CN104594229A - Z-shaped rigid frame half shed type open-cut tunnel structure - Google Patents
Z-shaped rigid frame half shed type open-cut tunnel structure Download PDFInfo
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- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 19
- 238000010276 construction Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 102000014914 Carrier Proteins Human genes 0.000 description 4
- 108091008324 binding proteins Proteins 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 229910000831 Steel Inorganic materials 0.000 description 1
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- 239000003795 chemical substances by application Substances 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- 238000004078 waterproofing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
- E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to a Z-shaped rigid frame half shed type open-cut tunnel structure in order to meet the need of tunnel-railway junction belts in terrains with severe unsymmetrical pressure for protection against rockfalls and effectively reduce the destruction of landscapes and vegetation along a line. The Z-shaped rigid frame half shed type open-cut tunnel structure comprises a half shed type open-cut tunnel lining structure, a Z-shaped rigid frame and outer piles, wherein the half shed type open-cut tunnel lining structure is arranged at the mountain side and composed of an inverted arch section, a sidewall section and a half-range arch section, the Z-shaped rigid frame is arranged at the valley side and composed of a bottom longitudinal beam, herringbone special-shaped curved columns, a top longitudinal beam and a top slab, and the outer piles are arranged under the bottom longitudinal beam. The bottom longitudinal beam and the top longitudinal beam stretch along the direction of the line, and the outer piles, the upper ends of which are fixedly combined with the bottom longitudinal beam, are arranged at intervals along the direction of the line. The herringbone special-shaped curved columns are arranged at intervals along the direction of the line, and the upper ends and lower ends of the herringbone special-shaped curved columns are respectively fixedly combined with the top longitudinal beam and the bottom longitudinal beam; the top slab is fixedly combined with the top longitudinal beam, and the inner end of the top slab is fixedly combined with the top of the half-range arch section.
Description
Technical field
The present invention relates to civil engineering, particularly a kind of needs that can adapt to serious bias voltage landform tunnel road Binding protein protection rockfall, and effectively reduce the Z-shaped rigid frame half canopy formula open-cut tunnel structure to circuit on the way view and vegetation deterioration.
Background technology
Due to history economics development level and technical condition restriction, many existing railways are close to mountain and build, there is a large amount of high slope, in addition long-time weathering and erosion and structure deterioration, cause the disasters such as a large amount of crag, falling rocks, slope collapse, even mud-rock flow, have a strong impact on both wired operation security and infringement economic development, also bring a large amount of Existing railway promotion engineerings simultaneously, significantly increase railway maintenance cost.Along with the high speed development of high-speed railway and a large amount of planning of riverine railway, the quantity of being close to mountain railway will roll up, and also occurring in a large number of roadbed high slope, rockfall seriously jeopardizes the safety of high-speed cruising train, produces and has more destructive consequence.In addition at present engineering environmental requirement improves gradually, and engineering is aesthstic and the Nature harmonious development also becomes epoch new demand for development, and therefore seriously the engineering proposal research of bias voltage landform tunnel road Binding protein becomes a new focus.
At present, threaten for preventing falling rocks in serious bias voltage landform location, the normal engineering measure adopted comprises subgrade construction, open cut tunnel, hangar tunnel or special-shaped environment protection-type hangar tunnel.
For certain Mountainous high speed railway, due to landform, geology, line condition restriction and the needs establishing station support local economic development, long distance is close to mountain and is built, this section of horizontal wall inscription is precipitous, the serious bias voltage of landform, and basement rock is mud stone burning into sand rock, have rockfall above circuit, Lin Gu side has 3 ~ 5m soil layer to cover.
According to subgrade construction scheme, brush slope, backer side is up to 59m, brush slope far reaches 73m, need arrange Gravity Retaining Wall or pile plate wall supporting by paddy side, heavy damage vegetation along the line and view, roadway excavation earthwork is very large, and subgrade support retainer engineering quantity is large, and top falling rocks exists severe compromise, threaten train operation safety, and maintenance costs is high.
According to open cut tunnel scheme, then can significantly reduce earth and stone digging amount, in conjunction with measures such as domatic crag removing, reinforcing and linked network interceptions, compare subgrade construction scheme, can significantly improve train operation safety, but single pressure type open cut tunnel Lin Gu side foundation width is large, need to arrange strong basis under webbing wall to stablize with guarantee system, and dead load is large, invest high, with natural landscape on the way in conjunction with poor.
