CN206592135U - Water-conveyance tunnel concrete lining induces crack structure - Google Patents
Water-conveyance tunnel concrete lining induces crack structure Download PDFInfo
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- CN206592135U CN206592135U CN201720262981.6U CN201720262981U CN206592135U CN 206592135 U CN206592135 U CN 206592135U CN 201720262981 U CN201720262981 U CN 201720262981U CN 206592135 U CN206592135 U CN 206592135U
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- tunnel
- lining
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- reinforcing bar
- waterstop
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Abstract
The concrete lining of the utility model water-conveyance tunnel induces crack structure, is made up of circumferential weld otch, back of the body space and waterstop；Circumferential weld otch is located at tunnel lining inner surface, is, along the circumferentially distributed wedge-formed incision of tunnel, directly to be poured and formed as template by the joint-cutting steel loop being fixed on telescoping steel form.Carry on the back space and be located at tunnel lining outer surface, it is adjacent with tunnel wall or once supporting surface, it is, along the circumferentially distributed semiclosed space of tunnel, tunnel lining to be separated using default caulking material half and formed.Waterstop is located between circumferential weld otch and back of the body space, the position of design lining thickness half is arranged at, using rubber fastening band or rubber watertight strip.The utility model is while controlling the substantive parting spacing of lining cutting to take specification lower limit 6m, telescoping steel form single, which pours length, can exceed upper limit 12m as defined in specification, effectively realize that multistage lining concrete is synchronously poured, ring is automatic into seam, while crack probability of happening is reduced, construction speed is dramatically speeded up.
Description
Technical field
The utility model is related to the tunnel concrete liner induction crack structure in Hydraulic and Hydro-Power Engineering, and in particular to a kind of defeated
Water tunnel concrete liner induces crack structure.Water-conveyance tunnel carries out lining construction using telescoping steel form, can Multi-section concrete lining cutting
Synchronously pour, ring sets seam automatically, so as to reduce the probability of crack generation, and dramatically speed up construction speed.
Background technology
Hydraulic and Hydro-Power Engineering water-conveyance tunnel is subjected to inside and outside hydraulic pressure, concrete lining once ftractureing, no under different operating modes
The steel bar corrosion in concrete lining can only be accelerated, the stability and security of tunnel, therefore, water-conveyance tunnel are also affected when serious
Lining concrete prevention and control are the focus for improving tunnel engineering structure durability.
Construction time maximally effective lining concrete crack control measures is to carry out reasonable parting to lining concrete structure.Specification will
Ask and pour section length and can use 6~12m, section length is shorter, and fracture prevention and control are more favourable；However, too short section length
Construction speed can be influenceed again, and the overall duration will be directly affected for long distance water transfer tunnel.
Conventional concrete construction joint parting uses joint-cutting mode, but in water-conveyance tunnel, hole wall is circular or city mostly
Door hole type, grooving machine is difficult to carry out ring joint-cutting, and joint-cutting process influences whether pouring for next section of lining concrete, and influence is applied
Work progress, in addition, joint-cutting can also greatly increase construction costs, therefore, joint-cutting mode is not applied in water-conveyance tunnel.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art to induce there is provided a kind of water-conveyance tunnel concrete lining
Crack structure, on the one hand can reduce the probability of happening in crack, and rule of surface is attractive in appearance, on the other hand also can accelerating construction progress, simultaneously
Reduce investment outlay.
The technical scheme that the utility model is used is：Water-conveyance tunnel concrete lining induce crack structure, by circumferential weld otch,
Carry on the back space and waterstop composition；Circumferential weld otch is located at tunnel lining inner surface, is along the circumferentially distributed wedge-shaped aperture of tunnel, by tunnel
The collar extension of hole lining cutting inner surface side is big, small by the internal orifice of tunnel lining interior side；Carry on the back space and be located at tunnel lining outer surface,
It is adjacent with tunnel wall or once supporting surface, it is that, along the circumferentially distributed semiclosed space of tunnel, depth is about that tunnel lining is thick
The half of degree, separates tunnel lining using default caulking material half and is formed, and forms the caulking material of back of the body space and can use low hair
Foamed flitch, deal board leach blue or green Chinese fir board, and caulking material is fixed using longitudinally fixed reinforcing bar and radially fixed reinforcing bar.
Waterstop is located between circumferential weld otch and back of the body space, may be disposed at the position of design lining thickness half, can be stopped using rubber
Water band or rubber watertight strip；Using need to arrange that longitudinally fixed reinforcing bar colligation positions to waterstop during rubber fastening band,
The longitudinally fixed reinforcing bar of the longitudinally fixed reinforcing bar of fixed rubber fastening band and fixed caulking material passes through radially embedding rock reinforcing bar
Fixed with tunnel wall, radially embedding rock reinforcing bar one end is anchored in tunnel wall, the other end and longitudinally fixed reinforcing bar using Anchor Agent
It is welded and fixed；During using rubber watertight strip, rubber watertight strip both sides steel side is directly consolidated with radially embedding rock reinforcement welding
It is fixed.
