CN111779032A - Assembled combined octagonal cable well and construction method thereof - Google Patents
Assembled combined octagonal cable well and construction method thereof Download PDFInfo
- Publication number
- CN111779032A CN111779032A CN202010650485.4A CN202010650485A CN111779032A CN 111779032 A CN111779032 A CN 111779032A CN 202010650485 A CN202010650485 A CN 202010650485A CN 111779032 A CN111779032 A CN 111779032A
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- cover plate
- bottom plate
- cable well
- octagonal
- combined
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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
- E02D29/121—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
- E02D29/124—Shaft entirely made of synthetic material
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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
- E02D29/14—Covers for manholes or the like; Frames for covers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1454—Non-circular covers, e.g. hexagonal, elliptic
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1472—Cover entirely made of synthetic material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/165—Shapes polygonal
- E02D2200/1664—Shapes polygonal made from multiple elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to the technical field of power construction, and discloses an assembled combined octagonal cable shaft and a construction method thereof; each component of the assembled combined octagonal cable well is made of novel light GFRP materials, the mass of each component does not exceed 50kg, the weight of the cable well is reduced on the premise of ensuring the structural performance of the cable well, the transportation and the installation are convenient, large-scale machinery is not needed, the site selection is flexible, the working efficiency is improved, and the assembled combined octagonal cable well has the characteristics of economy, reasonability, convenience in transportation and convenience in construction; according to the cable well, the stiffening panel and the fine aggregate concrete form the combined bottom plate, so that the integral rigidity of the bottom plate is improved, the integral stability of the cable well is enhanced, the problem of uneven settlement is avoided, and the cable well can adapt to construction of coastal soft soil foundations; the cable well forms a support system through the central upright post, the corner post and the cross beam, so that a force transmission path is more definite, and the integrity and the bearing capacity of the cable well are greatly improved.
Description
Technical Field
The invention relates to the technical field of power construction, in particular to an assembled combined octagonal cable well and a construction method thereof.
Background
In order to facilitate the pulling of the cable on the straight line section at the corner and the branch of the power transmission line, a cable well needs to be arranged.
In the cast-in-place reinforced concrete cable well commonly used in the prior art, the cable well is constructed by in-situ formwork erecting, reinforcing steel bar binding and concrete pouring, and the defects of long construction period, obvious weather influence on the construction period, large construction quality fluctuation, low mechanization degree, high labor intensity of workers, no contribution to environmental protection and the like exist.
The prefabricated assembly type concrete cable well in the prior art has the problems of overlarge integral weight, difficulty in hoisting and transporting and the like. For example, the patent number is 201621226722.X, a prefabricated cable shaft, including prefabricated well body, prefabricated well lid and prefabricated bottom plate, prefabricated well body, prefabricated well lid and prefabricated bottom plate all adopt reinforced concrete to make, and its whole weight is too big, hoist and mount transportation difficulty, be not convenient for the construction.
As another patent with the number 201911273785.9, the prefabricated light GFRP octagonal cable well and the construction method thereof have the advantages that a plurality of bottom plate assembly parts are provided, the integrity is weak, and uneven settlement is easy to occur on a soft foundation, so that the safe use of the cable well is influenced; meanwhile, the inner part is not supported, and when the external load is large, large deformation can occur.
Disclosure of Invention
The invention aims to provide an assembled combined octagonal cable well and a construction method thereof, which reduce the weight of the cable well and improve the construction efficiency by a GFRP section bar assembling mode on the premise of meeting the structural stability and the bearing performance of the cable well.
The technical solution for realizing the purpose of the invention is as follows:
an assembled combined octagonal cable well is characterized by comprising a bottom plate, a base, corner columns, side plates, a cover plate, a bolt, a stand column, a cross beam and an annular cross beam support; a fine stone concrete layer is arranged on the top surface of the bottom plate, and the bottom plate and the fine stone concrete layer form a combined bottom plate; eight bases are arranged on the bottom plate and arranged according to an octagon; each base is provided with an angle post, a plurality of side plates are arranged between every two adjacent angle posts, every two adjacent side plates are fixedly connected through a bolt, and the side plates are fixedly connected with the angle posts through bolts; an upright post is arranged at the center of the bottom plate, an annular beam support is arranged at the top end of the upright post, and a beam is arranged between each annular beam support and each corner post; the cover plate is laid on the cross beam; the corner columns, the upright columns and the cross beams jointly form a supporting system of the cable well; the bottom plate, the base, the corner posts, the side plates, the cover plate, the bolts, the stand columns, the cross beams and the annular cross beam support are all made of GFRP materials.
As a preferred technical scheme of the invention, the bottom plate is formed by splicing a plurality of stiffening panels, and two adjacent stiffening panels are connected through a tongue-and-groove; every stiffening panel all includes panel and a plurality of stiffening rib, and even on the panel be provided with a plurality of stiffening rib.