Hangar tunnel scheme can combine with roadbed scheme, backer side adopts piling wall permanent protection, rigid frame formula or wall-can be adopted by paddy side, and in conjunction with pile foundation joist mode, exterior wall load being delivered to basement rock, framed shed tunnel dead load is less, due to easy construction, to both wired interference was little, adopt in a large number in Existing railway promotion, but the rigidity of structure is little, mechanical characteristic is poor, can bear falling rocks load little; Wall-hangar tunnel exterior wall, from great, significantly can increase the investment of exterior wall infrastructure, and it is also little to bear falling rocks load.
Special-shaped environment protection-type hangar tunnel is that highway tunnel adopts more a kind of structural shape in recent years, it has and significantly reduces earth and stone digging, and can combine with view along the line, but its structure is special-shaped, and structure stress characteristic is poor, unsightly, can filled slope little, can bear falling rocks load little, safety of structure is poor, and construction is inconvenient, rarely has employing in railway tunnel.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Z-shaped rigid frame half canopy formula open-cut tunnel structure, to adapt to the needs of serious bias voltage landform tunnel road Binding protein protection rockfall, effectively reduces circuit on the way view and vegetation deterioration.
The technical solution adopted for the present invention to solve the technical problems is as follows:
Z-shaped rigid frame half canopy formula open-cut tunnel structure of the present invention, it is characterized in that: comprise the half canopy formula open cut tunnel liner structure being arranged at backer side and being made up of inverted arch section, abutment wall section and half range crown section, be arranged at the Z-shaped rigid frame be made up of bottom girder, the special-shaped Qu Zhu of herringbone and top longeron, top board by paddy side, and be arranged at the outside stake below bottom girder; Described bottom girder, top longeron extend along line direction, and the outside stake of its upper end and bottom girder consolidation is arranged along line direction interval; The special-shaped Qu Zhu of described herringbone is arranged along line direction interval, its upper end, lower end respectively with top longeron, bottom girder consolidation; Described top board and top longeron consolidation, its vault consolidation that is inner and half range crown section.
The invention has the beneficial effects as follows, it is little that Z-shaped rigid frame half canopy formula open cut tunnel has excavation, and can bear falling rocks load comparatively large, mechanical characteristic is better; Structure is attractive in appearance, to view on the way and vegetation deterioration little, can with naturally coordinate mutually; Formwork jumbo can be utilized to coordinate the advantages such as common templates construction,
Accompanying drawing explanation
This manual comprises as next width accompanying drawing:
Fig. 1 is the profile of the present invention's Z-shaped rigid frame half canopy formula open-cut tunnel structure.
Component shown in figure and corresponding mark: inner side stake 10, inverted arch section 11, abutment wall section 12, crown section 13; The bent post 21b of the special-shaped bent post 21 of bottom girder 20, herringbone, lower outside post 21a, lower inside, the bent post 21c in top, top longeron 22, top board 22a, cornice 23, outside stake 24; Waterproofing course 30, sand gravel filtration beds 31, ram banket rock layers 32, clay water barrier 33, backfill plantation soil layer 34, block 35, mortar flag stone layer 36.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
With reference to Fig. 1, Z-shaped rigid frame half canopy formula open-cut tunnel structure of the present invention comprises the half canopy formula open cut tunnel liner structure being arranged at backer side and being made up of inverted arch section 11, abutment wall section 12 and half range crown section 13, be arranged at the Z-shaped rigid frame be made up of bottom girder 20, the special-shaped bent post 21 of herringbone and top longeron 22, top board 22a by paddy side, and be arranged at the outside stake 24 below bottom girder 20.Described bottom girder 20, top longeron 22 extend along line direction, and the outside stake 24 of its upper end and bottom girder 20 consolidation is arranged along line direction interval.The special-shaped bent post 21 of described herringbone is arranged along line direction interval, its upper end, lower end respectively with top longeron 22, bottom girder 20 consolidation.Described top board 22a and top longeron 22 consolidation, its vault consolidation that is inner and half range crown section 13.
