CN109972659B - Novel municipal inspection well structure and construction method - Google Patents
Novel municipal inspection well structure and construction method Download PDFInfo
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- CN109972659B CN109972659B CN201910280271.XA CN201910280271A CN109972659B CN 109972659 B CN109972659 B CN 109972659B CN 201910280271 A CN201910280271 A CN 201910280271A CN 109972659 B CN109972659 B CN 109972659B
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- 238000007689 inspection Methods 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 title claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 239000004567 concrete Substances 0.000 claims abstract description 35
- 239000000835 fiber Substances 0.000 claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 93
- 239000002344 surface layer Substances 0.000 claims description 26
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000009412 basement excavation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/121—Manhole shafts; Other inspection or access chambers; Accessories therefor characterised by the connection between shaft elements, e.g. of rings forming said shaft
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Road Repair (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the technical field of municipal engineering, and particularly relates to a novel municipal inspection well structure and a construction method, wherein the novel municipal inspection well structure comprises a prefabricated shaft, a well cover, a base reinforcing layer, a holding force well ring, color steel fiber concrete and the like; the base layer reinforcement layer is positioned around the prefabricated shaft and at the bottom of the road base layer; the holding force well ring is inlaid in the road base layer, the well cover is fixed on the holding force well ring, the color steel fiber concrete is arranged around the well cover, and the color is consistent with the color of the road surface. The invention improves the strength around the inspection well, improves the construction efficiency, quality and durability of the inspection well, realizes the accuracy of the well ring installation height, and realizes the unification of the color around the well cover and the color of the pavement structure.
Description
Technical Field
The invention belongs to the technical field of municipal engineering, and particularly relates to a novel municipal inspection well structure and a construction method.
Background
The urban road inspection well is used as an important component of municipal pipeline engineering and is also a difficulty and an important point of municipal engineering quality control. Under the repeated action of vehicle load, the road surface of the urban road inspection well is damaged to different degrees in relation to the inspection well, such as sinking of the inspection well cover, cracking, breakage and the like of the asphalt layer around the inspection well, frequent maintenance is required, labor and civil injury are wasted, and urban traffic order is influenced.
Aiming at the traditional municipal manhole construction process, application number 201710846639.5, chinese patent entitled reinforced structure of heavy manhole cover and construction method thereof of municipal road, discloses a manhole reinforcement process for prefabricating a manhole cover at the top of a shaft, wherein the shaft is of a traditional bricked structure, and the durability of the shaft is poor; the contact surface of the large-scale foot of the prefabricated well ring and the concrete is an inclined plane, the large-scale foot and the concrete are easy to generate relative displacement, and meanwhile, the concrete is cracked to generate cracks; backfilling the periphery of a shaft in the roadbed range by graded sand, wherein the plate body of the graded sand is inferior to that of cement stabilized granules; in addition, the low-density polyethylene foam board belongs to a flexible structure, the inspection well structure can generate vertical strain after the pavement receives the load of the vehicle, and the asphalt surface layer can generate fatigue damage and then generate cracks after a long time, so that the durability of the structure is affected; the chinese patent with application No. 201720144293.X, entitled "reinforced manhole", discloses a process for casting plain concrete around a shaft to reinforce the manhole, wherein the plain concrete is cast at one time, and the normal spreading of a base layer is affected. In addition, the plain concrete bottom is positioned on the soil roadbed, and after long-time impact of vehicle load, partial sedimentation can occur, so that the defects of pavement damage and the like are generated.
Disclosure of Invention
The invention provides a novel municipal inspection well structure and a construction method for solving the defects in the prior art.
The invention is realized by the following technical scheme:
The novel municipal inspection well structure comprises a plurality of prefabricated shafts, wherein the prefabricated shafts are assembled in sequence through a step structure; the periphery of the prefabricated shaft is provided with a base layer reinforcing layer, the base layer reinforcing layer is positioned below the road base layer, the top end of the prefabricated shaft is provided with a prefabricated holding force well ring, and the holding force well ring is upwards connected with a well lid through an expansion bolt; the force-holding well ring is divided into a convex part and an outward expansion part, and the upper end surface of the outward expansion part of the force-holding well ring is flush with the top mark height of the road base; the geogrid is paved above the road base layer outside the prefabricated shaft, the geogrid is paved at the bottom of the protruding part of the holding force well ring, the road surface layer is paved above the geogrid, color steel fiber concrete is paved around the well cover, the elevation and the color of the color steel fiber concrete are consistent with those of the upper surface layer of the road surface layer, and the distance of the color steel fiber concrete paved outside is smaller than the distance of the holding force well ring outside.
