CN107524458B - Tunnel lining structure with tunnel bottom reserved deformation - Google Patents
Tunnel lining structure with tunnel bottom reserved deformation Download PDFInfo
- Publication number
- CN107524458B CN107524458B CN201710766637.5A CN201710766637A CN107524458B CN 107524458 B CN107524458 B CN 107524458B CN 201710766637 A CN201710766637 A CN 201710766637A CN 107524458 B CN107524458 B CN 107524458B
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- Prior art keywords
- tunnel
- inverted arch
- arch
- filling layer
- deformation
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 17
- 239000011435 rock Substances 0.000 claims description 5
- 239000011372 high-strength concrete Substances 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 235000015076 Shorea robusta Nutrition 0.000 description 2
- 244000166071 Shorea robusta Species 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007619 statistical method Methods 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A tunnel lining structure with a tunnel bottom reserved deformation amount enables the tunnel lining structure to have certain resistance to tunnel bottom bulging deformation, and therefore the service life of the lining structure is prolonged. The tunnel lining structure comprises a full-annular secondary lining formed by a vault section, an inverted arch section and two arch wall sections, and an inverted arch filling layer is arranged on the inverted arch section. The upper surface of inverted arch filling layer is the cambered surface of indent, and the fixed reinforced concrete bottom plate that extends along tunnel longitudinal direction that sets up between the arch foot position of both sides arch wall section on the inverted arch filling layer forms the reservation deformation groove between the bottom surface of this reinforced concrete bottom plate and the upper surface of inverted arch filling layer.
Description
Technical Field
The invention relates to a novel tunnel lining structure, in particular to a tunnel lining structure suitable for a tunnel bottom upper drum with unknown reasons.
Background
The tunnel lining deforms under the action of surrounding rock pressure, and typical deformation characteristics are represented by vault sinking and tunnel bottom bulging. In general, the reserved deformation amount is designed at the arch wall part according to engineering experience during tunnel design, so that the tunnel deformation is prevented from invading building limit during construction. The inverted arch of the tunnel structure with conventional design is provided with filling concrete, the deformation amount is not reserved for the inverted arch of the tunnel, and once the tunnel is subjected to settlement or bulging deformation during operation, the deformation amount can be directly reflected to the filling surface of the inverted arch in the tunnel, and the deformation of the track can be caused for a railway tunnel, so that the driving safety is endangered; for highway tunnels, the longitudinal smoothness of the road surface is caused, and serious traffic accidents are caused.
According to the investigation results of tunnel defect sites at home and abroad, the bottom structure of many railway tunnels starts to generate different degrees of cracking, breakage, bottom drum and other defect phenomena in the operation period and even in the construction period, so that the rail at the upper part of the bottom plate is unsmooth, and the operation safety and the operation efficiency of a train are seriously affected, and therefore, the defect of the bottom structure of the tunnel is more and more focused and valued by engineering staff. Table 1 is an investigation situation of the bottom structure damage of the tunnel at home and abroad, and the table analyzes and counts the position of the damage, the geological situation of the damage section, the damage occurrence situation and the like.
Table 1 statistics table for tunnel bottom structure damage at home and abroad
As shown by the statistical analysis results in Table 1, the occurrence of tunnel bottom bulge diseases is possible in the case of groundwater development or no groundwater development, and tunnel bottom bulging diseases mostly occur in lithology sections such as mudstones, sandstones, shales and interbedded areas thereof, the layer thickness is thin-medium thick, and the occurrence is slow inclination.
Therefore, tunnels are built in mudstones, sandstones, shales and interbedded surrounding rocks thereof, and the phenomenon of bulging at the tunnel bottom is more prominent. At present, a passive repair measure is generally adopted for tunnel bottom bulging diseases, namely, the tunnel bottom structure of the upper bulge section is removed and reworked, and the measure not only can adversely affect the construction period and the construction cost of engineering, but also can not fundamentally solve the problem of tunnel bottom bulging. Engineering experience shows that even after the damaged tunnel bottom structure is removed and replaced, the tunnel bottom continuously bulges. Therefore, in order to radically cure the tunnel bottom continuous bulging defect, improvement of tunnel structure and surrounding rock deformation control technology should be started.