The present invention determines a kind of structural shape between single pressure type open cut tunnel and full arch formula hangar tunnel, Internal periphery by the Z-shaped rigid frame in paddy side is consistent with backer side half canopy formula open cut tunnel liner structure, by the suitable adduction of single pressure type open cut tunnel exterior wall, to reduce bricklaying and to have slightly good basic condition, Z-shaped rigid frame capital simultaneously as exterior wall has larger size, unfavorable to adapt to the structure that longitudinal size reduces to bring.Adopt Extended chemotherapy mode at the bottom of the Z-shaped rigid-frame column of exterior wall, and punch into herringbone at the bottom of Z-shaped rigid-frame column, both increased moment of inertia at the bottom of post, turn reduced bricklaying and deadweight.
With reference to Fig. 1, the special-shaped bent post 21 of described herringbone is made up of lower outside post 21a, the bent post 21b of lower inside and the bent post 21c in top, and lower outside post 21a and the bent post 21b of lower inside forms intercolumniation perforate.Upper end and top longeron 22, the top board 22a consolidation of the bent post 21c in top, the lower end of the bent post 21b of lower outside post 21a, lower inside is consolidated in outside, the inner side of bottom girder 20 respectively, and the Internal periphery of the special-shaped bent post 21 of herringbone forms smoother linking with the Internal periphery of half canopy formula open cut tunnel liner structure.The width of the special-shaped bent post 21 of herringbone can be determined in conjunction with basic condition and bottom girder 20 facilities, longitudinal thickness and spacing in conjunction with high ferro vehicle air dynamic effect and may can be determined through Integrated comparative by falling rocks load, and intercolumniation perforate also can be used as access path and structural strengthening headspace.
With reference to Fig. 1, the horizontal formation that stretches out of lateral wall of described top longeron 22 cornices 23, and 23 pairs of substructures of cornicing are protected.Top longeron 22 wall vertical to upwards extending to form block 35, block 35 to rammer banket rock layers 32, clay water barrier 33 and backfill plantation soil layer 34 outside formed constraint.In the ditch longitudinal drainage of block 35 arranged outside.
With reference to Fig. 1, described backer side arranges inner side stake 10 along line direction interval, and inner side stake 10 and abutment wall section 12 consolidation are integrated.
For certain Mountainous high speed railway, as follows to the safety analysis of the Z-shaped rigid frame half canopy formula open cut tunnel designed by technical scheme:
The thick 0.8m of arch, top board and inverted arch, backer's side wall thickness 1.2m, the special-shaped Qu Zhuhou 2m of herringbone, longitudinal pitch 5m, bottom girder is of a size of 3.6m, and wide × 1.2m is high, top longeron be of a size of 1.5m wide × 1.5m is high, block is of a size of 0.4m, and wide × 1.0m is high, cornice high 0.5m, and herringbone special-shaped bent post position correspondence position establishes outside stake, and stake sectional dimension is 2.0m × 2.0m, pile spacing 5m, the long 6m of stake, to banket the thick design of 1.5m by vault, calculates longitudinal length 32m.Agent structure all adopts C35 steel bar concrete, and inverted arch is filled and groove adopts C20 concrete.Adopt MIDAS/GTS to carry out Three-Dimensional Numerical Simulation to this project, structure and physical mechanics parameter of rock and soil are in table 1.
The physical and mechanical parameter of table 1 structure and ground
According to Tunnel Design data, stratum residing for tunnel trunk is V grade of country rock, and calculating simulation scope is that horizontal direction tunnel outward flange is greater than 3 times of excavation spans to model boundary, and tunnel bottom is greater than 3 times of excavation height apart from model lower boundary distance.During calculating, Rock Mass presses elastic-plastic material consideration, and obey Mohr-Coulomb yield criterion, tunnel support structure is pressed elastomeric material and is considered, tunnel surrounding, structure all adopt three-dimensional tetrahedron four node entities unit, the fringe conditions of model is realized by the displacement of limited model four sides and bottom surface normal direction, calculates load and comprises stratum, tunnel structure deadweight and rock-fall impact load.Rock-fall impact load realizes by applying point load on tunnel top.To simulate impact load be 0KN and impact load when being 1000KN, 1500KN, 1800KN, 2500KN, 5000KN angle of attack is respectively 30 °, 45 °, 60 °, 75 ° time totally 21 operating modes, analog result finds, C point at the bottom of the special-shaped bent column bottom B point of the vault A point of the corresponding section of impact load, herringbone, block is structural internal force key controlling position, particular location is shown in that accompanying drawing 1, A point, B point, C point first principal stress analog result are in table 2 ~ 4.
