CN111501959A - Combined cast-in-situ drainage ditch and construction method - Google Patents
Combined cast-in-situ drainage ditch and construction method Download PDFInfo
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- CN111501959A CN111501959A CN202010348302.3A CN202010348302A CN111501959A CN 111501959 A CN111501959 A CN 111501959A CN 202010348302 A CN202010348302 A CN 202010348302A CN 111501959 A CN111501959 A CN 111501959A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The invention discloses a combined cast-in-place drainage ditch and a construction method, wherein the combined cast-in-place drainage ditch comprises a ditch and a plurality of combined cast-in-place structures; the combined cast-in-place structure comprises a cement mortar filling layer, a cast-in-place floor layer, an inner wall compacted plastering layer, a prefabricated wall plate and a drainage ditch cover plate; a plurality of prefabricated wall plates are intermittently arranged on two walls of the groove, and an integrally formed cast-in-place floor layer is arranged between the prefabricated wall plates and the ground of the groove; inner wall compacted plastering layers are arranged on the prefabricated wall plates and the cast-in-place floor layer; a cement mortar filling layer is arranged between the prefabricated wallboards and the two walls of the groove; a drainage ditch cover plate is arranged on the ditch groove; and settlement seams are arranged between the combined cast-in-place structures. The drainage ditch is constructed in a way that the side wall of the drainage ditch is prefabricated, the bottom plate is cast in situ, grooves are reserved on the side surface and the bottom of the wall plate to realize quick construction of the drainage ditch, the wall plate of the drainage ditch is installed in sections, the bottom plate of the drainage ditch is cast at one time, and settlement joints are reserved.
Description
Technical Field
The invention belongs to the technical field of urban construction, relates to a drainage ditch construction method, and relates to a combined cast-in-place drainage ditch and a combined cast-in-place drainage ditch construction method.
Background
In recent years, the country vigorously promotes the construction of sponge cities, and governs the phenomena of rainwater waterlogging in districts and city sea-seeing on roads. The drainage ditch is one of facilities which are used for collecting and draining rainwater in cities and have better effects, and is widely applied to communities and municipal road sides. Template quantity and handling capacity are big in traditional escape canal work progress, and need the installation to hang the mould, very easily cause phenomenons such as hourglass thick liquid bloated mould, and during sponge city construction escape canal simultaneously, the current situation road has formed, and the construction site is narrow, and safe civilization construction requirement is higher, and traditional escape canal construction, it is great to current situation traffic influence, the installation, demolish template construction cycle length, the difficult control construction technology of operating personnel, the construction often can not reach the designing requirement, later stage rectification, rework phenomenon is frequent.
In view of this, aiming at the characteristics of narrow construction site, complicated formwork erecting work and the like, and simultaneously reducing the manufacturing cost, the invention needs to provide a simple and effective combined cast-in-situ drainage ditch construction method. The economical efficiency and the safety of construction are ensured, the construction of the cast-in-place drainage ditch is simple, convenient and quick, the processing and the installation are convenient, and the purpose of saving resources is achieved.
Disclosure of Invention
The invention aims to provide a construction method of a combined cast-in-situ drainage ditch, which solves the problems of narrow construction site, complex formwork erecting work, long construction period and the like, ensures the economical efficiency and safety of construction, ensures the construction of the cast-in-situ drainage ditch to be simple, convenient and quick, is convenient to process and install and reduces the manufacturing cost; has better technical and economic benefits.
In order to achieve the purpose, the main technical solution of the invention is to provide a combined cast-in-place drainage ditch, which is characterized in that: comprises a groove and a plurality of combined cast-in-place structures;
the combined cast-in-place structure comprises a cement mortar filling layer, a cast-in-place floor layer, an inner wall compacted plastering layer, a prefabricated wall plate and a drainage ditch cover plate; a plurality of prefabricated wall plates are intermittently arranged on two walls of the groove, and an integrally formed cast-in-place floor layer is arranged between the prefabricated wall plates and the ground of the groove; inner wall compacting and plastering layers are arranged on the prefabricated wall boards and the cast-in-place floor layer; a cement mortar filling layer is arranged between the prefabricated wallboards and the two walls of the groove; a drainage ditch cover plate is arranged on the groove; and settlement seams are arranged between the combined cast-in-place structures.
