CN203130093U

CN203130093U - 80kmh tunnel widening limitation structure form

Info

Publication number: CN203130093U
Application number: CN 201320156153
Authority: CN
Inventors: 谢笛
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-01
Filing date: 2013-04-01
Publication date: 2013-08-14
Anticipated expiration: 2023-04-01

Abstract

The utility model relates to a 80kmh tunnel widening limitation structure form, which is a two-way multi-arch tunnel structure with the characteristics that the single-tunnel building limitation clear width is 12.25m, the clear height is 5.0m, the carriageway width is 10.0m, the two-side marginal strips are 0.5m and 0.25m, the two-side maintaining roadway width is 0.75m, the wide right side carriageway of the carriageway is 2.5m wider than the existing tunnel, the internal outline of the single-tunnel tunnel is in a five-center circle structure form, and the cross section is in an independent ring forming curve wall type cross section structure. The 80kmh tunnel widening limitation structure form has the advantages that the structure is rigorous, the construction is convenient, the specific ring structure ensures the stress balance of the integral structure, and the limitation widening design ensures the vehicle running smoothness and also meets the acceleration and deceleration carriageway requirements in scenic regions.

Description

Gauge form of structure is widened in 80 kilometers speed per hour tunnels

Technical field

The utility model relates to tunnel structure, is specially the tunnel structure after gauge is widened in a kind of tunnel to 80 kilometers speed per hours.

Background technology

China mountain ridge is more, has seriously hindered shaping up of road and rail traffic, so all have to get through on the mountain ridge the normal operation that the tunnel guarantees the road and rail traffic a lot of local.Along with the related science continuous advancement in technology, tunnel structure is science more and more also, more and more meet mechanics principle, make the tunnel can carry higher pressure, meanwhile, tunnel structure also is fixed up thereupon, the tunnel specification standardization, this has made things convenient for constructing tunnel to a great extent, also is convenient to regular maintenance.Yet, need do particular design in specific zone and under requiring, such as the short stockaded village III tunnel of Jishou, road channel Hunan Province, Changsha to Chongqing to the highway section of tea hole, this tunnel is by two-way Four-Lane Road speedway multiple-arch tunnel design, the plane, tunnel is positioned at circular curve and the easement curve of R=1000m, A=374.166, the maximum superelevation 3% in road surface, vertical face is positioned at 3% and 0.8% upward slope section, and the vertical curve radius is 16000m.Because this Jishou, tunnel termination rigid frame bridge, tea hole termination short stockaded village suspension bridge and sightseeing platform, in order to guarantee the smooth and easy and suitable acceleration and deceleration track that connects sightseeing platform of driving a vehicle, clearance of tunnel is with reference to the 80km/h tunnel clearance, the tunnel clear span must be widened to 12.25m by original 10.25m, the demand that just can meet the acceleration and deceleration track is if according to tunnel structure originally, then can bring very big safe driving hidden danger.

The utility model content

The technical problem that the utility model solves is to provide a kind of 80 kilometers speed per hour tunnels to widen gauge form of structure, to solve the shortcoming in the above-mentioned background technology.

The technical problem that the utility model solves realizes by the following technical solutions:

Gauge form of structure is widened in 80 kilometers speed per hour tunnels, be a kind of single hole track clearance clear span 12.25m, clear height 5.0m, the wide 10.0m of runway, both sides marginal strip 0.5m and 0.25m, the wide 0.75m of both sides maintaining roadway, two two-way multiple-arch tunnel structures that single hole axial symmetry arranges, profile is five hearts circle form of structure in described single hole tunnel, and its section is the bent wall formula section structure of independent Cheng Huan.

Described single hole track clearance is not the Y-axis symmetrical structure, and its right runway is than the wide 2.50m in the left side, and shoulder oblique angle the right is slightly slow, corresponding with it than the left side, and another single hole track clearance is symmetry with it, is convenient to the vehicle limit acceleration and deceleration of keeping right.

Single hole profile section in described tunnel is that a plurality of arc structures are formed symmetrical closed circular, comprise top arc, shoulder arc, belly arc, foot's arc and bottom arc, wherein shoulder arc, belly arc and foot's arc have two, be symmetrically distributed in the right and left respectively, arrange from top to bottom and be followed successively by top arc, shoulder arc, belly arc, foot's arc, bottom arc.

Bottom water horizontal line according to described single hole track clearance is benchmark, each arc size of list hole, described tunnel profile end face is that 88.2 ° of top arc angle, radius 7.19m, the center of circle are positioned at 0.11m on the level, the shoulder arc angle is that 49.2 °, radius 4.68m, the center of circle are positioned at 1.912m on the level, 8.4 ° of belly arc angle, radius 12.845m, the center of circle is positioned at 2.386m on the level, 62.4 ° of foot's arc angle, radius 0.8m, the center of circle is positioned at 0.067m under the level, and 31.8 ° of bottom arc angle, radius 20.45m, the center of circle are positioned at 18.83m on the level.