Table 2 A point internal force analog result MPa
Table 3 B point internal force analog result MPa
Table 4 C point internal force analog result MPa
From table 2 ~ 4:
1, when impact load is less than 1800KN, each position first principal stress is all less than C35 concrete ultimate tensile intensity 2.45MPa, and Z-shaped rigid frame half canopy formula open cut tunnel has stronger anti-rock-fall impact ability.
2, along with impact load increases, the first principal stress increase of Qu Zhuyu bottom girder junction is significantly less than vault, gable bend's post is later than dust block and vault destroys, gable bend's post has stronger Rigidity and strength, the good pile foundation joist basis of fitment stability, Z-shaped rigid frame half canopy formula open cut tunnel has good safety.
3, the Z-shaped rigid frame half canopy formula open cut tunnel impact resistance that Charpy angle is little when the falling rocks load angle of shock is larger is stronger.
4, along with impact load increases, block reaches ultimate tensile intensity prior to vault and Qu Zhu, pinpoints the problems and process in time when being conducive to maintenance.
Under serious bias voltage orographic condition, technical scheme compares in table 5 with the pluses and minuses of prior art.
The serious bias voltage landform engineering proposal pluses and minuses of table 5 compare
Obviously, invent Z-shaped rigid frame half canopy formula open-cut tunnel structure compared to the prior art comparatively, mainly there is the advantage of following several respects:
1, half canopy formula open cut tunnel significantly reduces excavation, and the Z-shaped rigid frame attractive appearance of exterior wall, coordinates suitable moulding, can merge with natural harmony, higher and require that higher railway, highway, rail tunnel have good application prospect to view in environmental protection requirement.
2, the strong and more conveniently feature of constructing of Z-shaped rigid frame half canopy formula open cut tunnel existing open cut tunnel good integrity, anti-rock-fall impact ability, there is again the advantage that shed hole structure deadweight is less, general or the serious bias voltage landform of landform can be applied to, or coordinate certain safeguard procedures to apply to the location of falling rocks hidden danger.
3, along with impact load increases, gable bend's post is later than dust block and vault destroys, and gable bend's post has stronger Rigidity and strength.The basis that fitment stability is good, Z-shaped rigid frame half canopy formula open cut tunnel is a kind of structural shape that better can adapt to serious bias voltage landform tunnel road Binding protein.
Some principles of the above the present invention's Z-shaped rigid frame half canopy formula open-cut tunnel structure that just explains through diagrams, be not the present invention to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the present invention applies for.
Claims (4)
1.Z shape rigid frame half canopy formula open-cut tunnel structure, it is characterized in that: comprise the half canopy formula open cut tunnel liner structure being arranged at backer side and being made up of inverted arch section (11), abutment wall section (12) and half range crown section (13), be arranged at the Z-shaped rigid frame be made up of bottom girder (20), the special-shaped Qu Zhu (21) of herringbone and top longeron (22), top board (22a) by paddy side, and be arranged at the outside stake (24) of bottom girder (20) below; Described bottom girder (20), top longeron (22) extend along line direction, and the outside stake (24) of its upper end and bottom girder (20) consolidation is arranged along line direction interval; The special-shaped Qu Zhu (21) of described herringbone is arranged along line direction interval, its upper end, lower end respectively with top longeron (22), bottom girder (20) consolidation; Described top board (22a) and top longeron (22) consolidation, its vault consolidation that is inner and half range crown section (13).
2. Z-shaped rigid frame half canopy formula open-cut tunnel structure as claimed in claim 1, it is characterized in that: the special-shaped Qu Zhu (21) of described herringbone is by lower outside post (21a), lower inside Qu Zhu (21b) and top Qu Zhu (21c) is formed, upper end and top longeron (22) of top Qu Zhu (21c), top board (22a) consolidation, lower outside post (21a), the lower end of lower inside Qu Zhu (21b) is consolidated in the outside of bottom girder (20) respectively, inner side, the Internal periphery of the special-shaped Qu Zhu (21) of herringbone forms smoother linking with the Internal periphery of half canopy formula open cut tunnel liner structure.
3. Z-shaped rigid frame half canopy formula open-cut tunnel structure as claimed in claim 2, it is characterized in that: the horizontal formation that stretches out of lateral wall on described top longeron (22) is corniced (23), and the wall vertical on top longeron (22) is to upwards extending to form block (35).
