CN110847239A - Assembled large reinforced concrete prefabricated inspection well and construction method thereof - Google Patents
Assembled large reinforced concrete prefabricated inspection well and construction method thereof Download PDFInfo
- Publication number
- CN110847239A CN110847239A CN201911174852.1A CN201911174852A CN110847239A CN 110847239 A CN110847239 A CN 110847239A CN 201911174852 A CN201911174852 A CN 201911174852A CN 110847239 A CN110847239 A CN 110847239A
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- China
- Prior art keywords
- side wall
- bottom plate
- steel bar
- reinforced concrete
- concrete
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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
- E02D29/121—Manhole shafts; Other inspection or access chambers; Accessories therefor characterised by the connection between shaft elements, e.g. of rings forming said shaft
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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
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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
- E03F5/027—The bottom made of prefabricated segments
Abstract
The invention discloses an assembled large-scale reinforced concrete prefabricated inspection well which comprises a concrete cushion layer, a bottom plate, side walls and a top plate, wherein a manhole is arranged on the top plate, and water collecting pits are arranged on the concrete cushion layer and the bottom plate; the bottom plate is made of bottom plate steel bar pouring concrete, and the four corners of the bottom plate are provided with cut corners for placing the side walls; the side wall is divided into two parts which are symmetrical to each other, a post-pouring belt is arranged at the joint of the two parts, meanwhile, each part of the side wall is of a U-shaped structure, the corner part of the bottom end of the side wall is placed on the concrete cushion, the middle part of the bottom end of the side wall is clamped on a bottom plate steel bar, and supporting rods are arranged on the inner side and the outer side of the side wall; the distance between the two side walls and the width of the exposed part of the bottom plate steel bar are two times of the thickness of the well wall; the top plate is prefabricated by a plurality of rectangular strips. According to the invention, the side wall is split into two parts for prefabrication, and the top plate is split into a plurality of rectangular strips for prefabrication, so that the time for on-site reinforcement, formwork erecting and concrete pouring can be reduced, and the construction period is shortened.
Description
Technical Field
The invention relates to the technical field of inspection wells, in particular to an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof.
Background
The prefabricated concrete inspection well is called an inspection well for short, and is multipurpose for laying pipes, wires and cables in electric wires, power cables, telecommunication, municipal channels and the like. The inspection well has the functions of being mainly used for construction personnel to lay wires, power cables, related pipelines and the like, and also can be used as an access port for workers to overhaul and maintain the wires and the cables. The traditional reinforced concrete inspection well is generally cast in a construction site, and the construction method comprises the steps of formwork erecting, reinforcing steel bar binding, concrete casting, maintenance and the like.
At present, with the acceleration of urban construction, urban underground municipal works are more and more, and in view of the special requirements of urban construction, the cast-in-place reinforced concrete inspection well has a lot of defects in the practical application: (1) the construction site required by the cast-in-place reinforced concrete inspection well occupies a large area, is complex in process and is very easily influenced by external conditions such as weather, so that the construction period is prolonged, and the engineering quality is difficult to guarantee. (2) The cast-in-place type reinforced concrete inspection well has the problem of low labor efficiency, and a large amount of manual cast-in-place operation is needed in the whole construction process, so that the mechanical degree is low, the construction speed is slow, and the requirement of the existing fast pace cannot be met. (3) The cast-in-place reinforced concrete inspection well has the advantages of high construction cost, long construction period, large occupied working hours, large volume of earth and stones in the construction process and is particularly not suitable for construction of busy road sections. At present, in order to save construction period, the inspection well can be partially prefabricated, and the cover plate part is prefabricated, completely prefabricated or a new technology. In view of the above, it is necessary to design a prefabricated large-sized reinforced concrete prefabricated manhole and a construction method thereof.
Disclosure of Invention
The invention aims to provide an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof.
