CN113175337A - Steel pipe concrete energy-absorbing yielding device, high-strength yielding arch frame and working method of high-strength yielding arch frame - Google Patents
Steel pipe concrete energy-absorbing yielding device, high-strength yielding arch frame and working method of high-strength yielding arch frame Download PDFInfo
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- CN113175337A CN113175337A CN202110648045.XA CN202110648045A CN113175337A CN 113175337 A CN113175337 A CN 113175337A CN 202110648045 A CN202110648045 A CN 202110648045A CN 113175337 A CN113175337 A CN 113175337A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 239000004567 concrete Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000011381 foam concrete Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides a concrete filled steel tube energy-absorbing yielding device, a high-strength yielding arch frame and a working method thereof. The invention has reasonable design and simple structure, realizes yielding through the deformation of the yielding device, effectively solves the problem that the concrete filled steel tube and the arch center cannot yield in deep support, ensures that the support structure is stable for a long time under the action of high stress and disturbance load, and relieves the structural damage caused by adverse stress conditions.
Description
Technical Field
The invention relates to a concrete filled steel tube energy-absorbing yielding device, a high-strength yielding arch frame and a working method thereof.
Background
Along with the development of underground engineering in China towards high buried depth and large section, the surrounding rock stability of underground space is increasingly poor, the difficulty of engineering support is also increasingly prominent, and the method becomes an important problem influencing the safe construction of the underground engineering and the safe and efficient production of coal in China. The steel tube concrete arch frame has high bearing capacity and simple construction, and becomes a support measure widely adopted by deep soft rock chambers and other large-deformation underground spaces.
However, joint sleeves without a yielding function are generally used in engineering to assemble the steel pipe concrete arch centering, all sections of the arch centering are rigidly connected, the arch centering has no yielding property, the steel pipe concrete arch centering can only resist the surrounding rock load under the action of high stress or dynamic pressure, and once the load exceeds the limit, the arch centering is easy to damage.
In summary, the prior art still lacks an effective solution to the problem that rigid connection of the arch frame easily causes damage to the arch frame.
Disclosure of Invention
The invention improves the problems, namely the technical problem to be solved by the invention is to provide a concrete-filled steel tube energy-absorbing yielding device, a high-strength yielding arch center and a working method thereof.
The concrete embodiment of the invention is formed by comprising an outer joint sleeve and arch structure bodies positioned inside two ends of the outer joint sleeve, wherein a pressure yielding device is arranged between the two arch structure bodies and used for enabling the pressure yielding device to deform under stress so as to enable one of the arch structure bodies to displace to realize pressure yielding.
Further, let pressure equipment including piston body, interior sleeve pipe, outer tube and the first steel sheet that from top to bottom sets gradually, the diameter and the outside of piston body connector sleeve inside diameter looks adaptation, interior sleeve pipe upper end is fixed at piston body below middle part, interior sleeve pipe external diameter is less than the outer tube internal diameter, the outer tube includes reducing section A and constant diameter section, reducing section A's internal diameter is followed reducing section length direction and is shrunk gradually, and the internal diameter of constant diameter section is unchangeable and the external diameter of constant diameter section and outside connector sleeve's internal diameter phase-match, first steel sheet links firmly with outside connector sleeve, the constant diameter section is fixed at first steel sheet middle part.
Further, the outer tube can also include rough diameter section, reducing section B and thin diameter section, the internal diameter of reducing section shrinks gradually along reducing section length direction, the external diameter of rough diameter section and the biggest external diameter phase-match of reducing section B, the minimum external diameter of reducing section B and the external diameter phase-match of thin diameter section, the external diameter, the internal diameter of rough diameter section and thin diameter section all keep unchangeable, the rough diameter section cooperatees with the internal diameter of outside joint loop bar, the center of thin diameter section and first steel sheet links firmly.
Furthermore, let the pressure equipment and include piston body, filling bag and the first steel sheet that from top to bottom sets gradually, the diameter of piston body and outside adapter sleeve's internal diameter looks adaptation, first steel sheet is fixed inside outside adapter sleeve, the inside compressible material layer that is provided with of filling bag.
Further, the compressible material layer is foam concrete or metal mesh.
Furthermore, end reinforcing rings are arranged outside two ends of the outer joint sleeve.
