CN108005108A - Pipe gallery - Google Patents
Pipe gallery Download PDFInfo
- Publication number
- CN108005108A CN108005108A CN201610930010.4A CN201610930010A CN108005108A CN 108005108 A CN108005108 A CN 108005108A CN 201610930010 A CN201610930010 A CN 201610930010A CN 108005108 A CN108005108 A CN 108005108A
- Authority
- CN
- China
- Prior art keywords
- pedestal
- glass steel
- top plate
- pipe gallery
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 113
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 112
- 239000010959 steel Substances 0.000 claims abstract description 112
- 239000011521 glass Substances 0.000 claims abstract description 93
- 239000011152 fibreglass Substances 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 11
- 238000002474 experimental method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000010008 shearing Methods 0.000 abstract description 5
- 238000004078 waterproofing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000013439 planning Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 206010017472 Fumbling Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- 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
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
-
- 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
- E02D29/16—Arrangement or construction of joints in foundation structures
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
The present invention relates to a kind of piping lane, specially a kind of pipe gallery, including glass steel top plate, glass steel pedestal, glass steel top plate include top plate body and supporting item, top plate body is integrally formed for " bow " shape and with supporting item, glass steel top plate and glass steel pedestal releasable connection；Prefabricated component is produced by using fiberglass, including glass steel top plate and glass steel pedestal, binding rivet rivets, cost is greatly reduced from consumptive material, the assembly method between assembly method and pedestal one and pedestal two between glass steel top plate and glass steel pedestal is got by many experiments, water proofing property, the mode of even more than traditional steel and concreting is all up in rigidity and shearing strength, not only for production by way of prefabricated component from assembly method, production cost has both greatly been saved for transport and construction, cost of transportation also a saving construction period at the same time, reduce difficulty of construction, also substantially increase construction site adaptability at the same time.
Description
Technical field
The present invention relates to a kind of piping lane, is specially a kind of pipe gallery.
Background technology
Pipe gallery (Japan claims " common trench ", TaiWan, China to claim " Common Ducts "), is exactly that underground urban duct synthesis is walked
Corridor.A tunnel space is built in Urban Underground, by electric power, the various utilities pipeline collection such as communication, combustion gas, heat supply, plumbing
In one, equipped with special access hole, hoisting port and monitoring system, implement unified planning, Uniting, unified construction and pipe
Reason, is the important infrastructure and " lifeline " for ensureing city operations.
With the growth and expanding economy of China human mortality, incident is that the planning of various municipal pipelines and cloth are put up a question
The quantity of the pipelines such as topic, various water supply, draining, electric power, communication is more and more, is uniformly coordinated and plans due to lacking, often goes out
Existing ground excavation and filling phenomenon, has seriously affected the daily life of resident and the orderly operation in city.Pipe gallery solves
Above-mentioned puzzlement government and citizen for many years the problem of, unified planning, design, construction and dimension can be implemented to various municipal public use pipelines
Shield, is a kind of significant public utility.But the pipe gallery construction period of current cast in situs is longer, when construction, can be to city
City's traffic and resident living affect, these problems limit pipe gallery in old town and people to a certain extent
The further genralrlization of mouth dense urban centers uses.
At present, it is many country all using it is prefabricated as technology development an important symbol, using prefabricated component not only
Construction quality can be improved, can also shorten the construction period, reduce cost, improves the industrialization degree of engineering construction, especially to improving
The construction environment of municipal works is even more obvious.There are certain research and application, its mesh in terms of engineering prefabricating technique both at home and abroad
Be to improve the quality of structure, reduce the construction cost of material consumption and engineering.Although the country is to pipe gallery assembled knot
Structure has certain research, but the research to pipe gallery fabricated construction is still in infancy, waterproof, rigidity and shearing strength
Aspect is also at the experiment stage of fumbling, and current referential engineering experience is less.
Such as Chinese patent CN204753627U discloses a kind of prefabricated pipe gallery, its composition includes：Prefabricated panel,
One group of outer surbase is provided with the prefabricated panel, the outer surbase is connected with precast facade, the prefabricated bottom
Be connected with one group of prefabricated interior wall in the middle part of plate, the top of the top of the precast facade and the prefabricated interior wall with prefabricated top
Plate connects.