Disclosure of Invention
The invention aims to solve the technical problem of providing a tunnel lining structure with a tunnel bottom reserved deformation amount, so that the tunnel lining structure has a certain capability of resisting tunnel bottom bulging deformation, and the service life of the lining structure is prolonged.
The technical scheme adopted for solving the technical problems is as follows:
the invention relates to a tunnel lining structure with tunnel bottom reserved deformation, which comprises a full-annular secondary lining formed by a vault section, an inverted arch section and arch wall sections at two sides, wherein an inverted arch filling layer is arranged on the inverted arch section, and is characterized in that: the upper surface of inverted arch filling layer is the cambered surface of indent, and the fixed reinforced concrete bottom plate that extends along tunnel longitudinal direction that sets up between the arch foot position of both sides arch wall section on the inverted arch filling layer forms the reservation deformation groove between the bottom surface of this reinforced concrete bottom plate and the upper surface of inverted arch filling layer.
And arch foot parts of the arch wall sections at two sides are longitudinally provided with foot locking anchor rods or anchor cables which are anchored in surrounding rocks of the tunnel at intervals along the tunnel, and the outer ends of the foot locking anchor rods or anchor cables at two sides are respectively connected with one lateral end of the reinforced concrete bottom plate in an anchoring manner.
The invention has the beneficial effects that the reserved deformation groove is arranged in the inverted arch filling, so that a certain deformation space is provided for the tunnel bottom upper drum, the tunnel bottom upper drum is ensured not to cause the upper drum of the road surface, and the influence on the driving safety caused by the lifting of the inverted arch of the tunnel is avoided; the reinforced concrete bottom plate can ensure that the pavement is not sunken or damaged under the action of running load; the high-strength concrete inverted arch is filled, so that the structural thickness of the inverted arch part is increased, and the deformation resistance of the inverted arch is enhanced. The invention can ensure that the lining structure has certain capability of resisting the deformation of the upper drum of the tunnel bottom and can prolong the service life of the lining structure.
Drawings
The specification includes the following two drawings:
FIG. 1 is a schematic view of a tunnel lining structure with tunnel bottom reserved deformation;
FIG. 2 is a schematic representation of a deformation of a tunnel lining structure with a tunnel bottom reservation deformation in accordance with the present invention;
the figure shows the components, part names and corresponding labels: secondary lining 10, arch wall section 11, arch roof section 12, inverted arch section 13, inverted arch filling layer 14, reinforced concrete bottom plate 20, foot locking anchor rods or cables 21, reserved deformation groove 30, and inverted arch section inner contour A before deformation 1 Inner contour A of inverted arch segment after deformation 2 Outer contour B of inverted arch section before deformation 1 Inverted arch section outline B after deformation 2 Reserving a deformation groove bottom profile C before deformation 1 Reserving a profile C of the bottom of the deformation groove after deformation 2 。
Detailed Description
The patent of the invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, the tunnel lining structure with the tunnel bottom reserved deformation comprises a full-annular secondary lining 10 formed by a vault section 12, an inverted arch section 13 and two side arch wall sections 11, wherein an inverted arch filling layer 14 is arranged on the inverted arch section 13. The upper surface of the inverted arch filling layer 14 is a concave cambered surface, a reinforced concrete bottom plate 20 extending longitudinally along the tunnel is fixedly arranged between the arch foot parts of the arch wall sections 11 on the two sides of the inverted arch filling layer 14, and a reserved deformation groove 30 is formed between the bottom surface of the reinforced concrete bottom plate 20 and the upper surface of the inverted arch filling layer 14. That is, the reserved deformation groove 30 is an empty groove with a certain width and height reserved in the inverted arch filling layer 14, and can provide a certain deformation space for the upper drum of the tunnel bottom structure, and can serve as a central drainage channel.
Referring to fig. 1 and 2, by providing the reserved deformation groove 30 in the inverted arch filling layer 14, a certain deformation space is provided for the tunnel bottom upper drum, the tunnel bottom upper drum is ensured not to cause the upper drum of the road surface, and the influence on the driving safety caused by the lifting of the inverted arch of the tunnel is avoided. The reinforced concrete floor 20 ensures that the pavement is not dented and damaged under the action of the running load.
