CN106401615A - Highway tunnel supporting structure integrating initial lining steel arch and prestressed anchor rods and construction technology - Google Patents
Highway tunnel supporting structure integrating initial lining steel arch and prestressed anchor rods and construction technology Download PDFInfo
- Publication number
- CN106401615A CN106401615A CN201611088751.9A CN201611088751A CN106401615A CN 106401615 A CN106401615 A CN 106401615A CN 201611088751 A CN201611088751 A CN 201611088751A CN 106401615 A CN106401615 A CN 106401615A
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- Prior art keywords
- anchor
- shelf
- steel arch
- steel
- anchor pole
- 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.)
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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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- 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
- E21D11/10—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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
Abstract
The invention discloses a highway tunnel supporting structure integrating an initial lining steel arch and prestressed anchor rods. The highway tunnel supporting structure comprises the steel arch, the prestressed anchor rods, anchor rod supporting plates, anchor rod steel underboardings, anchor rod nylon underboardings and anchor rod fastening nuts. The upper portion of the steel arch are connected with the anchor rod supporting plates in a welded mode; the anchor rod supporting plates are provided with anchor rod holes; one ends of the anchor rods penetrate through the anchor rod holes and are sequentially connected with the anchor rod steel underboardings, the anchor rod nylon underboardings and the anchor rod fastening nuts; and the nylon underboardings are customized according to the designed prestress value of the anchor rods to enable the fastening nuts to deform obviously when loaded to the designed value. Accordingly, the invention further provides a construction technology of the highway tunnel supporting structure integrating the initial lining steel arch and the prestressed anchor rods. The highway tunnel supporting structure integrating the initial lining steel arch and the prestressed anchor rods and the construction technology have the beneficial effects that the highway tunnel supporting structure integrating the initial lining steel arch and the prestressed anchor rods is adopted to greatly improve the supporting strength, and therefore large-area collapse is effectively avoided in the construction process.
Description
Technical field
The present invention relates to building structure technology field, more particularly to a kind of vcehicular tunnel just lined steel bow member and prestressed anchor
Bar integration supporting construction and construction technology.
Background technology
In the work progress of vcehicular tunnel, need using supporting construction, tunnel to be supported, to prevent tunnel wall face
Subside, current supporting construction includes steel arch-shelf structure and prestressed anchor structure, however, steel arch-shelf structure and prestressed anchor
Structure each its effect of independent, effect is poor, in work progress, or understands the situations such as the landslide of occurrence of large-area.
Content of the invention
The invention aims to solving defect present in above-mentioned technology, and provide lined steel arch at the beginning of a kind of vcehicular tunnel
Frame supporting construction integrated with prestressed anchor and construction technology.
For realizing the purpose of the present invention, the invention provides a kind of vcehicular tunnel just lined steel bow member and prestressed anchor one
Change supporting construction, including steel arch-shelf, prestressed anchor and Supporting plate for anchor, anchor pole billet, anchor pole nylon back plate, anchor pole fastening
Nut, described steel arch-shelf top is welded to connect with Supporting plate for anchor, and described Supporting plate for anchor is provided with bolthole, and one end of anchor pole passes through
After bolthole, it is connected with anchor pole billet, anchor pole nylon back plate, anchor pole fixing nut successively, described nylon back plate is according to anchor
Bar design prestress value customization produces significantly deformation so that anchor pole fixing nut is loaded into during design load.
Wherein, described steel arch-shelf is I-steel bow member, U-shaped steel arch-shelf, H profile steel bow member or grid steel arch-shelf, described grid
Steel arch-shelf includes four cage bars, brace and the stirrup entangling four cage bars, arranges foundation beam at described steel arch-shelf foot.
Wherein, described anchor pole is prestressing force grouted anchor bar, prestressing force resin explosive roll anchor pole or prestressing force cement-roll anchor pole.
Wherein, described Supporting plate for anchor is along steel arch-shelf top both sides arranged for interval.
Wherein, described steel arch-shelf be multistage splicing construction, between multistage pass through connection supporting plate be connected, steel arch-shelf be connected
Supporting plate welds, and connects supporting plate and is bolted to connection with being connected supporting plate.
