CN109667602A - For preventing the construction method of concrete capping at two lining circular construction joints - Google Patents
For preventing the construction method of concrete capping at two lining circular construction joints Download PDFInfo
- Publication number
- CN109667602A CN109667602A CN201811432808.1A CN201811432808A CN109667602A CN 109667602 A CN109667602 A CN 109667602A CN 201811432808 A CN201811432808 A CN 201811432808A CN 109667602 A CN109667602 A CN 109667602A
- Authority
- CN
- China
- Prior art keywords
- lining
- rubber slab
- construction
- secondary lining
- formwork jumbo
- 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
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Classifications
-
- 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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- 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
- 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
Abstract
The invention discloses for preventing the construction method of concrete capping at two lining circular construction joints, by the sticker rubber slab on the wall surface of end before and after formwork jumbo, after casting concrete, the groove that cross section is inverted " v " is formed in the junction of adjacent secondary lining.Reduce concrete at two lining circular construction joints and provides safety assurance by capping for tunnel-liner.
Description
Technical field
The invention belongs to tunnel-liner technical fields, and in particular to for preventing applying for concrete capping at two lining circular construction joints
Work method.
Background technique
Currently, mass defects, the main cause such as the generally existing construction joint cracking of domestic railway tunnel, chip off-falling are trolley Zhi Li
Shi Dingsheng control is not in place.According to test standard requirement, demoulding time reaches 8Mpa control by concrete strength, and trolley props up coagulation immediately
Native intensity is not high, and does not take effective jacking control measure, pushes up tension on trolley formwork, the reason is that worry that spillage occurs,
Capping has poured concrete at the circular construction joint of completion, causes construction joint edge concrete cracking.Before delivering for a check to construction joint at
There is the concrete of chip off-falling risk all to cut, forms a large amount of irregular notches and buried water strip is exposed, so that constructing in recent years
Unit renovation difficulty in such problem is huge, not only spends high defect to renovate expense, but also seriously threaten railway
The safety of operation and personnel equipment.Therefore, it is badly in need of wanting one kind that two lining circular construction joints can be effectively prevent by the construction party of capping
Method reduces railway operation risk, regulation the risk and cost risk from source.
Summary of the invention
It is a kind of for preventing two technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, providing
The construction method for serving as a contrast concrete capping at circular construction joint, reduces concrete at two lining circular construction joints and is provided by capping for tunnel-liner
Safety assurance.
In order to solve the above technical problems, the technical solution adopted by the present invention is that, for preventing concrete at two lining circular construction joints
The construction method of capping, the construction method include the following steps:
Step A, first group of secondary lining of construction: formwork jumbo enters in tunnel, before the front end of the formwork jumbo
End and the rear end of follower head are provided with baffle, on the upper wall surface of front end and follower head and along the circumferential gluing one in tunnel
Rubber slab, each rubber slab is each located on the inside of the baffle of front end or rear end, and closely pastes with the inner wall of corresponding baffle
It closes；
The shape in the cross section of rubber slab is right angled triangle, and face where a right-angle side and formwork jumbo is front/rear
Two ends outside wall surface phase gluing；The inner wall of the baffle in face and corresponding end where another right-angle side fits closely；
The cement injection between former and later two baffles, applies secondary lining；After the completion of construction, rubber slab is removed；After dismounting,
The position of the former rubber slab of secondary lining front end forms low early and high after inclined-plane, the former rubber slab in the rear end of secondary lining
Position forms the inclined-plane that the front is high and the back is low.
Step B, construct adjacent next group of secondary lining: the formwork jumbo proceeds to that apply adjacent next group secondary
At lining cutting, again on the upper wall surface of end and along circumferential each one rubber slab of gluing in tunnel before and after the formwork jumbo；The rubber
The shape and adhesive means of offset plate are identical with step A；
The edge of the front end for the first group of secondary lining constructed is affixed on rear side of the follower head of above-mentioned formwork jumbo,
Cement injection between former and later two baffles, applies secondary lining；After the completion of construction, rubber slab is removed；After dismounting, in the secondary lining
The position of the former rubber slab of front end forms low early and high after inclined-plane, is formed in the position of the former rubber slab of the rear end of secondary lining
The inclined-plane that the front is high and the back is low；
The front end of the rear end of the secondary lining inclined-plane that the front is high and the back is low and first group of adjacent secondary lining it is preceding it is low after
Circumferential groove is formed between high inclined-plane, the shape in the cross section of the groove is inverted " v "；
Step C: step B is repeated, the construction of each group secondary lining is sequentially completed.