Referring to fig. 1, the arch leg portions of the arch wall sections 11 on both sides are longitudinally provided with locking anchor rods or anchor cables 21 along the tunnel at intervals, wherein the locking anchor rods or anchor cables 21 on both sides are anchored and connected with one lateral end of the reinforced concrete bottom plate 20, and the locking anchor rods or anchor cables 21 prevent the two ends of the reinforced concrete bottom plate 20 from being displaced. The inverted arch filling layer 14 is filled with high-strength concrete, so that the thickness of the inverted arch is increased, and the deformation resistance of the tunnel bottom structure is enhanced.
Referring to fig. 2, the secondary lining 10 is deformed by the external load to form an upper bulge on the inverted arch segment 13, and the inner contour a of the inverted arch segment is deformed before deformation 1 And the outer contour B of the inverted arch section before deformation 1 The deformation is carried out until the inverted arch section inner contour A is deformed under the action of load 2 And the outer contour B of the inverted arch section after deformation 2 At the position, reserving the profile C of the bottom of the deformation groove before deformation 1 Reserving the profile C of the bottom of the deformation groove after the drum is lifted to deformation 2 The reserved deformation groove 30 is reduced in space. The reinforced concrete slab 20 does not displace before and after deformation, and structural deformation caused by the rising of the tunnel bottom is carried out in the space of the reserved deformation groove 30, so that the rising of the tunnel bottom can be ensured not to cause the rising of the reinforced concrete slab 20, and the influence on driving safety caused by rising of the inverted arch of the tunnel is avoided
The foregoing is intended to illustrate only some of the principles of the tunnel lining structure with tunnel bottom reservation distortion of the present invention and is not intended to limit the invention to the specific structure and application scope shown and described, so that all possible modifications and equivalents may be resorted to, falling within the scope of the invention as defined by the appended claims.
Claims (3)
1. Tunnel lining structure with tunnel bottom reservation deflection, tunnel lining structure include by vault section (12), invert section (13) and both sides arch wall section (11) constitute full cyclic annular secondary lining (10), set up invert filling layer (14), characterized by on invert section (13): the upper surface of the inverted arch filling layer (14) is a concave cambered surface, a reinforced concrete bottom plate (20) extending longitudinally along the tunnel is fixedly arranged between arch foot parts of the arch wall sections (11) on the two sides of the inverted arch filling layer (14), and a reserved deformation groove (30) is formed between the bottom surface of the reinforced concrete bottom plate (20) and the upper surface of the inverted arch filling layer (14).
2. The tunnel lining structure with tunnel bottom reservation deformation according to claim 1, wherein: the arch foot parts of the arch wall sections (11) on two sides are longitudinally provided with foot locking anchor rods or anchor cables (21) which are anchored in surrounding rocks of the tunnel at intervals along the tunnel, and the outer ends of the foot locking anchor rods or anchor cables (21) on two sides are respectively connected with one lateral end of the reinforced concrete bottom plate (20) in an anchoring manner.
3. The tunnel lining structure with tunnel bottom reservation deformation according to claim 1, wherein: the inverted arch filling layer (14) is filled with high-strength concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710766637.5A CN107524458B (en) | 2017-08-30 | 2017-08-30 | Tunnel lining structure with tunnel bottom reserved deformation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710766637.5A CN107524458B (en) | 2017-08-30 | 2017-08-30 | Tunnel lining structure with tunnel bottom reserved deformation |
Publications (2)
| Publication Number | Publication Date |
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| CN107524458A CN107524458A (en) | 2017-12-29 |
| CN107524458B true CN107524458B (en) | 2023-09-22 |
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| CN109403160B (en) * | 2018-11-19 | 2023-09-26 | 中铁第四勘察设计院集团有限公司 | Rail deformation control structure in earthquake large deformation section high-speed railway tunnel |
| CN111335915B (en) * | 2019-12-27 | 2021-10-08 | 山西省交通科技研发有限公司 | Section steel supporting structure and method for repairing damage of tunnel inverted arch crown |
| CN111502706B (en) * | 2020-03-26 | 2022-04-12 | 中铁十八局集团有限公司 | Tunnel inverted arch structure and method suitable for bottom heave deformation control |
| CN112696212B (en) * | 2020-12-31 | 2023-03-24 | 中铁二院工程集团有限责任公司 | Compressible tunnel bottom structure for inhibiting tunnel bottom bulging and construction method |
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