CN114809238A - Municipal road inspection well and construction method thereof - Google Patents
Municipal road inspection well and construction method thereof Download PDFInfo
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- CN114809238A CN114809238A CN202210448780.0A CN202210448780A CN114809238A CN 114809238 A CN114809238 A CN 114809238A CN 202210448780 A CN202210448780 A CN 202210448780A CN 114809238 A CN114809238 A CN 114809238A
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- 238000007689 inspection Methods 0.000 title claims abstract description 57
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000010410 layer Substances 0.000 claims abstract description 175
- 239000000835 fiber Substances 0.000 claims abstract description 32
- 239000002689 soil Substances 0.000 claims abstract description 26
- 239000004744 fabric Substances 0.000 claims abstract description 25
- 239000002344 surface layer Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims description 51
- 239000010426 asphalt Substances 0.000 claims description 33
- 239000004567 concrete Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 239000004568 cement Substances 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000011150 reinforced concrete Substances 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000002956 ash Substances 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 6
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- 239000010881 fly ash Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
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- 230000003487 anti-permeability effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
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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
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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
- E02D29/125—Manhole shafts; Other inspection or access chambers; Accessories therefor characterised by the lining of the shaft
Abstract
The application relates to a municipal road inspection well and a construction method thereof, relating to the field of municipal road construction and comprising a road soil layer and a well body arranged in the road soil layer; the well body comprises a well body, a well seat and a well lid, the well seat is arranged at the top end of the well body, and the well lid is arranged at one end, far away from the well body, of the well seat; the road soil layer comprises a base layer and a surface layer positioned on the top of the base layer; the base layer is arranged on the periphery of the well body, and the surface layer is arranged on the periphery of the well seat; and a first layer of anti-seepage grid fiber cloth is arranged at the junction of the surface layer and the base layer and along the periphery of the well body. The problem of inspection shaft basis early subsides is solved in this application, reduces the settlement volume of inspection shaft for the damaged condition of fracture is difficult for appearing in the peripheral road surface of inspection shaft.
Description
Technical Field
The application relates to the field of municipal road construction, in particular to a municipal road inspection well and a construction method thereof.
Background
The municipal road inspection well is a vertical well for inspecting and clearing sludge in an underdrain in drainage engineering. Road surface water that urban road inlet for stom water was gathered leads to the inspection shaft through the connecting pipe, and drainage main pipe is arranged in through the inspection shaft again. The cracking and damage of the road surface around the road manhole cover and the sinking of the manhole cover are common road quality common defects at present, and the driving comfort and the driving safety are directly influenced. In this regard, the quality problem of the inspection well is often improved by enhancing the strength and crack resistance of concrete near the manhole cover or the strength and quality of the inspection well itself.
In view of the above-mentioned related technologies, the inventor believes that the crack water pressure generated after the foundation of the inspection well is early settled and deformed accelerates the settlement of the inspection well, and then the pavement around the inspection well is collapsed and the local surface layer is damaged due to the fact that the pavement is from bottom to top, so that the problems of settlement of the inspection well and the crack of the pavement around the inspection well are difficult to be effectively improved only by enhancing the strength and the crack resistance of the concrete near the surface layer and the well cover or the strength and the quality of the inspection well.
Disclosure of Invention
In order to improve the problems, the application provides a municipal road inspection well and a construction method thereof.
The application provides a town road inspection shaft adopts following technical scheme:
a municipal road inspection well comprises a road soil layer and a well body arranged in the road soil layer; the well body comprises a well body, a well seat and a well lid, the well seat is arranged at the top end of the well body, and the well lid is arranged at one end, far away from the well body, of the well seat; the road soil layer comprises a base layer and a surface layer positioned on the top of the base layer; the base layer is arranged on the periphery of the well body, and the surface layer is arranged on the periphery of the well seat; and a first layer of anti-seepage grid fiber cloth is arranged at the junction of the surface layer and the base layer and along the periphery of the well body.
