CN110295627B - Construction method of road inspection well - Google Patents
Construction method of road inspection well Download PDFInfo
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- CN110295627B CN110295627B CN201910573957.8A CN201910573957A CN110295627B CN 110295627 B CN110295627 B CN 110295627B CN 201910573957 A CN201910573957 A CN 201910573957A CN 110295627 B CN110295627 B CN 110295627B
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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
Abstract
The invention relates to a construction method of a road inspection well, which comprises the following steps: manufacturing a reinforced concrete well ring integrated plate template; prefabricating a reinforced concrete walling crib integrated plate on site; constructing a foundation and a well body of the inspection well; backfilling earthwork at the periphery of the well body; installing a reinforced concrete well curb integrated plate; constructing a road base layer; and constructing a road surface layer. The invention is beneficial to improving the construction efficiency of the inspection well, avoiding the problem of stress concentration formed on the well body and the risk of soaking the foundation of the inspection well by rainwater, and prolonging the service durability of the inspection well.
Description
Technical Field
The invention belongs to the technical field of road inspection well construction, and particularly relates to a road inspection well construction method.
Background
The various inspection wells arranged on outdoor roads can generate stress concentration to damage under the repeated action of vehicle load and rainwater, wherein the damage phenomena of sinking around the well, pavement cracking, well ring cracking, well cover uplift and the like seriously affect the driving comfort and safety. After the inspection well has the diseases, the inspection well has to be excavated, so that the outdoor road is usually temporarily paralyzed, the traffic is influenced, meanwhile, the appearance of the outdoor road is influenced due to improper treatment of the inspection well, and particularly, the image of the city is damaged due to the similar problems in the city, so that the technical problems of preventing the damage of the road inspection well and improving the service durability of the inspection well are construction technical problems which need to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a construction method of a road inspection well, which improves the construction efficiency and is beneficial to prolonging the service life of the inspection well.
The technical scheme adopted by the invention for solving the technical problem is to provide a road inspection well construction method, which comprises the following steps:
(1) manufacturing a reinforced concrete well ring integrated plate template: the template comprises a square template, a circular template and a bottom template, the bottom template is a concrete ground which is inclined downwards from the periphery to the center, a round hole matched with the outer diameter of the narrow ring of the finished walling crib is reserved in the center of the bottom template, and the outer diameter of the circular template is matched with the inner diameter of the wide ring of the finished walling crib;
(2) prefabricating a reinforced concrete walling crib integrated plate on site: paying off the position of a square template on a bottom template, buckling and sleeving a narrow ring of a finished well ring in a central circular hole of the bottom template, sleeving a circular template in a wide ring inner hole of the finished well ring, installing the square template according to paying off, binding steel bars between the square template and the circular template, pouring a concrete slab, and removing the template after the strength reaches the standard to obtain a reinforced concrete well ring integrated plate;
(3) constructing a foundation and a well body of the inspection well: pouring an inspection well foundation on the foundation, and building a well body above the inspection well foundation after the strength reaches the standard;
(4) backfilling earthwork at the periphery of the well body: backfilling earthwork around the well in layers;
(5) installing a reinforced concrete well curb integrated plate: leveling the top of the well body, and processing the flatness and compactness of backfill soil on the periphery of the well body within the installation range of the reinforced concrete well ring integrated plate to enable the surface of the backfill soil to be flush with the top end of the well body, and installing the reinforced concrete well ring integrated plate on the top end of the well body;
(6) construction of a road base layer: paving a road base layer, wherein the surface elevation of the road base layer is consistent with the outer edge elevation of the reinforced concrete well ring integrated plate;
(7) construction of a road surface layer: road pavement layer paves, road pavement layer's surface elevation is unanimous with the top elevation of reinforced concrete walling crib intergral template.
The depth of the central circular hole of the bottom template is larger than the height of the narrow ring of the finished product well ring.
The surface gradient of the bottom template is 2-5 degrees.
The inspection staircase is synchronously installed in place during the masonry construction of the well body.
And (5) when the reinforced concrete well curb integrated plate is installed, installing the finished well curb in a direction deviating from the direction of the escalator to be inspected.