As a preferable technical scheme of the invention, the cross sections of the base and the corner post are both in an airplane shape, and the base is spliced with the bottom end of the corner post.
As a preferable technical scheme of the invention, the corner post is of a hollow structure, and the wall thickness of the corner post is not less than 5 mm.
As a preferable technical scheme of the invention, the side plates are box-type side plates, and the wall thickness of each side plate is not less than 4 mm.
As a preferred technical solution of the present invention, the cover plate includes a first cover plate, a second cover plate and a third cover plate, the first cover plate, the second cover plate and the third cover plate are combined to form an octagonal cover plate, and the first cover plate, the second cover plate and the third cover plate all adopt a grid structure.
As a preferable technical scheme of the invention, the cross section of the bolt is H-shaped.
As a preferred technical scheme of the invention, the upright post adopts a hollow structure, an annular beam support is fixed at the top end of the upright post, and eight notches are uniformly formed in the annular beam support, so that the installation of the beam is facilitated.
A construction method of an assembled combined octagonal cable well is characterized by comprising the following steps:
step one, connecting a plurality of stiffening panels through tongue-and-grooves to splice a whole bottom plate with required size; fixing the eight bases on the bottom plate through bolts, wherein the eight bases are arranged according to an octagon;
step two, pouring fine aggregate concrete on the whole bottom plate, and forming a combined bottom plate by the bottom plate and the fine aggregate concrete;
fixing the corner posts on the base in an inserting mode;
fixing the side plates on the corner posts through bolts, and fixedly connecting the two adjacent side plates through the bolts;
installing the upright column at the center of the bottom plate, fixedly connecting one end of the cross beam with the corner column, and connecting the other end of the cross beam with the upper notch of the annular cross beam support;
and sixthly, mounting the cover plate on the cross beam, and bonding waterproof adhesive tapes at all the abutted seams to complete the construction of the octagonal cable well.
Compared with the prior art, the invention has the following remarkable advantages:
(1) the assembled combined octagonal cable well is made of novel light GFRP materials, the mass of each component is not more than 50kg, the weight of the cable well is reduced on the premise that the structural performance of the cable well is guaranteed, transportation and installation are convenient, large-scale machinery is not needed, field selection is flexible, the working efficiency is improved, and the assembled combined octagonal cable well has the advantages of being economical, reasonable, convenient to transport and convenient to construct.
(2) The assembled combined octagonal cable well is made of novel light GFRP materials, all parts are anticorrosive, the weather resistance and the durability are good, later maintenance is not needed after one-time construction, the maintenance cost is reduced, and the assembled combined octagonal cable well can adapt to coastal corrosion environments.
(3) The assembled combined octagonal cable well adopts the stiffening panel and the fine aggregate concrete to form the combined bottom plate, improves the integral rigidity of the bottom plate, enhances the integral stability of the cable well, avoids the problem of uneven settlement, and is suitable for coastal soft soil foundation construction.
(4) The assembled combined octagonal cable well forms a support system through the central upright post, the corner posts and the cross beams, so that a force transmission path is more definite, and the integrity and the bearing capacity of the cable well are greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention configured to assemble an octagonal cable well.
Fig. 2 is a schematic structural view of the bottom plate in the octagonal cable well assembled by the construction method of the invention.
Fig. 3 is a schematic structural view of a base in the structural assembly octagonal cable well of the present invention.
Fig. 4 is a schematic structural view of a corner post in the structural assembly octagonal cable well.
Fig. 5 is a schematic structural view of a side plate in the structural assembly octagonal cable well.
Fig. 6 is a schematic structural view of the structural assembly octagonal cable well cover plate of the present invention.
Fig. 7 is a schematic view of the construction of the plug for assembling the octagonal cable well according to the present invention.
Fig. 8 is a schematic structural view of the structural assembly octagonal cable well central pillar of the invention.
Fig. 9 is a schematic structural view of a beam in the structural assembly octagonal cable well of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1, an assembled combined octagonal cable pit comprises a bottom plate 1, a base 2, a corner post 3, a side plate 4, a cover plate 5, a bolt 9, a stand column 10, a cross beam 11 and an annular cross beam support 12; a fine stone concrete layer is arranged on the top surface of the bottom plate 1, and the bottom plate 1 and the fine stone concrete layer form a combined bottom plate; eight bases 2 are arranged on the bottom plate 1, and the eight bases 2 are arranged according to an octagon; each base 2 is provided with a corner post 3, a plurality of side plates 4 are arranged between every two adjacent corner posts 3, every two adjacent side plates 4 are fixedly connected through a bolt 9, and the side plates 4 are fixedly connected with the corner posts 3 through the bolts 9; a vertical column 10 is arranged at the center of the bottom plate 1, an annular beam support 12 is arranged at the top end of the vertical column 10, and a beam 11 is arranged between each annular beam support 12 and each corner column 3; the cover plate 5 is laid on the cross beam 11; the corner columns 3, the upright columns 10 and the cross beams 11 form a support system of the cable well together; the base plate 1, the base 2, the corner posts 3, the side plates 4, the cover plate 5, the bolts 9, the stand columns 10, the cross beams 11 and the annular cross beam support 12 are all made of GFRP materials. The assembled combined octagonal cable well is made of novel light GFRP materials, the mass of each component is not more than 50kg, the weight of the cable well is reduced on the premise that the structural performance of the cable well is guaranteed, transportation and installation are convenient, large-scale machinery is not needed, field selection is flexible, the working efficiency is improved, and the assembled combined octagonal cable well has the advantages of being economical, reasonable, convenient to transport and convenient to construct.