Furthermore, the outer side of the end part of the inner sleeve is provided with a necking section which is used for facilitating the starting plastic deformation of the inner sleeve after the inner sleeve is connected with the outer sleeve.
Furthermore, high-strength yielding arch centering comprises an annular body consisting of a plurality of arch centering structural bodies, a plurality of outside joint sleeves and a plurality of yielding devices, wherein the arch centering structural bodies and the outside joint sleeves are arranged in a staggered mode.
Further, the arch structure is arc-shaped.
Further, a concrete filled steel tube energy-absorbing yielding device and a high-strength yielding arch center working method comprises the following steps: (1) pouring concrete into the arch frame, and after the concrete pouring is finished and the curing is finished, manufacturing an arch frame structure body; (2) splicing and encircling a plurality of arch frame structural bodies and the outer joint sleeve into an annular body, wherein the end part of each arch frame structural body extends into the outer joint sleeve and a set length to ensure that the arch frame structural body is not easy to fall off, and each pressure yielding device is arranged in the outer joint sleeve; (3) after the arch frame structure body is stressed and exceeds the force required by the set deformation of the pressure yielding device, the arch frame structure body contracts, the volume of the pressure yielding device is reduced, the arch frame structure body is compressed in a displacement mode, and the buffer protection effect is achieved on the arch frame structure body.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the steel pipe concrete energy-absorbing pressure-yielding device, when the stress of the arch frame exceeds a certain degree, the arch frame structure body (steel pipe concrete) energy-absorbing pressure-yielding device deforms to achieve pressure yielding, the problem that the steel pipe concrete and the arch frame cannot yield in deep support can be effectively solved, the support structure is guaranteed to be stable for a long time under the action of high stress and disturbance load, and structural damage caused by adverse stress conditions is relieved;
(2) the high-strength yielding arch center of the device has good yielding performance, and can realize yielding deformation and moderate yielding by the arch center, thereby being beneficial to reducing the surrounding rock load acting on the arch center, prolonging the service life of the arch center and being more beneficial to protecting the stability of a supporting body.
Drawings
Fig. 1 is a schematic structural diagram of a yielding device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second yielding device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third yielding device according to an embodiment of the present invention;
FIG. 4 is a schematic view of an initial structure of a high-strength yielding arch according to an embodiment of the present invention;
fig. 5 is a schematic structural view of the high-strength yielding arch after compression according to the embodiment of the invention.
In the figure: 1-an arch frame structure body, 2-an outer side joint sleeve, 3-a yielding device, 3 a-a piston body, 3 b-an inner sleeve, 3 c-an outer sleeve, 3 d-a first steel plate and 3 f-a filling bag.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example (b): referring to the attached drawings, the energy-absorbing yielding device for the concrete filled steel tube comprises an outer joint sleeve 2 and arch frame structural bodies 1 located inside two ends of the outer joint sleeve, wherein the end parts of the outer joint sleeve wrap the end parts of the arch frame structural bodies, a yielding device 3 is arranged between the two arch frame structural bodies and located inside the outer joint sleeve, and the yielding device is used for enabling the yielding device to deform under stress to enable one of the arch frame structural bodies to move to achieve yielding.
The outer side joint sleeve is an arc-shaped pipe, and the length of the outer side joint sleeve is larger than that of the yielding device.
In the first embodiment of the present invention, as shown in fig. 1, the pressure relieving device includes a piston body 3a, an inner sleeve 3b, an outer sleeve 3c, and a first steel plate 3d, which are sequentially disposed from top to bottom, a diameter of the piston body is adapted to an inner diameter of the outer joint sleeve, an upper end of the inner sleeve is fixed in a middle portion below the piston body, an outer diameter of the inner sleeve is smaller than an inner diameter of the outer sleeve, the outer sleeve includes a reducing section a and an equal-diameter section, an inner diameter of the reducing section a gradually shrinks along a length direction of the reducing section, an inner diameter of the equal-diameter section does not change, an outer diameter of the equal-diameter section matches with an inner diameter of the outer joint sleeve, the first steel plate is fixedly connected to the outer joint sleeve, and the equal-diameter section is fixedly connected to a middle portion of the first steel plate.
