CN209839370U - Steel fiber concrete pipe - Google Patents
Steel fiber concrete pipe Download PDFInfo
- Publication number
- CN209839370U CN209839370U CN201920137457.5U CN201920137457U CN209839370U CN 209839370 U CN209839370 U CN 209839370U CN 201920137457 U CN201920137457 U CN 201920137457U CN 209839370 U CN209839370 U CN 209839370U
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- steel
- concrete pipe
- net
- pipe
- socket
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- Expired - Fee Related
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Abstract
The utility model discloses a steel fiber concrete pipe, including interior steel pipe and outer concrete pipe, the inside of outer concrete pipe is equipped with steel reinforcement framework, steel reinforcement framework includes the inner frame and the outer frame of coaxial setting, the lateral surface of inner frame is provided with first fender net, the medial surface of outer frame is provided with the second and keeps off the net, the inboard of inner frame is provided with the inner steel fibre layer, the outside of outer frame is provided with the outer steel fibre layer, be concreting between inner frame and the outer frame, first fender net and second fender net adopt the glass fiber net or the nylon wire that the length of hole side is less than 5mm, first fender net and second keep off the net and include that 2-5 layers of glass fiber net or nylon wire are in the same place. The utility model discloses a micro crack on the steel fibre is intraductal outer wall with the concrete can link up in succession, has improved fissured expansion resistance, has guaranteed the integrity and the durability of steel fibre concrete pipe.
Description
Technical Field
The utility model belongs to the technical field of the technique of concrete pipe and specifically relates to a steel fibre concrete pipe is related to.
Background
The pipe-jacking technology is a trenchless tunneling type pipeline laying construction technology for municipal construction, has the advantages of no influence on the surrounding environment or smaller influence, small construction site, low noise, deep underground operation, and is an underground pipeline construction method developed after shield construction, does not need to excavate a surface layer, and can pass through roads, railways, rivers, ground buildings, underground structures, various underground pipelines and the like; in the pipe-jacking construction, by means of the thrust of the main jacking oil cylinder, the relay between pipelines and the like, the tool pipe or the heading machine is pushed from the working well through the soil layer until the tool pipe or the heading machine is hoisted in the receiving well, and meanwhile, the pipeline following the tool pipe or the heading machine is buried between the two wells, so that the construction method for laying the underground pipeline in a non-excavation manner is realized.
At present, a pressure pipeline pipe capable of being directly jacked in mainly comprises a welded steel pipe and a reinforced concrete jacking pipe, the cost of the welded steel pipe is high, an outer wall anticorrosive coating is easily rubbed and damaged, fatigue damage is easily caused by road alternating load due to the fact that the steel pipe is directly jacked in, the corrosion resistance of an inner wall is poor, welding operation is carried out on every section of steel pipe which is jacked in, the construction period is long, and the design service life of the steel pipe is generally 20 years. The reinforced concrete jacking pipe can be used when the working pressure in the pipe is low because the reinforced concrete jacking pipe has no prestress, and the reinforcement amount is very high when the working pressure reaches 0.4MPa or above, so the construction cost is high. The outer wall of the common prestressed concrete cylinder pipe is a mortar protective layer, so that the common prestressed concrete cylinder pipe is rough, uneven in thickness and generally about 30 mm, and cannot be directly used for jacking operation. At present, a common trenchless pipeline design scheme for important engineering is to firstly push a common reinforced concrete jacking pipe and then penetrate a steel pipe or a prestressed steel cylinder concrete pipe into the common reinforced concrete jacking pipe, but the scheme has the disadvantages of high manufacturing cost, inconvenient construction, long construction period and large jacking resistance, and the common reinforced concrete jacking pipe is easy to damage or crack, so that the integral structure of a pipe body is damaged, and the phenomena of leakage and corrosion are easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steel fibre concrete pipe can link up in succession through the microcrack on the steel fibre is with the concrete pipe inside and outside wall, has improved fissured expansion resistance, has guaranteed steel fibre concrete pipe's integrity and durability.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a steel fiber concrete pipe, includes interior steel pipe and outer concrete pipe, the inside of outer concrete pipe is equipped with steel reinforcement framework, steel reinforcement framework includes the inner frame and the outer skeleton of coaxial setting, the lateral surface of inner frame is provided with first fender net, the medial surface of outer skeleton is provided with the second and keeps off the net, the inboard of inner frame is provided with interior steel fiber layer, the outside of outer skeleton is provided with outer steel fiber layer, for concreting between inner frame and the outer skeleton.