Further, the position at the both ends of the rubber slab is located at the short abutment wall of inverted arch of tunnel or so two respective sides and arch wall connects
Meet place.
Further, the height of the right-angle side perpendicular to end wall surface of the rubber slab is far below the height of baffle.
Further, it is 12m which, which effectively pours length,.
The present invention is for preventing the construction method of concrete capping at two lining circular construction joints from having the advantages that one, in template
Trolley end side and poured section two serve as a contrast concrete it is closely connected when, slow down to casting concrete end generate stress concentrate
Effect, and evaded the irregular crackle of circular construction joint to inside grooves by rubber slab release and transmitting portions stress, will apply
Work is stitched between crackle control in a groove, it is therefore prevented that concrete burr flash at construction joint.Two, rubber slab itself has elastic work
With by its elastic reaction, effectively the gap that may be present between casting concrete has been filled to template trolley surface and
And closure, it avoids after-pouring section concrete and has poured section formation of concrete in the spillage phenomenon being likely to occur vibrated, have
Effect prevent construction joint concrete spillage, reduce due to spillage cause concrete disintegration, voids and pits leakiness generate
Block risk, three, under the elastic reaction of rubber slab, to the top power of overlap during lining trolley Zhi Li play buffering make
With making to push up power distribution more evenly and act on concrete, it is therefore prevented that follower head and poured two lining concrete overlaps due to
The tension on trolley top causes two poured to serve as a contrast concrete and is crushed cracking；Four, compared with the prior art, reduce project
Cost extraneous expense is worth using for reference and promote.
Detailed description of the invention
Fig. 1 is the front schematic view using the tunnel of the method construction in the present invention.
Fig. 2 is the vertical section schematic diagram using the tunnel of the method construction in the present invention.
Wherein: a, tunnel；1, the construction joint between two neighboring secondary lining；2, trolley inner outline；3, first group it is secondary
Lining cutting；4, next group of adjacent secondary lining；5, rubber slab；6, groove.
Specific embodiment
The present invention is used to prevent the construction method of concrete capping at two lining circular construction joints, which includes following step
It is rapid: as illustrated in fig. 1 and 2:
For preventing the construction method of concrete capping at two lining circular construction joints, which includes the following steps:
Step A, first group of secondary lining 3 of construction: after the completion of tunnel a is excavated, formwork jumbo enters in tunnel a, and adjustment is fixed
Position is provided with gear in the position for applying first group of secondary lining 3, the rear end of the front-end and back-end head of the front end of formwork jumbo
Plate, on the upper wall surface of front end and follower head and along circumferential one rubber slab 5 of gluing in tunnel, before each rubber slab 5 is each located on
The inside of the baffle at end or rear end, and fitted closely with the inner wall of corresponding baffle；The position at the both ends of rubber slab 5 is located at
The short abutment wall of inverted arch of two respective side of tunnel or so and arch wall junction.After sticker on inspection, to meet and paste securely, neatly
Requirement；The shape in the cross section of above-mentioned rubber slab 5 is right angled triangle, and face where a right-angle side and formwork jumbo
Front/rear two ends outside wall surface phase gluing；The inner wall of the baffle in face and corresponding end where another right-angle side fits closely；
The cement injection between former and later two baffles, applies secondary lining；After the completion of construction, two lining concrete strengths reach rule
After provisioning request, rubber slab 5 is removed；After dismounting, formd in the position of the former rubber slab 5 of secondary lining front end low early and high after oblique
Face forms the inclined-plane that the front is high and the back is low in the position of the former rubber slab 5 of the rear end of secondary lining.In every group of Second Lining Construction
Afterwards, trolley two ends baffle is removed, formwork jumbo end of polishing is removed sundries and greasy dirt on formwork jumbo, blocked in template
Hole.Then start the construction of next section of secondary lining.
Step B, next group of adjacent secondary lining of construction: formwork jumbo, which proceeds to, applies next group of adjacent secondary lining
Place, again on the upper wall surface of end and along circumferential each one rubber slab 5 of gluing in tunnel before and after the formwork jumbo；The shape of rubber slab 5
And adhesive means are identical with step A；Trolley inner outline 2 shown in figure, the i.e. forwarding route of formwork jumbo；
The edge of the front end for the first group of secondary lining 3 constructed is affixed on rear side of the follower head of above-mentioned formwork jumbo,
The cement injection between former and later two baffles, applies secondary lining；After the completion of construction, rubber slab 5 is removed；It is secondary at this after dismounting
The position of the former rubber slab 5 of lining cutting front end forms low early and high after inclined-plane, in the position of the former rubber slab 5 of the rear end of secondary lining
Set the inclined-plane for foring that the front is high and the back is low；
Circumferential direction is formed between the inclined-plane of the front end of the inclined-plane of the rear end of the secondary lining and first group of adjacent secondary lining
Groove 6, the shape in the cross section of groove 6 are inverted " v "；The cross section of construction joint 1 between namely two neighboring secondary lining
Shape be inverted " v ".Meanwhile the sundries in groove 6 is cleared up in time.