4. Z-shaped rigid frame half canopy formula open-cut tunnel structure as claimed in claim 1, is characterized in that: described backer side arranges inner side stake (10) along line direction interval, and inner side stake (10) and abutment wall section (12) consolidation are integrated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510029001.3A CN104594229B (en) | 2015-01-21 | 2015-01-21 | Z-shaped rigid frame half shed type open-cut tunnel structure |
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| CN201510029001.3A CN104594229B (en) | 2015-01-21 | 2015-01-21 | Z-shaped rigid frame half shed type open-cut tunnel structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603893A (en) * | 2016-03-07 | 2016-05-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Tunnel portal flexible nose-shaped rolling stone discharging and guiding shed tunnel structure and designing method thereof |
| CN106012879A (en) * | 2016-07-10 | 2016-10-12 | 中国电建集团贵阳勘测设计研究院有限公司 | Water and electricity exploration cave mouth safety protection method and device |
| CN110158618A (en) * | 2019-06-28 | 2019-08-23 | 四川省交通勘察设计研究院有限公司 | A kind of novel backfill structure and earth-filling method applied to open cut tunnel hole top |
| CN110242306A (en) * | 2019-06-28 | 2019-09-17 | 四川省交通勘察设计研究院有限公司 | Open cut tunnel anti-side laminated structure and construction method |
| CN111424571A (en) * | 2020-03-31 | 2020-07-17 | 四川省公路规划勘察设计研究院有限公司 | A kind of rockfall-resistant impact shed cave structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0734418A (en) * | 1993-07-16 | 1995-02-03 | P S Co Ltd | Shed shock absorber |
| JP2002013395A (en) * | 2000-06-30 | 2002-01-18 | Iwate Haneda Concrete Kk | Concrete arch type structure |
| CN202116993U (en) * | 2011-06-22 | 2012-01-18 | 中铁二院工程集团有限责任公司 | Slope collapse rock prevention open-cut tunnel structure for multi-line unequal-altitude railways |
| CN202830792U (en) * | 2012-09-06 | 2013-03-27 | 中铁二院工程集团有限责任公司 | Road high and steep slope anti-foreign-material structure |
| CN204530520U (en) * | 2015-01-21 | 2015-08-05 | 中铁二院工程集团有限责任公司 | Z-shaped rigid frame half canopy formula open-cut tunnel structure |
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2015
- 2015-01-21 CN CN201510029001.3A patent/CN104594229B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0734418A (en) * | 1993-07-16 | 1995-02-03 | P S Co Ltd | Shed shock absorber |
| JP2002013395A (en) * | 2000-06-30 | 2002-01-18 | Iwate Haneda Concrete Kk | Concrete arch type structure |
| CN202116993U (en) * | 2011-06-22 | 2012-01-18 | 中铁二院工程集团有限责任公司 | Slope collapse rock prevention open-cut tunnel structure for multi-line unequal-altitude railways |
| CN202830792U (en) * | 2012-09-06 | 2013-03-27 | 中铁二院工程集团有限责任公司 | Road high and steep slope anti-foreign-material structure |
| CN204530520U (en) * | 2015-01-21 | 2015-08-05 | 中铁二院工程集团有限责任公司 | Z-shaped rigid frame half canopy formula open-cut tunnel structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603893A (en) * | 2016-03-07 | 2016-05-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Tunnel portal flexible nose-shaped rolling stone discharging and guiding shed tunnel structure and designing method thereof |
| CN105603893B (en) * | 2016-03-07 | 2017-08-08 | 中国科学院、水利部成都山地灾害与环境研究所 | Tunnel face flexibility nose-shaped Rolling Stone row leads shed hole structure body and its design method |
| CN106012879A (en) * | 2016-07-10 | 2016-10-12 | 中国电建集团贵阳勘测设计研究院有限公司 | Water and electricity exploration cave mouth safety protection method and device |
| CN110158618A (en) * | 2019-06-28 | 2019-08-23 | 四川省交通勘察设计研究院有限公司 | A kind of novel backfill structure and earth-filling method applied to open cut tunnel hole top |
| CN110242306A (en) * | 2019-06-28 | 2019-09-17 | 四川省交通勘察设计研究院有限公司 | Open cut tunnel anti-side laminated structure and construction method |
| CN111424571A (en) * | 2020-03-31 | 2020-07-17 | 四川省公路规划勘察设计研究院有限公司 | A kind of rockfall-resistant impact shed cave structure |
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| Publication number | Publication date |
|---|---|
| CN104594229B (en) | 2017-01-25 |
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