Correspondingly, additionally provide a kind of vcehicular tunnel just lined steel bow member support construction work integrated with prestressed anchor
Skill, comprises the steps：
(1) check excavated section headroom size, remove and loosen sillar, clean crag dust；
(2) just spray the thick concrete of 40mm～60mm；
(3) lay bar-mat reinforcement；
(4) set up steel arch-shelf, be welded to connect bar-mat reinforcement；
(5) beat bolthole, anchor pole is installed, apply anchor rod prestress, bar-mat reinforcement is connected with anchor pole colligation or welds；By anchor
Bar is connected with steel arch-shelf；
(6) to design thickness, steel arch-shelf and anchor pole should be covered multiple pneumatically placed concrete by multiple pneumatically placed concrete, protection with shotcrete layer
Thickness is not less than 20mm.
Wherein, in step (5), anchor pole is connected with steel arch-shelf, connects in the following way：By on described steel arch-shelf
Portion is welded to connect with Supporting plate for anchor, and described Supporting plate for anchor is provided with bolthole, after one end of anchor pole passes through bolthole, successively with anchor
Bar billet, anchor pole nylon back plate, anchor pole fixing nut are connected, and described nylon back plate is fixed according to Soil Anchor Design prestress value
System, makes nut be loaded into during design load and produces significantly deformation, and the stressed member connecting anchor bar body can bear 95% body of rod
Ultimate Tensile power.
Wherein, along steel arch-shelf top both sides arranged for interval, Supporting plate for anchor spacing is according to tunnel support design really for Supporting plate for anchor
Fixed, spacing is generally 0.5～1.5m；Supporting plate for anchor Q235 steel, thickness is more than 6mm, and bolthole is with diameter greater than bit of rock drilling machine
10mm～25mm, bolthole direction is vertical with excavation face, the latter, when level rock or primary structure face are obvious, with excavation face
Become the larger angle of cut, but be not more than 20 ° with excavation face vertical missing.
Wherein, anchor pole is prestressing force grouted anchor bar, prestressing force resin explosive roll anchor pole or prestressing force cement-roll anchor pole, anchor pole
Rod body material adopts HRB335 steel or HRB400 steel, and shank diameter is 16mm～32mm；Grouted anchor bar mortar quality match ratio
Cement bonded sand water is 11 0.45, and grouting pressure is maintained at 0.3MPa, and strength of cement mortar grade is not less than M20；Cement
Powder stick soaks preferably in clear water, with bubble, the initial set of mortar is not less than 3min, and final set is not more than 30min, and prestressed anchor is pre-
Plus stress is not less than 100kN.
Wherein, steel arch-shelf adopts clod wash method to make and merogenesis makes, and merogenesis length is not more than 4m.
Compared with prior art, beneficial effects of the present invention are, using vcehicular tunnel just lined steel bow member and prestressed anchor
Integrated supporting construction can greatly improve support strength, thus being prevented effectively from work progress, occurrence of large-area is caved in.
Brief description
Fig. 1 show the structural representation of the embodiment of the present invention；
Fig. 2 show the steel arch-shelf of the embodiment of the present invention and attachment structure first schematic diagram of prestressed anchor；
Fig. 3 show the steel arch-shelf of the embodiment of the present invention and attachment structure second schematic diagram of prestressed anchor；
Fig. 4 show the steel arch-shelf of the embodiment of the present invention and attachment structure the 3rd schematic diagram of prestressed anchor；
Fig. 5 show the steel arch-shelf of the embodiment of the present invention and attachment structure the 4th schematic diagram of prestressed anchor；
Fig. 6 show the steel arch-shelf of the embodiment of the present invention and attachment structure the 5th schematic diagram of prestressed anchor；
The steel arch-shelf that Fig. 7 show the embodiment of the present invention and attachment structure first schematic diagram being connected supporting plate；
The steel arch-shelf that Fig. 8 show the embodiment of the present invention and attachment structure second schematic diagram being connected supporting plate；
Fig. 9 show the steel arch-shelf of the embodiment of the present invention and the attachment structure schematic diagram of foundation beam；
In figure, 1- shotcrete layer, 2- steel arch-shelf, 3- foundation beam, 4- dowel, 5- Supporting plate for anchor, 6- bolthole, 7-
I-steel bow member, 8- grid steel arch-shelf, 9- brace, 10- cage bar, 11- anchor pole billet, 12- anchor pole nylon back plate, 13- anchor pole
Clamp nut, 14- connects supporting plate, 15- bolt connecting hole, 16- bolt hole, 17- prestressed anchor.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.It should be appreciated that it is described herein
Specific embodiment only in order to explain the present invention, be not intended to limit the present invention.