The first steel plate is circular, and the diameter of the first steel plate is matched with the inner diameter of the outer joint sleeve; the piston body is also a round steel plate; the outer sleeve is a section of arc high-strength hollow steel pipe; the inner sleeve is a section of arc-shaped hollow steel pipe, and the outer diameter of the inner sleeve is larger than the inner diameter of the outer sleeve; the length of the inner sleeve is matched with that of the outer sleeve, so that plastic deformation is facilitated, and the sufficient yielding length is provided.
After the arch structure body is stressed to exceed the force required by the set deformation of the yielding device, because the elastic modulus of the outer sleeve is greater than that of the inner sleeve, the inner sleeve is plastically deformed, the inner diameter is reduced, the inner sleeve is extruded into the outer sleeve, the joint of the arch structure body is displaced along with the inner sleeve, and the arch structure body is protected.
In the second embodiment of the present invention, as shown in fig. 2, the yielding device includes a piston body, an inner sleeve, an outer sleeve, and a first steel plate, which are sequentially arranged from top to bottom, wherein a diameter of the piston body is adapted to an inner diameter of the outer joint sleeve, an upper end of the inner sleeve is fixed at a middle portion below the piston body, an outer diameter of the inner sleeve is smaller than an inner diameter of the outer sleeve, the outer sleeve further includes a large diameter section, a reduced diameter section B, and a small diameter section, an inner diameter of the reduced diameter section gradually shrinks along a length direction of the reduced diameter section, an outer diameter of the large diameter section is matched with a maximum outer diameter of the reduced diameter section B, a minimum outer diameter of the reduced diameter section B is matched with an outer diameter of the small diameter section, outer diameters and inner diameters of the large diameter section and the small diameter section are both kept unchanged, the large diameter section is matched with an inner diameter of the outer joint.
The first steel plate is a round steel plate; the piston body is also a round steel plate; the outer sleeve is a section of arc hollow steel pipe; the inner sleeve can be a section of arc solid round steel, and the diameter of the inner sleeve is larger than the inner diameter of the small-diameter section of the outer sleeve.
After the stress of the steel pipe concrete exceeds the force required by the set deformation of the pressure yielding device, the elastic modulus of the inner sleeve is greater than that of the outer sleeve, the outer sleeve is plastically deformed, the inner diameter is increased, the inner sleeve is extruded into the outer sleeve, the joint of the steel pipe concrete is displaced along with the inner sleeve, and the steel pipe concrete is protected.
In the third embodiment of the present invention, as shown in fig. 3, the pressure relief device includes a piston body 3a, a filling bag 3f and a first steel plate 3d, which are sequentially arranged from top to bottom, the diameter of the piston body is adapted to the inner diameter of the outer joint sleeve, the first steel plate is fixed inside the outer joint sleeve, and a compressible material layer is filled inside the filling bag.
The compressible material layer is made of foam concrete or metal mesh.
The first steel plate is a round steel plate; the piston body is also a round steel plate;
after the stress of the steel pipe concrete exceeds the force required by the set deformation of the pressure yielding device, the metal mesh is extruded, the volume is reduced, the joint of the steel pipe concrete is displaced along with the metal mesh, and the steel pipe concrete is protected.
In the embodiment, the end head reinforcing rings 4 are arranged outside the two ends of the outer joint sleeve; the end head reinforcing ring is tightly sleeved on the end head of the outer joint sleeve. The end reinforcing ring enhances the restraint force of the pipe end and can prevent the concrete filled steel tube from deforming under stress and falling off from the joint.
In this embodiment, the outer side of the end of the inner sleeve is provided with a necking section for facilitating the start of plastic deformation of the inner sleeve after the inner sleeve is connected with the outer sleeve.
In the fourth embodiment of the present invention, as shown in fig. 4 and 5, the high-strength yielding arch includes an annular body composed of 4 arch structure bodies, 4 outer joint casings, and 4 yielding devices, and the arch structure bodies and the outer joint casings are arranged in a staggered manner.
The pressure yielding device adopts any one of the first embodiment, the second embodiment and the third embodiment.
The arch truss structure is arc-shaped and is a concrete pipe prefabricated in an arc shape.
The high-strength yielding arch center adopts a construction method of pouring concrete firstly and then erecting the arch center, and after the concrete pouring and the curing are finished, the existing arch center is placed into the energy-absorbing yielding device to erect the arch center.