Step C: step B is repeated, the construction of each group secondary lining is sequentially completed.
The height of the right-angle side perpendicular to end wall surface of above-mentioned rubber slab 5 is far below the height of baffle.The cross of rubber slab 5
Section size is typically chosen 20*50mm, tensile strength >=5Mpa.It is 12m that formwork jumbo, which effectively pours length,.
In the present invention, when tunnel starts to carry out two lining concreting, pass through the wall of the end before and after formwork jumbo
Sticker rubber slab 5 on face, after casting concrete, forming cross section in the junction of adjacent secondary lining is the recessed of inverted " v "
Slot 6 plays buffering to formwork jumbo and using rubber slab 5, reduces the neutralization raising sealing of stress collection between casting concrete
Effect makes trolley follower head and has poured two lining concrete overlaps since the tension on trolley top leads to the coagulation poured
Native side cracking, chip off-falling are greatly decreased, it is therefore prevented that and the after-pouring two of two group of two lining construction peak joint serves as a contrast the spillage problem of concrete,
And the cross section that systematicness is formd at the construction joint 1 between two neighboring secondary lining is the groove 6 of V-arrangement, also improves two linings
The apparent mass of concrete joint.In addition, it is therefore prevented that concrete burr flash at construction joint.In state of the art, tunnel
The construction of road secondary lining is with the following method: formwork jumbo follower head is served as a contrast close to section two has been poured, formwork jumbo follower head with
Having poured two lining concrete is adjacent to cambered surface with two linings by increasing top power, and formwork jumbo front end is separate
The lining of section two is poured, closure two is served as a contrast the space between trolley front end and preliminary bracing using baffle and blocked by formwork jumbo front end
Afterwards, two lining concrete of formwork for placing trolley positioning good position.Top power is increased, to the secondary lining active force of casting concrete
Greatly, it is easy to appear crack.
Claims (4)
1. for preventing the construction method of concrete capping at two lining circular construction joints, which is characterized in that the construction method includes as follows
Step:
Step A, first group of secondary lining (3) of construction: formwork jumbo enters in tunnel (a), the front end of the formwork jumbo
The rear end of front-end and back-end head is provided with baffle, on the upper wall surface of the front end and follower head and circumferential along tunnel
One rubber slab of gluing (5), each rubber slab (5) are each located on the inside of the baffle of front end or rear end, and with corresponding baffle
Inner wall fits closely；
The shape in the cross section of the rubber slab (5) is right angled triangle, and before face where a right-angle side and formwork jumbo/
Two ends outside wall surface phase gluing afterwards；The inner wall of the baffle in face and corresponding end where another right-angle side fits closely；
The cement injection between former and later two baffles, applies secondary lining；After the completion of construction, remove rubber slab (5)；After dismounting,
The position of the former rubber slab (5) of secondary lining front end forms low early and high after inclined-plane, the former rubber in the rear end of secondary lining
The position of plate (5) forms the inclined-plane that the front is high and the back is low；
Step B, construct adjacent next group of secondary lining (4): the formwork jumbo proceeds to that apply adjacent next group secondary
At lining cutting, again on the upper wall surface of end and along circumferential each one rubber slab of gluing (5) in tunnel before and after the formwork jumbo；Institute
Shape and the adhesive means for stating rubber slab (5) are identical with step A；
The edge of the front end for the first group of secondary lining (3) constructed is affixed on rear side of the follower head of the formwork jumbo,
Cement injection between former and later two baffles, applies secondary lining；After the completion of construction, remove rubber slab (5)；It is secondary at this after dismounting
The position of the former rubber slab (5) of lining cutting front end forms low early and high after inclined-plane, the former rubber slab (5) in the rear end of secondary lining
Position form the inclined-plane that the front is high and the back is low；
Circumferential groove is formed between the inclined-plane of the front end of the inclined-plane of the rear end of the secondary lining and first group of adjacent secondary lining
(6), the shape in the cross section of the groove (6) is inverted " v "；
Step C: step B is repeated, the construction of each group secondary lining is sequentially completed.
2. according to claim 1 for preventing the construction method of concrete capping at two lining circular construction joints, which is characterized in that
The position at the both ends of the rubber slab (5) is located at the short abutment wall of inverted arch and the arch wall junction of tunnel or so two respective sides.