It should be noted that " connection " described herein and be used for expressing the word of " connection ", such as " being connected ",
" being connected " etc., both included a certain part and be directly connected to another part, and also included a certain part and pass through miscellaneous part and another portion
Part is connected.
It should be noted that term used herein above is merely to describe specific embodiment, and it is not intended to restricted root
Illustrative embodiments according to the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to including plural form, additionally, it should be understood that, when in this manual using belong to "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, part or module, assembly and/or combinations thereof.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that such use
Data can exchange in the appropriate case, so that presently filed embodiment described herein for example can be with except here
Order beyond those of diagram or description is implemented.Additionally, term " comprising " and " having " and their any deformation it is intended that
It is to cover non-exclusive comprising, for example, contain process, method, system, product or the equipment of series of steps or unit not
It is necessarily limited to those steps or the unit clearly listed, but may include clearly not listing or for these processes, side
Method, product or the intrinsic other steps of equipment or unit.
For the ease of description, space relative terms can be used here, such as " ... on ", " ... top ",
" in ... upper surface ", " above " etc., for describe as a part shown in the figure or module or feature and other
Part or the spatial relation of module or feature.It should be appreciated that space relative terms be intended to comprise except part or
Different azimuth in use or operation outside orientation described by figure for person's module.For example, if the part in accompanying drawing
Or module is squeezed, then be described as " above miscellaneous part or module or construction " or " in miscellaneous part or module or
On construction " part or module after will be positioned as " below miscellaneous part or module or construction " or " at other
Under part or module or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.This part or module other different modes positioning (can also ratate 90 degrees or be in other
Orientation), and respective explanations are made to space used herein above description relatively.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine.
Embodiment
Overall pattern such as Fig. 1 institute of the first lined steel bow member supporting construction integrated with prestressed anchor of the present embodiment vcehicular tunnel
Show：Including：Steel arch-shelf 2, prestressed anchor 17, foundation beam 3 etc..Described integral structure includes I-steel (U-shaped steel, H profile steel)
Bow member 7 supporting construction integrated with prestressed anchor 17 and grid steel arch-shelf 8 supporting construction integrated with prestressed anchor 17.
Wherein, I-steel (U-shaped steel, H profile steel) bow member supporting construction integrated with prestressed anchor includes：I-steel is (U-shaped
Steel, H profile steel) bow member 7, Supporting plate for anchor 5, I-steel (U-shaped steel, H profile steel) adapter plate, prestressed anchor 17, anchor pole billet 11,
Anchor pole nylon back plate 12 and anchor pole clamp nut 13 etc..
Grid steel arch-shelf supporting construction integrated with prestressed anchor includes：Grid steel arch-shelf 8, Supporting plate for anchor 5, grid steel
Bow member adapter plate, prestressed anchor 17, anchor pole billet 11, anchor pole nylon back plate 12 and anchor pole clamp nut 13 etc..
Wherein, Supporting plate for anchor 5 and steel arch-shelf 2 upper limb (top) are weldingly connected, Supporting plate for anchor 5 along steel arch-shelf 2 upper limb (on
Portion) both sides arranged for interval, Supporting plate for anchor 5 spacing is according to tunnel support design determination, spacing generally 0.5～1.5m, bolthole 6
Diameter should be greater than bit of rock drilling machine 10mm～25mm.Steel arch-shelf 2 and connection such as Fig. 2, Fig. 3, Fig. 4 and Fig. 5 institute of Supporting plate for anchor 5
Show.