Preferably, the prefabricated well bore is prefabricated from concrete.
Preferably, the thickness of the prefabricated shaft is 25cm, and the prefabricated shaft is made of concrete with the label not lower than C25. Further, the outer diameter of the base reinforcing layer is 0.8-2.0m larger than the outer diameter of the prefabricated shaft.
Preferably, the geogrid is a polypropylene double-pull plastic grid.
Preferably, the force-holding well ring is of a reinforced concrete structure, and the outer diameter of the force-holding well ring is 2.2-3.2m.
Preferably, the expansion bolts are M20 expansion bolts.
Preferably, the color steel fiber concrete grade is not lower than C30.
The invention discloses a novel municipal inspection well structure construction method, which comprises the following steps:
Firstly, manufacturing a prefabricated shaft and a holding force well ring; manufacturing a prefabricated shaft, wherein the prefabricated shaft is divided into a plurality of sections, and each section is assembled in sequence through a step structure; the prefabricated force-holding well ring is of a reinforced concrete structure and is divided into a convex part and an outward expansion part, the height of the upper end face of the convex part is equal to the top mark height of the lower layer of the road surface layer, the height of the upper end face of the outward expansion part is equal to the top mark height of the road base layer, and expansion bolts are reserved in the convex part of the force-holding well ring.
And secondly, firstly installing the prefabricated shaft in the inspection well until the prefabricated shaft is flush with the top standard height of the roadbed, temporarily covering the wellhead of the inspection well by adopting a steel plate, performing rolling construction on the roadbed, then reversely digging downwards the roadbed around the prefabricated shaft, backfilling after reversely digging, and enabling the backfilling material to be the same as that of the roadbed.
Removing the temporarily covered steel plate after the construction of the base reinforcing layer is completed, then continuously installing a prefabricated shaft upwards in the inspection well, wherein the installed prefabricated shaft is flush with the top elevation of the subbase layer of the road base, temporarily covering the wellhead by adopting the steel plate, and then paving and rolling the subbase layer of the road base to finish the construction of the subbase layer of the road base; removing the temporarily covered steel plate, then continuously installing the prefabricated shaft upwards to enable the prefabricated shaft to be flush with the top mark height of the lower base layer of the road base, temporarily covering the wellhead by adopting the steel plate, and then paving and rolling the lower base layer of the road base to finish the construction of the lower base layer of the road base; after the construction of the lower base layer of the road base layer is finished, the paving and rolling of the base layer on the road base layer are carried out, the construction of the upper base layer of the road base layer is completed, and the construction of the road base layer is completed.
And fourthly, breaking the base layer on the road base layer around the inspection well, taking out the steel plate, installing the holding force well ring, paving the geogrid to the bottom of the convex part of the holding force well ring, paving the road surface layer, installing the well cover, and fixing the well cover and the holding force well ring together through expansion bolts.
And fifthly, breaking the road surface layer in the periphery of the well cover, and pouring color steel fiber concrete, wherein the colors of the color steel fiber concrete and the upper surface layer of the road surface layer are consistent.
Preferably, in the step (four), the installation elevation is adjusted by setting a steel backing plate at the position of the expansion bolt when the manhole cover is installed.
The beneficial effects of the invention are as follows:
1. And the base reinforcing layer is arranged at the bottom of the road base and around the prefabricated shaft, so that the strength around the inspection well and the bearing capacity and durability of the inspection well are improved.
2. The arrangement of the prefabricated shaft can improve the construction efficiency and quality and improve the strength of the shaft.
3. The arrangement of the holding force well ring can enlarge the holding force area of the inspection well, and has the effect of improving the structural bearing capacity and durability.
4. The color steel fiber concrete realizes the unification of the color around the well lid and the color of the pavement structure, and has good appearance.
5. Due to the arrangement of the geogrid, the integrity of the peripheral structure of the well cover is improved, and reflection cracks are prevented.