And (4) controlling the thickness of each layer of backfill soil not to exceed 200mm, and sampling and detecting the compactness of each layer of backfill soil by adopting a cutting ring.
And (6) leveling the top of the well body by adopting cement mortar.
Advantageous effects
Firstly, in the invention, the reinforced concrete well curb integrated plate with the integrated structure is obtained by pouring concrete into the well curb, and the well curb can be installed by installing the reinforced concrete well curb integrated plate during construction, so that the need of erecting a template in the well curb installation in the prior art is avoided, and the construction is simplified and the cost is reduced. And the reinforced concrete well curb integrated plate is prefabricated on site, can be synchronously constructed with the inspection well, and is favorable for improving the construction efficiency and shortening the construction period.
Secondly, compared with the situation that stress concentration is easily caused when the force of the well ring is directly acted on the well body in the prior art, the well ring and the concrete plate form the reinforced concrete well ring integrated plate, the bottom pressure-bearing area is greatly increased, the well body and the peripheral soil body jointly bear the upper load, the problem of well body stress concentration is avoided, the inspection well is favorably prevented from being damaged by stress, and the durability of the inspection well is improved.
And thirdly, the upper end surface of the reinforced concrete well ring integrated plate is of a structure with the outer edge inclined downwards to form a drainage slope, accumulated water on the upper end surface can be drained outside the range of the reinforced concrete well ring integrated plate in the using process, the risk that the foundation of the inspection well is soaked by rainwater is favorably reduced, and the durability of the inspection well is favorably improved.
Drawings
Fig. 1 is a schematic diagram of a template structure of a reinforced concrete walling crib integrated plate.
Fig. 2 is a schematic structural view of a reinforced concrete walling crib integrated plate.
Fig. 3 is a schematic structural diagram of a foundation and a well bore of the inspection well.
Fig. 4 is a plan view of the installation of a reinforced concrete collar integral plate.
Fig. 5 is a sectional view taken along line a-a of fig. 4.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A construction method of a road inspection well comprises the following steps:
(1) manufacturing a reinforced concrete well ring integrated plate template: as shown in fig. 1, the mold plates include a square mold plate 1-1, a circular mold plate 1-2, and a bottom mold plate. The square template 1-1 is square and is composed of 4 long templates, the length of the long template is equal to the outer diameter R2+800mm of the narrow ring at the upper part of the finished walling crib 2-1, and the height of the long template is 80mm-100 mm. The outer diameter of the circular template 1-2 is matched with the inner diameter of the wide ring at the lower part of the finished product well ring 2-1. The bottom template is a concrete ground, a 2-degree downward inclination is formed from the periphery to the center, a round hole matched with the outer diameter of the narrow ring at the upper part of the finished walling crib 2-1 is reserved in the center of the bottom template, the depth of the round hole is 100-200 mm, and the round hole is larger than the height of the narrow ring of the finished walling crib 2-1.
(2) Prefabricating a reinforced concrete walling crib integrated plate on site: paying off the position of the square template 1-1 on the bottom template, reversely buckling the upper narrow ring of the finished product well ring 2-1 in the central circular hole of the bottom template, and sleeving the circular template 1-2 in the wide ring inner hole of the finished product well ring 2-1. And installing the square template 1-1 according to the paying-off, wherein the elevation of the upper end of the square template 1-1 is the same as that of the upper end of the round template 1-2, and binding reinforcing steel bars between the square template 1-1 and the round template 1-2.
And pouring a concrete slab 3 between the square template 1-1 and the circular template 1-2, wherein the concrete strength grade is not less than C25, and the maintenance is not less than 7d, so that the structure of the reinforced concrete well curb integrated plate is shown in figure 2. The template is dismantled after the concrete strength is not less than 75% of design intensity, concentrates the pile up, and the concrete strength of reinforced concrete walling crib intergral template reaches 100% the rear can install. The reinforced concrete well curb integrated plate can be made in advance by adopting construction waste, does not occupy the construction period, and is green and environment-friendly.