Wherein, prestressed anchor 17 is prestressing force grouted anchor bar, prestressing force resin explosive roll anchor pole, prestressing force cement-roll anchor
Bar.The connection of anchor pole 17 end and Supporting plate for anchor 5 is as shown in Figure 6.
Prestressed anchor boom end connects as shown, Supporting plate for anchor 5, roof bolt plate 11, nylon back plate 12.Nylon back plate 12
According to the customization of Soil Anchor Design prestress value, so that nut is loaded into during design load and produce significantly deformation, connect the stress of anchor bar body
Part should be able to bear 95% body of rod Ultimate Tensile power.
Wherein, foundation beam 3 is set at steel arch 2 foot.The connection of I-steel steel arch-shelf 7 is as shown in fig. 7, grid steel arch-shelf 8
Connection as shown in figure 8, steel arch-shelf 2 is as shown in Figure 9 with the connection of foundation beam 3.
With above-mentioned vcehicular tunnel just lined steel bow member supporting construction integrated with prestressed anchor accordingly, the present invention also carries
Supply its construction technology a kind of, comprised the steps：
(1) check excavated section headroom size, remove and loosen sillar, clean crag dust；
(2) just spray 40mm～60mm concrete；
(3) lay bar-mat reinforcement；
(4) set up steel arch-shelf, be welded to connect reinforcing bar；
(5) beat bolthole, anchor pole is installed, apply anchor rod prestress, bar-mat reinforcement is connected with anchor pole colligation or welds；
(6) to design thickness, steel arch-shelf and anchor pole should be covered multiple pneumatically placed concrete by multiple pneumatically placed concrete, protection with shotcrete layer
Thickness is not less than 20mm.
It should be noted that：
1. just lined steel bow member supporting construction integrated with prestressed anchor is applied to composite lining of tunnel knot to vcehicular tunnel
The preliminary bracing of structure.
2. the preliminary bracing of composite lining structure should be using by gunite concrete, anchor pole, bar-mat reinforcement and steelframe combination supporting
Form.
3. secondary lining preferably builds reinforced concrete structure using form concrete or mould.
4. gunite concrete design strength is not lower than C20, and important tunnel is not lower than C25, preferably adopts technique, and wet shot mixes
Solidifying soil slump preferably controls in 80mm～120mm.
5. Spraying of reinforcement mat with concrete thickness is not preferably greater than 300mm, and monolayer Spraying of reinforcement mat with concrete thickness cannot be less than
80mm, double layer bar gunite concrete thickness cannot be less than 150mm, and bar-mat reinforcement protective layer thickness cannot be less than 20mm.
6. reinforcing bar net materials preferably adopt HPB235 reinforcing bar, and bar diameter is preferably 6mm～12mm.
7. bar-mat reinforcement preferably coordinates anchor pole and steel arch-shelf to be used together, and bar-mat reinforcement should be connected with anchor pole or steel arch-shelf colligation or weld
Connect.
8. anchor pole should be prestressing force grouted anchor bar, prestressing force resin explosive roll anchor pole, prestressing force cement-roll anchor pole.Anchor pole bar
Body material preferably adopts HRB335, HRB400 steel, and shank diameter is preferably 16mm～32mm.Grouted anchor bar mortar quality match ratio water
Sand water is preferably 11 0.45, and grouting pressure should be maintained at 0.3MPa, and strength of cement mortar grade is not lower than M20.
Cement-roll soaks preferably in clear water, with bubble, the initial set of mortar cannot be less than 3min, and final set cannot be greater than 30min, in advance should
Power anchor pole prestress is no less than 100kN.
9. Supporting plate for anchor and steel arch-shelf upper limb (top) are weldingly connected, and Supporting plate for anchor is along between steel arch-shelf upper limb (top) both sides
Every arrangement, Supporting plate for anchor spacing designs according to tunnel support and determines, spacing is generally 0.5～1.5m.Supporting plate for anchor can use Q235
Steel, thickness should be greater than 6mm, and anchor pole bore dia should be greater than bit of rock drilling machine 10mm～25mm, is preferably hung down with excavation face in bolthole direction
Directly, when level rock or primary structure face are obvious, become the larger angle of cut with it as far as possible, but should not be big with excavation face vertical missing
In 20 °.
