-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222486434.XU Active CN218562517U (en) | 2022-09-20 | 2022-09-20 | Bottom plate post-cast strip drainage system |
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| Country | Link |
|---|---|
| CN (1) | CN218562517U (en) |
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2022
- 2022-09-20 CN CN202222486434.XU patent/CN218562517U/en active Active
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