It is worth to be noted here that concrete is poured into the arch centering firstly, after the concrete pouring and the curing are finished, the existing arch centering is placed into the energy-absorbing yielding device, and two ends of the arch centering structure body extend into the outer joint sleeve and extend to a set length, so that the deformed arch centering steel pipe of the arch centering is ensured not to fall off. The number of the pressure yielding devices is changed according to the actual requirement. After the arch frame is stressed and exceeds the force required by the set deformation of the pressure yielding device, the volume of the pressure yielding device is reduced, and the arch frame is compressed.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a steel pipe concrete energy-absorbing lets pressure device which characterized in that, includes outside joint sleeve pipe and is located the inside bow member structure body in outside joint sleeve pipe both ends, is provided with between two bow member structures and lets pressure device for let pressure device atress warp and make one of them bow member structure body displacement realize letting press.
2. The energy-absorbing pressure-yielding device for the steel pipe concrete according to claim 1, characterized in that the pressure-yielding device comprises a piston body, an inner sleeve, an outer sleeve and a first steel plate which are sequentially arranged from top to bottom, the diameter of the piston body is matched with the inner diameter of the outer joint sleeve, the upper end of the inner sleeve is fixed in the middle of the lower portion of the piston body, the outer diameter of the inner sleeve is smaller than the inner diameter of the outer sleeve, the outer sleeve comprises a diameter-changing section A and an equal-diameter section, the inner diameter of the diameter-changing section A gradually shrinks along the length direction of the diameter-changing section, the outer diameter of the equal-diameter section is unchanged, the outer diameter of the equal-diameter section is matched with the inner diameter of the outer joint sleeve, the first steel plate is fixedly connected with the outer.
3. The energy-absorbing and pressure-yielding device for the concrete-filled steel tube of claim 2, wherein the outer sleeve further comprises a large diameter section, a variable diameter section B and a small diameter section, the inner diameter of the variable diameter section gradually shrinks along the length direction of the variable diameter section, the outer diameter of the large diameter section is matched with the maximum outer diameter of the variable diameter section B, the minimum outer diameter of the variable diameter section B is matched with the outer diameter of the small diameter section, the outer diameter and the inner diameter of the large diameter section and the small diameter section are kept unchanged, the large diameter section is matched with the inner diameter of the outer joint sleeve rod, and the small diameter section is fixedly connected with the center of the first steel plate.
4. The concrete-filled steel tube energy-absorbing yielding device of claim 1, wherein the yielding device comprises a piston body, a filling bag and a first steel plate which are sequentially arranged from top to bottom, the diameter of the piston body is matched with the inner diameter of the outer joint sleeve, the first steel plate is fixed inside the outer joint sleeve, and a compressible material layer is arranged inside the filling bag.
5. The concrete-filled steel tube energy-absorbing and pressure-yielding device as claimed in claim 4, wherein the compressible material layer is foam concrete or metal mesh.
6. The concrete-filled steel tube energy-absorbing yielding device as claimed in claim 1, wherein end reinforcement rings are arranged outside two ends of the outer joint sleeve.
7. An energy-absorbing and pressure-yielding device for concrete filled steel tubes as claimed in any one of claims 2 to 4, wherein a necking section is arranged on the outer side of the end of the inner sleeve tube for facilitating the start of plastic deformation of the inner sleeve tube after the end of the inner sleeve tube is connected with the outer sleeve tube.
8. A high-strength yielding arch according to claim 1, wherein the high-strength yielding arch comprises an annular body consisting of a plurality of arch structure bodies, a plurality of outer joint sleeves and a plurality of yielding devices, and the arch structure bodies and the outer joint sleeves are arranged in a staggered manner.