10. Supporting plate for anchor, roof bolt plate, nylon back plate.Nylon back plate customizes according to Soil Anchor Design prestress value, makes nut
It is loaded into produce during design load and significantly deforms, the stressed member connecting anchor bar body should be able to bear 95% body of rod Ultimate Tensile
Power.
11. steel arch-shelf can be selected for H profile steel, I-steel, U-shaped steel or reinforcement fabrication grid steel frame.Grid steel frame should adopt
HRB335, HRB400 steel, cage bar diameter 18～32mm, auxiliary muscle preferably adopts HPB235, HRB335 steel, auxiliary muscle diameter be preferably 10～
16mm.
12. steel arch-shelf are preferably made merogenesis using clod wash legal system and are made, and merogenesis length is not preferably greater than 4m.
The above is only the preferred embodiment of the present invention it is noted that common skill for the art
For art personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of vcehicular tunnel just lined steel bow member supporting construction integrated with prestressed anchor it is characterised in that inclusion steel arch-shelf,
Prestressed anchor and Supporting plate for anchor, anchor pole billet, anchor pole nylon back plate, anchor pole clamp nut, described steel arch-shelf top with
Supporting plate for anchor is welded to connect, and described Supporting plate for anchor is provided with bolthole, after one end of anchor pole passes through bolthole, successively with anchor bar steel
Backing plate, anchor pole nylon back plate, anchor pole fixing nut are connected, and described nylon back plate customizes according to Soil Anchor Design prestress value, makes
Obtain anchor pole fixing nut and be loaded into produce during design load and significantly deform.
2. vcehicular tunnel according to claim 1 just lined steel bow member supporting construction integrated with prestressed anchor, its feature
It is, described steel arch-shelf is I-steel bow member, U-shaped steel arch-shelf, H profile steel bow member or grid steel arch-shelf, described grid steel arch-shelf bag
Include four cage bars, brace and the stirrup entangling four cage bars, foundation beam is set at described steel arch-shelf foot.
3. vcehicular tunnel according to claim 1 just lined steel bow member supporting construction integrated with prestressed anchor, its feature
It is, described anchor pole is prestressing force grouted anchor bar, prestressing force resin explosive roll anchor pole or prestressing force cement-roll anchor pole.
4. vcehicular tunnel according to claim 1 just lined steel bow member supporting construction integrated with prestressed anchor, its feature
It is, described Supporting plate for anchor is along steel arch-shelf top both sides arranged for interval.
5. vcehicular tunnel according to claim 1 just lined steel bow member supporting construction integrated with prestressed anchor, its feature
It is, described steel arch-shelf is multistage splicing construction, be connected by connecting supporting plate between multistage, steel arch-shelf welds with being connected supporting plate
Connect, connect supporting plate and be bolted to connection with being connected supporting plate.
6. a kind of vcehicular tunnel just lined steel bow member support construction technique integrated with prestressed anchor it is characterised in that：Bag
Include following steps：
(1) check excavated section headroom size, remove and loosen sillar, clean crag dust；
(2) just spray the thick concrete of 40mm～60mm；
(3) lay bar-mat reinforcement；
(4) set up steel arch-shelf, be welded to connect bar-mat reinforcement；
(5) beat bolthole, anchor pole is installed, apply anchor rod prestress, bar-mat reinforcement is connected with anchor pole colligation or welds；By anchor pole with
Steel arch-shelf is connected；
(6) to design thickness, steel arch-shelf and anchor pole should be covered multiple pneumatically placed concrete by multiple pneumatically placed concrete, protection with shotcrete thickness degree
Not less than 20mm.
