CN103628895A - Large-deformation ground fissure section tunnel lining joint structure and construction method thereof - Google Patents
Large-deformation ground fissure section tunnel lining joint structure and construction method thereof Download PDFInfo
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- CN103628895A CN103628895A CN201310672697.2A CN201310672697A CN103628895A CN 103628895 A CN103628895 A CN 103628895A CN 201310672697 A CN201310672697 A CN 201310672697A CN 103628895 A CN103628895 A CN 103628895A
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Abstract
The invention relates to a large-deformation ground fissure section tunnel lining joint structure and a construction method thereof. The larger stratum deformation trend of a ground fissure section is very unfavorable for the security and long-term durability of a tunnel lining structure, and brings potential danger to train operating. An externally applied rubber waterstop shaped like a Chinese character 'qie' and an omega-shaped externally applied rubber waterstop are arranged at the inner and outer sides of a lining structure joint, and partial free extension is reserved in the lining joint through the rubber waterstops to adapt to the relative movement of lining structures at both sides of the joint in a certain period, so that the ground fissure section lining structure can adapt to the deformation trend of a stratum. The lining joint structure designed by the invention is a flexible structure, can effectively control the too great deformation potential energy and internal stress of the lining structure in the stratum displacement process, reduces the fissuring and leakage trend of the lining structure, and can meet the special requirements of the larger stratum deformation of the ground fissure section on the tunnel lining structure, and thus the one-hundred service life of the tunnel is ensured.
Description
Technical field
the invention belongs to construction of tunnel technical field, be specifically related to a kind of large deformation ground fissure section tunnel lining seam construction and construction process thereof.
Background technology
For the railway traffic engineering of current cities in China, shallow burial hidden digging tunnel is still in occupation of suitable ratio, especially in ultra-shallow earth-covered location, structure headroom is had specific (special) requirements location and malformation had to the regions such as specific (special) requirements location.The ability that ground fissure adapts to inhomogeneous deformation to running tunnel liner structure has specific (special) requirements, requires the maximum deformation quantity in century-old design period need reach 500mm(or larger), but also to meet the normal requirement of runing of train.But existing tunnel joint designs is mainly considered its water-proof function, but not it adapts to the ability of inhomogeneous deformation, the deformation joint that general shallow burial hidden digging tunnel arranges, during only meeting constructing tunnel and train operation, the liner structure dilatancy or the shrinkage strain that cause due to humidity or variations in temperature, the deformation requirements of crack section tunnel lining structure contentedly far away, this will have a strong impact on the quality and safety of ground fissure section running tunnel engineering, and existing joint designs theory is difficult to guarantee the design object of century-old engineering.
Summary of the invention
The object of this invention is to provide a kind of large deformation ground fissure section tunnel lining seam construction and construction process thereof, with the flexibility of seam self, stretch the liner structure relative displacement that regulates stratum deformation to cause, improve the ability that tunnel lining adapts to inhomogeneous deformation, realize the flexible construction of ground fissure section liner joint and the compatible deformation of liner structure.
The technical solution adopted in the present invention is:
Large deformation ground fissure section tunnel lining seam construction, includes the liner structure of liner joint both sides, it is characterized in that:
On the liner structure in the outside of liner joint, be fixed with and type external labeling type rubber fastening band, on the liner structure of the inner side of liner joint, be fixed with Ω type external labeling type rubber fastening band.
And type external labeling type rubber fastening band is enclosed type rubber fastening band, cross section be " and " font, in centre bore, be provided with the tabula band that is parallel to rubber fastening band band-like portions, form poriferous circular pore structure;
And type external labeling type rubber fastening band is fixed on the liner structure on both sides outside liner joint by crab-bolt.
Ω type external labeling type rubber fastening band is open rubber fastening band, and cross section is " Ω " shape;
Ω type external labeling type rubber fastening band, by keeper plate of steel and crab-bolt outside Ω type external labeling type rubber fastening band, is anchored on billet pre-buried in liner structure, thereby is fixed on the liner structure on both sides inside liner joint.
On the relative end face of liner joint both sides liner structure, be provided with end mould steel plate.
The dowel that billet and its inner side arrange is together embedded in liner structure in advance.