The invention also provides a construction method of the combined cast-in-place drainage ditch, which is characterized by comprising the following steps of:
step 1: excavating a groove; breaking a concrete layer, a base layer and a roadbed below a road asphalt layer and digging a groove;
step 2: compacting and leveling the groove bottom; tamping the bottom of the groove after excavating to a designed elevation, and detecting the compaction degree;
and step 3: mounting and adjusting the prefabricated wall plate; transporting prefabricated wall plates which are manufactured and maintained in advance to the site for installation, and controlling the distance between the prefabricated wall plates and the top surface elevation of the prefabricated wall plates during installation;
and 4, step 4: reserving a settlement joint; setting a settlement joint in the groove to divide the groove into a plurality of construction sections, wherein a water-swelling adhesive tape is arranged on the settlement joint;
and 5: pouring concrete; in each construction section, a template and a support are installed at the interval joint of the prefabricated wall panel, and the interval joint of the prefabricated wall panel and the bottom plate are cast and formed at one time by using micro-expansive concrete to serve as a cast-in-place floor layer;
step 6: plastering the inner wall; the maintenance strength of the cast-in-place floor layer reaches more than 80 percent, the inner wall of the groove is plastered, the inner wall is kept moist by sprinkling water before plastering, and waterproof mortar is used for plastering, compacting and flattening the inner wall;
and 7: pouring seams outside the ditches; filling and filling the gap between the groove and the prefabricated wall plate with cement mortar or fine aggregate concrete and reinforcing the stratum at the same time;
and 8: mounting a cover plate; and installing the drainage ditch cover plate on the groove according to the reference line.
Preferably, two sides of the prefabricated wall plate are provided with wall plate longitudinal grooves, and the bottom edge is provided with a wall plate transverse groove; adopt the design of recess, combine little expanded concrete, can play and prevent that the water in the escape canal from permeating the soil layer around the escape canal, cause the purpose that escape canal and surrounding structure are inhomogeneous to subside.
Preferably, the upper end of the groove is provided with an asphalt caulking layer; the upper end of the groove is provided with the flexible material of the asphalt caulking layer, and the main purpose is to prevent the scouring rainwater of the road from penetrating into the soil layer around the drainage ditch along the outer edge of the drainage ditch, so that the pavement around the drainage ditch is settled.
Preferably, a water-swelling adhesive tape is arranged on the settlement joint; the water-swelling adhesive tape has the advantages that if the drainage ditch settlement joint has a water leakage phenomenon, the water-swelling adhesive tape can absorb water to achieve the purpose of blocking water, and the drainage ditch is prevented from water seepage to cause the settlement of the drainage ditch.
Preferably, in the step 1, stopping excavation 150mm away from the bottom of the groove, and manually excavating to a groove design elevation; avoid digging and disturbing the soil layer under the escape canal beyond to avoid the problem that the bearing capacity descends because of disturbing the escape canal soil layer brings.
Preferably, in the step 4, a settlement joint is reserved in the groove every 30 meters; the purpose of setting one settlement joint every 30 meters is to release the thermal expansion and cold contraction stress of the drainage ditch and avoid the cracks of the drainage ditch caused by uneven settlement of the base layer.
Preferably, in step 7, cement mortar or fine aggregate concrete is used for pouring until the distance of 100mm from the pavement is reached, the pouring is stopped, and the rest part is filled with asphalt; fill up the gap between escape canal and the road surface, play the purpose of consolidating surrounding soil layer simultaneously, prevent that the escape canal from producing lateral shifting and destroying.
Preferably, in step 8, adjusting and leveling between the drainage ditch cover plate and the groove by using cement mortar; beautiful appearance, prevents the drain cover plate from loosening and generating abnormal sound, and is comfortable to drive.
Preferably, in step 8, the gap between the drain cover plate and the current asphalt pavement is caulked with a modified asphalt or polyvinyl chloride cement.
Compared with the prior art, the invention has the following beneficial effects:
(1) the mode that the drainage ditch wallboard is prefabricated and the bottom plate is poured is adopted, so that a large number of hanging molds are avoided, the construction speed is increased, and the influence of construction on the surrounding environment is reduced.