But its structure and materials can find out to be still the traditional approach such as steel and concreting from above-mentioned file,
Still it is difficult to the requirement for meeting prefabricated component, that is, still results in that the duration is longer, cost is higher.
The content of the invention
For above-mentioned deficiency of the prior art, the present invention substitutes traditional steel by fiberglass and pours the side of combination
Formula, and carry out exquisite design to crucial connecting portion, the one kind proved by many experiments can quick assemblings, of low cost
And the pipe gallery with high intensity, high waterproof and high shear strength.
To realize above technical purpose, the technical scheme is that:A kind of pipe gallery, including glass steel top plate,
Glass steel pedestal, the glass steel top plate include top plate body and supporting item, the top plate body for " bow " shape and with branch
Support member is an integral molding structure, the glass steel top plate and the removable connection of glass steel pedestal.
Preferably, the glass steel pedestal includes pedestal one and pedestal two, the pedestal one and pedestal two are removable
Connection.
Preferably, the glass steel top plate refers to the glass steel pedestal with the removable connection of glass steel pedestal
Equipped with card slot, the supporting item is equipped with fixture block, and the supporting item is clamped by the card slot of fixture block and glass steel pedestal.
Preferably, the inner wall of the card slot is equipped with the steel spacer layer one that surface is rough surface, the fixture block surface
It also is provided with the steel spacer layer two that surface is rough surface.
Preferably, the fixture block is the slope surface of taper type and frustum and the angle of vertical plane is 15 degree to 35 degree, it is described
Block fast height for 10-30 centimetres.
Preferably, further including rivet one, the rivet one sequentially passes through fast card slot, card, steel spacer layer one and steel
Spacer layer two rivets supporting item and glass steel pedestal.
Preferably, the pedestal one refers to further include the horizontal anchor plate of glass steel, riveting with the removable connection of pedestal two
Nail two, the pedestal one and pedestal two are equipped with the groove for being used for placing the horizontal anchor plate of glass steel, the glass steel water
Flat anchor plate is clamped by groove and pedestal one and pedestal two, while rivet two passes through the horizontal anchor plate of glass steel, pedestal one
By pedestal one and pedestal two, anchor plate horizontal with glass steel rivets respectively with pedestal two.
Preferably, the pedestal one and the edge of pedestal two are additionally provided with wedge-shaped impression, the wedge-shaped recess with
Angle C is formed between horizontal plane.
Preferably, the angle C is 10-30 degree.
Preferably, the corner of the glass steel pedestal is additionally provided with armpit angle.
From the above, it can be seen that the present invention possesses advantages below：The present invention is prefabricated by using fiberglass production
Part, including glass steel top plate and glass steel pedestal, in combination with the riveting method of rivet, greatly reduce from consumptive material
Cost, while the dress between assembly method between glass steel top plate and glass steel pedestal and pedestal one and pedestal two
Get, can whether reach from water proofing property, rigidity and shearing strength or even super by substantial amounts of experiment with mode
Cross the mode of traditional steel and concreting, at the same from assembly method by way of prefabricated component not only for production,
Production cost, cost of transportation were both greatly saved for transport and construction to also a saving construction period at the same time, reduce construction
Difficulty, while also substantially increase the adaptability of construction site.
Brief description of the drawings
Fig. 1 is the structure diagram of the pipe gallery of the present invention；
Fig. 2 is the structure diagram of the pipe gallery of the present invention；
Fig. 3 is the structure diagram of the pipe gallery of the present invention；
Fig. 4 is the structure enlargement diagram of the A of the pipe gallery of the present invention；
Fig. 5 is the structure enlargement diagram of the B of the pipe gallery of the present invention；
Fig. 6 is the structure enlargement diagram of the D of the pipe gallery of the present invention.
Brief description of the drawings：1st, glass steel top plate, 11, top plate body, 12, supporting item, 2, glass steel pedestal, 21, pedestal
One, 22, pedestal two, 23, card slot, 24, fixture block, 25, steel spacer layer one, 26, steel spacer layer two, 27, rivet one, 28, glass
The horizontal anchor plate of glass steel, 29, rivet two, 210, armpit angle, 211, outer wall, 212, inner wall, 213, reinforcing rib.