7. vcehicular tunnel according to claim 6 just lined steel bow member support construction work integrated with prestressed anchor
Skill it is characterised in that：
In step (5), anchor pole is connected with steel arch-shelf, connects in the following way：By described steel arch-shelf top and anchor pole
Supporting plate is welded to connect, and described Supporting plate for anchor is provided with bolthole, after one end of anchor pole passes through bolthole, successively with anchor bar steel pad
Plate, anchor pole nylon back plate, anchor pole fixing nut are connected, and described nylon back plate customizes according to Soil Anchor Design prestress value, makes spiral shell
Mother is loaded into produce during design load and significantly deforms, and the stressed member connecting anchor bar body can bear 95% body of rod Ultimate Tensile
Power.
8. vcehicular tunnel according to claim 7 just lined steel bow member support construction work integrated with prestressed anchor
Skill it is characterised in that：, along steel arch-shelf top both sides arranged for interval, Supporting plate for anchor spacing is according to tunnel support design really for Supporting plate for anchor
Fixed, spacing is generally 0.5～1.5m；Supporting plate for anchor Q235 steel, thickness is more than 6mm, and bolthole is with diameter greater than bit of rock drilling machine
10mm～25mm, bolthole direction is vertical with excavation face, the latter, when level rock or primary structure face are obvious, with excavation face
Become the larger angle of cut, but be not more than 20 ° with excavation face vertical missing.
9. vcehicular tunnel according to claim 8 just lined steel bow member support construction work integrated with prestressed anchor
Skill it is characterised in that：Anchor pole is prestressing force grouted anchor bar, prestressing force resin explosive roll anchor pole or prestressing force cement-roll anchor pole, anchor
Club shaft material adopts HRB335 steel or HRB400 steel, and shank diameter is 16mm～32mm；Grouted anchor bar mortar quality coordinates
It is 11 0.45 than cement bonded sand water, grouting pressure is maintained at 0.3MPa, and strength of cement mortar grade is not less than M20；Water
Mud powder stick soaks preferably in clear water, with bubble, the initial set of mortar is not less than 3min, and final set is not more than 30min, prestressed anchor
Prestress is not less than 100kN.
10. vcehicular tunnel according to claim 9 just lined steel bow member support construction work integrated with prestressed anchor
Skill it is characterised in that：Steel arch-shelf adopts clod wash method to make and merogenesis makes, and merogenesis length is not more than 4m.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620943950 | 2016-08-25 | ||
| CN2016209439502 | 2016-08-25 |
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| CN106401615A true CN106401615A (en) | 2017-02-15 |
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|---|---|---|---|
| CN201611088751.9A Pending CN106401615A (en) | 2016-08-25 | 2016-12-01 | Highway tunnel supporting structure integrating initial lining steel arch and prestressed anchor rods and construction technology |
| CN201621307639.5U Active CN206220978U (en) | 2016-08-25 | 2016-12-01 | Vcehicular tunnel first lined steel bow member supporting construction integrated with prestressed anchor |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621307639.5U Active CN206220978U (en) | 2016-08-25 | 2016-12-01 | Vcehicular tunnel first lined steel bow member supporting construction integrated with prestressed anchor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109372556A (en) * | 2018-09-30 | 2019-02-22 | 淮阴工学院 | A kind of sandwich arch and construction method suitable for high stressed soft rock tunnel supporting roadway surrounding rock |
| CN111456767A (en) * | 2019-10-29 | 2020-07-28 | 中国建筑股份有限公司 | Subsection-integrated cast tunnel steel arch structure and supporting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893665B (en) * | 2017-11-06 | 2019-07-05 | 山东建筑大学 | A kind of prefabricated assembled composite supporting construction mounting process based on fashioned iron |
| CN108222989B (en) * | 2018-02-02 | 2024-03-22 | 中交三航局第三工程有限公司 | Anchor rod stabilizing device for tunnel construction and mounting method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372556A (en) * | 2018-09-30 | 2019-02-22 | 淮阴工学院 | A kind of sandwich arch and construction method suitable for high stressed soft rock tunnel supporting roadway surrounding rock |
| CN111456767A (en) * | 2019-10-29 | 2020-07-28 | 中国建筑股份有限公司 | Subsection-integrated cast tunnel steel arch structure and supporting method thereof |
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