After the liner structure generation relative displacement of both sides, in the void area that the liner structure of relative settlement and ground interlayer form, inject backfill slurries, fixing welding angle steel between the relative liner structure rising and Ω type external labeling type rubber fastening band.
The construction process of large deformation ground fissure section tunnel lining seam construction, is characterized in that:
By following steps, realized:
Step 1: prefabricated liner structure, and inside liner joint pre-buried steel backing plate and dowel;
Step 2: end mould steel plate is fixed on the end face that liner joint both sides liner structure is relative;
Step 3: utilize crab-bolt by and type external labeling type rubber fastening band be fixed on the liner structure in liner joint outside;
Step 4: utilize keeper plate of steel and crab-bolt, Ω type external labeling type rubber fastening band is anchored on billet pre-buried in liner structure, be fixed on the liner structure of liner joint inner side simultaneously;
Step 5: the liner joint outside after distortion, the void area forming between liner structure and stratum, injects backfill slurries in time;
Step 6: the liner joint inner side after distortion, keeper plate of steel and crab-bolt are retightened on welding angle steel, further regulate the position of Ω type external labeling type rubber fastening band.
The present invention has the following advantages:
The present invention outside in tunnel lining structure seam be provided with can free-extension and type external labeling type rubber strip and Ω type external labeling type rubber strip, and the anchor system matching with external labeling type rubber strip, the elastomeric material and the anchoring material that relate to are conventional material, its corresponding size is general type, is convenient to processing and manufacturing; And type external labeling type rubber strip and the length in reserve of Ω type external labeling type rubber strip in seam, can be according to the relative displacement design of seam left and right sides liner structure; Left and right sides liner structure occurs after relative displacement, and the localized voids region forming between the liner structure outside of relative settlement and stratum, can be closely knit by the filling of backfill slurries, and the position of Ω type external labeling type rubber strip can be adjusted by welding angle steel inside seam.By the free-extension of reserved rubber strip in seam, the relative displacement of formation displacement or seam left and right sides liner structure, to can not form subsidiary stress to liner structure, can effectively avoid the risk of Lining Crack and seepage, reduce potential unsafe factor, in the application life that extends tunnel, have higher economic benefit and social benefit, in the engineerings such as urban track traffic, railway, highway, has wide practical use.
Accompanying drawing explanation
Fig. 1 is the seam construction figure before the relative displacement of seam left and right sides liner structure.
Fig. 2 is the seam construction figure of (right side declines, and rises in left side) after the relative displacement of seam left and right sides liner structure.
Fig. 3 is the seam construction figure of (left side declines, and rises on right side) after the relative displacement of seam left and right sides liner structure.
In figure, 1-liner structure, 2-and type external labeling type rubber fastening band, 3-Ω type external labeling type rubber fastening band, 4-end mould steel plate, 5-keeper plate of steel, 6-crab-bolt, 7-billet, 8-dowel, 9-welds angle steel, 10-backfill slurries.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention will be described in detail.
Large deformation ground fissure section tunnel lining seam construction involved in the present invention, the liner structure 1 that includes liner joint both sides, on the liner structure 1 in the outside of liner joint, be fixed with and type external labeling type rubber fastening band 2, on the liner structure 1 of the inner side of liner joint, be fixed with Ω type external labeling type rubber fastening band.Wherein, and type external labeling type rubber fastening band 2 is enclosed type rubber fastening band, cross section be " and " font, in centre bore, be provided with the tabula band that is parallel to rubber fastening band band-like portions, form poriferous circular pore structure.Its band-like portions disconnect from midline, separable to adapt to deformation when relative displacement occurs liner structure 1.And type external labeling type rubber fastening band 2 needs attaching nut, pad to use by crab-bolt 6() be fixed on the liner structure 1 on both sides outside liner joint.Ω type external labeling type rubber fastening band 3 is open rubber fastening band, and cross section is " Ω " shape.Ω type external labeling type rubber fastening band 3 utilizes keeper plate of steel 5 and crab-bolt 6, is anchored on the interior pre-buried billet 7 of liner structure 1, thereby is fixed on the liner structure 1 on both sides inside liner joint.Keeper plate of steel 5 and billet 7 are 10mm steel plate.Billet 7 is main to be embedded on liner structure 1 in advance by the dowel 8 of its inner side, and dowel is the reinforcing bar of long 0.5m, diameter 20mm.Billet 7 provides enough anchoring bearing capacities need to crab-bolt 6.And type external labeling type rubber fastening band 2 and Ω type external labeling type rubber fastening band 3 have enough length in reserve in seam domestic demand, to adapt to the relative displacement of liner joint both sides liner structure 1.