6. The setting of steel backing plate plays the effect of finely adjusting the well lid installation elevation, ensures the accuracy of installation elevation.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic illustration of the construction of a prefabricated wellbore of the present invention.
In the figure, 1 prefabricated shaft, 2 basic unit enhancement layer, 3 road bed, 4 road basic unit, 5 road surface course, 6 protruding portion, 7 holding force wreath, 8 color steel fiber concrete, 9 well lid, 10 expansion bolts, 11 geogrid.
Detailed Description
The following specific embodiments of the present application are provided, and it should be noted that the present application is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical scheme of the present application fall within the protection scope of the present application.
The novel municipal inspection well structure comprises a plurality of prefabricated shafts 1, and the prefabricated shafts 1 are assembled in sequence through a step structure. The prefabricated pit shaft 1 is equipped with basic unit enhancement layer 2 all around, and basic unit enhancement layer 2 is located road base layer 4 below. The top end of the prefabricated shaft 1 is provided with a prefabricated holding force well ring 7, and the holding force well ring 7 is connected with a well cover 9 upwards through an expansion bolt 10. The holding force wreath 7 is divided into a bulge part 6 and an outward expansion part, and the upper end surface of the outward expansion part of the holding force wreath 7 is flush with the top mark height of the road base layer 4. The geogrid 11 is paved above the road base layer 4 outside the prefabricated shaft 1, the geogrid 11 is paved at the bottom of the protruding part 6 of the holding force well ring 7, the road surface layer 5 is paved above the geogrid 11, the color steel fiber concrete 8 is paved around the well cover 9, the elevation and the color of the color steel fiber concrete 8 are consistent with those of the upper surface layer of the road surface layer 5, and the distance of the color steel fiber concrete 8 paved outside is smaller than the distance of the holding force well ring 7.
The invention also comprises a construction method of the inspection well structure, and the concrete construction method of the inspection well structure is described below by taking an inspection well with the inner diameter of 700mm and a 48 cm-thick 4% water stable base layer (comprising a subbase layer, a lower base layer and an upper base layer) as an example, and comprises the following steps:
Firstly, prefabricating a shaft 1 and a holding force well ring 7; firstly, a prefabricated shaft 1 is manufactured in a prefabricated field, the prefabricated shaft 1 is 25cm thick and is manufactured by adopting C25 concrete, the prefabricated shaft 1 is divided into a plurality of sections, each section is assembled in sequence through a step structure, the step structure is shown in figure 2, and the prefabricated shafts 1 are clamped together through mutually corresponding step structures. The arrangement of the prefabricated shaft 1 can improve the construction efficiency and quality of the inspection well and the strength of the inspection well. The force-holding well ring 7 is prefabricated by reinforced concrete, the outer diameter of the prefabricated force-holding well ring 7 is 2.2m, the inner diameter is consistent with the inner diameter of the prefabricated shaft 1, the inner diameter is 0.7m, the force-holding well ring 7 is divided into a convex part 6 and an outward expansion part, the height of the upper end face of the convex part 6 is equal to the top mark height of the lower surface layer of the road surface layer 5, and the height of the upper end face of the outward expansion part is equal to the top mark height of the road base layer 4. M20 expansion bolts 10 are reserved in the bulge part 6 of the holding force well ring 7, the number of the expansion bolts 10 is 4, and the embedding depth of the expansion bolts 10 is not less than 140mm.
Firstly, installing a prefabricated pit shaft 1 in an inspection well until the prefabricated pit shaft is flush with the top standard height of a roadbed 3, temporarily covering a wellhead by adopting a steel plate, then carrying out rolling construction on the roadbed 3, carrying out downward reverse excavation for 40cm on the roadbed 3 within the range of 1m outwards of the prefabricated pit shaft 1, backfilling after reverse excavation, wherein the backfilling material is the same as that of a road base layer 4, preferably backfilling and tamping by using 4% cement stabilized macadam, and backfilling is carried out in two layers. The base layer reinforcing layer 2 is arranged around the inspection well, so that the strength, the bearing capacity and the durability around the inspection well are effectively improved.