By adopting the technical scheme, the possibility that the road surface runoff infiltrates below the base layer outside the inspection well is reduced, the water content of the bearing soil layer at the junction of the well body and the base layer is maintained in an unsaturated state, the phenomenon that the gap water pressure generated by the pores at the junction is greater than the limit value of the dynamic water pressure of the soil body is avoided, a good geological condition is provided for bearing an upper load on the foundation where the inspection well is located, and the problems of settlement and pavement cracking at the peripheral side are avoided.
Preferably, the surface course includes first pitch mixture layer and second pitch mixture layer, the second pitch mixture layer is located the one side that basic unit was kept away from to first pitch mixture layer, first pitch mixture layer and second pitch mixture layer juncture, and along well seat week along laying second floor seepage prevention grid fiber cloth.
Through adopting above-mentioned technical scheme, the impervious performance of inspection shaft week along road surface mixture surface course is further improved in setting up of second floor prevention of seepage grid fiber cloth, improves the structural stability of surface course to and hold the power effect to the road surface load.
Preferably, a reinforced concrete layer is arranged on the periphery of the well seat, the reinforced concrete layer is located between the well seat and the first asphalt mixture layer, and the reinforced concrete layer is made of cast-in-place steel fiber volcanic ash concrete.
By adopting the technical scheme, the compactness of the concrete layer on the periphery of the well seat is enhanced, a waterproof and moistureproof layer is formed, and the possibility of seepage erosion of runoff is reduced.
Preferably, a first anti-settling tie bar is embedded at one end of the well body close to the well seat, and the first anti-settling tie bar is arranged along the driving direction.
Through adopting above-mentioned technical scheme, first prevent subsiding the drawknot muscle when the vertical displacement of restraint well body, with road bed and inspection shaft effective connection formation common force, resist road surface load and vibration effect.
Preferably, a second anti-settling tie bar is embedded in the base layer, the second anti-settling tie bar corresponds to the first anti-settling tie bar, and the second anti-settling tie bar is fixedly connected with the corresponding first anti-settling tie bar.
By adopting the technical scheme, the second anti-settling tie bar can enhance the connection stability and integrity of the well body and the surrounding base layer; under the combined action with first anti-settlement lacing wire, can effectively reduce the stress vibration of inspection shaft that the road surface load vibration in turn arouses, further improve the anti-settlement performance of this inspection shaft.
Preferably, the second anti-settling tie bar is arranged in a broken line shape or an S shape.
Through adopting above-mentioned technical scheme, effectively reduce the horizontal tensile stress that the second prevents subsiding the drawknot muscle tip concrete and receive for the concrete of tip is difficult for taking place the damage.
Preferably, an annular steel wire ring is embedded in one end, close to the well seat, of the well body.
Through adopting above-mentioned technical scheme, improve the structural strength and the tensile strength of well bore tip, effectively reduce first settlement prevention drawknot muscle and arrange the possibility that the department appears crack or other deformation destruction.
Preferably, the base layer comprises a cement water stable base layer and a lime-lime gravel subbase layer, and the cement water stable base layer is positioned at the top of the lime-gravel subbase layer.
By adopting the technical scheme, the soil texture condition of the lower holding layer is ensured to be consistent, and the possibility of side-sliding settlement of the inspection well is reduced.
The construction method of the municipal road inspection well adopts the following technical scheme:
s1, measuring and lofting, excavating and cleaning a foundation pit, and burying a municipal pipeline;
s2, pouring, maintaining and forming or prefabricating and assembling the well foundation; rolling, consolidating and hardening the lime-fly-ash gravel subbase layer;
s3, binding the first anti-settling tie bar and the annular steel wire ring at the top of the well body, and pouring, molding and maintaining; performing well seat pouring molding maintenance or prefabricated assembly on the top end of the well body;
s4, welding one end of the second anti-settling tie bar with the corresponding first anti-settling tie bar, and binding and fixing the other end of the second anti-settling tie bar on the cement water stabilized base layer area to be cast in situ;
s5, pouring, forming and maintaining the cement-water stabilized base layer; pouring and maintaining a foundation concrete layer on the periphery of the top of the well body;
s6, paving a first layer of anti-seepage grid fiber cloth on the upper surface of the cement stabilized base layer and along the periphery of the well seat; and the paving work of the first asphalt mixture layer is started;
s7, casting steel fiber volcanic ash cement fine stone concrete on the periphery of the well seat and between the first asphalt mixture layer and the well seat to form a reinforced concrete layer;
s8, covering and sewing the top of the first asphalt mixture layer, and paving a second layer of anti-seepage grid fiber cloth; and after the well cover is installed, integrally paving the second asphalt mixture layer.