On the relative end face of liner joint both sides liner structure 1, being provided with end mould steel plate 4, is the thick steel plate of 10mm, can protect the damage that is not squeezed of seam inner rubber Water stop structure, and can assist rubber fastening band free-extension.
Both sides liner structure 1 occurs after relative displacement, the void area that the liner structure 1 of relative settlement and ground interlayer form, can fill closely knit by injecting in time backfill slurries 10, liner structure 1 for relative rising, by fixing welding angle steel 9 between Ω type external labeling type rubber fastening band 3 and liner structure 1, adjust the position of Ω type external labeling type rubber strip inside seam.
The construction process of large deformation ground fissure section tunnel lining seam construction, by following steps, realized:
Step 1: according to tunnel structure mechanical characteristic and structure requirement, prefabricated liner structure 1, and inside liner joint pre-buried steel backing plate 7 and dowel 8; Liner structure 1 is transported to job site and deposits on request, and the making of liner structure 1, transportation and stacking must meet the requirement of related specifications, and especially the planeness on liner structure 1 surface and cleannes must meet related request;
Step 2: in strict accordance with seam edge face structure pattern, hold the making of mould steel plate 4, end mould steel plate 4 is fixed on the end face that liner joint both sides liner structure 1 is relative, end mould steel plate 4 can be sticked in to liner joint end face, the size and shape of end mould steel plate 4 must be corresponding with the tectonic type of liner joint, plays the effect of protecting preferably reserved rubber fastening band in liner joint;
Step 3: in strict accordance with liner structure 1 pattern and material performance requirement thereof outside liner joint, carry out choosing or making of crab-bolt 6, utilize crab-bolt 6 by and type external labeling type rubber fastening band 2 be fixed on the liner structure 1 on both sides outside liner joint, want can guarantee in liner joint deformation process, and the stability under loading of type external labeling type rubber fastening band 2;
Step 4: in strict accordance with liner structure 1 pattern and material performance requirement thereof inside liner joint, carry out choosing or making of keeper plate of steel 5, utilize billet 7 pre-buried inside liner joint, keeper plate of steel 5 and crab-bolt 6, Ω type external labeling type rubber fastening band 3 is fixed on the liner structure 1 on both sides inside liner joint, want can guarantee in liner joint deformation process the stability under loading of Ω type external labeling type rubber fastening band 3;
Step 5: along with the increase of liner joint both sides liner structure 1 relative displacement, relatively between decline side liner structure 1 and stratum, certain localized voids will be there will be, should look the size and the slurries of injection backfill in time 10 that distribute in space, cubical contraction after 10 sclerosis of backfill slurries is little, it is high that consolidating strength is wanted, long durability also will meet related specifications requirement, to guarantee the good contact between liner structure 1 and stratum;
Step 6: along with the increase of liner joint both sides liner structure 1 relative displacement, in liner structure 1 one sides that relatively rise, in seam, reserved Ω type external labeling type rubber fastening band 3 length will progressively reduce, in order to adapt to different seam displacement requests, farthest bring into play the function of Ω type external labeling type rubber fastening band 3, welding angle steel 9 is set between liner structure 1 and Ω type external labeling type rubber fastening band 3, to regulate the position of Ω type external labeling type rubber fastening band 3, the size of welding angle steel 9 need meet relative configurations requirement, its intensity need guarantee stability under loading, its rigidity need meet deformation requirements.
To find out theoretically liner structure seam construction pattern or the joint filler that can adapt to ground fissure section large deformation requirement completely, under existing technical level and execution conditions, still have sizable difficulty, because the relative displacement trend of seam both sides liner structure 1 is inevitable to a certain extent in Practical Project, and the requirement of the structure of different displacement trend butt joints is also different, the seam construction pattern that can adapt at present large deformation requirement, still need carry out design and construction according to the basic principle of " flexible joint ".