Through adopting above-mentioned technical scheme, set up respectively on two skeletons of concrete pipe and keep off the net, then the inside and outside both sides of the inside of outer concrete pipe set up inside and outside steel fiber layer, keep off the net and block steel fiber layer and remove to the centre of concrete pipe, the inside and outside both sides of concrete pipe split easily, steel fiber layer only sets up the inside and outside both sides at the concrete pipe, increase and connect the continuity, when the crackle appears, can prevent the crackle from further expanding, steel fiber only sets up the position near inside and outside both sides simultaneously, can be very big save steel fiber.
The utility model discloses further set up to: the first blocking net and the second blocking net are glass fiber nets or nylon nets with hole side length smaller than 5 mm.
Through adopting above-mentioned technical scheme, keep off the net material and more common, with low costs, pour in the concrete pipe, can not destroy the structural strength of concrete pipe.
The utility model discloses further set up to: the first blocking net and the second blocking net are compounded together by 2-5 layers of glass fiber nets or nylon nets.
Through adopting above-mentioned technical scheme, when concrete pipe production processing, can be better block that steel fibre enters into between two skeletons, keep off the net simultaneously and have sufficient intensity and tear resistance, more durable.
The utility model discloses further set up to: the inner steel fiber layer and the outer steel fiber layer are internally provided with freely distributed steel fibers, the diameter of the steel fibers is 3-7mm, and the length of the steel fibers is 150-400 mm.
By adopting the technical scheme, the steel fibers are not easy to penetrate through the blocking net, the length is large, the continuity of the concrete pipe can be ensured, and the crack expansion resistance is improved.
The utility model discloses further set up to: the socket steel ring is equipped with to the one end of outer concrete pipe, the socket steel ring is located outer concrete pipe's medial surface to the inner wall diameter is greater than the diameter of interior steel pipe, the socket steel ring is equipped with to outer concrete pipe's the other end, the socket steel ring is located outer concrete pipe's lateral surface, and the outer wall diameter equals the inner wall diameter of socket steel ring.
Through adopting above-mentioned technical scheme, the concrete pipe adopts the connected mode of socket joint to connect, and connection structure is firm, and the socket joint all sets up the steel loop, and the structural strength of socket joint department is higher, avoids socket joint department cracked.
The utility model discloses further set up to: the concrete pipe mounting socket comprises a socket steel ring and an outer concrete pipe mounting socket steel ring, wherein an inner stepped groove in the circumferential direction is formed in the inner wall of one end of the outer concrete pipe mounting socket steel ring, an outer stepped groove in the circumferential direction is formed in the outer wall of one end of the outer concrete pipe mounting socket steel ring, and the socket steel ring are respectively mounted in the inner stepped groove and the outer stepped groove.
Through adopting above-mentioned technical scheme, bellmouth steel ring and socket steel ring all set up at the ladder inslot, make things convenient for the location installation of bellmouth and interface, make the diameter of concrete pipe in bellmouth department can not change, conveniently during the construction with the concrete pipe forward the top advance.
The utility model discloses further set up to: two clamping grooves are formed in the outer wall of the socket steel ring along the circumferential direction, and sealing rings are embedded in the clamping grooves.
Through adopting above-mentioned technical scheme, bell and spigot department sets up twice draw-in groove and sealing washer, has guaranteed the leakproofness and the waterproof nature of concrete pipe connection department.
The utility model discloses further set up to: the cross-sectional shape of sealing washer is the dovetail, the tip of sealing washer is towards the socket one end of outside concrete pipe, is provided with the opening towards the one end of outside concrete pipe bellmouth.
By adopting the technical scheme, the cross section of the sealing ring is in a dovetail shape, the front end of the sealing ring is an inclined plane, two concrete pipes are conveniently connected in a socket joint mode, the sealing ring has larger extrusion deformation, and the sealing performance of the socket joint is guaranteed.
To sum up, the utility model discloses a beneficial technological effect does:
1. the utility model discloses in through set up the steel fibre layer in the concrete pipe wall, make the microcrack on the concrete pipe inside and outside wall link up in succession through steel fibre, improved fissured expansion resistance, prevent that the crack from continuing to enlarge, guaranteed steel fibre concrete pipe's integrity and life.