In order to achieve the purpose, the invention provides an assembly type large-scale reinforced concrete prefabricated inspection well which comprises a concrete cushion layer, a bottom plate, side walls and a top plate, wherein the bottom plate is arranged on the upper surface of the concrete cushion layer;
the bottom plate is made of bottom plate steel bar pouring concrete, and corner cuts for placing side walls are arranged at four corners of the bottom plate;
the side wall is divided into two symmetrical parts, a post-pouring belt is arranged at the joint of the two parts, meanwhile, each part of the side wall is of a U-shaped structure, the corner part of the bottom end of the side wall is placed on the concrete cushion layer, the middle part of the bottom end of the side wall is clamped on the bottom plate reinforcing steel bar, detachable support rods for preventing the side wall from toppling over are arranged on the inner side and the outer side of the side wall, and the bottom ends of the support rods are fixed on the ground;
the distance between the two side walls and the width of the exposed part of the bottom plate steel bar are both twice of the thickness of the well wall;
the top plate is prefabricated by a plurality of rectangular strips.
Preferably, a clamping edge is arranged on the inner wall of the upper end of the side wall, the clamping edge is of a U-shaped structure, the top plate is clamped on the clamping edge, and the upper surface of the top plate is flush with the upper surface of the side wall.
Preferably, the side wall is provided with a plurality of hoisting points, and the hoisting points on the two parts of the side wall correspond to each other.
Preferably, the thickness of the post-cast strip is the same as that of the side wall.
Preferably, reinforcing steel bar heads are reserved at the bottom end and the side connecting end of the side wall.
A construction method of an assembly type large reinforced concrete prefabricated inspection well comprises the following steps:
(1) after the foundation pit is treated, pouring a concrete cushion layer, and reserving a water collecting pit;
(2) placing a bottom plate steel bar woven on site on the concrete cushion, and reserving a water collecting pit and corner cutting positions of four corners of the concrete cushion;
(3) hoisting the prefabricated side wall in place, then supporting the support rod inside and outside the side wall, and welding and connecting the steel bar heads reserved at the connecting part of the side wall and the bottom plate and the connecting part between the two side walls;
(4) supporting a bottom plate template and pouring;
(5) when the strength of the bottom plate is increased to 75% of the final strength, a post-cast strip between the two side walls is poured;
(6) and hoisting the top plate when the strength of the post-cast strip is increased to 75% of the final strength.
Preferably, the concrete step of prefabricating the side wall in the step (3) is to lay the side wall horizontally, the head of the reserved steel bar is formed by extending a main steel bar outwards to a proper length, the length is determined by a structural designer, a side wall model is established by using structural analysis software, the gravity center of a component is determined, and a lifting point is embedded in a proper position according to the lifting requirement.
Therefore, the assembled large-sized reinforced concrete prefabricated inspection well with the structure and the construction method thereof are adopted, the side wall is split into two parts for prefabrication, the top plate is split into a plurality of rectangular strips for prefabrication, the time for on-site reinforcement, formwork erecting and concrete pouring can be reduced, and the construction period is shortened.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof according to the present invention;
FIG. 2 is a concrete cushion diagram of an embodiment of the assembled large-scale reinforced concrete prefabricated inspection well and a construction method thereof;
FIG. 3 is a schematic diagram of a prefabricated bottom plate steel bar of an embodiment of the assembled large-scale reinforced concrete prefabricated inspection well and a construction method thereof;
FIG. 4 is a schematic view of a prefabricated side wall of an embodiment of the assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof of the invention;
FIG. 5 is a schematic view of a bottom supporting plate formwork according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a poured post-cast strip of an embodiment of the assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof;
FIG. 7 is a schematic diagram of a top plate hoisting in an embodiment of the assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof;
FIG. 8 is a schematic side wall structure view of an embodiment of the assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof.
