CN211447021U - Prefabricated inspection shaft of assembled large-scale reinforced concrete - Google Patents
Prefabricated inspection shaft of assembled large-scale reinforced concrete Download PDFInfo
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- CN211447021U CN211447021U CN201922067131.2U CN201922067131U CN211447021U CN 211447021 U CN211447021 U CN 211447021U CN 201922067131 U CN201922067131 U CN 201922067131U CN 211447021 U CN211447021 U CN 211447021U
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Abstract
The utility model 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 the top plate is provided with a manhole, and the concrete cushion layer and the bottom plate are provided with a water collecting pit; 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. The utility model discloses be prefabricated for two parts with the side wall split, the roof split is that the multiple rectangle is rectangular to be prefabricated, and the time of muscle, formwork, concrete placement is compiled to reducible scene to the time limit for a project has been shortened.
Description
Technical Field
The utility model belongs to the technical field of the inspection shaft technique and specifically relates to a prefabricated inspection shaft of assembled large-scale reinforced concrete is related to.
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 manhole.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prefabricated inspection shaft of assembled large-scale reinforced concrete is prefabricated for two parts with the side wall split, and the roof split is rectangular to be prefabricated for many parts rectangle, and reducible on-the-spot time of compiling muscle, formwork, concrete placement to the time limit for a project has been shortened.
In order to achieve the purpose, the utility model provides an assembly type large-scale reinforced concrete prefabricated inspection well, which 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 the top plate is provided with a manhole, and the concrete cushion layer and the bottom plate are provided with a water collecting pit;
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 utility model adopts the above structure prefabricated inspection shaft of assembled large-scale reinforced concrete, prefabricate for two parts with the side wall split, the roof split is rectangular to be prefabricated for many parts rectangle, and reducible on-the-spot time of weaving muscle, formwork, concrete placement to the time limit for a project has been shortened.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of an assembled large-sized reinforced concrete prefabricated inspection well of the present invention;
FIG. 2 is a schematic diagram of a concrete cushion layer of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention;
FIG. 3 is a schematic diagram of the prefabricated bottom plate steel bars of the embodiment of the assembly type large-sized reinforced concrete prefabricated inspection well of the utility model;
FIG. 4 is a schematic view of a prefabricated side wall of an embodiment of the assembly type large-sized reinforced concrete prefabricated inspection well of the utility model;
FIG. 5 is a schematic view of a bottom plate formwork of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention;
FIG. 6 is a schematic view of a pouring post-pouring belt of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention;
FIG. 7 is a schematic view of a top plate for hoisting in an embodiment of the prefabricated assembly type large-sized reinforced concrete inspection well of the present invention;
fig. 8 is the utility model relates to a side wall structure sketch map of large-scale reinforced concrete prefabricated inspection shaft of assembled embodiment.
Detailed Description
Examples
Fig. 1 is a schematic structural view of an embodiment of the assembly type large-sized reinforced concrete prefabricated inspection well of the present invention, as shown in the drawings, the present invention provides an assembly type 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, a side wall 3 clamped around the bottom plate 2 and a top plate 4 arranged on the top of the side wall 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. The utility model discloses be prefabricated for two parts with the side wall split, the roof split is that the rectangle of many shares is prefabricated, and the muscle is compiled to reducible scene, the template, concrete placement's time to the time limit for a project has been 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 pad of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention, FIG. 3 is a schematic view of the prefabricated bottom plate steel bars of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention, FIG. 4 is a schematic view of a prefabricated side wall of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention, FIG. 5 is a schematic view of a bottom plate formwork of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention, FIG. 6 is a schematic view of a post-pouring belt of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention, FIG. 7 is a schematic view of a ceiling of an embodiment of the prefabricated large-sized reinforced concrete inspection well of the present invention, fig. 8 is the utility model relates to a side wall structure sketch map of large-scale reinforced concrete prefabricated inspection shaft of assembled embodiment. 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 utility model adopts the above structure prefabricated inspection shaft of assembled large-scale reinforced concrete, prefabricate for two parts with the side wall split, the roof split is rectangular to be prefabricated for many parts rectangle, and reducible on-the-spot time of weaving muscle, formwork, concrete placement to the time limit for a project has been 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 skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.
Claims (5)
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 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922067131.2U CN211447021U (en) | 2019-11-26 | 2019-11-26 | Prefabricated inspection shaft of assembled large-scale reinforced concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922067131.2U CN211447021U (en) | 2019-11-26 | 2019-11-26 | Prefabricated inspection shaft of assembled large-scale reinforced concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847239A (en) * | 2019-11-26 | 2020-02-28 | 河北建设集团安装工程有限公司 | Assembled large reinforced concrete prefabricated inspection well and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847239A (en) * | 2019-11-26 | 2020-02-28 | 河北建设集团安装工程有限公司 | Assembled large reinforced concrete prefabricated inspection well and construction method thereof |
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