CN110905548A - Prefabricated composite lining segment - Google Patents
Prefabricated composite lining segment Download PDFInfo
- Publication number
- CN110905548A CN110905548A CN201911382312.2A CN201911382312A CN110905548A CN 110905548 A CN110905548 A CN 110905548A CN 201911382312 A CN201911382312 A CN 201911382312A CN 110905548 A CN110905548 A CN 110905548A
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- CN
- China
- Prior art keywords
- prefabricated
- lining
- masonry
- support frame
- segment
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/08—Lining with building materials with preformed concrete slabs
Abstract
The invention provides a prefabricated composite lining segment which comprises a prefabricated lining masonry, wherein a prefabricated support frame is circumferentially arranged on the outer side of the prefabricated lining masonry, the lower part of the prefabricated support frame is embedded in the prefabricated lining, and the upper part of the prefabricated support frame is higher than the upper surface of the prefabricated lining masonry. The invention has the advantages that: the prefabricated steel frame is used as a main stress system, the prefabricated lining plate is prevented from being damaged due to local uneven stress, the thickness of the prefabricated lining plate can be effectively reduced, and the prefabricated lining plate has high economy; when the prefabricated steel frame deforms under stress, the lining surface formed by the prefabricated lining plates can provide supporting force for surrounding rocks, and construction safety is improved; can assemble fast, shorten excavation face exposure time, can the batch production prefabrication, guarantee prefabricated component's quality improves the construction security, improves the construction environment.
Description
Technical Field
The invention relates to a tunnel lining segment, in particular to a prefabricated composite lining segment.
Background
At present, in the construction process of a tunnel or underground engineering, two support modes mainly comprise primary support combined secondary lining and prefabricated segment primary lining ring formation.
The primary support combines the support mode of secondary lining to lay steel frame and reinforcing mesh firstly, then seal by adopting sprayed concrete, and finally set anchor rod to form the support system. The supporting mode has the problems of long exposed time of an excavation surface, poor supporting capability, large system deformation, high safety risk, low mechanization degree, high labor intensity, severe working environment, serious material waste, difficult quality guarantee and the like. And the prefabricated pipe piece is adopted for supporting, so that the thickness of the prefabricated pipe piece needs to be greatly increased, the material usage amount is increased and the construction cost is improved in order to support an excavation surface and resist the ground stress when the tunnel or the underground engineering with poor geological conditions and large ground stress is constructed.
Disclosure of Invention
The invention provides a prefabricated composite lining segment, which solves the problems of poor supporting effect or high cost of the existing supporting mode. The excavation face can be sealed fast, construction safety is guaranteed, meanwhile, the thickness of the pipe piece is reduced, and labor intensity and construction cost are reduced.
The technical scheme of the invention is realized as follows: the utility model provides a prefabricated composite lining segment, includes prefabricated lining brickwork, the outside of prefabricated lining brickwork be equipped with the prefabricated support of circumference arrangement, the lower part of prefabricated support is buried underground in prefabricated lining is internal, the upper portion of prefabricated support is higher than the upper surface of prefabricated lining brickwork.
The prefabricated lining body comprises but is not limited to a straight plate, an arc plate and a curved plate.
The prefabricated lining brickwork block setting, the prefabricated lining brickwork of block splices the cyclization in circumference, splices into the pipe in the axial.
The precast lining body includes but is not limited to a concrete slab, a reinforced concrete slab, a prestressed concrete slab or a fiber concrete slab.
The prefabricated support frame is made of materials including but not limited to steel materials, fiber materials and composite materials.
The prefabricated support frame is a prefabricated arch frame or a prefabricated truss.
The lower part of the prefabricated support frame is embedded in the prefabricated lining body.
And a fluid plastic material or a granular material is filled between the prefabricated lining masonry and the surrounding rock.
And the prefabricated lining masonry is provided with an anchor rod assembly or a grouting reinforcement assembly.
The invention has the advantages that:
(1) the prefabricated wall rock excavation supporting device has the advantages that the prefabricated wall rock excavation supporting device can be assembled quickly, the surrounding rock excavation surface is supported in a sealed mode, exposure time of the excavation surface is shortened, prefabricated assembly components are produced in a factory standard mode, quality of the prefabricated components can be effectively guaranteed, safety of excavation construction and supporting systems is improved, concrete spraying construction is omitted, and construction working conditions are improved.