Preferably, the second asphalt mixture layer is fully paved across the seam, and an asphalt suspension compact type graded mixture is adopted.
Through adopting above-mentioned technical scheme, the second pitch mixture bed adopts the closely knit type gradation mixture of pitch suspension to stride the seam and cover fully, not only can ooze down and play certain effect of stopping, and can effectively reduce the second pitch mixture bed to the action of gravity on well body upper portion, reduce the fracture possibility of well body week side top surface course.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the method, the early settlement problem of the foundation of the inspection well is solved by enhancing the whole anti-permeability performance of the periphery of the well body and arranging structural lacing wires on the structure, the settlement of the inspection well is reduced, and the condition that the pavement around the inspection well is not easy to crack and damage is avoided;
2. by arranging the anti-seepage assembly, the possibility that the road surface runoff is infiltrated below a base layer outside the inspection well is reduced, the water content of a holding soil layer at the junction of the well body and the base layer is maintained in an unsaturated state, the gap water pressure generated by pores at the junction is prevented from being greater than the limit value of the dynamic water pressure of a soil body, and good geological conditions are provided for the foundation of the inspection well to bear upper load; the anti-permeability performance of the mixture surface layer of the road surface on the peripheral edge of the inspection well, the structural stability of the surface layer and the holding force effect on road surface load are improved;
3. through setting up first anti-settling drawknot muscle and second and preventing settling drawknot muscle, reinforcing well body and the stability of being connected and the wholeness of basic unit on every side reduce the inspection shaft that road surface load vibration in turn causes and coerce the vibration, further improve the anti-settling performance of inspection shaft.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a town road manhole according to an embodiment of the application.
FIG. 2 is a cross-sectional view of a town road manhole in accordance with an embodiment of the present application.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Description of reference numerals: 1. a base layer; 11. a lime-fly-ash gravel sub-base layer; 12. the cement water stabilized base layer; 2. a surface layer; 21. a first asphalt mixture layer; 22. a second asphalt mixture layer; 3. a base concrete layer; 4. reinforcing the concrete layer; 5. well bore; 51. a first anti-settling lacing wire; 52. a second anti-settling tie bar; 53. a ring-shaped steel wire ring; 6. a well base; 61. a well ring supporting seat; 611. positioning the ring table; 62. a well ring; 621. a positioning ring groove; 7. a well cover; 8. an impermeable component; 81. a first layer of impermeable grid fiber cloth; 82. and the second layer of impermeable grid fiber cloth.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses town road inspection shaft. Referring to fig. 1 and 2, a town road manhole includes a road soil layer and a well body vertically installed in the road soil layer. The well body is including well body 5, well seat 6 and well lid 7, and well seat 6 pours the top of being fixed in well body 5, and well lid 7 is installed in the tip that well seat 6 kept away from. The road soil layer includes basic unit 1 and paves in surface course 2 at basic unit 1 top, and wherein, basic unit 1 is located well 5 week layers, and surface course 2 is located 6 week sides of well seat.