3. according to claim 2 for preventing the construction method of concrete capping at two lining circular construction joints, which is characterized in that
The height of the right-angle side perpendicular to end wall surface of the rubber slab (5) is far below the height of baffle.
4. according to claim 3 for preventing the construction method of concrete capping at two lining circular construction joints, which is characterized in that
It is 12m that the formwork jumbo, which effectively pours length,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432808.1A CN109667602A (en) | 2018-11-28 | 2018-11-28 | For preventing the construction method of concrete capping at two lining circular construction joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811432808.1A CN109667602A (en) | 2018-11-28 | 2018-11-28 | For preventing the construction method of concrete capping at two lining circular construction joints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109667602A true CN109667602A (en) | 2019-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811432808.1A Pending CN109667602A (en) | 2018-11-28 | 2018-11-28 | For preventing the construction method of concrete capping at two lining circular construction joints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109667602A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130938A (en) * | 2019-06-19 | 2019-08-16 | 中铁十九局集团第六工程有限公司 | The Wedge-type sealing device and its construction method of a kind of tunnel-liner longitudinal direction construction joint |
| CN114941258A (en) * | 2022-06-23 | 2022-08-26 | 中铁十八局集团有限公司 | Anti-cracking construction method for concrete track bed slab of CRTS I type double-block ballastless track of high-speed railway tunnel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11117690A (en) * | 1997-10-15 | 1999-04-27 | Kumagai Gumi Co Ltd | Method for forming blockout at cross joint of lining concrete in tunnel |
| CN204283448U (en) * | 2014-12-01 | 2015-04-22 | 贺均 | concrete lining template and tunnel lining trolley |
| CN104564107A (en) * | 2014-12-31 | 2015-04-29 | 中国建筑第五工程局有限公司 | Construction method for pre-positioning water stop belt of setting arc-shaped die of quadratic lining concrete end head |
| CN206513379U (en) * | 2017-02-18 | 2017-09-22 | 中铁华铁工程设计集团有限公司 | Lining construction reserves the Tunnel Second Lining formwork jumbo of V-groove structure |
| 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 |
| CN108843349A (en) * | 2018-09-12 | 2018-11-20 | 中铁二局第工程有限公司 | A kind of constructing tunnel two lining trolleys and its application method |
-
2018
- 2018-11-28 CN CN201811432808.1A patent/CN109667602A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11117690A (en) * | 1997-10-15 | 1999-04-27 | Kumagai Gumi Co Ltd | Method for forming blockout at cross joint of lining concrete in tunnel |
| CN204283448U (en) * | 2014-12-01 | 2015-04-22 | 贺均 | concrete lining template and tunnel lining trolley |
| CN104564107A (en) * | 2014-12-31 | 2015-04-29 | 中国建筑第五工程局有限公司 | Construction method for pre-positioning water stop belt of setting arc-shaped die of quadratic lining concrete end head |
| CN206513379U (en) * | 2017-02-18 | 2017-09-22 | 中铁华铁工程设计集团有限公司 | Lining construction reserves the Tunnel Second Lining formwork jumbo of V-groove structure |
| 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 |
| CN108843349A (en) * | 2018-09-12 | 2018-11-20 | 中铁二局第工程有限公司 | A kind of constructing tunnel two lining trolleys and its application method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130938A (en) * | 2019-06-19 | 2019-08-16 | 中铁十九局集团第六工程有限公司 | The Wedge-type sealing device and its construction method of a kind of tunnel-liner longitudinal direction construction joint |
| CN114941258A (en) * | 2022-06-23 | 2022-08-26 | 中铁十八局集团有限公司 | Anti-cracking construction method for concrete track bed slab of CRTS I type double-block ballastless track of high-speed railway tunnel |
| CN114941258B (en) * | 2022-06-23 | 2023-05-23 | 中铁十八局集团有限公司 | Anti-cracking construction method for CRTS I type double-block ballastless track concrete track slab of high-speed railway tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 511400 No. 2, West Side of Industrial Fourth Road, Mingzhuwan Starting Zone, Nansha District, Guangzhou City, Guangdong Province Applicant after: China Railway Tunnel Bureau Group Co Ltd Applicant after: China Railway Tunnel Survey and Design Research Institute Co., Ltd. Address before: 471000 No.3 Hospital of Zhuangyuan Honglu, Laocheng District, Luoyang City, Henan Province Applicant before: China Railway Tunnel Bureau Group Co Ltd Applicant before: China Railway Tunnel Survey and Design Research Institute Co., Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190423 |