CN109404008A - Intelligent prestressed concrete liner tunnel - Google Patents
Intelligent prestressed concrete liner tunnel Download PDFInfo
- Publication number
- CN109404008A CN109404008A CN201811432454.0A CN201811432454A CN109404008A CN 109404008 A CN109404008 A CN 109404008A CN 201811432454 A CN201811432454 A CN 201811432454A CN 109404008 A CN109404008 A CN 109404008A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- concrete layer
- ring shape
- circular ring
- lining concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 13
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 239000011435 rock Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 27
- 230000005611 electricity Effects 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- E21D11/006—Lining anchored in the rock
-
- 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of intelligent prestressed concrete liner tunnel structures, it include: country rock, circular ring shape flat jack and lining concrete layer, multiple circular ring shape flat jacks are evenly arranged between lining concrete layer and country rock, it is all evenly arranged along hole longitudinal direction and cross section, it is closely knit to transmit load that they need rockfill grouting to fill and lead up between country rock.The present invention is when tunnel water-filling generates electricity, as internal water pressure increase in hole can generate circumferential tensile stress in lining concrete layer；Simultaneously, with the continuous raising of water level in tunnel, water flow constantly can from bottom to top progress into circular ring shape flat jack, external uniform water pressure is applied to lining concrete layer, pressure value is identical as internal water pressure, because being connected in water inlet pipe and tunnel, compressive pre-stress is not in numerically tensile stress always greater than tensile stress, therefore in lining concrete layer.Its outstanding advantages is: loss of prestress caused by those expendable deformations can give " compensation " at any time.
Description
Technical field
The present invention relates to one kind to belong to tunnel technical field more particularly to a kind of intelligent prestressed concrete liner tunnel
Structure.
Background technique
Prestressed concrete is the reversed load for being artificially induced a certain numerical value and distribution as needed, to part or entirely
Offset a kind of reinforced-concrete of tensile stress caused by external load in portion.It is optional due to the presence of country rock for pressure tunnel
With additional electrothermal prestressing, using circular ring shape flat jack --- the hollow dedicated pressurized equipment made of sheet metal, it is mixed in lining cutting
Solidifying soil outer layer applies and the reversed radial equipartition load of internal water pressure, can partly or entirely offset and draw caused by internal water pressure
Stress.It is worth noting that dedicated grouting pump must be used by applying prestressing force in the past, it must be complete before the effect of hole internal water pressure
At circumferential compressive pre-stress comes into existence therewith, and changes with the variation of hole internal water pressure --- reduce, disappear or restore and is original
Compressive pre-stress.Since compressive pre-stress is maintained by country rock with lining concrete jointly, thus concrete creep and the modeling of country rock
Property deformation will have a direct impact on the size of compressive pre-stress, the measures such as superpressure, pressure stabilizing can only be leaned on to reduce the loss of compressive pre-stress.And it adopts
With intelligent prestressed concrete liner technology, then those expendable deformations can be automatically derived " compensation " at any time, because
Flat jack its volume under interior effect of water pressure can increase space caused by fill up those deformations.
Summary of the invention
The present invention provides a kind of limitation for overcoming existing monotechnics, and the intelligent prestressing force to solve the above problems is mixed
Solidifying soil lined tunnel technology, loss of prestress caused by those expendable deformations can be obtained " compensating " at any time by it.
To achieve the goals above, the invention provides the following technical scheme:
A kind of intelligent prestressed concrete liner tunnel, comprising: country rock, multiple circular ring shape flat jacks and lining cutting coagulation
Soil layer, multiple circular ring shape flat jacks are longitudinally uniformly arranged between lining concrete layer and country rock along tunnel, cross-sectional along tunnel
Face is also symmetrically arranged to independent pressure rings one by one, is not connected between each ring.The circular ring shape flat jack of every ring it
Between connected by joint steel pipe, and be connected to by the way that pipeline and tunnel are interior.Pass through back between multiple circular ring shape flat jacks and country rock
Fill out grouting fill and lead up it is closely knit to transmit load.
Further, the circular ring shape flat jack surrounds the independently pressurized knot of circular ring shape one by one by multiple flat jacks
Structure, the inlet and outlet pipes of every ring be connected in tunnel.
In the above-mentioned technical solutions, intelligent prestressed concrete liner tunnel provided by the invention has the beneficial effect that
When water-filling of the present invention power generation, circumferential drawing can be generated in lining concrete layer with being continuously increased for internal water pressure of the present invention
Stress；Meanwhile with the continuous raising of water level in the present invention, water flow constantly from bottom to top can progress into circle by inlet and outlet pipes
In annular flat jack, and pressure is stepped up to internal water pressure value, applies prestressing force to lining concrete layer and generates ring
To compressive pre-stress.Since tensile stress generates simultaneously with compressive pre-stress, and compressive pre-stress is numerically always greater than tensile stress, therefore serves as a contrast
Almost still it is in building concrete layer " zero stress state ".On the contrary, when tunnel upper gate is closed, due to water flow and circle in tunnel
Water flow is connected in annular flat jack, and internal water pressure disappears simultaneously with the uniform water pressure in flat jack, therefore lining cutting coagulation
Soil layer restores original " zero stress state ".Its outstanding advantages is: it is pressurizeed using aqueous medium, and pressure value is identical as internal water pressure,
Apply outer well-distributed pressure by flat jack, the space caused by pressure dwell, those expendable deformations at once can be by
The deformation of flat jack is filled, i.e. compressive pre-stress loss can will not generate compressive pre-stress loss by " recovery " at any time.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only one recorded in the present invention
A little embodiments are also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is a kind of transverse sectional view of intelligent prestressed concrete liner tunnel provided in an embodiment of the present invention；
Fig. 2 is a kind of longitudinal sectional view of intelligent prestressed concrete liner tunnel provided in an embodiment of the present invention.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing to this hair
It is bright to be further detailed.
