CN103195086A - Tunnel structure - Google Patents
Tunnel structure Download PDFInfo
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- CN103195086A CN103195086A CN2013101180717A CN201310118071A CN103195086A CN 103195086 A CN103195086 A CN 103195086A CN 2013101180717 A CN2013101180717 A CN 2013101180717A CN 201310118071 A CN201310118071 A CN 201310118071A CN 103195086 A CN103195086 A CN 103195086A
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Abstract
A tunnel structure has large span and can bear large load, and structural durability of the tunnel structure is improved. The tunnel structure comprises a lining layer (10), a foundation (50) and a globular material packing layer (20), wherein the section of the lining layer (10) is of an annular sealed casing structure, the foundation (50) is located below the bottom of the lining layer (10), the globular material packing layer (20) surrounds the outer contour of the lining layer (10). Uneven load acted on a tunnel by the outside effect can be effectively diffused through the globular material packing layer and can be radially distributed along the outer surface of the tunnel lining, the lining layer with the section of the annular sealed casing structure has an ideal stressed geometrical shape, accordingly the high compressive strength advantage of the annular sealed casing lining layer is given full play to, and further the tunnel structure can bear larger load or has larger span compared with the common tunnel structure.
Description
Technical field
The present invention relates to tunnel structure, particularly open trench tunnel and shallow buried covered excavation tunnel structure.
Background technology
For a long time, open trench tunnel and shallow buried covered excavation tunnel all are directly to bear its all side load with the rigidity liner structure.The actual load top of bearing of such structure is uniform or non-evenly distributed load vertically downward, and the side is level or the non-evenly distributed load that certain angle is arranged.Under inhomogeneous load action, big load may be born in the tunnel structure part.Serve as the tunnel structure of control design with the least favorable load, structure bricklaying reality does not play one's part to the full outside the least favorable position.
Along with tunnel span or open trench tunnel embankment increase, also corresponding increase of tunnel structure thickness according to the conventional method design, in actual engineering even super thick liner structure more than the 2m occurs, bring new technical problems such as malformation, safety, durability thereupon, the inhomogeneous tendency of local pressure is more serious, and the structure own wt becomes very important load.The load increase causes structural thickness to increase the formation vicious circle, and these become tunnel structure to the unfavorable factor of large span development.
In mankind's activity such as ground heavy duty or impact load, subway, underground utilities and other underground construction, in addition under the composite factor effects such as the long term of underground water and surface water and earthquake, tunnel perimeter changes as time passes to the active force of structure, the time and the position that produce the least favorable load are uncertain, bring difficulty to Tunnel Design.For guaranteeing safety, the tunnel structure design safety factor is relatively large, so the problems referred to above are more outstanding.Nonetheless, local when big load occurring, tunnel structure still disease phenomenons such as cracking, distortion may occur.
Summary of the invention
Technical problem to be solved by this invention provides a kind of tunnel structure, so that tunnel structure has bigger span and bear bigger load, and improves structure durability.
The technical solution adopted for the present invention to solve the technical problems is as follows:
A kind of tunnel structure of the present invention is characterized in that it comprises: lining cutting layer, its section are annular enclosed shell structure; The basis is positioned at below, lining cutting layer bottom; The spheroidal material packed layer arranges around lining cutting layer outer surface.
The invention has the beneficial effects as follows, can disperse external influence in the inhomogeneous load in tunnel effectively by the spheroidal material packed layer, make it along tunnel lining external surface radial distribution; Section is that the closure casing structure lining cutting layer of ring-type has the pressurized ideal geometry, and the high compressive strength advantage of annular enclosed housing lining cutting layer is not fully exerted, and can bear bigger load or have bigger span with respect to general tunnel structure; Another important useful aspect of the present invention is: can disperse to pass in time creep load and the local discontinuous load of generation, be beneficial to the integrated carrying of tunnel structure, reduce disease and produce, structure durability is improved; Construction technology is simple, is easy to promote, and can obviously reduce construction costs; Applied range is specially adapted to open trench tunnel, is equally applicable to the shallow buried covered excavation tunnel.
Description of drawings
This manual comprises following six width of cloth accompanying drawings:
Fig. 1 is the elevation of tunnel structure of the present invention;
Fig. 2 is the profile of tunnel structure of the present invention;
Fig. 3 is the enlarged drawing of A part among Fig. 2;
Fig. 4 is tunnel structure computation model schematic diagram of the present invention;
Fig. 5 is the stressed transmission schematic diagram of tunnel structure spheroidal material packed layer of the present invention;
Fig. 6 is conventional tunnel liner structure computation model schematic diagram.
Member shown in the figure and corresponding mark: lining cutting layer 10, spheroidal material packed layer 20, extexine 30, topping 40, basis 50.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of tunnel structure of the present invention comprises: lining cutting layer 10, its section are annular enclosed shell structure; Basis 50 is positioned at below, lining cutting layer 10 bottom; Spheroidal material packed layer 20 is around the 10 outer surface setting of lining cutting layer.