(2) The prefabricated members of the drainage ditch wall plate adopt grooves transversely and longitudinally, and finally, the water seepage at the joint after the bottom plate and the wall plate are poured is avoided in a cast-in-place mode.
(3) The bottom plate adopts the cast-in-place form of little expanded concrete, and does not adopt the whole prefabrication of escape canal, can reach the better roughness in ditch groove bottom when consolidating the ditch groove bottom, can be used to the relatively poor condition of geology.
(4) By adopting the construction method, the construction efficiency and effect of the drainage ditch are improved, and the probability and investment of leakage repair of the drainage ditch in the later period are reduced.
(5) The construction method disclosed by the invention has the advantages of simplicity, short construction period, good overall stability of the obtained drainage ditch, strong applicability, smooth joint between the drainage ditch and the current road, deformation resistance and the like.
Drawings
FIG. 1 is a schematic view of a combined cast-in-place drain of the present invention;
figure 2 is a cross-sectional view of an integrated cast-in-place drain.
In the figure: 1-cement mortar filling layer, 2-wallboard longitudinal groove, 3-wallboard transverse groove, 4-cast-in-place floor layer, 5-inner wall compaction plastering layer, 6-prefabricated wallboard, 7-drainage ditch cover plate, 8-asphalt caulking, 9-water-swelling adhesive tape, 10-template, 11-support and 12-micro-swelling concrete.
Detailed Description
In order to facilitate the understanding and implementation of the present invention for those of ordinary skill in the art, the present invention is further described in detail with reference to the accompanying drawings and examples, it is to be understood that the embodiments described herein are merely illustrative and explanatory of the present invention and are not restrictive thereof.
Referring to fig. 1 and 2, the combined cast-in-place drainage ditch provided by the invention comprises a groove and a plurality of combined cast-in-place structures; the combined cast-in-place structure comprises a cement mortar filling layer 1, a cast-in-place floor layer 4, an inner wall compacted plastering layer 5, a prefabricated wall plate 6 and a drainage ditch cover plate 7; a plurality of prefabricated wall plates 6 are intermittently arranged on two walls of the groove, and an integrally formed cast-in-place floor layer 4 is arranged between the prefabricated wall plates 6 and the ground of the groove; inner wall compacting and plastering layers 5 are arranged on the plurality of prefabricated wall boards 6 and the cast-in-situ floor layer 4; cement mortar filling layers 1 are arranged between the prefabricated wallboards 6 and the two walls of the groove; a drainage ditch cover plate 7 is arranged on the ditch; and settlement seams are arranged between the combined cast-in-place structures.
The prefabricated wall plate 6 of the embodiment is provided with wall plate longitudinal grooves 2 on two sides and wall plate transverse grooves 3 on the bottom edge; the upper end of the groove is provided with an asphalt caulking layer 8; the settlement joint is provided with a water-swelling adhesive tape 9.
The invention provides a construction method of a combined cast-in-situ drainage ditch, according to the requirement of engineering design, rectangular drainage ditches and drainage ditches with other shapes can be cast in situ by drainage ditch construction equipment, and the construction method only takes the combined cast-in-situ trapezoidal drainage ditch as an example and comprises the following steps:
step 1: excavating a groove;
and (3) breaking and excavating the concrete layer, the base layer and the roadbed below the road asphalt layer by manually matching with a machine, stopping excavating 150mm away from the bottom of the groove, and manually excavating to the designed elevation of the groove.
Step 2: compacting and leveling the groove bottom;
and (5) tamping the bottom of the groove by using a small machine after the groove is excavated to the designed elevation, and detecting the compaction degree. The flatness and the gradient of the groove bottom are ensured, particularly, no broken stone, grass roots and poor soil are required in the side wall area of the installation groove, and the longitudinal gradient is arranged according to strict installation design requirements.