(3) Constructing a foundation and a well body of the inspection well: and after the foundation treatment is finished, pouring an inspection well foundation 4, wherein the inspection well foundation 4 is C20 concrete and has the thickness not less than 100 mm. The construction of the shaft 5 is carried out after the strength of the concrete of the inspection well foundation 4 reaches 75%, cement mortar with the strength not less than M7.5 is used for the group building of the shaft 5, concrete solid bricks with the strength not less than Mu20 are used for the building blocks, and the inspection staircase 6 is synchronously installed in place in the construction process of the shaft 5, as shown in figure 3. And (5) covering the well body 5 in time after the building is finished to prevent rain, and carrying out the next procedure construction after the well body is placed for 7 d. If the well bore 5 is located in a very humid environment or below the groundwater level, the outer wall of the well bore 5 should be waterproofed.
(4) Backfilling earthwork at the periphery of the well body: and after the well body 5 is built and approved, peripheral earthwork backfilling is carried out. And backfilling earthwork layer by layer, wherein the thickness of each layer is not more than 200mm, and each layer of backfilling is detected by adopting a cutting ring sampling method, so that the compactness of the backfilled soil is ensured. If the road roadbed layer 8-1 is designed to be thicker than the reinforced concrete well ring integrated plate, a layer of road roadbed layer 8-1 is constructed firstly, the thickness is not less than 100mm and is less than 100mm, the earthwork backfill thickness is reduced, the backfill height hj is reduced to be 100+ h0-h1, wherein h0 is the thickness of the integrated plate, and h1 is the thickness of the road roadbed layer.
(5) Installing a reinforced concrete well curb integrated plate:
and (3) leveling the top of the well body 5 by adopting cement mortar with the same strength as the reinforced concrete well ring integrated plate.
The surface flatness and compactness of the backfill soil in the installation range of the reinforced concrete well curb integrated plate are checked, the flatness does not meet the requirement, the thin sand layer can be paved for tamping treatment, the compactness does not meet the requirement, the tamping treatment is carried out firstly, and then the sand stone with reasonable gradation is backfilled to the installation height of the integrated plate.
The reinforced concrete well ring integrated plate is installed at the top of the well body 5, the elevation of the outer edge of the reinforced concrete well ring integrated plate is the same as the elevation of the upper surface of a road base layer 8-1, and the inner diameter of the inspection well is 100-300 mm larger than the outer diameter of the well cover 2-2.
In order to facilitate the maintenance of the inspection well, when the reinforced concrete well curb integrated plate is installed, the finished well curb 2-1 is installed in a direction deviated from the direction of the inspection staircase 6, and the minimum distance from the inner diameter of the finished well curb 2-1 to the inner wall of the well body 5 is controlled to be 0-100 mm.
(6) Construction of a road base layer: and (5) repeating the steps (3) to (5) for multiple times, completing the construction of all inspection wells on the road to be constructed, paving a road base layer 8-1 according to the design requirement, wherein the surface elevation of the road base layer 8-1 is the same as the outer edge elevation of the reinforced concrete well curb integrated plate.
(7) Construction of a road surface layer: paving a road pavement layer 8-2, wherein the surface elevation of the road pavement layer 8-2 is consistent with the top elevation of the reinforced concrete well curb integrated plate.