Embodiment
As shown in drawings, a kind of pipe gallery, including glass steel top plate 1, glass steel pedestal 2, the glass steel
Top plate 1 includes top plate body 11 and supporting item 12, and the top plate body 11 is integrally formed knot for " bow " shape and with supporting item 12
Structure, the glass steel top plate 1 and the 2 removable connection of glass steel pedestal；The glass steel pedestal 2 includes one 21 He of pedestal
Pedestal 2 22, the pedestal 1 and 2 22 removable connection of pedestal；The glass steel top plate 1 can with glass steel pedestal 2
Tear formula connection open and refer to that the glass steel pedestal 2 is equipped with card slot 23, the supporting item 12 is equipped with fixture block 24, the supporting item 12
It is clamped by fixture block 24 and the card slot 23 of glass steel pedestal 2；The inner wall of the card slot 23 is equipped with the steel that surface is rough surface
Gasket layer 1,24 surface of fixture block also are provided with the steel spacer layer 2 26 that surface is rough surface；The fixture block 24 is cone
The angle of the slope surface and vertical plane of platform shape and frustum is 15 degree to 35 degree, and the fast height of the card is 10-30 centimetres；Further include riveting
1 are followed closely, the rivet 1 sequentially passes through card slot 23, blocks fast 24, steel spacer layer 1 and steel spacer layer 2 26 by support
Part 12 is riveted with glass steel pedestal 2；The pedestal 1 refers to further include glass steel water with the removable connection of pedestal 2 22
Flat anchor plate 28, rivet 2 29, the pedestal 1 and pedestal 2 22, which are equipped with, to be used to place the horizontal anchor plate 28 of glass steel
Groove, the horizontal anchor plate 28 of glass steel is clamped by groove and pedestal 1 and pedestal 2 22, while rivet 2 29
Through the horizontal anchor plate 28 of glass steel, pedestal 1 and pedestal 2 22 by pedestal 1 and pedestal 2 22 respectively with glass steel
Horizontal anchor plate 28 rivets；The pedestal 1 and the edge of pedestal 2 22 are additionally provided with wedge-shaped impression 23, the wedge shape
Angle C is formed between depression 23 and horizontal plane；The angle C is 10-30 degree；The corner of the glass steel pedestal 2 also sets
There is armpit angle 210.
When it is implemented, in order to ensure the rigidity and applicability of its glass steel top plate 1, its thickness control is at least 30 lis
Rice is thick, while the bottom thickness of glass steel pedestal 2 is also at least 30 cm thicks, and supporting item 12 and glass steel pedestal 2
Vertical portion using hollow out shape structure as shown in Figure 6, including outer wall 211, inner wall 212 and reinforcing rib 213, while institute
The thickness for stating outer wall 211 and inner wall 212 is controlled at least 4 centimetres, and the spacing between outer wall 211 and inner wall 212 is controlled extremely
It is 22 centimetres few, while the spacing between adjacent said rib 213, at least at 45 centimetres, such design can be whole comprehensive in guarantee
Close piping lane weight it is most light in the case of, intensity, rigidity and shearing strength can reach very high degree.
Strength demand when at the same time in order to meet to construct on the spot, and on the premise of using glass steel material, application
People has found that connection mode, glass steel pedestal between glass steel top plate 1 and glass steel pedestal 2 are by many experiments
Using the connection mode between integral structure or split structure and pedestal 1 and pedestal 2 22 these problems its
It is unusual difficulty in fact, reason is not only to need to resist external hard plastic soil for pipe using pipe gallery made of fiberglass
Pressure of corridor etc., will also ensure the resistance to deformation degree of whole piping lane, once deforming for whole engineering occurs in piping lane
Can be that extremely unstable factor even causes the leakage of gas piping, electric wire, sewer pipe even to explode.