9. A high yield arch according to claim 8, wherein the arch structure is curved.
10. The working method of the concrete filled steel tube energy-absorbing yielding device and the high-strength yielding arch center according to claim 1 comprises the following steps: (1) pouring concrete into the arch frame, and after the concrete pouring is finished and the curing is finished, manufacturing an arch frame structure body; (2) splicing and encircling a plurality of arch frame structural bodies and the outer joint sleeve into an annular body, wherein the end part of each arch frame structural body extends into the outer joint sleeve and a set length to ensure that the arch frame structural body is not easy to fall off, and each pressure yielding device is arranged in the outer joint sleeve; (3) after the arch frame structure body is stressed and exceeds the force required by the set deformation of the pressure yielding device, the arch frame structure body contracts, the volume of the pressure yielding device is reduced, the arch frame structure body is compressed in a displacement mode, and the buffer protection effect is achieved on the arch frame structure body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648045.XA CN113175337A (en) | 2021-06-10 | 2021-06-10 | Steel pipe concrete energy-absorbing yielding device, high-strength yielding arch frame and working method of high-strength yielding arch frame |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648045.XA CN113175337A (en) | 2021-06-10 | 2021-06-10 | Steel pipe concrete energy-absorbing yielding device, high-strength yielding arch frame and working method of high-strength yielding arch frame |
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| CN113175337A true CN113175337A (en) | 2021-07-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922663A (en) * | 2022-05-23 | 2022-08-19 | 石家庄铁道大学 | Progressive multi-stage yielding support device for large-deformation tunnel |
| IT202200009266A1 (en) * | 2022-05-05 | 2023-11-05 | Officine Maccaferri Italia S R L | Device for compensating the length of a rib |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2069027A (en) * | 1980-02-06 | 1981-08-19 | Kloeckner Werke Ag | Telescoping under pressure roof-support system for underground roadways or mines |
| US4443134A (en) * | 1980-07-16 | 1984-04-17 | Klockner-Werke Aktiengesellschaft | Yieldable roof support for mine passages and the like |
| JP2000303797A (en) * | 1999-04-19 | 2000-10-31 | Kfc Ltd | Timbering joint and timbering structure using the same |
| CN104818997A (en) * | 2015-04-28 | 2015-08-05 | 中铁工程设计咨询集团有限公司 | Prefabricated lagging jack primary support structure inside tunnel and preparation method thereof |
| CN207598263U (en) * | 2017-11-27 | 2018-07-10 | 四川省交通运输厅公路规划勘察设计研究院 | The hydraulic pressure of Tunnel can contracting formula steelframe |
| CN108397216A (en) * | 2018-05-14 | 2018-08-14 | 山东建筑大学 | A kind of concrete filled steel tube arch can contracting formula connector and arch |
| CN216741561U (en) * | 2021-06-10 | 2022-06-14 | 福州大学 | Steel pipe concrete energy-absorbing lets pressure device |
-
2021
- 2021-06-10 CN CN202110648045.XA patent/CN113175337A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2069027A (en) * | 1980-02-06 | 1981-08-19 | Kloeckner Werke Ag | Telescoping under pressure roof-support system for underground roadways or mines |
| US4443134A (en) * | 1980-07-16 | 1984-04-17 | Klockner-Werke Aktiengesellschaft | Yieldable roof support for mine passages and the like |
| JP2000303797A (en) * | 1999-04-19 | 2000-10-31 | Kfc Ltd | Timbering joint and timbering structure using the same |
| CN104818997A (en) * | 2015-04-28 | 2015-08-05 | 中铁工程设计咨询集团有限公司 | Prefabricated lagging jack primary support structure inside tunnel and preparation method thereof |
| CN207598263U (en) * | 2017-11-27 | 2018-07-10 | 四川省交通运输厅公路规划勘察设计研究院 | The hydraulic pressure of Tunnel can contracting formula steelframe |
| CN108397216A (en) * | 2018-05-14 | 2018-08-14 | 山东建筑大学 | A kind of concrete filled steel tube arch can contracting formula connector and arch |
| CN216741561U (en) * | 2021-06-10 | 2022-06-14 | 福州大学 | Steel pipe concrete energy-absorbing lets pressure device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202200009266A1 (en) * | 2022-05-05 | 2023-11-05 | Officine Maccaferri Italia S R L | Device for compensating the length of a rib |
| CN114922663A (en) * | 2022-05-23 | 2022-08-19 | 石家庄铁道大学 | Progressive multi-stage yielding support device for large-deformation tunnel |
| CN114922663B (en) * | 2022-05-23 | 2023-03-10 | 石家庄铁道大学 | Progressive multi-stage yielding support device for large-deformation tunnel |
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