The circumferential weld otch uses telescoping steel form lining construction, utilizes the joint-cutting steel loop being fixed on telescoping steel form steel form
Directly pour and form, steel form is columnar structured, and the chassis and driving structure inside telescoping steel form are passed through together with joint-cutting steel loop
Side-top arch concrete of the active window for the tunnel lining that vibrates is additionally provided with operation, steel form.
The attractive joint pour every time before all should on joint-cutting steel loop brushing releasing agent, to ensure quality of mold release, formation
Circumferential weld cut surface is smooth attractive in appearance.
The attractive joint spacing can use specification lower limit 6m, can be set on a telescoping steel form together, can also be simultaneously
Multiple tracks is set.When setting multiple tracks attractive joint simultaneously, telescoping steel form total length meets the current of tunnel plane or longitudinal turning site
It is required that.
Required according to convenient construction, attractive joint can be used in the circle or horseshoe tunnel liner structure of integrally closed,
It can be used for bottom plate and individually pour to set seam, only crown and two side walls set flat circular, the flat shape of a hoof or circle of attractive joint
Encircle in stalk section.
The longitudinally fixed reinforcing bar, radially fixed reinforcing bar and the embedding rock reinforcing bar of radial direction are referred to as fixture.
The beneficial effects of the utility model are：
1) back of the body space caulking material and waterstop in attractive joint can in advance be buried before pouring, in control lining cutting essence
While parting spacing takes specification lower limit 6m, telescoping steel form single, which pours length, can exceed upper limit 12m as defined in specification, reduce
While the probability of happening of crack, construction speed is dramatically speeded up；
2) attractive joint cambridge ring seaming and cutting mouthful demoulding facility, because the Reinforcement in the lining cutting of attractive joint position is to disconnect
, lack the protection of longitudinal reinforcement, crack can be induced to produce and to depths develop, the development and extension in crack inside otch
It is induced to carry out inside circumferential weld otch, lining cutting surface joint-cutting rule is attractive in appearance；
3) induction crack structure is automatically formed after the tunnel lining demoulding, without increasing grooving machine joint-cutting expense, waterstop
Quantities is similar with setting the engineering that conventional construction is stitched, it is only necessary to more fixed reinforcing bars, with respect to reduced investment for joint-cutting.
Brief description of the drawings
Fig. 1 is the flat circular water-conveyance tunnel parting layout drawing of the utility model embodiment；
Fig. 2 is the flat circular water-conveyance tunnel telescoping steel form cross-sectional view of the utility model embodiment；
Fig. 3 is the utility model embodiment attractive joint position detail view；
Fig. 4 is the wedge-shaped joint-cutting steel loop sectional drawing of the utility model embodiment.
In figure：1- induces crack structure；11- circumferential weld otch；12- carries on the back space；13- waterstops；2- tunnel linings；21- bottom plates
Concrete lining；22- side-top arch concrete lining cutting；23- ring steel bar stresses；24- Reinforcements；25- conventional constructions are stitched；
3- caulking materials；4- telescoping steel forms；41- chassis and driving structure；42- steel forms；43- joint-cutting steel loops；44- active windows；5-
Fixture；The longitudinally fixed reinforcing bars of 51-；The radially fixed reinforcing bars of 52-；The embedding rock reinforcing bar of 53- radial directions；6- tunnel walls.
Embodiment
Below in conjunction with the accompanying drawings and embodiment, the utility model is described in further detail.
As shown in Figures 1 to 4, the concrete lining of the utility model water-conveyance tunnel induction crack structure 1, by circumferential weld otch 11,
Back of the body space 12 and waterstop 13 are constituted.Circumferential weld otch 11 is located at the inner surface of tunnel lining 2, is along the circumferentially distributed wedged hole of tunnel
Mouthful, by the internal orifice of tunnel lining 2 interior side small, circumferential weld otch 11 depth big by the collar extension of the inner surface side of tunnel lining 2
12cm or so, collar extension Breadth Maximum about 2cm.Carry on the back space 12 and be located at the outer surface of tunnel lining 2, with tunnel wall 6 or once supporting
Surface is adjacent, is that slit width about 2cm, depth is about the half of the thickness of tunnel lining 2 along tunnel circumferentially distributed semiclosed space,
Tunnel lining 2 is separated using default caulking material 3 half and formed, the caulking material 3 for forming back of the body space 12 can be using low ratio foamed modeling
Flitch, deal board leach blue or green Chinese fir board, and caulking material 3 is consolidated using longitudinally fixed reinforcing bar 51 and radially fixed reinforcing bar 52
It is fixed.Waterstop 13 is located between circumferential weld otch 11 and back of the body space 12, is arranged at the position of design lining thickness half, can use
Rubber fastening band or rubber watertight strip；Using need to arrange the longitudinally fixed colligation of reinforcing bar 51 to waterstop 13 during rubber fastening band
Positioned, the longitudinally fixed reinforcing bar 51 of the longitudinally fixed reinforcing bar 51 of fixed rubber fastening band and fixed caulking material passes through
Radially embedding rock reinforcing bar 53 is fixed with tunnel wall 6, and embedding one end of rock reinforcing bar 53 is anchored in tunnel wall 6, the other end using Anchor Agent
It is welded and fixed with longitudinally fixed reinforcing bar 51；During using rubber watertight strip, rubber watertight strip both sides steel side is directly and footpath
It is welded and fixed to embedding rock reinforcing bar 53.