Referring to fig. 1 and 2, the base course 1 includes a cement water stabilized base course 12 and a lime crushed stone sub-base course 11. In the embodiment, the cement stabilized base layer 12 adopts a skeleton compact type; wherein the crushed stone has a single particle size of no more than 31.5mm, and the cement is pozzolanic portland cement. The cement water stable base layer 12 belongs to a semi-rigid base layer, has good integrity, mechanical strength, water stability and frost resistance, has higher initial strength, and is enhanced along with the increase of age. The two-ash gravel subbase 11 is also a semi-rigid base layer 1, and is strong in hardening performance, large in overall rigidity, good in water stability and frost resistance, and the arrangement of the two-ash gravel subbase 11 can ensure that the soil texture conditions of a lower holding layer are consistent, so that the possibility of side-slipping settlement and uneven settlement of the inspection well is reduced.
Referring to fig. 1 and 2, the surface course 2 includes a first asphalt mixture layer 21 and a second asphalt mixture layer 22, and the second asphalt mixture layer 22 is spread on the surface of the first asphalt mixture layer 21 away from the base course 1. The second asphalt mixture layer 22 adopts asphalt suspension compact type graded mixture, the residual porosity of the asphalt suspension compact type graded mixture after compaction is less than 6%, runoff infiltration can be prevented, the gravity effect on the upper part of the well body can be effectively reduced, and the possibility of cracking of the top surface layer 2 on the peripheral side of the well body is reduced.
Referring to fig. 1 and 2, a foundation concrete layer 3 is poured on the periphery of the top end of the well bore 5, the foundation concrete layer 3 is located between the cement stabilized base layer 12 and the well bore 5, and in the embodiment, the foundation concrete layer 3 is formed by pouring C10 concrete. A reinforced concrete layer 4 is poured on the top of the basic concrete layer 3, and the reinforced concrete layer 4 is positioned between the well seat 6 and the first asphalt mixture layer 21; the reinforced concrete layer 4 is formed by pouring cast-in-place steel fiber volcanic ash concrete, the compactness and the strength of the concrete layer on the periphery of the well seat 6 can be effectively enhanced by the reinforced concrete layer 4, a waterproof and moistureproof layer is formed, and the possibility of runoff infiltration erosion is reduced.
Referring to fig. 1 and 2, as the road surface runoff infiltrates into the road surface gaps outside the whole body of the inspection well, the water content of the local soil body of the roadbed bearing layer at the junction is increased to be saturated, and under the action of the dynamic water pressure formed by road surface load, the phenomena of sand flowing or undermining can be generated, so that the sedimentation of the well body of the inspection well and the foundation layer below the well body is accelerated; in order to effectively improve the above problem, an impermeable assembly 8 is provided in the road soil layer.
Referring to fig. 2 and 3, the barrier assembly 8 comprises a first layer of barrier grid fiber cloth 81 and a second layer of barrier grid fiber cloth 82. The first layer of anti-seepage grid fiber cloth 81 is laid at the junction of the base layer 1 and the surface layer 2, the first layer of anti-seepage grid fiber cloth 81 is laid along the circumferential direction of the well seat 6, the inner side edge of the first layer of anti-seepage grid fiber cloth 81 horizontally extends to the junction of the base concrete layer 3 and the reinforced concrete layer 4, and the first layer of anti-seepage grid fiber cloth is abutted to the outer circumferential wall of the well seat 6. The first layer of anti-seepage grid fiber cloth 81 can reduce the possibility that the road surface runoff infiltrates below the base layer 1 outside the inspection well, so that the water content of a bearing soil layer at the junction of the well body 5 and the base layer 1 is maintained in an unsaturated state, the phenomenon that the gap water pressure generated by the pores at the junction is greater than the limit value of the soil body hydrodynamic pressure is avoided, and a good geological condition is provided for the foundation of the inspection well to bear the upper load.
Referring to fig. 2 and 3, the second layer of impermeable grid fiber cloth 82 is laid at the junction of the first asphalt mixture layer 21 and the second asphalt mixture layer 22, and the inner side edge of the second layer of impermeable grid fiber cloth 82 extends horizontally to the upper surface of the reinforced concrete layer 4, so that the impermeability of the surface layer 2 around the inspection well is further improved, the structural stability of the surface layer 2 is improved, and the holding force effect on the road surface load is improved.