Detailed Description
Examples
Fig. 1 is a schematic structural diagram of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof, and as shown in the figure, the invention provides the assembled large-sized reinforced concrete prefabricated inspection well, which comprises a concrete cushion layer 1, a bottom plate 2 arranged on the upper surface of the concrete cushion layer 1, side walls 3 clamped around the bottom plate 2 and a top plate 4 arranged on the tops of the side walls 3, wherein a manhole 5 is arranged on the top plate 4, and a sump 6 is arranged on the concrete cushion layer 1 and the bottom plate 2; the bottom plate 2 is made of bottom plate reinforcing steel bars 7 through pouring concrete, corner cuts 8 used for placing side walls are arranged at four corners of the bottom plate 2, the side walls 3 are divided into two symmetrical parts, a post-pouring belt 9 is arranged at the joint of the two parts, meanwhile, each part of the side walls 3 are arranged to be in a U-shaped structure, bottom corner parts of the side walls 3 are placed on the concrete cushion layer 1, the middle parts of the bottom ends of the side walls 3 are clamped on the bottom plate reinforcing steel bars 2, detachable supporting rods 10 for preventing the side walls from toppling over are arranged on the inner side and the outer side of each side wall 3, the bottom ends of the supporting rods 10 are fixed on the ground, and the distance between the two side; the top plate 4 is prefabricated from a number of rectangular strips. According to the invention, the side wall is split into two parts for prefabrication, the top plate is split into a plurality of rectangular strips for prefabrication, and the time for on-site reinforcement, formwork support and concrete pouring can be reduced, so that the construction period is shortened.
Be provided with card edge 11 on the upper end inner wall of side wall 3, card edge 11 sets up to U type structure, and roof 4 card is established on card edge 11, and the upper surface of roof 4 flushes with the upper surface of side wall 3 mutually.
The side walls 3 are provided with a plurality of hoisting points 12, and the hoisting points 12 on the two side walls 3 correspond to each other. The thickness of the post-cast strip 9 is the same as that of the side wall 3.
And reinforcing steel bar heads 13 are reserved at the bottom end and the side connecting end of the side wall 3.
FIG. 2 is a schematic diagram of a concrete cushion layer of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof, FIG. 3 is a schematic diagram of a bottom plate reinforcement prefabrication of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof, FIG. 4 is a schematic diagram of a prefabricated side wall of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof, FIG. 5 is a schematic diagram of a bottom plate formwork of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof, FIG. 6 is a schematic diagram of a poured post-pouring strip of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof, FIG. 7 is a schematic diagram of a top plate of a hoisting of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof, and FIG. 8 is a schematic diagram of a side wall of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well and a construction method thereof The structure is schematic. As shown in the figure, the construction method of the large-scale prefabricated reinforced concrete inspection well comprises the following steps:
(1) and after the foundation pit is treated, pouring a concrete cushion and reserving a water collecting pit.
(2) And placing the base plate steel bars woven on site on the concrete cushion layer, and reserving the cut corner positions of the four corners of the water collecting pit and the concrete cushion layer.
(3) Hoisting the prefabricated side wall in place, then supporting the support rod inside and outside the side wall, and welding and connecting the steel bar heads reserved at the connecting part of the side wall and the bottom plate and the connecting part between the two side walls; the method comprises the specific steps of placing the prefabricated side wall in a lying mode, enabling a reserved steel bar head to extend outwards from a main steel bar to a proper length, determining the length by structural designers, building a side wall model by using structural analysis software, determining the gravity center of a component, and embedding lifting points in proper positions according to lifting requirements.
(4) And (5) supporting the bottom plate template and pouring.
(5) And when the strength of the bottom plate is increased to 75% of the final strength, pouring a post-pouring belt between the two side walls.
(6) And hoisting the top plate when the strength of the post-cast strip is increased to 75% of the final strength.