The circumferential weld otch 11 uses the lining construction of telescoping steel form 4, using being fixed on cutting on the steel form 42 of telescoping steel form 4
Seam steel loop 43, which is directly poured, to be formed, and steel form 42 is columnar structured, and the platform inside telescoping steel form 4 is passed through together with joint-cutting steel loop 43
Car and driving structure 41 are operated, and side-top arch concrete of the active window 44 for the tunnel lining 2 that vibrates is additionally provided with steel form 42
22。
It is described induction crack structure 1 every time pour before all should on joint-cutting steel loop 43 brushing releasing agent, to ensure quality of mold release,
The surfacing of circumferential weld otch 11 of formation is attractive in appearance.
The induction spacing of crack structure 1 takes specification lower limit 6m, can be set on a telescoping steel form 4 together, can also
Multiple tracks is set simultaneously.When setting multiple tracks induction crack structure 1 simultaneously, the total length of telescoping steel form 4 meets tunnel plane or longitudinal direction is turned
The current requirement at position.
Required according to convenient construction, induction crack structure 1 can be used for the circle or horseshoe tunnel lining cutting knot of integrally closed
In structure, it can be used for bottom plate and individually pour to set seam, only crown and two side walls set the flat circular, flat of induction crack structure 1
In the shape of a hoof or circular arch stalk section.
The longitudinally fixed reinforcing bar 51, radially fixed reinforcing bar 52 and the embedding rock reinforcing bar 53 of radial direction are referred to as fixture 5.
Induce the method to set up of crack structure 1 as follows：
A. the smooth place for needing to carry out the hole section of lining cutting, for flat circular tunnel, first constructs and completes water-conveyance tunnel bottom
The tunnel lining 2 in portion, and the guide rail that auxiliary telescoping steel form is promoted is laid on the surface of tunnel lining 2 of water-conveyance tunnel bottom in advance；
B. colligation pours the Reinforcement 24 and ring steel bar stress 23 of section, will need to be indulged in induction crack structure 1 position
Disconnected to steel bar stress 24, break distance 10cm, that is, induce each reserved one times steel bar end protection thickness in the both sides of crack structure 1
Degree；
C. the caulking material 3 and waterstop 13 of induction crack structure 1 position are fixed：In the position of induction crack structure 1 for pouring section
The embedding rock reinforcing bar 53 of fixed radial, passes through caulking material 3 using longitudinally fixed reinforcing bar 51 and is welded with radially embedding rock reinforcing bar 53, so that
The radial displacement of fixed caulking material 3, is clamped so as to fixed caulking material in the both sides of caulking material 3 using radially fixed reinforcing bar 52
3 length travel, radially fixed reinforcing bar 52 is welded with longitudinally fixed reinforcing bar 51；Waterstop is fixed by longitudinally fixed reinforcing bar 51 again
13, longitudinally fixed reinforcing bar 51 is welded with radially embedding rock reinforcing bar 53；
D. in the steel form 42 and the external coating releasing agent of joint-cutting steel loop 43 of telescoping steel form 4, to ensure circumferential weld otch 11
Surface finish, the brushing releasing agent of joint-cutting steel loop 43 is tackled before pouring every time, and ensures its surface without more than concrete residue
Stay, telescoping steel form 4 is advanced into along track and pours section and positions；
E. the side and roof arch that section carries out tunnel lining 2 is poured from 44 pairs of the active window of telescoping steel form 4 using pump concrete
Concrete lining 22 is poured and operation of vibrating；
F. poured and next step a to step c for pouring section is carried out before the section demoulding；
G. it is stripped after reaching the concrete initial set intensity of tunnel lining 2 to having poured section, telescoping steel form 4 is used during the demoulding
On chassis and hydraulic system 41, make steel form 42 and joint-cutting firm ring 43 on telescoping steel form 4 radially contracted, so that punching block
Plate 42 disengages concrete surface with the firm ring 43 of joint-cutting, and a bright and clean smooth circumferential weld otch 11 of circle is formed in induction crack structure 1 position；