Free-extension arranged outside and type external labeling type rubber fastening band 2 and Ω type external labeling type rubber fastening band 3 reserved part in seam in " flexible joint " of the present invention main finger seam, can coordinate the relative displacement of seam both sides liner structure 1, weaken or avoid the liner structure additional internal force that relative displacement causes, realize tunnel flexible construction longitudinally.Wherein, keeper plate of steel 5, crab-bolt 6, billet 7 can guarantee that with dowel 8 seam both sides liner structure 1 is occurring in obvious relative displacement situation, and type external labeling type rubber fastening band 2 can be fixed on outside in seam steadily with Ω type external labeling type rubber fastening band 3, end mould steel plate 4 can be protected in seam the damage that is not squeezed of reserved rubber fastening band, and can assist rubber fastening band free-extension, increase along with liner structure 1 relative displacement of seam both sides, in liner structure 1 one sides that relatively decline, reserve in seam and type external labeling type rubber fastening band 2 length reduce gradually, in seam, reserved Ω type external labeling type rubber fastening band 3 length increase gradually, and in liner structure 1 one sides that relatively rise, situation is just the opposite, relatively between decline side liner structure 1 and stratum, may form certain localized voids simultaneously, the timely injection of backfill slurries 10, can guarantee to form good contact between liner structure 1 and stratum, welding angle steel 9 is set in liner structure 1 bottom of relatively rising simultaneously, regulate the length in reserve of Ω type external labeling type rubber fastening band 3 in seam, to adapt to different seam displacement requests, and meet instructions for use and the requirement of body structure surface planeness of tunnel internal structure headroom.
In the situation that there is moderate finite deformation in stratum, in seam arranged outside and type external labeling type rubber fastening band 2 and Ω type external labeling type rubber fastening band 3, can guarantee that seam can carry out free-extension along with the relative displacement of both sides liner structure 1, the length of free-extension can be according to maximum displacement setting, generally can reach 500mm, even more, can significantly weaken the adverse effect of the longitudinal inhomogeneous deformation in tunnel to liner structure, the risk of tunnel slot and seepage is dropped to minimum level.
It is cited that content of the present invention is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading manual of the present invention, is claim of the present invention and contains.
Claims (7)
1. large deformation ground fissure section tunnel lining seam construction, includes the liner structure (1) of liner joint both sides, it is characterized in that:
On the liner structure in the outside of liner joint (1), be fixed with and type external labeling type rubber fastening band (2), on the liner structure of the inner side of liner joint (1), be fixed with Ω type external labeling type rubber fastening band.
2. large deformation ground fissure section tunnel lining seam construction according to claim 1, is characterized in that:
And type external labeling type rubber fastening band (2) is enclosed type rubber fastening band, cross section be " and " font, in centre bore, be provided with the tabula band that is parallel to rubber fastening band band-like portions, form poriferous circular pore structure;
And type external labeling type rubber fastening band (2) is fixed on the liner structure (1) on both sides outside liner joint by crab-bolt (6).
3. large deformation ground fissure section tunnel lining seam construction according to claim 2, is characterized in that:
Ω type external labeling type rubber fastening band (3) is open rubber fastening band, and cross section is " Ω " shape;
Ω type external labeling type rubber fastening band (3) is by Ω type external labeling type rubber fastening band (3) outer keeper plate of steel (5) and crab-bolt (6), be anchored in billet (7) pre-buried in liner structure (1) upper, thereby be fixed on the liner structure (1) on both sides inside liner joint.
4. large deformation ground fissure section tunnel lining seam construction according to claim 3, is characterized in that:
On the relative end face of liner joint both sides liner structures (1), be provided with end mould steel plate (4).
5. large deformation ground fissure section tunnel lining seam construction according to claim 4, is characterized in that:
Billet (7) is together embedded in liner structure (1) in advance with the dowel (8) that its inner side arranges.
6. large deformation ground fissure section tunnel lining seam construction according to claim 5, is characterized in that:
Both sides liner structure (1) occurs after relative displacement, in the void area that the liner structure of relative settlement (1) and ground interlayer form, inject backfill slurries (10), fixing welding angle steel (9) between the relative liner structure (1) rising and Ω type external labeling type rubber fastening band (3).