As shown in fig. 2, the bottom plate 1 is formed by splicing a plurality of stiffening panels, and two adjacent stiffening panels are connected by a tongue-and-groove; each stiffening panel comprises a panel and a plurality of stiffening ribs, and the panel is uniformly provided with the plurality of stiffening ribs; the bottom plate 1 forms a combined bottom plate by pouring fine stone concrete with the thickness of 100mm, and the combined bottom plate can meet the requirement of building a cable well on a soft foundation.
As shown in fig. 3 and 4, the cross sections of the base 2 and the corner post 3 are both in an airplane shape, and the base 2 is spliced with the bottom end of the corner post 3, so that the construction is convenient and fast, and the construction efficiency is improved; the corner post 3 is of a hollow structure, and the wall thickness of the corner post 3 is not less than 5 mm.
As shown in fig. 5, the side plate 4 is a box-type side plate, the wall thickness of the side plate is not less than 4mm, and the box-type side plate greatly reduces the overall weight of the octagonal cable well.
As shown in fig. 6, the cover plate 5 includes a first cover plate 6, a second cover plate 7 and a third cover plate 8, the first cover plate 6, the second cover plate 7 and the third cover plate 8 are combined to form an octagonal cover plate, and the first cover plate 6, the second cover plate 7 and the third cover plate 8 all adopt a grid structure, so that the material consumption is reduced, and the construction cost of the cable well is further reduced.
As shown in fig. 7, the cross section of the plug 9 is H-shaped.
As shown in fig. 8 and 9, the upright column 10 is of a hollow structure, an annular beam support 12 is fixed at the top end of the upright column 10, and eight notches are uniformly formed in the annular beam support 12, so that the installation of the beam 11 is facilitated. One end of the beam 11 is connected with a notch of the annular beam support 12, and the other end of the beam 11 is connected with the corner post 3.
All parts of the assembled combined octagonal cable well are manufactured by a pultrusion method, and the assembled combined octagonal cable well has good integrity and stability.
A construction method of an assembled combined octagonal cable well comprises the following steps:
firstly, connecting a plurality of stiffening panels through tongues and grooves to splice a whole bottom plate 1 with required size; fixing the eight bases 2 on the bottom plate 1 through bolts, wherein the eight bases 2 are arranged according to an octagon;
step two, pouring fine aggregate concrete on the whole bottom plate 1, and forming a combined bottom plate by the bottom plate 1 and the fine aggregate concrete;
fixing the corner posts 3 on the base 2 in an inserting manner;
fixing the side plates 4 on the corner posts 3 through bolts 9, and fixedly connecting the adjacent two side plates 4 through the bolts 9;
step five, installing the upright post 10 at the center of the bottom plate 1, fixedly connecting one end of a cross beam 11 with the corner post 3, and connecting the other end of the cross beam 11 with a notch 11 on an annular cross beam support 12;
sixthly, mounting the cover plate 5 on the cross beam 11, and bonding waterproof rubber strips at all the abutted seams to complete the construction of the octagonal cable well.