Claims (7)
1. A construction method of a road inspection well comprises the following steps:
(1) manufacturing a reinforced concrete well ring integrated plate template: the template comprises a square template (1-1), a circular template (1-2) and a bottom template, wherein the bottom template is a concrete ground which is inclined downwards from the periphery to the center, a round hole matched with the outer diameter of a narrow ring of the finished product well ring (2-1) is reserved in the center of the bottom template, and the outer diameter of the circular template (1-2) is matched with the inner diameter of a wide ring of the finished product well ring (2-1);
(2) prefabricating a reinforced concrete walling crib integrated plate on site: paying off the position of a square template (1-1) on a bottom template, buckling and sleeving a narrow ring of a finished product well ring (2-1) in a central circular hole of the bottom template, sleeving a circular template (1-2) in a wide ring inner hole of the finished product well ring (2-1), installing the square template (1-1) according to paying off, enabling the elevation of the upper end of the square template (1-1) to be the same as that of the upper end of the circular template (1-2), binding steel bars between the square template (1-1) and the circular template (1-2), pouring a concrete slab (3), and removing the template after the strength reaches the standard to obtain a reinforced concrete well ring integrated plate;
(3) constructing a foundation and a well body of the inspection well: pouring an inspection well foundation (4) on the foundation, and building a well body (5) above the inspection well foundation (4) after the strength reaches the standard;
(4) backfilling earthwork at the periphery of the well body: backfilling earthwork around the well body (5) layer by layer;
(5) installing a reinforced concrete well curb integrated plate: leveling the top of the well body (5), processing the flatness and compactness of backfill soil on the periphery of the well body (5) within the installation range of the reinforced concrete well ring integrated plate, enabling the surface of the backfill soil to be flush with the top end of the well body (5), and installing the reinforced concrete well ring integrated plate on the top end of the well body (5);
(6) construction of a road base layer: paving a road roadbed layer (8-1), wherein the surface elevation of the road roadbed layer (8-1) is consistent with the outer edge elevation of the reinforced concrete well ring integrated plate;
(7) construction of a road surface layer: paving road surface layer (8-2), the surface elevation of road surface layer (8-2) is unanimous with the top elevation of reinforced concrete walling crib intergral template.
2. The construction method of the road manhole as claimed in claim 1, wherein: the depth of the central round hole of the bottom template is larger than the height of the narrow ring of the finished product well ring (2-1).
3. The construction method of the road manhole as claimed in claim 1, wherein: the surface gradient of the bottom template is 2-5 degrees.
4. The construction method of the road manhole as claimed in claim 1, wherein: the inspection staircase (6) is synchronously installed in place during the masonry construction of the well body (5).
5. The construction method of the road manhole as claimed in claim 4, wherein: and (5) when the reinforced concrete well ring integrated plate is installed, installing the finished well ring (2-1) in a direction deviating from the direction of the inspection staircase (6).
6. The construction method of the road manhole as claimed in claim 1, wherein: and (4) controlling the thickness of each layer of backfill soil not to exceed 200mm, and sampling and detecting the compactness of each layer of backfill soil by adopting a cutting ring.
7. The construction method of the road manhole as claimed in claim 1, wherein: and (5) leveling the top of the well body (5) by adopting cement mortar in the step (6).
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| CN113622234A (en) * | 2020-05-09 | 2021-11-09 | 北京建工路桥集团有限公司 | Method for synchronously constructing road base and inspection well |
| CN111733887A (en) * | 2020-06-15 | 2020-10-02 | 中国一冶集团有限公司 | Construction method of asphalt concrete road inspection well first-rising structure |
| CN111827040A (en) * | 2020-07-23 | 2020-10-27 | 湖北烜豪建筑工程有限公司 | Construction process for well road with pipeline |
| CN113944219A (en) * | 2021-09-14 | 2022-01-18 | 北京市政建设集团有限责任公司 | Construction process for prefabricating gutter inlet |
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| JP2001336168A (en) * | 2000-05-30 | 2001-12-07 | Inoac Corp | Fixing ring for flexible joint for connecting pipe of manhole |
| CN205369311U (en) * | 2016-01-06 | 2016-07-06 | 深圳市路桥建设集团有限公司 | A walling crib for reinforcing or inspection shaft on maintenance town road |
| CN207469309U (en) * | 2017-11-23 | 2018-06-08 | 中铁二十局集团市政工程有限公司 | A kind of rectangular prefabricated assembled inspection shaft |
| CN108487323B (en) * | 2018-03-21 | 2020-09-15 | 天津炬实科技发展股份有限公司 | Construction process of manhole cover device of inspection well on road |
| CN208455793U (en) * | 2018-04-30 | 2019-02-01 | 安徽省公路桥梁工程有限公司 | Heavy Traffic road inspection well walling crib |
| CN109695258A (en) * | 2019-01-24 | 2019-04-30 | 陈方 | A kind of band bell and spigot antiseep inspection shaft and construction method |
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