Referring to fig. 2 and 3, the stress vibration of the manhole due to the road surface load effect and the elastic vibration of the road surface is one of the main causes of early settlement of the manhole. Therefore, the first anti-settling tie bar 51 is embedded, tied and fixed at one end, close to the well seat 6, of the well body 5, the first anti-settling tie bar 51 is arranged along the traveling direction, and one end, far away from the well body 5, of the first anti-settling tie bar 51 horizontally penetrates through the foundation concrete layer 3. The first anti-settlement tie bar 51 effectively connects the inspection well body with the road soil layer on the periphery of the well body to form a common force while restraining the vertical displacement of the well body, so that the pavement load and the vibration effect are resisted. And the first anti-settling drawknot rib 51 is buried in one end of the well body 5 to form a bending section, so that the connection strength and stability between the first anti-settling drawknot rib 51 and the well body 5 are improved, and the local horizontal tensile stress on the end part of the well body 5 is reduced.
Referring to fig. 2 and 3, a second anti-settling drawknot rib 52 is embedded in the base layer 1, the second anti-settling drawknot rib 52 corresponds to the first anti-settling drawknot rib 51, and the second anti-settling drawknot rib 52 is welded and fixed with the corresponding first anti-settling drawknot rib 51. The second prevents subsiding the drawknot muscle 52 and effectively strengthens well 5 and the stability of being connected and the wholeness of basic unit 1 on every side, with first prevent subsiding under the drawknot muscle 51 combined action, effectively reduces the inspection shaft that road surface load vibration in turn causes and threatens the vibration, further improves the anti-subsiding performance of inspection shaft. The second prevents subsiding the drawknot muscle 52 and is the broken line type or "S" type setting on self length direction, and in this embodiment, the second prevents subsiding the drawknot muscle 52 and is the broken line type setting to reduce the second and prevent subsiding the condition emergence that the great horizontal tensile stress appears in the tip concrete of drawknot muscle 52 and lead to the concrete destruction.
Referring to fig. 2 and 3, a ring-shaped steel wire ring 53 is embedded and tied in one end of the well body 5 close to the well seat 6, the ring-shaped steel wire ring 53 is connected with the first anti-settling tie bar 51, the structural strength and the tensile strength of the end portion of the well body 5 are improved, and the position, close to the first anti-settling tie bar 51, of the well body 5 is not prone to cracking or deformation damage.
Referring to fig. 2 and 3, the well base 6 comprises a well ring support base 61 and a well ring 62, wherein the well ring support base 61 can be concrete, rubber or emulsified asphalt concrete; the collar 62 may be of iron or concrete. In this embodiment, the manhole cover supporting seat 61 and the manhole cover 62 are both made of concrete. The well curb supporting seat 61 is installed in the top of well 5, and integrated into one piece has the position ring platform 611 on the well curb supporting seat 61, and the position ring groove 621 with position ring platform 611 looks adaptation is seted up to the bottom of well curb 62, and the well curb 62 is installed in the top of well curb supporting seat 61, and in the position ring platform 611 inserted and establish and position ring groove 621, improve well seat 6 construction accuracy and quality to improve the connection steadiness between well curb 62 and the well curb supporting seat 61.
Referring to fig. 2 and 3, one end of the manhole ring 62 far away from the manhole body 5 is formed with a step portion for installing the manhole cover 7, the manhole cover 7 is placed on the manhole ring 62 through the step portion, and the upper surface of the manhole cover 7 is flush with the upper surface of the surface layer 2. It should be noted that, if the manhole ring supporting seat 61 is made of rubber or emulsified asphalt concrete, the upper surface of the manhole cover 7 is 5-10mm higher than the upper surface of the surface layer 2, so that the vehicle is in a climbing state when passing through a time-varying wheel falling state, and the driving comfort is improved.