Therefore, the assembled large-sized reinforced concrete prefabricated inspection well with the structure and the construction method thereof are adopted, the side wall is split into two parts for prefabrication, the top plate is split into a plurality of rectangular strips for prefabrication, the time for on-site reinforcement, formwork erecting and concrete pouring can be reduced, and the construction period is shortened.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a prefabricated inspection shaft of assembled large-scale reinforced concrete which characterized in that:
the concrete cushion comprises a concrete cushion layer, a bottom plate arranged on the upper surface of the concrete cushion layer, side walls clamped around the bottom plate and a top plate arranged on the tops of the side walls, wherein a manhole is arranged on the top plate, and water collecting pits are arranged on the concrete cushion layer and the bottom plate;
the bottom plate is made of bottom plate steel bar pouring concrete, and corner cuts for placing side walls are arranged at four corners of the bottom plate;
the side wall is divided into two symmetrical parts, a post-pouring belt is arranged at the joint of the two parts, meanwhile, each part of the side wall is of a U-shaped structure, the corner part of the bottom end of the side wall is placed on the concrete cushion layer, the middle part of the bottom end of the side wall is clamped on the bottom plate reinforcing steel bar, detachable support rods for preventing the side wall from toppling over are arranged on the inner side and the outer side of the side wall, and the bottom ends of the support rods are fixed on the ground;
the distance between the two side walls and the width of the exposed part of the bottom plate steel bar are both twice of the thickness of the well wall;
the top plate is prefabricated by a plurality of rectangular strips.
2. The fabricated large-sized reinforced concrete prefabricated inspection well according to claim 1, wherein: the upper end inner wall of the side wall is provided with a clamping edge, the clamping edge is of a U-shaped structure, the top plate is clamped on the clamping edge, and the upper surface of the top plate is flush with the upper surface of the side wall.
3. The fabricated large-sized reinforced concrete prefabricated inspection well according to claim 2, wherein: and a plurality of hoisting point positions are arranged on the side wall, and the hoisting point positions on the two parts of the side wall correspond to each other.
4. The fabricated large-sized reinforced concrete prefabricated inspection well and the construction method thereof according to claim 3, wherein: and the thickness of the post-cast strip is the same as that of the side wall.
5. The fabricated large-sized reinforced concrete prefabricated inspection well according to claim 4, wherein: and reinforcing steel bar heads are reserved at the bottom end and the side connecting end of the side wall.
6. A construction method of the fabricated large-sized reinforced concrete prefabricated manhole according to any one of claims 1 to 5, comprising the steps of:
(1) after the foundation pit is treated, pouring a concrete cushion layer, and reserving a water collecting pit;
(2) placing a bottom plate steel bar woven on site on the concrete cushion, and reserving a water collecting pit and corner cutting positions of four corners of the concrete cushion;
(3) hoisting the prefabricated side wall in place, then supporting the support rod inside and outside the side wall, and welding and connecting the steel bar heads reserved at the connecting part of the side wall and the bottom plate and the connecting part between the two side walls;
(4) supporting a bottom plate template and pouring;
(5) when the strength of the bottom plate is increased to 75% of the final strength, a post-cast strip between the two side walls is poured;
(6) and hoisting the top plate when the strength of the post-cast strip is increased to 75% of the final strength.
7. The construction method of the assembled large-sized reinforced concrete prefabricated inspection well according to claim 6, wherein: the concrete step of prefabricating the side wall in the step (3) is to lay the side wall horizontally, the head of the reserved steel bar is formed by extending a main steel bar outwards to a proper length, the length is determined by structural designers, a side wall model is built by using structural analysis software, the gravity center of a component is determined, and a lifting point is pre-buried in a proper position according to the lifting requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911174852.1A CN110847239A (en) | 2019-11-26 | 2019-11-26 | Assembled large reinforced concrete prefabricated inspection well and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911174852.1A CN110847239A (en) | 2019-11-26 | 2019-11-26 | Assembled large reinforced concrete prefabricated inspection well and construction method thereof |
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| CN110847239A true CN110847239A (en) | 2020-02-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827459A (en) * | 2020-07-28 | 2020-10-27 | 扬州蓝翔机电工程有限公司 | Construction method of assembled sewage intercepting well |
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2019
- 2019-11-26 CN CN201911174852.1A patent/CN110847239A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827459A (en) * | 2020-07-28 | 2020-10-27 | 扬州蓝翔机电工程有限公司 | Construction method of assembled sewage intercepting well |
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