2. The steel fiber sets up in the inside and outside both sides of concrete pipe to separate steel fiber layer and concrete pipe intermediate position through keeping off the net, use less steel fiber just can realize preventing the effect of crack enlargement, save material saves construction cost.
3. The utility model discloses the socket joint structural strength of concrete pipe is high, and is difficult cracked, and socket department seal structure deformability is strong simultaneously, can enough guarantee good leakproofness, can not obstruct the grafting of two concrete pipes again.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a concrete pipe according to the present invention.
In the figure, 1, an inner steel pipe; 2. an outer concrete pipe; 21. a socket steel ring; 22. a socket steel ring; 221. a card slot; 23. an inner stepped groove; 24. an outer stepped groove; 3. a steel reinforcement cage; 31. an inner skeleton; 32. an outer skeleton; 4. a first barrier net; 5. a second net; 6. an inner steel fiber layer; 7. an outer steel fiber layer; 8. and (5) sealing rings.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a steel fiber concrete pipe, including interior steel pipe 1, outer concrete pipe 2, framework of steel reinforcement 3, first fender net 4, second fender net 5, interior steel fiber layer 6, outer steel fiber layer 7 and sealing washer 8 isotructures. Wherein, the middle of the outer concrete pipe 2 is a pipe hole, the inner steel pipe 1 is fixed in the pipe hole, one end of the outer concrete pipe 2 is flush with the end surface of the outer concrete pipe, and the steel reinforcement framework 3, the first baffle net 4, the second baffle net 5, the inner steel fiber layer 6 and the outer steel fiber layer 7 are poured in the pipe wall of the outer concrete pipe 2.
The inside steel reinforcement cage 3 that is equipped with of pipe wall of outer concrete pipe 2, steel reinforcement cage 3 is including the inner frame 31 and the outer frame 32 of coaxial setting, and inner frame 31 and outer frame 32 are coaxial with interior steel pipe 1 again simultaneously. The laminating of inner frame 31's lateral surface is provided with first fender net 4, and first fender net 4 adopts the long glass fiber net or the nylon wire that is less than 5mm in hole limit, adopts the glass fiber net that the hole limit is 4mm in this embodiment, and first fender net 4 is compound two circles winding on inner frame 31's lateral surface, and inner frame 31's inboard is provided with interior steel fiber layer 6, is provided with the steel fibre of free distribution in the interior steel fiber layer 6, and steel fibre's diameter is 5mm, and length is 200 mm.
The second fender net 5 is arranged on the inner side face of the outer framework 32 in a pasting mode, the second fender net 5 is also made of glass fiber nets or nylon nets with hole edge lengths smaller than 5mm, the glass fiber nets with the hole edge lengths of 4mm are adopted in the embodiment, the second fender net 5 is made of two composite rings and is pasted on the outer side face of the outer framework 32, an outer steel fiber layer 7 is arranged on the outer side of the outer framework 32, steel fibers are freely distributed in the outer steel fiber layer 7, the diameter of the steel fibers is 5mm, and the length of the steel fibers is 200 mm. A gap is formed between the inner frame 31 and the outer frame 32, and concrete is poured into the gap between the inner frame 31 and the outer frame 32.
The bellmouth steel ring 21 is equipped with to outer concrete pipe 2's one end, and bellmouth steel ring 21 is located outer concrete pipe 2's medial surface, and one end is pre-buried in outer concrete pipe 2's pipe wall, and the bellmouth steel ring 21 inner wall diameter of installation is greater than the diameter of interior steel pipe 2, and outer concrete pipe 2 installation bellmouth steel ring 21's one end inner wall goes up circumference and is provided with interior ladder groove 23 of round, and bellmouth steel ring 21 imbeds in interior ladder groove 23.
The other end of outer concrete pipe 2 is equipped with socket steel loop 22, and socket steel loop 22 is located outer concrete pipe 2's lateral surface, and one end is pre-buried in outer concrete pipe 2's pipe wall, and socket steel loop 22's outer wall diameter equals the inner wall diameter of bellmouth steel loop 21, makes two adjacent concrete pipe socket end can insert the bellmouth end in, with two concrete union couplings. The outer concrete pipe 2 is provided with outer ladder groove 24 of round on the one end outer wall of socket steel ring 22, and socket steel ring 22 overlaps on outer ladder groove 24.