The implementation principle of this application embodiment town road inspection shaft does: the first layer of anti-seepage grid fiber cloth 81 and the second layer of anti-seepage grid fiber cloth 82 are arranged, so that the possibility that the runoff of the pavement seeps below the base layer 1 outside the inspection well can be reduced, the water content of a holding soil layer at the junction of the well body 5 and the base layer is maintained in an unsaturated state, the gap water pressure generated by the pores at the junction is prevented from being larger than the limit value of the dynamic water pressure of the soil body, and a good geological condition is provided for the foundation of the inspection well to bear the upper load; the anti-permeability performance of the road surface mixture surface layer 2 on the periphery of the inspection well, the structural stability of the surface layer 2 and the holding force effect on road surface load are improved. The second anti-settling tie bars 52 and the second anti-settling tie bars 52 effectively enhance the connection stability and integrity of the well body 5 and the surrounding base layer 1, reduce the inspection well stress vibration caused by the alternate load vibration of the road surface, and further improve the anti-settling performance of the inspection well.
The embodiment of the application discloses a construction method of a municipal road inspection well. Referring to fig. 2 and 3, a town road manhole construction method includes the steps of:
and S1, measuring and lofting, excavating and cleaning a foundation pit, replacing and prepressing the poor soil around the pit, and burying a municipal pipeline.
S2, pouring, maintaining and forming a well 5 foundation; and then, binding a first anti-settling tie bar 51 and a ring-shaped steel wire ring 53 at the top of the well body 5, integrally casting and molding the top of the well body 5, checking the elevation positioning of the well body 5 of the inspection well, and integrally maintaining the top of the well body 5. Before the top of the well body 5 is poured and formed, the construction end face of the well body 5 foundation is roughened, floating stones, concrete residues and the like of the construction end face are removed, then the construction end face is washed and wetted by water, cement mortar with the same strength of 10-15mm is paved on the construction end face, and then the top of the well body 5 is poured to ensure the bonding strength between new concrete and old concrete of the well body 5.
S3, pouring, molding and maintaining the well base 6 at the top end of the well body 5, and rolling, consolidating and hardening the lime-fly-ash gravel subbase layer 11.
And S4, welding one end of the second anti-settling tie bar 52 with the corresponding first anti-settling tie bar 51, and binding and fixing the other end of the second anti-settling tie bar 52 on the cement stabilized base layer 12 to be cast in place.
S5, pouring, forming and maintaining the cement stabilized base layer 12, and binding and lapping one end of the second anti-settling tie bar 52 far away from the first anti-settling tie bar 51 in the cement stabilized base layer 12; and simultaneously, pouring and maintaining the foundation concrete layer 3 on the periphery of the top of the well body 5.
S6, paving a first layer of anti-seepage grid fiber cloth 81 on the upper surface of the cement stabilized base layer 12 along the periphery of the well seat 6; and the paving work of the first asphalt mixture layer 21 in the face layer 2 is started.
S7, pouring steel fiber volcanic ash cement fine stone concrete on the periphery of the well seat 6 and between the first asphalt mixture layer 21 and the well seat 6 to form a reinforced concrete layer 4; and the pouring thickness of the steel fiber volcanic cement fine stone concrete layer is the same as the thickness of the first asphalt mixture layer 21.
S8, covering, sewing and sticking a second layer of impermeable grid fiber cloth 82 on the top of the first asphalt mixture layer 21; after the well lid 7 is installed, the second asphalt mixture layer 22 is integrally paved, and the second asphalt mixture layer 22 is paved across the gap by adopting the asphalt suspension dense graded mixture.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A municipal road inspection well comprises a road soil layer and a well body arranged in the road soil layer; the method is characterized in that: the well body comprises a well body (5), a well seat (6) and a well lid (7), the well seat (6) is arranged at the top end of the well body (5), and the well lid (7) is arranged at one end, far away from the well body (5), of the well seat (6); the road soil layer comprises a base layer (1) and a surface layer (2) positioned on the top of the base layer (1); the base layer (1) is arranged on the periphery of the well body (5), and the surface layer (2) is arranged on the periphery of the well seat (6); and a first layer of anti-seepage grid fiber cloth (81) is arranged at the junction of the surface layer (2) and the base layer (1) and along the periphery of the well body (5).