In conclusion, each component of the assembled combined octagonal cable well is made of novel light GFRP materials, the mass of each component does not exceed 50kg, the weight of the cable well is reduced on the premise that the structural performance of the cable well is guaranteed, transportation and installation are convenient, large-scale machinery is not needed, field selection is flexible, the working efficiency is improved, and the assembled combined octagonal cable well has the characteristics of economy, reasonability, convenience in transportation and convenience in construction. The assembled combined octagonal cable well is made of novel light GFRP materials, all parts are anticorrosive, the weather resistance and the durability are good, later maintenance is not needed after one-time construction, the maintenance cost is reduced, and the assembled combined octagonal cable well can adapt to coastal corrosion environments. The assembled combined octagonal cable well adopts the stiffening panel and the fine aggregate concrete to form the combined bottom plate, improves the integral rigidity of the bottom plate, enhances the integral stability of the cable well, avoids the problem of uneven settlement, and is suitable for coastal soft soil foundation construction. The assembled combined octagonal cable well forms a support system through the central upright post, the corner posts and the cross beams, so that a force transmission path is more definite, and the integrity and the bearing capacity of the cable well are greatly improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An assembled combined octagonal cable well is characterized by comprising a bottom plate (1), a base (2), corner posts (3), side plates (4), a cover plate (5), a bolt (9), a stand column (10), a cross beam (11) and an annular cross beam support (12); a fine stone concrete layer is arranged on the top surface of the bottom plate (1), and the bottom plate (1) and the fine stone concrete layer form a combined bottom plate; the base plate (1) is provided with eight bases (2), and the eight bases (2) are arranged according to an octagon; each base (2) is provided with an angle post (3), a plurality of side plates (4) are arranged between every two adjacent angle posts (3), every two adjacent side plates (4) are fixedly connected through a bolt (9), and the side plates (4) are fixedly connected with the angle posts (3) through the bolts (9); an upright post (10) is arranged at the center of the bottom plate (1), an annular beam support (12) is arranged at the top end of the upright post (10), and a beam (11) is arranged between each annular beam support (12) and each corner post (3); the cover plate (5) is laid on the cross beam (11); the corner columns (3), the upright columns (10) and the cross beams (11) jointly form a support system of the cable well; the base plate (1), the base (2), the corner posts (3), the side plates (4), the cover plate (5), the bolts (9), the stand columns (10), the cross beams (11) and the annular cross beam support seats (12) are all made of GFRP materials.
2. The assembled combined octagonal cable pit according to claim 1, wherein the bottom plate (1) is formed by splicing a plurality of stiffening panels, and two adjacent stiffening panels are connected through a tongue-and-groove; every stiffening panel all includes panel and a plurality of stiffening rib, and even on the panel be provided with a plurality of stiffening rib.
3. The assembled combined octagonal cable pit according to claim 1, characterized in that the cross sections of the base (2) and the corner posts (3) are airplane-shaped, and the base (2) is plugged with the bottom ends of the corner posts (3).
4. Assembled composite octagonal cable pit according to claim 3, characterized in that the corner post (3) is of hollow construction, the wall thickness of the corner post (3) being not less than 5 mm.
5. The assembled combination octagonal cable pit according to claim 1, characterized in that the side plates (4) are box-type side plates, the wall thickness of which is not less than 4 mm.
6. The assembled combined octagonal cable pit according to claim 1, characterized in that the cover plate (5) comprises a first cover plate (6), a second cover plate (7) and a third cover plate (8), the first cover plate (6), the second cover plate (7) and the third cover plate (8) are combined into an octagonal cover plate, and the first cover plate (6), the second cover plate (7) and the third cover plate (8) are all in a grid structure.
7. Assembled composite octagonal cable pit according to claim 1, characterized in that the cross section of the plug (9) is H-shaped.
8. The assembled combined octagonal cable pit as claimed in claim 1, wherein the upright column (10) is of a hollow structure, an annular beam support (12) is fixed at the top end of the upright column (10), and eight notches are uniformly formed in the annular beam support (12) to facilitate the installation of the beam (11).
9. A method of constructing a fabricated combination octagonal wireline well according to claim 1, comprising the steps of:
step one, connecting a plurality of stiffening panels through tongue-and-groove joints to splice a whole bottom plate (1) with required size; the eight bases (2) are fixed on the bottom plate (1) through bolts, and the eight bases (2) are arranged according to an octagon;
step two, pouring fine aggregate concrete on the whole bottom plate (1), and forming a combined bottom plate by the bottom plate (1) and the fine aggregate concrete;
fixing the corner posts (3) on the base (2) in an inserting manner;
fixing the side plates (4) on the corner posts (3) through bolts (9), and fixedly connecting two adjacent side plates (4) through the bolts (9);
fifthly, the upright post (10) is arranged at the center of the bottom plate (1), one end of the cross beam (11) is fixedly connected with the corner post (3), and the other end of the cross beam (11) is connected with the notch (11) on the annular cross beam support (12);
sixthly, mounting the cover plate (5) on the cross beam (11), and bonding waterproof adhesive tapes at all the abutted seams to complete the construction of the octagonal cable well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650485.4A CN111779032A (en) | 2020-07-08 | 2020-07-08 | Assembled combined octagonal cable well and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010650485.4A CN111779032A (en) | 2020-07-08 | 2020-07-08 | Assembled combined octagonal cable well and construction method thereof |
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| CN111779032A true CN111779032A (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232691A (en) * | 2022-01-19 | 2022-03-25 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated inspection well and assembling method thereof |
-
2020
- 2020-07-08 CN CN202010650485.4A patent/CN111779032A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232691A (en) * | 2022-01-19 | 2022-03-25 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated inspection well and assembling method thereof |
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