First have to ensure cannot bending for glass steel pedestal in design, but had out using the structure of integral type
The risk now deformed, particularly after the width of glass steel pedestal reaches one fixed width, whole glass steel pedestal can become
Flesh must be compared, warpage easily occur, so the structure of multisection type must be used, but for the structure of multisection type then more
Trouble, reason is that the node possibilities that occur deforming and damage also bigger more, so for pedestal 1 and pedestal
For connection mode between 2 22, applicant is had found only by connection side as representative of the present invention by substantial amounts of experiment
On the one hand formula, the benefit of such connection mode are different construction sites, the thickness of the horizontal anchor plate 28 of glass steel and
The length of rivet 2 29 can be adjusted as needed, and the level height of the horizontal anchor plate 28 of glass steel can exceed pedestal one
21 and the level height of pedestal 2 22, while the wedge-shaped impression on pedestal 1 and pedestal 2 22 and the horizontal anchor plate of glass steel
The isosceles triangle or equilateral triangle formed between 28 can with exterior one very strong confrontation of pressure initiation, it is this
It is non-that confrontation allows whole pedestal 1, pedestal 2 22 and the horizontal anchor plate 28 of glass steel to bear in all directions
The drag of Chang Qiang can also keep stable at the same time.
Similarly, for glass steel top plate 1 and glass steel pedestal 2, resist soil cutting intensity and downwards
Pressure be also that variation occurs, so glass steel top plate 1 describes to adopt as already mentioned with peeling off steel pedestal 2 structure of itself
With hollow type glass steel structure, while reinforcing rib 213 also is provided with armpit angle between outer wall 211 and inner wall 212 respectively；In order to protect
Loosening is occurred without between card glass steel top plate 1 and glass steel pedestal 2, applicant is also by substantial amounts of experiment, passes through reality
Connection mode of the present invention tested for glass steel top plate 1 and glass steel pedestal 2.
In conclusion the prefabricated component that the present invention is produced by using fiberglass, including glass steel top plate and glass steel
Pedestal, in combination with the riveting method of rivet, greatly reduces cost from consumptive material, while in glass steel top plate and glass
The assembly method between assembly method and pedestal one and pedestal two between steel pedestal is got by substantial amounts of experiment,
Whether the side of traditional steel and concreting can be met or exceeded from water proofing property, rigidity and shearing strength
Formula, while both greatly saved not only for for production, transport and construction by way of prefabricated component from assembly method
Production cost, cost of transportation also a saving construction period, reduce difficulty of construction at the same time, while also substantially increase construction site
Adaptability.
Above to the present invention and embodiments thereof be described, this describe it is no restricted, shown in attached drawing also only
It is one of embodiments of the present invention, actual structure is not limited thereto.All in all if the ordinary skill people of this area
Member is enlightened by it, without departing from the spirit of the invention, is not inventively designed similar to the technical solution
Frame mode and embodiment, be within the scope of protection of the invention.
Claims (10)
- A kind of 1. pipe gallery, it is characterised in that：Including glass steel top plate (1), glass steel pedestal (2), the fiberglass Top plate (1) processed includes top plate body (11) and supporting item (12), the top plate body (11) for " bow " shape and with supporting item (12) It is an integral molding structure, the glass steel top plate (1) and glass steel pedestal (2) removable connection.
- 2. pipe gallery according to claim 1, it is characterised in that：The glass steel pedestal (2) includes pedestal one (21) and pedestal two (22), the pedestal one (21) and the removable connection of pedestal two (22).
- 3. pipe gallery according to claim 1, it is characterised in that：The glass steel top plate (1) and glass steel base The removable connection of seat (2) refers to that the glass steel pedestal (2) is equipped with card slot (23), and the supporting item (12) is equipped with fixture block (24), the supporting item (12) is clamped by the card slot (23) of fixture block (24) and glass steel pedestal (2).
- 4. pipe gallery according to claim 3, it is characterised in that：The inner wall of the card slot (23) is thick equipped with surface The steel spacer layer one (25) of matte, fixture block (24) surface also are provided with the steel spacer layer two (26) that surface is rough surface.
- 5. pipe gallery according to claim 3, it is characterised in that：The fixture block (24) is the slope surface of taper type and frustum Angle with vertical plane is 15 degree to 35 degree, and the fast height of the card is 10-30 centimetres.