(2) The supporting mode of lining by adopting the prefabricated lining segments is characterized in that the prefabricated steel frame is used as a main stress part, the prefabricated lining plates can be prevented from being damaged due to uneven local stress, the surrounding rock pressure on the prefabricated lining plates is reduced, the thickness of the prefabricated lining plates can be effectively reduced, less materials are used, the construction efficiency is improved, and the supporting mode has higher economy.
(3) The filling material ensures the close contact between the prefabricated lining plate and the surrounding rocks at the periphery, so that the stress of the prefabricated lining segment structure is balanced, and the structural safety is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described 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 diagram (one way) of the present invention.
FIG. 2 is a schematic diagram (two-way) of the structure of the present invention.
In the figure: 1-prefabricating lining masonry and 2-prefabricating a support frame.
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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 and 2, a prefabricated composite lining segment comprises prefabricated lining masonry 1 and prefabricated support frames 2. The prefabricated support frame 2 is arranged in the outer circumferential direction of the prefabricated lining masonry 1. The lower part of the prefabricated support frame 2 is embedded in the prefabricated lining masonry 1, and the upper part of the prefabricated support frame 2 is higher than the upper surface of the prefabricated lining masonry 1.
The prefabricated lining brickwork 1 is a straight plate or an arc plate which is arranged in a blocking mode, the prefabricated lining plates are assembled according to surrounding rock excavation contour lines to form a closed supporting system, the blocked prefabricated lining brickwork 1 is circumferentially assembled into a ring and axially assembled into a pipe, and the blocking mode, the blocking number and the geometric dimension are designed according to actual conditions. The prefabricated lining masonry 1 is made of a concrete slab, a reinforced concrete slab, a prestressed concrete slab or a fiber concrete slab.
The prefabricated support frame 2 adopts a prefabricated steel arch frame or a prefabricated steel truss. One, two or more than two can be arranged according to the construction requirement. The prefabricated support frame 2 is made of I-shaped steel or H-shaped steel, the lower flanges and partial webs of the I-shaped steel and the H-shaped steel are embedded in the prefabricated lining masonry 1, and the upper flanges and the rest webs extend out of the upper surface of the prefabricated lining masonry.
The prefabricated steel frame is firmly connected with the prefabricated lining plate, and according to the actual situation of the surrounding rock, when the stability of the surrounding rock is good and the ground stress is lower, one prefabricated support frame can be arranged on each prefabricated lining plate, and when the stability of the surrounding rock is poor and the ground stress is higher, two or more prefabricated support frames can be arranged on each prefabricated lining plate.
The prefabricated lining masonry 1 and the surrounding rock are filled with the fluid plastic material or the granular material, the prefabricated support frame 2 is wrapped in the filling medium, the surrounding rock, the prefabricated support frame and the prefabricated lining body are connected into a whole, so that the load borne by the duct piece can be uniformly shared, and the structure stress of the lining masonry panel is reasonable.
An anchor rod assembly or a grouting reinforcement assembly can be arranged on the prefabricated lining masonry 1 to form an integral stress structure. And after the prefabricated lining body is assembled, whether a secondary lining is constructed or not is determined according to actual conditions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a prefabricated composite lining segment, includes prefabricated lining brickwork (1), its characterized in that: the outer side of prefabricated lining brickwork (1) be equipped with prefabricated support frame (2) that circumference was arranged, the lower part of prefabricated support frame (2) is buried underground in prefabricated lining brickwork (1), the upper portion of prefabricated support frame (2) is higher than the upper surface of prefabricated lining brickwork (1).
2. The prefabricated composite lining segment of claim 1, wherein: the prefabricated lining masonry (1) comprises but is not limited to straight plates, arc plates and curved plates.
3. The prefabricated composite lining segment of claim 1 or 2, wherein: the prefabricated lining masonry (1) is arranged in a blocking mode, the blocked prefabricated lining masonry (1) is spliced into a ring in the circumferential direction and is spliced into a pipe in the axial direction.
4. The prefabricated composite lining segment of claim 1, wherein: the precast lined masonry (1) comprises but is not limited to a concrete plate, a reinforced concrete plate, a prestressed concrete plate or a fiber concrete plate.
5. The prefabricated composite lining segment of claim 1, wherein: the prefabricated support frame (2) is made of materials including but not limited to steel materials, fiber materials and composite materials.
6. The prefabricated composite lining segment of claim 1 or 5, wherein: the prefabricated support frame (2) is a prefabricated arch frame or a prefabricated truss.