Removing the temporarily covered steel plate after the construction of the base reinforcing layer 2 is completed, then continuously installing the prefabricated shaft 1 upwards in the inspection well, enabling the installed prefabricated shaft 1 to be flush with the top elevation of the base layer of the road base layer 4, temporarily covering the wellhead by adopting the steel plate, and then paving and rolling the base layer of the road base layer 4 to finish the construction of the base layer of the road base layer 4; after the construction of the subbase of the road base 4 is completed, removing the temporarily covered steel plate, and then continuously installing the prefabricated shaft 1 upwards to enable the prefabricated shaft 1 to be flush with the top standard height of the lower subbase of the road base 4, temporarily covering the wellhead by adopting the steel plate, and then paving and rolling the lower subbase of the road base 4 to complete the construction of the lower subbase of the road base 4; after the construction of the lower base layer of the road base layer 4 is completed, then the paving of the upper base layer of the road base layer 4 is carried out, and rolling is carried out after the paving, so that the construction of the upper base layer of the road base layer 4 is completed, and the construction of the road base layer 4 is completed.
And fourthly, breaking the base layer on the road base layer 4 within the range of 50cm around the inspection well, breaking the base layer to 16cm in thickness, taking out the temporarily covered steel plate, then installing the holding force well ring 7, paving the geogrid 11 to the bottom of the bulge part 6 of the holding force well ring 7, namely, paving the geogrid 11 on the bulge part 6, wherein the geogrid 11 adopts a polypropylene double-pull plastic grid. The geogrid 11 has the effect of improving the structural integrity of the periphery of the well cover 9, and reflection cracks are prevented from occurring. Then paving the road surface layer 5, installing the well cover 9, and fixing the well cover 9 and the holding well ring 7 together through expansion bolts 10. The installation elevation can be adjusted through the mode that sets up the steel backing plate in the expansion bolts 10 position when well lid 9 is installed, plays the effect of finely tuning well lid 9 installation elevation, ensures the accuracy of installation elevation.
And fifthly, after the steps, the road surface layer 5 within the range of 50cm around the well cover 9 is broken, and the color steel fiber concrete 8 is poured, preferably, the number of the color steel fiber concrete 8 is not lower than C30, and the colors of the color steel fiber concrete 8 and the upper surface layer of the road surface layer 5 are consistent. The color steel fiber concrete 8 realizes that the color around the well cover 9 is consistent with the color of the pavement structure, and has good appearance.
The above embodiment is only one of the preferred embodiments of the present invention, and the ordinary changes and substitutions made by those skilled in the art within the scope of the present invention should be included in the scope of the present invention.
Claims (9)
1. A municipal inspection shaft structure construction method is characterized in that: the municipal inspection well structure comprises a plurality of prefabricated shafts (1), wherein the prefabricated shafts (1) are assembled in sequence through step structures; the periphery of the prefabricated shaft (1) is provided with a base layer reinforcing layer (2), the base layer reinforcing layer (2) is positioned below the road base layer (4), the top end of the prefabricated shaft (1) is provided with a prefabricated holding force well ring (7), and the holding force well ring (7) is upwards connected with a well cover (9) through expansion bolts (10); the force-holding well ring (7) is divided into a protruding part (6) and an outward expansion part, and the upper end surface of the outward expansion part of the force-holding well ring (7) is flush with the top mark height of the road base layer (4); a geogrid (11) is paved above the road base layer (4) which is outwards from the prefabricated shaft (1), the geogrid (11) is paved at the bottom of the protruding part (6) of the holding force well ring (7), a road surface layer (5) is paved above the geogrid (11), color steel fiber concrete (8) is paved around the well cover (9), the elevation and the color of the color steel fiber concrete (8) are consistent with those of the upper surface layer of the road surface layer (5), and the outwards paved distance of the color steel fiber concrete (8) is smaller than the outwards distance of the holding force well ring (7);
the municipal inspection well structure construction method is completed based on the municipal inspection well structure and comprises the following steps:
Firstly, manufacturing a prefabricated shaft (1) and a holding force well ring (7); manufacturing a prefabricated shaft (1), wherein the prefabricated shaft (1) is divided into a plurality of sections, and each section is assembled in sequence through a step structure; the prefabricated force-holding well ring (7), wherein the prefabricated force-holding well ring (7) is divided into a protruding part (6) and an outward expansion part, the height of the upper end surface of the protruding part (6) is equal to the top standard height of the lower layer of the road surface layer (5), the height of the upper end surface of the outward expansion part is equal to the top standard height of the road base layer (4), and an expansion bolt (10) is reserved in the protruding part (6) of the force-holding well ring (7);
Firstly installing a prefabricated shaft (1) in an inspection well until the prefabricated shaft is flush with the top standard height of a roadbed (3), temporarily covering the wellhead of the inspection well by adopting a steel plate, performing rolling construction on the roadbed (3), then performing downward reverse excavation on the roadbed (3) around the prefabricated shaft (1), and backfilling after reverse excavation, wherein the backfilling material is the same as that of a roadbed layer (4);
Removing the temporarily covered steel plate after the construction of the base reinforcing layer (2) is completed, then continuously installing the prefabricated shaft (1) upwards in the inspection well, enabling the installed prefabricated shaft (1) to be flush with the top standard height of the base layer of the road base layer (4), temporarily covering the wellhead by adopting the steel plate, and then paving and rolling the base layer of the road base layer (4) to finish the construction of the base layer of the road base layer (4); removing the temporarily covered steel plate, then continuously installing the prefabricated shaft (1) upwards to enable the prefabricated shaft (1) to be flush with the top mark height of the lower base layer of the road base layer (4), temporarily covering the wellhead by the steel plate, then paving and rolling the lower base layer of the road base layer (4), and completing construction of the lower base layer of the road base layer (4); after the construction of the lower base layer of the road base layer (4) is finished, paving and rolling the upper base layer of the road base layer (4) to finish the construction of the upper base layer of the road base layer (4), so that the construction of the road base layer (4) is finished;
fourthly, breaking the base layer on the road base layer (4) around the inspection well, taking out the steel plate, installing the holding force well ring (7), paving the geogrid (11) to the bottom of the protruding part (6) of the holding force well ring (7), paving the road surface layer (5), installing the well cover (9), and fixing the well cover (9) and the holding force well ring (7) together through the expansion bolts (10);
And fifthly, breaking the road surface layer (5) in the peripheral range of the well cover (9), and pouring color steel fiber concrete (8), wherein the colors of the color steel fiber concrete (8) and the upper surface layer of the road surface layer (5) are consistent.
2. The municipal inspection shaft structure construction method according to claim 1, wherein: the prefabricated shaft (1) is prefabricated by concrete.
3. The municipal inspection shaft structure construction method according to claim 2, wherein: the thickness of the prefabricated shaft (1) is 25cm, and the prefabricated shaft is made of concrete with the mark no lower than C25.
4. The municipal inspection shaft structure construction method according to claim 1, wherein: the outer diameter of the base reinforcing layer (2) is 0.8-2.0m larger than that of the prefabricated shaft (1).
5. The municipal inspection shaft structure construction method according to claim 1, wherein: the geogrid (11) is a polypropylene double-pull plastic grid.
6. The municipal inspection shaft structure construction method according to claim 1, wherein: the holding force well ring (7) is of a reinforced concrete structure, and the outer diameter is 2.2-3.2m.
7. The municipal inspection shaft structure construction method according to claim 1, wherein: the expansion bolt (10) is an M20 expansion bolt.
8. The municipal inspection shaft structure construction method according to claim 1, wherein: the color steel fiber concrete (8) is not lower than C30.
9. The municipal inspection shaft structure construction method according to claim 1, wherein: in the step (IV), the installation elevation is adjusted by arranging a steel backing plate at the position of the expansion bolt (10) when the well cover (9) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910280271.XA CN109972659B (en) | 2019-04-09 | 2019-04-09 | Novel municipal inspection well structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910280271.XA CN109972659B (en) | 2019-04-09 | 2019-04-09 | Novel municipal inspection well structure and construction method |
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| CN109972659A CN109972659A (en) | 2019-07-05 |
| CN109972659B true CN109972659B (en) | 2024-05-03 |
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| CN114809238A (en) * | 2022-04-27 | 2022-07-29 | 扬州市建筑设计研究院有限公司 | Municipal road inspection well and construction method thereof |
| CN114855878A (en) * | 2022-06-15 | 2022-08-05 | 中建二局第二建筑工程有限公司 | Sewage disposal well and construction method thereof |
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