- 6. the pipe gallery according to claim 1 or 4, it is characterised in that：Further include rivet one (27), the rivet one (27) card slot (23), card fast (24), steel spacer layer one (25) and steel spacer layer two (26) are sequentially passed through by supporting item (12) Riveted with glass steel pedestal (2).
- 7. pipe gallery according to claim 2, it is characterised in that：The pedestal one (21) and pedestal two (22) are removable Connection refers to further include the horizontal anchor plate of glass steel (28), rivet two (29), on the pedestal one (21) and pedestal two (22) Equipped with the groove for placing the horizontal anchor plate of glass steel (28), the horizontal anchor plate of glass steel (28) by groove with Pedestal one (21) and pedestal two (22) clamping, while rivet two (29) passes through the horizontal anchor plate of glass steel (28), pedestal one (21) pedestal one (21) and pedestal two (22) are riveted with the horizontal anchor plate of glass steel (28) respectively with pedestal two (22).
- 8. pipe gallery according to claim 7, it is characterised in that：The pedestal one (21) and the side of pedestal two (22) Wedge-shaped impression (23) is additionally provided with angle, the wedge-shaped recess (23) forms angle C between horizontal plane.
- 9. pipe gallery according to claim 8, it is characterised in that：The angle C is 10-30 degree.
- 10. pipe gallery according to claim 1, it is characterised in that：The corner of the glass steel pedestal (2) also sets There is armpit angle (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610930010.4A CN108005108A (en) | 2016-10-31 | 2016-10-31 | Pipe gallery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610930010.4A CN108005108A (en) | 2016-10-31 | 2016-10-31 | Pipe gallery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108005108A true CN108005108A (en) | 2018-05-08 |
Family
ID=62047703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610930010.4A Pending CN108005108A (en) | 2016-10-31 | 2016-10-31 | Pipe gallery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005108A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1096286A (en) * | 1996-09-24 | 1998-04-14 | Asahi Chem Ind Co Ltd | Structure of porch or terrace |
| CN102322077A (en) * | 2011-07-19 | 2012-01-18 | 中交第一航务工程局有限公司 | Construction method of plastic draining plate type diversion reduced pressure impermeable body structure |
| CN204151824U (en) * | 2014-10-14 | 2015-02-11 | 四川全丰新材料科技有限公司 | A kind of glass reinforced plastic underground comprehensive pipe network common trench |
| CN104947709A (en) * | 2015-04-15 | 2015-09-30 | 上海市政工程设计研究总院（集团）有限公司 | Pre-assembled single-compartment municipal tunnel and construction method thereof |
| CN104988947A (en) * | 2015-06-11 | 2015-10-21 | 华北水利水电大学 | Hydraulic engineering retaining wall |
| CN106049948A (en) * | 2016-06-29 | 2016-10-26 | 河南工业大学 | Insertion groove type underground barn with internally covered plastics and prefabricated barn wall |
| CN206157767U (en) * | 2016-10-31 | 2017-05-10 | 储力军 | Utility tunnel |
-
2016
- 2016-10-31 CN CN201610930010.4A patent/CN108005108A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1096286A (en) * | 1996-09-24 | 1998-04-14 | Asahi Chem Ind Co Ltd | Structure of porch or terrace |
| CN102322077A (en) * | 2011-07-19 | 2012-01-18 | 中交第一航务工程局有限公司 | Construction method of plastic draining plate type diversion reduced pressure impermeable body structure |
| CN204151824U (en) * | 2014-10-14 | 2015-02-11 | 四川全丰新材料科技有限公司 | A kind of glass reinforced plastic underground comprehensive pipe network common trench |
| CN104947709A (en) * | 2015-04-15 | 2015-09-30 | 上海市政工程设计研究总院（集团）有限公司 | Pre-assembled single-compartment municipal tunnel and construction method thereof |
| CN104988947A (en) * | 2015-06-11 | 2015-10-21 | 华北水利水电大学 | Hydraulic engineering retaining wall |
| CN106049948A (en) * | 2016-06-29 | 2016-10-26 | 河南工业大学 | Insertion groove type underground barn with internally covered plastics and prefabricated barn wall |
| CN206157767U (en) * | 2016-10-31 | 2017-05-10 | 储力军 | Utility tunnel |
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Application publication date: 20180508 |