7. The prefabricated composite lining segment of claim 1, wherein: the lower part of the prefabricated support frame (2) is embedded in the prefabricated lining masonry body (1).
8. The prefabricated composite lining segment of claim 1 or 7, wherein: and a fluid plastic material or a granular material is filled between the prefabricated lining masonry (1) and the surrounding rock.
9. The prefabricated composite lining segment of claim 1 or 7, wherein: the prefabricated lining masonry (1) is provided with an anchor rod assembly or a grouting reinforcement assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382312.2A CN110905548A (en) | 2019-12-28 | 2019-12-28 | Prefabricated composite lining segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382312.2A CN110905548A (en) | 2019-12-28 | 2019-12-28 | Prefabricated composite lining segment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110905548A true CN110905548A (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911382312.2A Pending CN110905548A (en) | 2019-12-28 | 2019-12-28 | Prefabricated composite lining segment |
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| CN (1) | CN110905548A (en) |
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| JP2009074291A (en) * | 2007-09-20 | 2009-04-09 | Nippon Steel Corp | Simple composite segment |
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| CN105927251A (en) * | 2016-06-30 | 2016-09-07 | 吴镇 | Shallow embedded magnesium iron-reinforced concrete combined tunnel wall plate |
| CN106869963A (en) * | 2017-03-24 | 2017-06-20 | 山东大学 | A kind of curve pipe roof construction prefabricated compound section of jurisdiction of shield tunnel |
| CN107725068A (en) * | 2017-11-06 | 2018-02-23 | 山东建筑大学 | A kind of assembled supporting construction and its construction method based on outside steel arch-shelf and inner side concrete slab |
| CN108119163A (en) * | 2018-01-31 | 2018-06-05 | 中交公路长大桥建设国家工程研究中心有限公司 | For the assembled secondary liner structure of drill+blast tunnel and composite lining structure |
| CN108222965A (en) * | 2018-01-30 | 2018-06-29 | 中交公路长大桥建设国家工程研究中心有限公司 | Assembled ultra-high performance concrete duct pieces of shield tunnel and preparation method thereof |
| CN109723459A (en) * | 2019-03-08 | 2019-05-07 | 中铁十九局集团第三工程有限公司 | A kind of tunnel portal open excavation section prefbricated tunnel lining structure |
| CN110056371A (en) * | 2019-05-28 | 2019-07-26 | 长安大学 | A kind of tunnel morning strong supporting system and its installation method |
| CN110094215A (en) * | 2019-05-30 | 2019-08-06 | 三峡大学 | Non-newtonian fluid liner supporting structure and construction method |
-
2019
- 2019-12-28 CN CN201911382312.2A patent/CN110905548A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009074291A (en) * | 2007-09-20 | 2009-04-09 | Nippon Steel Corp | Simple composite segment |
| CN202325548U (en) * | 2011-11-30 | 2012-07-11 | 西安科技大学 | Secondary yielding uniform pressure supporting structure of roadway surrounding rock under high ground stress |
| CN105927251A (en) * | 2016-06-30 | 2016-09-07 | 吴镇 | Shallow embedded magnesium iron-reinforced concrete combined tunnel wall plate |
| CN106869963A (en) * | 2017-03-24 | 2017-06-20 | 山东大学 | A kind of curve pipe roof construction prefabricated compound section of jurisdiction of shield tunnel |
| CN107725068A (en) * | 2017-11-06 | 2018-02-23 | 山东建筑大学 | A kind of assembled supporting construction and its construction method based on outside steel arch-shelf and inner side concrete slab |
| CN108222965A (en) * | 2018-01-30 | 2018-06-29 | 中交公路长大桥建设国家工程研究中心有限公司 | Assembled ultra-high performance concrete duct pieces of shield tunnel and preparation method thereof |
| CN108119163A (en) * | 2018-01-31 | 2018-06-05 | 中交公路长大桥建设国家工程研究中心有限公司 | For the assembled secondary liner structure of drill+blast tunnel and composite lining structure |
| CN109723459A (en) * | 2019-03-08 | 2019-05-07 | 中铁十九局集团第三工程有限公司 | A kind of tunnel portal open excavation section prefbricated tunnel lining structure |
| CN110056371A (en) * | 2019-05-28 | 2019-07-26 | 长安大学 | A kind of tunnel morning strong supporting system and its installation method |
| CN110094215A (en) * | 2019-05-30 | 2019-08-06 | 三峡大学 | Non-newtonian fluid liner supporting structure and construction method |
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