With reference to Fig. 5, the effect of spheroidal material packed layer 20 is with the inhomogeneous load of external influence in tunnel lining, is converted to radial load and acts on lining cutting layer 10 and basis 50.According to different embankments or buried depth situation, spheroidal material packed layer 20 can adopt uniform thickness cross section or uniform thickness cross section not.Spheroidal material packed layer 20 is filled by spherical shape or the spherical spheroid of approximate circle and is formed, spheroid smooth in appearance, inviscid, and spheroid is equal diameter or non-equal diameter grading composition.Spheroidal material packed layer 20 adopts the same material spheroids to fill and forms, and perhaps adopts the different materials spheroid to fill and forms, spheroid such as the haydite that is fit to adopt, Metal Ball, etc. the quality stiff materials.
Spherical particles transmits as shown in Figure 5 the decomposition of load, after decomposing by the mutual extrusion between the spherical particles, the particle of being close to lining cutting 10 and basic 50 surfaces in the mode of radial load with the upper surface of pressure distribution to the outer surface of lining cutting layer 10 and basis 50.
Extexine 30 is flexible or half flexibility, adopts flexible or half flexible material that has certain intensity such as rubber, polyethylene or other chemical synthetic materials etc.The main effect of extexine 30 is, is convenient to fill spherical particles during construction, makes spheroidal material packed layer 20 form design shape and thickness.Extexine 30 can have the tunnel waterproofing layer effect concurrently.
With reference to Fig. 2; tunnel structure of the present invention can also be included in the basis topping 40 that ring extexine 30 outer surfaces arrange more than 50; this topping 40 is non-rigid layer, adopts such as similar materials such as foam, yellow mud, clays, and its effect is to destroy extexine 30 when avoiding backfill construction.
With reference to Fig. 2, basis 50 effect is to place on the ground with making lining cutting layer 10, spheroidal material packed layer 20 Stability Analysis of Structures, the bearing structure load, and with Load Transfer to ground.Basis 50 is rigidity, adopts and constructs such as concrete, steel concrete or the high constructional materials of other compressive strength.Usually, basis 50 is adopted and is not waited heavv section, and the thickness of its transverse ends surpasses interior thickness.
Fig. 2 is the profile of a kind of exemplary embodiment of tunnel structure of the present invention, and this tunnel structure is made of lining cutting layer 10, basis 50, spheroidal material packed layer 20, extexine 30 and topping 40.Spheroidal material packed layer 20 is around the 10 outer surface setting of lining cutting layer, extexine 30 global shape material packed layer 20 outer surface settings, and the bottom of the complex of lining cutting layer 10, spheroidal material packed layer 20 and extexine 30 is seated on the basis 50.Nonrigid topping 40 is ring extexine 30 outer surface settings more than 50 on the basis.
Fig. 6 is conventional tunnel liner structure computation model schematic diagram, and the actual load top of bearing of tunnel lining structure is uniform or non-evenly distributed load vertically downward, and texture edge is level or the non-evenly distributed load that certain angle is arranged.Under inhomogeneous load action, big load may be born in the tunnel structure part.Serve as the tunnel structure of control design with the least favorable load, structure bricklaying reality does not play one's part to the full outside the least favorable position.
Fig. 4 is tunnel structure computation model schematic diagram of the present invention, compares with the conventional tunnel liner structure computation model shown in Fig. 6, and the present invention has changed the load action pattern of conventional tunnel, because the load hoop distributes, lining cutting layer 10 can bear bigger load.Simultaneously, section is that annular enclosed shell structure lining cutting layer 10 has the pressurized best geometry, and the high compressive strength advantage of lining cutting layer 10 is not fully exerted.Because the effect of spherical layer, fractional load is transferred to the basis.Stressed more favourable with respect to conventional tunnel lining cutting layer, structure can be born bigger load or be had bigger span.
Another importance after the tunnel builds up, is passed in time, can not predict that in the outside, tunnel the position may produce point load because of human activity, surface water and underground water, earthquake etc., and the first stage of construction load also may change in time.Load redistribution through spheroidal material packed layer 20 disperses local discontinuous load, is beneficial to the integrated carrying of tunnel lining, reduces disease and produces, and the tunnel structure durability is improved.
Be example with headroom 12.8m tunnel in the standard railroad two-wire V level II type, by conventional tunnel structure designing and calculating, arch thickness needs 1.8m, and arch and abutment wall need be by the structure stress arrangements of reinforcement.As adopt this tunnel structure, and arch wall thickness can be reduced to 1.2m, saves bricklaying 20%, only needs constructional reinforcement, and 5.8 tons of steel can be saved in every linear meter(lin.m.) tunnel, are about intrinsic 52%.Construction technology of the present invention is simple, is easy to promote, and can obviously reduce construction costs, and technical advantage and economic effect in the large cross-section tunnel engineering will be more obvious.