7. the construction process of large deformation ground fissure section tunnel lining seam construction, is characterized in that:
By following steps, realized:
Step 1: prefabricated liner structure (1), and inside liner joint pre-buried steel backing plate (7) and dowel (8);
Step 2: will hold mould steel plate (4) to be fixed on the end face that liner joint both sides liner structures (1) are relative;
Step 3: utilize crab-bolt (6) general and type external labeling type rubber fastening band (2) to be fixed on the liner structure (1) in liner joint outside;
Step 4: utilize keeper plate of steel (5) and crab-bolt (6), Ω type external labeling type rubber fastening band (3) is anchored in to billet (7) pre-buried in liner structure (1) upper, be fixed on the liner structure (1) of liner joint inner side simultaneously;
Step 5: the liner joint outside after distortion, the void area forming between liner structure (1) and stratum, injects backfill slurries (10) in time;
Step 6: the liner joint inner side after distortion, keeper plate of steel (5) and crab-bolt (6) are retightened at welding angle steel (9) above, further regulate the position of Ω type external labeling type rubber fastening band (3).
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Cited By (9)
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| CN104727835A (en) * | 2015-01-21 | 2015-06-24 | 重庆大学 | Leakage water stopping device for seam of tunnel lining and water stopping method |
| CN105756685A (en) * | 2016-05-03 | 2016-07-13 | 西南交通大学 | Segmental lining reinforcing type combined supporting structure |
| CN106351494A (en) * | 2016-10-20 | 2017-01-25 | 北京工业大学 | Self-resetting assembly type subway station flexible antiseismic structure |
| CN106437785A (en) * | 2016-10-11 | 2017-02-22 | 北京交通大学 | Dislocation-resistant combined tunnel supporting structure for crossing active faults |
| CN106437784A (en) * | 2016-10-11 | 2017-02-22 | 北京交通大学 | Dislocation-resistant combined tunnel support structure for passing through active broken course |
| CN107988852A (en) * | 2017-11-27 | 2018-05-04 | 中交隧道工程局有限公司 | The construction method of III plate-type non-fragment orbit new structures of tunnel location CRTS |
| CN108412506A (en) * | 2018-02-11 | 2018-08-17 | 中铁第勘察设计院集团有限公司 | Ground fissure region tunnel lining structure based on shield tunnel and its construction method |
| CN108643227A (en) * | 2018-05-07 | 2018-10-12 | 长安大学 | Urban Underground pipe gallery wears deformation joint structure and its construction method at ground fissure |
| CN113294180A (en) * | 2021-06-09 | 2021-08-24 | 中能建西北城市建设有限公司 | Waterproof construction of tunnel engineering ground crack area movement joint |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727835A (en) * | 2015-01-21 | 2015-06-24 | 重庆大学 | Leakage water stopping device for seam of tunnel lining and water stopping method |
| CN105756685A (en) * | 2016-05-03 | 2016-07-13 | 西南交通大学 | Segmental lining reinforcing type combined supporting structure |
| CN106437785A (en) * | 2016-10-11 | 2017-02-22 | 北京交通大学 | Dislocation-resistant combined tunnel supporting structure for crossing active faults |
| CN106437784A (en) * | 2016-10-11 | 2017-02-22 | 北京交通大学 | Dislocation-resistant combined tunnel support structure for passing through active broken course |
| CN106351494A (en) * | 2016-10-20 | 2017-01-25 | 北京工业大学 | Self-resetting assembly type subway station flexible antiseismic structure |
| CN106351494B (en) * | 2016-10-20 | 2019-09-27 | 北京工业大学 | A kind of Self-resetting assembled subway station flexible anti-shock structure |
| CN107988852A (en) * | 2017-11-27 | 2018-05-04 | 中交隧道工程局有限公司 | The construction method of III plate-type non-fragment orbit new structures of tunnel location CRTS |
| CN108412506A (en) * | 2018-02-11 | 2018-08-17 | 中铁第勘察设计院集团有限公司 | Ground fissure region tunnel lining structure based on shield tunnel and its construction method |
| CN108643227A (en) * | 2018-05-07 | 2018-10-12 | 长安大学 | Urban Underground pipe gallery wears deformation joint structure and its construction method at ground fissure |
| CN113294180A (en) * | 2021-06-09 | 2021-08-24 | 中能建西北城市建设有限公司 | Waterproof construction of tunnel engineering ground crack area movement joint |
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Application publication date: 20140312 |