And step 3: mounting and adjusting the prefabricated wall plate 6; transporting prefabricated wall plates 6 which are prefabricated and maintained in advance to the site for installation, and controlling the distance between the prefabricated wall plates 6 and the top surface elevation of the prefabricated wall plates 6 during installation;
and 4, step 4: reserving a settlement joint; setting a settlement joint in the groove to divide the groove into a plurality of construction sections, and setting a water-swelling adhesive tape 9 on the settlement joint;
the ditch groove is reserved every 30 meters and is established a subsiding crack, sets up 2 cm's water-swelling adhesive tape in subsiding crack position and causes the influence in order to prevent the inhomogeneous settlement of ground to the escape canal, and leads to the rainwater in the escape canal to flow into soil matrix.
And 5: pouring concrete; in each construction section, a template 10 and a support 11 are installed at the gap of the prefabricated wall panel 6, and the gap of the prefabricated wall panel 6 and a bottom plate are cast and formed at one time by micro-expansion concrete 12 to serve as a cast-in-place floor layer 4;
a small amount of templates and batten supports are arranged at intervals of the prefabricated wall panel 6, and then the wall panel seams and the bottom plate are cast and formed at one time by micro-expansion concrete 12. Before pouring, the top surface line of the bottom plate is drawn on the prefabricated wall plate 6 by an ink fountain, the pouring speed and the pouring height of concrete are controlled by attention during pouring, and simultaneously the concrete is vibrated compactly.
Step 6: plastering the inner wall; the maintenance strength of the cast-in-place floor layer 4 reaches more than 80 percent, the inner wall of the groove is plastered, the inner wall is kept moist by sprinkling water before plastering, and waterproof mortar is used for plastering, compacting and flattening the inner wall;
the curing strength of the poured concrete reaches more than 80 percent, plastering is carried out in the wall, the inner wall is kept moist by sprinkling water before plastering, waterproof mortar is used for plastering and flattening the inner wall twice, and rainwater in the ditch is ensured not to leak.
And 7: pouring seams outside the ditches; the gap between the groove and the prefabricated wall plate 6 is filled with cement mortar or fine stone concrete and simultaneously the stratum is reinforced;
the gap between the groove and the prefabricated wall plate 6 is filled with cement mortar or fine stone concrete, the stratum can be reinforced at the same time, the influence of the drainage ditch construction on the road is reduced to the minimum, the drainage ditch is poured 100mm away from the road surface and is stopped pouring, and the rest part is filled with asphalt so as to achieve the aim of preventing water outside the ditch.
And 8: mounting a cover plate; mounting the drain cover plate 7 on the trench according to the reference line;
before the drainage ditch cover plate 7 is installed, whether the material specification of the drainage ditch cover plate 7 meets the design and specification requirements is checked, the drainage ditch cover plate 7 is installed on a groove according to a reference line, and if the drainage ditch cover plate is not flat, the drainage ditch cover plate is adjusted and leveled by cement mortar.
The gap between the drainage ditch cover plate 7 and the current asphalt pavement is caulked by the modified asphalt or the polyvinyl chloride cement. The ditch cover plate is prevented from moving under long-term load and rainwater permeates into soil bodies from gaps, so that the drainage ditch sinks.
The side wall of the drainage ditch is prefabricated, the bottom plate is cast in place, grooves are reserved on the side surface and the bottom of the wall plate to realize rapid construction of the drainage ditch, prefabricated blocks on the side wall of the drainage ditch are installed in a line hanging method to strictly control the straightness, a level gauge is used to control the elevation, the drainage ditch is excavated in a segmented mode, the wall plate of the drainage ditch is installed in a segmented mode, the bottom plate of the drainage ditch is poured at one time, and settlement joints are reserved for construction; the method has the advantages of simple construction process, short construction period, strong deformation resistance of the obtained drainage ditch, strong applicability and the like.
It should be understood that the above description of the preferred embodiments is given for clarity and not for any purpose of limitation, and that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a cast-in-place escape canal of combination which characterized in that: comprises a groove and a plurality of combined cast-in-place structures;
the combined cast-in-place structure comprises a cement mortar filling layer (1), a cast-in-place floor layer (4), an inner wall compacted plastering layer (5), a prefabricated wall plate (6) and a drainage ditch cover plate (7); a plurality of prefabricated wall plates (6) are intermittently arranged on two walls of the groove, and an integrally formed cast-in-place floor layer (4) is arranged between the prefabricated wall plates (6) and the ground of the groove; inner wall compacting and plastering layers (5) are arranged on the plurality of prefabricated wall boards (6) and the cast-in-situ floor layer (4); a cement mortar filling layer (1) is arranged between the prefabricated wallboards (6) and the two walls of the groove; a drainage ditch cover plate (7) is arranged on the groove;
and settlement seams are arranged between the combined cast-in-place structures.