As illustrated in fig. 1 and 2, a kind of intelligent prestressed concrete liner tunnel described in the embodiment of the present invention, comprising: enclose
Rock 1, multiple circular ring shape flat jacks 4 and lining concrete layer 2, multiple circular ring shape flat jacks 4 are set to lining concrete layer 2
It between country rock 1, is longitudinally evenly arranged along hole (as shown in Figure 2), is each other in independent pressure rings, is connected without pipeline；
Circular ring shape flat jack is also symmetrically arranged along hole cross section as shown in Figure 1, independent cyclization, there is the company of pipeline 6 each other
Connect, and pipeline 6 is connect with pipeline 5, pipeline 5 pass through lining concrete layer after with (as shown in Figure 1) is connected in tunnel.Annulus
It is rockfill grouting layer 3 between shape flat jack 4 and country rock 1, fills and leads up closely knit to transmit load.The circular ring shape flat jack 4 one
A one surrounds circular ring shape absolute construction, the inlet and outlet pipes 5 of every ring be connected in tunnel.
When the power generation of tunnel water-filling, ring can be generated in lining concrete layer 2 with being continuously increased for hole internal water pressure
To tensile stress；Meanwhile with the continuous raising of water level in hole, water flow constantly can from bottom to top progress into circular ring shape flat jack
It is interior, and pressure is stepped up, and is applied prestressing force to lining concrete layer 2 and is generated circumferential compressive pre-stress.Due to tensile stress with
Compressive pre-stress generates simultaneously, and compressive pre-stress is numerically always greater than tensile stress, therefore is almost still " zero in lining concrete layer
Stress state ".On the contrary, when tunnel upper gate is closed, since water flow is connected with water flow in circular ring shape flat jack in hole,
Internal water pressure disappears simultaneously with the uniform water pressure in flat jack 4, therefore lining concrete layer restores original " zero stress state ".
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of intelligent prestressed concrete liner tunnel, it is characterised in that: include: country rock, multiple circular ring shape flat jacks
With lining concrete layer, multiple circular ring shape flat jacks are longitudinally uniformly arranged between lining concrete layer and country rock along hole, and
And independently pressurized ring one by one is also symmetrically arranged to along tunnel cross section, it is not connected between each ring, every ring flat jack
Between connected by joint steel pipe, and be connected to by the way that pipeline and tunnel are interior.
2. intelligent prestressed concrete liner tunnel according to claim 1, which is characterized in that the circular ring shape flat thousand
Jin top girth at circular ring shape absolute construction one by one, the inlet and outlet pipes of every ring be connected in tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432454.0A CN109404008A (en) | 2018-11-28 | 2018-11-28 | Intelligent prestressed concrete liner tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432454.0A CN109404008A (en) | 2018-11-28 | 2018-11-28 | Intelligent prestressed concrete liner tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404008A true CN109404008A (en) | 2019-03-01 |
Family
ID=65455912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811432454.0A Pending CN109404008A (en) | 2018-11-28 | 2018-11-28 | Intelligent prestressed concrete liner tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404008A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720138A (en) * | 2020-06-05 | 2020-09-29 | 中铁工程设计咨询集团有限公司 | Tunnel and underground engineering formwork lining supporting structure and supporting method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203393687U (en) * | 2013-06-26 | 2014-01-15 | 中国水利水电科学研究院 | Prestressed concrete lined tunnel structure and circular ring-shaped flat jack thereof |
| CN105332716A (en) * | 2015-11-18 | 2016-02-17 | 中国水利水电科学研究院 | Adaptive lining structure capable of bearing simultaneous actions of high internal and external water |
| CN205100992U (en) * | 2015-11-18 | 2016-03-23 | 中国水利水电科学研究院 | Self -adaptation lining cutting structure for can bear high interior extra income does simultaneously |
| CN107245989A (en) * | 2017-08-04 | 2017-10-13 | 北京中水科海利工程技术有限公司 | Bear the tunnel structure and its construction technology of external water pressure in height |
| CN209129621U (en) * | 2018-11-28 | 2019-07-19 | 中国水利水电科学研究院 | Intelligent prestressed concrete liner tunnel |
-
2018
- 2018-11-28 CN CN201811432454.0A patent/CN109404008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203393687U (en) * | 2013-06-26 | 2014-01-15 | 中国水利水电科学研究院 | Prestressed concrete lined tunnel structure and circular ring-shaped flat jack thereof |
| CN105332716A (en) * | 2015-11-18 | 2016-02-17 | 中国水利水电科学研究院 | Adaptive lining structure capable of bearing simultaneous actions of high internal and external water |
| CN205100992U (en) * | 2015-11-18 | 2016-03-23 | 中国水利水电科学研究院 | Self -adaptation lining cutting structure for can bear high interior extra income does simultaneously |
| CN107245989A (en) * | 2017-08-04 | 2017-10-13 | 北京中水科海利工程技术有限公司 | Bear the tunnel structure and its construction technology of external water pressure in height |
| CN209129621U (en) * | 2018-11-28 | 2019-07-19 | 中国水利水电科学研究院 | Intelligent prestressed concrete liner tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 赵研: "新型预应力混凝土衬砌压力隧洞技术研究", 水利水电技术 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720138A (en) * | 2020-06-05 | 2020-09-29 | 中铁工程设计咨询集团有限公司 | Tunnel and underground engineering formwork lining supporting structure and supporting method thereof |
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