2. The town road manhole of claim 1, wherein: surface course (2) include first pitch mixture layer (21) and second pitch mixture layer (22), second pitch mixture layer (22) are located one side that basic unit (1) was kept away from in first pitch mixture layer (21), first pitch mixture layer (21) and second pitch mixture layer (22) juncture, and along well seat (6) week along laying second layer prevention of seepage grid fiber cloth (82).
3. The town road manhole of claim 1, wherein: the reinforced concrete layer (4) is arranged on the periphery of the well seat (6), the reinforced concrete layer (4) is located between the well seat (6) and the first asphalt mixture layer (21), and the reinforced concrete layer (4) is made of cast-in-place steel fiber volcanic ash concrete.
4. The town road manhole of claim 1, wherein: one end of the well body (5) close to the well seat (6) is embedded with a first anti-settling tie bar (51), and the first anti-settling tie bar (51) is arranged along the driving direction.
5. The town road manhole of claim 4, wherein: the base layer (1) is embedded with a second anti-sedimentation tie bar (52), the second anti-sedimentation tie bar (52) corresponds to the first anti-sedimentation tie bar (51), and the second anti-sedimentation tie bar (52) is fixedly connected with the corresponding first anti-sedimentation tie bar (51).
6. The town road manhole of claim 5, wherein: the second anti-settling tie bar (52) is arranged in a broken line shape or an S shape.
7. The town road manhole of claim 5, wherein: and a ring-shaped steel wire ring (53) is embedded in one end of the well body (5) close to the well seat (6).
8. The town road manhole of claim 1, wherein: the base layer (1) comprises a cement stabilized base layer (12) and a two-ash gravel subbase layer (11), wherein the cement stabilized base layer (12) is positioned at the top of the two-ash gravel subbase layer (11).
9. A construction method of a municipal road inspection well is characterized by comprising the following steps: the method comprises the following steps:
s1, measuring and lofting, excavating and cleaning a foundation pit, and burying a municipal pipeline;
s2, pouring, maintaining and forming or prefabricating and assembling a foundation of the well body (5); the lime-fly-ash gravel subbase layer (11) is rolled, consolidated and hardened;
s3, binding the first anti-settling tie bar (51) and the annular steel wire ring (53) at the top of the well body (5), and pouring, molding and maintaining; pouring, molding, curing or prefabricating and assembling a well seat (6) at the top end of the well body (5);
s4, connecting one end of a second anti-settling tie bar (52) with the corresponding first anti-settling tie bar (51), and binding and fixing the other end of the second anti-settling tie bar (52) in a cement water stable base layer (12) area to be cast in situ;
s5, pouring, forming and maintaining the cement-water stabilized base layer (12); pouring and maintaining the foundation concrete layer (3) on the periphery of the top of the well body (5);
s6, paving a first layer of anti-seepage grid fiber cloth (81) on the upper surface of the cement stabilized base layer (12) and along the periphery of the well seat (6); and starts the paving work of the first asphalt mixture layer (21);
s7, casting steel fiber volcanic ash cement fine stone concrete on the periphery of the well seat (6) and between the first asphalt mixture layer (21) and the well seat (6) in a cast-in-place mode to form a reinforced concrete layer (4);
s8, covering and sewing the top of the first asphalt mixture layer (21) and paving a second layer of impermeable grid fiber cloth (82); and after the well cover (7) is installed, the second asphalt mixture layer (22) is integrally paved.
10. The construction method of the town road manhole according to claim 9, wherein: and the second asphalt mixture layer (22) is paved across the seams and adopts asphalt suspension compact type graded mixture.
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| CN202210448780.0A CN114809238A (en) | 2022-04-27 | 2022-04-27 | Municipal road inspection well and construction method thereof |
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