2. The combination cast-in-place drain ditch of claim 1, wherein: the two sides of the prefabricated wall plate (6) are provided with wall plate longitudinal grooves (2), and the bottom edge is provided with wall plate transverse grooves (3).
3. The combination cast-in-place drain ditch of claim 1, wherein: and an asphalt caulking layer (8) is arranged at the upper end of the groove.
4. A combined cast-in-place drain ditch according to any one of claims 1 to 3, wherein: and a water-swelling adhesive tape (9) is arranged on the settlement joint.
5. A construction method of a combined cast-in-situ drainage ditch is characterized by comprising the following steps:
step 1: excavating a groove; breaking a concrete layer, a base layer and a roadbed below a road asphalt layer and digging a groove;
step 2: compacting and leveling the groove bottom; tamping the bottom of the groove after excavating to a designed elevation, and detecting the compaction degree;
and step 3: mounting and adjusting the prefabricated wall plate (6); transporting prefabricated wall plates (6) which are prefabricated and maintained in advance to the site for installation, and controlling the distance between the prefabricated wall plates (6) and the top surface elevation of the prefabricated wall plates (6) during installation;
and 4, step 4: reserving a settlement joint; setting a settlement joint in the groove to divide the groove into a plurality of construction sections, wherein a water-swelling adhesive tape (9) is arranged on the settlement joint;
and 5: pouring concrete; in each construction section, a template (10) and a support (11) are installed at the gap of the prefabricated wall plate (6), and the gap of the prefabricated wall plate (6) and a bottom plate are cast and formed at one time by micro-expansion concrete (12) to serve as a cast-in-place floor layer (4);
step 6: plastering the inner wall; the maintenance strength of the cast-in-place floor layer (4) reaches more than 80 percent, the inner wall of the groove is plastered, water is sprayed before plastering to keep the inner wall moist, and waterproof mortar is used for plastering, flattening and smoothing the inner wall;
and 7: pouring seams outside the ditches; the gap between the groove and the prefabricated wall plate (6) is filled with cement mortar or fine stone concrete and simultaneously the stratum is reinforced;
and 8: mounting a cover plate; the drain cover plate (7) is mounted on the trench according to the reference line.
6. The construction method of the combined cast-in-place drainage ditch according to claim 5, wherein: in the step 1, stopping excavation 150mm away from the bottom of the groove, and manually excavating to the designed elevation of the groove.
7. The construction method of the combined cast-in-place drainage ditch according to claim 5, wherein: and step 4, reserving a settlement joint in the groove every 30 meters.
8. The construction method of the combined cast-in-place drainage ditch according to claim 5, wherein: and 7, pouring cement mortar or fine aggregate concrete until the distance between the cement mortar and the fine aggregate concrete is 100mm from the road surface, stopping pouring, and filling the rest part with asphalt.
9. The construction method of the combined cast-in-place drainage ditch according to claim 5, wherein: and 8, adjusting and leveling between the drainage ditch cover plate (7) and the groove by using cement mortar.
10. The construction method of the combined cast-in-place drainage ditch according to any one of claims 5 to 9, wherein: in the step 8, the gap between the drainage ditch cover plate (7) and the current asphalt pavement is caulked by the modified asphalt or the polyvinyl chloride cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010348302.3A CN111501959B (en) | 2020-04-28 | 2020-04-28 | Combined cast-in-situ drainage ditch and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010348302.3A CN111501959B (en) | 2020-04-28 | 2020-04-28 | Combined cast-in-situ drainage ditch and construction method |
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| CN111501959A true CN111501959A (en) | 2020-08-07 |
| CN111501959B CN111501959B (en) | 2022-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114411921A (en) * | 2022-01-26 | 2022-04-29 | 西安公路研究院有限公司 | Method and structure for building roadbed drainage ditch through road reconstruction and extension |
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| CN111501959B (en) | 2022-01-25 |
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