Some principles of the above a kind of tunnel structure of the present invention that just explains through diagrams, be not be the present invention to be confined to shown in and in described concrete structure and the scope of application, so every corresponding modify and equivalent that might be utilized all belongs to the claim that the present invention applies for.
Claims (7)
1. tunnel structure, it is characterized in that it comprises: lining cutting layer (10), its section are annular enclosed shell structure; Basis (50) is positioned at below, lining cutting layer (10) bottom; Spheroidal material packed layer (20) is around lining cutting layer (10) outer surface setting.
2. a kind of tunnel structure according to claim 1 is characterized in that: described spheroidal material packed layer (20) adopts uniform thickness or uniform thickness cross section not.
3. as a kind of tunnel structure as described in the claim 2, it is characterized in that: described spheroidal material packed layer (20) is filled by spherical shape or the spherical spheroid of approximate circle and is formed spheroid smooth in appearance, inviscid.
4. as a kind of tunnel structure as described in the claim 3, it is characterized in that: described spheroid is equal diameter or non-equal diameter grading composition.
5. as a kind of tunnel structure as described in the claim 4, it is characterized in that: described spheroidal material packed layer (20) adopts the same material spheroid to fill and forms, and perhaps adopts the different materials spheroid to fill and forms.
6. as a kind of tunnel structure as described in any one of the claim 1 to 5, it is characterized in that: further comprising the extexine (30) that global shape material packed layer (20) outer surface arranges, this extexine (30) be flexibility or half flexible layer.
7. as a kind of tunnel structure as described in the claim 6, it is characterized in that: further comprising the topping (40) that arranges at basis (50) above ring extexine (30) outer surface, this topping (40) is non-rigid layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013101180717A CN103195086A (en) | 2013-04-07 | 2013-04-07 | Tunnel structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101180717A CN103195086A (en) | 2013-04-07 | 2013-04-07 | Tunnel structure |
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| CN103195086A true CN103195086A (en) | 2013-07-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594919A (en) * | 2015-01-22 | 2015-05-06 | 山东科技大学 | Soft rock roadway buffering tapered double strong shell support system and construction method thereof |
| CN106460510A (en) * | 2014-05-21 | 2017-02-22 | 建筑机械咨询公司 | Construction element for creating a tunnel, tunnel comprising such an element and methods for constructing such an element and such a tunnel |
| CN109681231A (en) * | 2019-01-24 | 2019-04-26 | 中铁第四勘察设计院集团有限公司 | A kind of active fault section Tunneling by mining method displacement adaptive structure and installation method |
| CN109707398A (en) * | 2019-01-08 | 2019-05-03 | 西南交通大学 | A kind of resistance to jelly type pin-connected panel Tunnel structure and construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460510A (en) * | 2014-05-21 | 2017-02-22 | 建筑机械咨询公司 | Construction element for creating a tunnel, tunnel comprising such an element and methods for constructing such an element and such a tunnel |
| JP2020056304A (en) * | 2014-05-21 | 2020-04-09 | コンストリュクスィオン、メカニク、コンスュルタントＣｏｎｓｔｒｕｃｔｉｏｎｓ Ｍｅｃａｎｉｑｕｅｓ Ｃｏｎｓｕｌｔａｎｔｓ | Constructing element for making tunnel, tunnel comprising such element, and method of constructing such element and such tunnel |
| CN106460510B (en) * | 2014-05-21 | 2020-09-15 | 建筑机械咨询公司 | Construction element for constructing tunnel, tunnel comprising same and construction method thereof |
| US10774640B2 (en) | 2014-05-21 | 2020-09-15 | Agence Nationale Pour La Gestion Des Dechets Radioactifs | Construction element for creating a tunnel, tunnel comprising such an element and methods for constructing such an element and such a tunnel |
| JP2022174014A (en) * | 2014-05-21 | 2022-11-22 | コンストリュクスィオン、メカニク、コンスュルタント | Constructing element for making tunnel, tunnel comprising such element, and method of constructing such element and such tunnel |
| JP7341285B2 (en) | 2014-05-21 | 2023-09-08 | コンストリュクスィオン、メカニク、コンスュルタント | Building elements for making tunnels, tunnels comprising such elements, and methods of building such elements and such tunnels |
| CN104594919A (en) * | 2015-01-22 | 2015-05-06 | 山东科技大学 | Soft rock roadway buffering tapered double strong shell support system and construction method thereof |
| CN109707398A (en) * | 2019-01-08 | 2019-05-03 | 西南交通大学 | A kind of resistance to jelly type pin-connected panel Tunnel structure and construction method |
| CN109681231A (en) * | 2019-01-24 | 2019-04-26 | 中铁第四勘察设计院集团有限公司 | A kind of active fault section Tunneling by mining method displacement adaptive structure and installation method |
| CN109681231B (en) * | 2019-01-24 | 2024-01-19 | 中铁第四勘察设计院集团有限公司 | Mobile fault section mining method tunnel displacement self-adaptive structure and installation method |
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Application publication date: 20130710 |