Two parallel clamping grooves 221 are formed in the outer wall of the socket steel ring 22 along the circumferential direction, and sealing rings 8 are embedded in the clamping grooves 221. The cross-sectional shape of sealing washer 8 is the dovetail, and the pointed end of sealing washer 8 is towards the socket terminal surface one end of outside concrete pipe 2, and the one end towards outside concrete pipe 2 bellmouth is provided with the opening.
The implementation principle of the embodiment is as follows: before the concrete pipe is poured, the steel reinforcement framework 3 is bound, then the first blocking net 4 and the second blocking net 5 are respectively welded and fixed with the inner framework 31 and the outer framework 32, the bellmouth steel ring 21 and the spigot steel ring 22 are respectively welded and fixed with the inner framework 31 and the outer framework 32, and the whole framework is placed in a pouring mold; when pouring, steel fibers are continuously put into the two sides of the steel reinforcement framework 3 along with the rising of the pouring height of the concrete until the steel fibers are poured to the top of the concrete pipe, then the mold is taken down, and the inner steel pipe 1 is sleeved in the pipe hole of the outer concrete pipe 2.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A steel fiber concrete pipe is characterized in that: including inner steel pipe (1) and outer concrete pipe (2), the inside of outer concrete pipe (2) is equipped with framework of steel reinforcement (3), framework of steel reinforcement (3) are including inner frame (31) and outer frame (32) of coaxial setting, the lateral surface of inner frame (31) is provided with first fender net (4), the medial surface of outer frame (32) is provided with the second and keeps off net (5), the inboard of inner frame (31) is provided with interior steel fibre layer (6), the outside of outer frame (32) is provided with outer steel fibre layer (7), for concreting between inner frame (31) and outer frame (32).
2. A steel fibre concrete pipe according to claim 1, characterised in that: the first blocking net (4) and the second blocking net (5) are made of glass fiber nets or nylon nets with hole edge lengths smaller than 5 mm.
3. A steel fibre concrete pipe according to claim 2, characterised in that: the first blocking net (4) and the second blocking net (5) comprise 2-5 layers of glass fiber nets or nylon nets which are compounded together.
4. A steel fibre concrete pipe according to claim 1, characterised in that: freely distributed steel fibers are arranged in the inner steel fiber layer (6) and the outer steel fiber layer (7), the diameter of the steel fibers is 3-7mm, and the length of the steel fibers is 150-400 mm.
5. A steel fibre concrete pipe according to claim 1, characterised in that: the one end of outer concrete pipe (2) is equipped with bellmouth steel loop (21), bellmouth steel loop (21) are located the medial surface of outer concrete pipe (2) to the inner wall diameter is greater than the diameter of interior steel pipe (1), socket steel loop (22) are equipped with to the other end of outer concrete pipe (2), socket steel loop (22) are located the lateral surface of outer concrete pipe (2), and the outer wall diameter equals the inner wall diameter of bellmouth steel loop (21).
6. A steel fibre concrete pipe according to claim 5, characterised in that: outer concrete pipe (2) installation bellmouth steel ring (21) one end inner wall on be provided with interior ladder groove (23) of circumference, be provided with outer ladder groove (24) of circumference on the one end outer wall of outer concrete pipe (2) installation socket steel ring (22), ladder groove (23) and outer ladder groove (24) including installing respectively in bellmouth steel ring (21) and socket steel ring (22).
7. A steel fibre concrete pipe according to claim 6, characterised in that: two clamping grooves (221) are formed in the outer wall of the socket steel ring (22) along the circumferential direction, and sealing rings (8) are embedded in the clamping grooves (221).
8. A steel fibre concrete pipe according to claim 7, characterised in that: the cross-sectional shape of sealing washer (8) is the dovetail, sealing washer (8) pointed end is towards the socket one end of outside concrete pipe (2), is provided with the opening towards the one end of outside concrete pipe (2) bellmouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920137457.5U CN209839370U (en) | 2019-01-25 | 2019-01-25 | Steel fiber concrete pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920137457.5U CN209839370U (en) | 2019-01-25 | 2019-01-25 | Steel fiber concrete pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209839370U true CN209839370U (en) | 2019-12-24 |
Family
ID=68902805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920137457.5U Expired - Fee Related CN209839370U (en) | 2019-01-25 | 2019-01-25 | Steel fiber concrete pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209839370U (en) |
-
2019
- 2019-01-25 CN CN201920137457.5U patent/CN209839370U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20210125 |