In the utility model, the inside and outside central strip bandwidth in described tunnel is 4.4m, at cavern, left and right sides both sides maintaining roadway and the surplus wide cable trench that is of a size of 50 * 50cm and 50 * 60cm that respectively is provided with down.

Beneficial effect: the utility model is of a tightly knit structure, easy construction, and specific loop configuration has guaranteed integrally-built stress equalization, the design that gauge is widened guarantees especially to drive a vehicle and has satisfied the demand in the acceleration and deceleration track at scenic spot unobstructed the time.

Description of drawings

Fig. 1 is the section structure schematic diagram of the utility model preferred embodiment.

Fig. 2 is the gauge structural representation of the utility model preferred embodiment.

Fig. 3 is the utility model existing tunnel structure comparison structure schematic diagram.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Gauge form of structure is widened in 80 kilometers speed per hour tunnels referring to Fig. 1-2, be a kind of single hole track clearance clear span 12.25m, clear height 5.0m, the wide 10.0m of runway, both sides marginal strip 0.5m and 0.25m, the wide 0.75m of both sides maintaining roadway, two two-way multiple-arch tunnel structures that single hole axial symmetry arranges, profile is five hearts circle form of structure in described single hole tunnel, and its section is the bent wall formula section structure of independent Cheng Huan.

Single hole profile section in described tunnel is that a plurality of arc structures are formed symmetrical closed circular, comprise top arc, shoulder arc, belly arc, foot's arc and bottom arc, wherein shoulder arc, belly arc and foot's arc have two, be symmetrically distributed in the right and left respectively, arrange from top to bottom and be followed successively by top arc, shoulder arc, belly arc, foot's arc, bottom arc.Bottom water horizontal line according to described single hole track clearance is benchmark, each arc size of list hole, described tunnel profile end face is 88.2 ° of top arc ARC1 angles, radius R 1=7.19m, center of circle O1 is positioned at 0.11m on the level, shoulder arc ARC2 angle is 49.2 °, radius R 2=4.68m, center of circle O2 is positioned at 1.912m on the level, 8.4 ° of belly arc ARC3 angles, radius R 3=12.845m, center of circle O3 is positioned at 2.386m on the level, 62.4 ° of the arc ARC4 of foot angles, radius R 4=0.8m, center of circle O4 is positioned at 0.067m under the level, 31.8 ° of bottom arc ARC5 angles, radius R 5=20.45m, center of circle O5 is positioned at 18.83m on the level.

Existing tunnel structure referring to Fig. 3, described tunnel does not have the design at the acceleration and deceleration demand, its single hole track clearance clear span 10.25m, clear height 5.0m, the wide 7.5m of runway, both sides marginal strip 0.5m and 0.75m, the wide 0.75m of both sides maintaining roadway, the utility model by comparison, the wide right side runway of runway is widened 2.5m, the acceleration and deceleration of being convenient to drive a vehicle.

More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1.80 gauge form of structure is widened in kilometer speed per hour tunnel, it is characterized in that, be a kind of single hole track clearance clear span 12.25m, clear height 5.0m, the wide 10.0m of runway, both sides marginal strip 0.5m and 0.25m, the wide 0.75m of both sides maintaining roadway, two two-way multiple-arch tunnel structures that single hole axial symmetry arranges, profile is five hearts circle form of structure in described single hole tunnel, and its section is the bent wall formula section structure of independent Cheng Huan.

2. gauge form of structure is widened in 80 kilometers speed per hour tunnels according to claim 1, it is characterized in that, the right runway of described single hole track clearance is than the wide 2.50m in the left side, and is corresponding with it, and another single hole track clearance is symmetry with it.

3. gauge form of structure is widened in 80 kilometers speed per hour tunnels according to claim 1, it is characterized in that, single hole profile section in described tunnel is that a plurality of arc structures are formed symmetrical closed circular, comprise top arc, shoulder arc, belly arc, foot's arc and bottom arc, wherein shoulder arc, belly arc and foot's arc have two, be symmetrically distributed in the right and left respectively, arrange from top to bottom and be followed successively by top arc, shoulder arc, belly arc, foot's arc, bottom arc.

4. gauge form of structure is widened in 80 kilometers speed per hour tunnels according to claim 3, it is characterized in that, bottom water horizontal line according to described single hole track clearance is benchmark, each arc size of list hole, described tunnel profile end face is 88.2 ° of top arc angle, radius 7.19m, the center of circle is positioned at 0.11m on the level, the shoulder arc angle is 49.2 °, radius 4.68m, the center of circle is positioned at 1.912m on the level, 8.4 ° of belly arc angle, radius 12.845m, the center of circle is positioned at 2.386m on the level, 62.4 ° of foot's arc angle, radius 0.8m, the center of circle is positioned at 0.067m under the level, 31.8 ° of bottom arc angle, radius 20.45m, the center of circle is positioned at 18.83m on the level.