H. step d and step e is carried out to next section that pours, circulation construction successively.
Claims (6)
1. water-conveyance tunnel concrete lining induces crack structure, it is characterised in that：It is by circumferential weld otch, back of the body space and waterstop group
Into；The circumferential weld otch is located at tunnel lining inner surface, is along the circumferentially distributed wedge-shaped aperture of tunnel, by tunnel lining inner surface
The collar extension of side is big, small by the internal orifice of tunnel lining interior side；The back of the body space is located at tunnel lining outer surface, with tunnel
Wall or once supporting surface are adjacent, are, along the circumferentially distributed semiclosed space of tunnel, partly to separate tunnel using default caulking material
Lining cutting and formed, caulking material is fixed using longitudinally fixed reinforcing bar and radially fixed reinforcing bar；The waterstop is located at described
Between circumferential weld otch and the back of the body space.
2. water-conveyance tunnel concrete lining according to claim 1 induces crack structure, it is characterised in that：The back of the body space
Depth is the half of tunnel lining thickness；The waterstop is arranged at the position of design lining thickness half.
3. water-conveyance tunnel concrete lining according to claim 1 induces crack structure, it is characterised in that：Described waterstop
Using rubber fastening band or rubber watertight strip；When described waterstop uses rubber fastening band, longitudinally fixed reinforcing bar is set
Waterstop is fixed, the longitudinally fixed reinforcing bar of the longitudinally fixed reinforcing bar of fixed rubber fastening band and fixed caulking material is equal
Fixed by radially embedding rock reinforcing bar with tunnel wall, radially embedding rock reinforcing bar one end is anchored in tunnel wall using Anchor Agent, another
End is fixed with longitudinally fixed reinforcement welding；When described waterstop uses rubber watertight strip, rubber watertight strip both sides
Steel side is directly fixed with radially embedding rock reinforcement welding.
4. water-conveyance tunnel concrete lining according to claim 1 induces crack structure, it is characterised in that：The circumferential weld otch
Using telescoping steel form lining construction, directly poured and formed using the joint-cutting steel loop being fixed on telescoping steel form steel form, steel form
To be columnar structured；Side-top arch concrete of the steel form provided with active window for the tunnel lining that vibrates.
5. water-conveyance tunnel concrete lining according to claim 4 induces crack structure, it is characterised in that：The attractive joint exists
Set together on one telescoping steel form, or multiple tracks is set simultaneously.
6. the water-conveyance tunnel concrete lining induction crack structure according to claim 4 or 5, it is characterised in that：The induction
Seam is painted with releasing agent before pouring every time on joint-cutting steel loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720262981.6U CN206592135U (en) | 2017-03-17 | 2017-03-17 | Water-conveyance tunnel concrete lining induces crack structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720262981.6U CN206592135U (en) | 2017-03-17 | 2017-03-17 | Water-conveyance tunnel concrete lining induces crack structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206592135U true CN206592135U (en) | 2017-10-27 |
Family
ID=60124507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720262981.6U Withdrawn - After Issue CN206592135U (en) | 2017-03-17 | 2017-03-17 | Water-conveyance tunnel concrete lining induces crack structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN206592135U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930778A (en) * | 2017-03-17 | 2017-07-07 | 浙江省水利水电勘测设计院 | A kind of water-conveyance tunnel concrete lining induces crack structure and method to set up |
| CN108442937A (en) * | 2018-02-01 | 2018-08-24 | 中铁十二局集团有限公司 | A kind of V-arrangement seam molding machine and its technique |
| CN112211650A (en) * | 2020-09-04 | 2021-01-12 | 临沂城投地产有限公司 | Method for preventing and controlling cast-in-place concrete lining structure cracks |
-
2017
- 2017-03-17 CN CN201720262981.6U patent/CN206592135U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930778A (en) * | 2017-03-17 | 2017-07-07 | 浙江省水利水电勘测设计院 | A kind of water-conveyance tunnel concrete lining induces crack structure and method to set up |
| CN106930778B (en) * | 2017-03-17 | 2019-12-17 | 浙江省水利水电勘测设计院 | water delivery tunnel concrete lining induced joint structure and setting method |
| CN108442937A (en) * | 2018-02-01 | 2018-08-24 | 中铁十二局集团有限公司 | A kind of V-arrangement seam molding machine and its technique |
| CN112211650A (en) * | 2020-09-04 | 2021-01-12 | 临沂城投地产有限公司 | Method for preventing and controlling cast-in-place concrete lining structure cracks |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171027 Effective date of abandoning: 20191217 |
|
| AV01 | Patent right actively abandoned |