CN209510325U - A kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch - Google Patents
A kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch Download PDFInfo
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- CN209510325U CN209510325U CN201822233553.8U CN201822233553U CN209510325U CN 209510325 U CN209510325 U CN 209510325U CN 201822233553 U CN201822233553 U CN 201822233553U CN 209510325 U CN209510325 U CN 209510325U
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Abstract
The utility model relates to a kind of drill+blast tunnel structures using prefabrication and assembly construction inverted arch, arch is Tunnel, it is cast-in-place arch wall secondary lining in Tunnel, cast-in-place arch wall secondary lining lower end is connected cyclization by cast-in-place inverted arch lining cutting with the assembled inverted arch prefabricated section of bottom；Assembled inverted arch prefabricated section both side ends are provided with assembled inverted arch block two sides bellend, and end face is provided with tenon, dock with the blind mortise of cast-in-place inverted arch lining cutting end face.The utility model meets the basic structure pattern requirement of tunnel assembled inverted arch, and inverted arch structure is prefabricated using batch production, standardization, and quality assurance is reliable, and quality and intensity of prefabricated components etc. are well many compared to cast-in-place structural.
Description
Technical field
The utility model belongs to tunnels and underground engineering technical field, and in particular to a kind of brill using prefabrication and assembly construction inverted arch
Quick-fried method tunnel structure.
Background technique
It is more and more new technologies, new process, new with the continuous improvement of the technology of building, construction level and construction requirements
Application of construction method is into the construction of tunnels and underground engineering.Assembled architecture is the major transformation of mode of construction, is conducive to save money
Source reduces construction pollution, improves operating environment, improves labor productivity, improves standardized work and guarantee quality safety water
It is flat.But it is limited to various factors, the mode of construction in drill bursting construction tunnel is still based on cast-in-place at present, assembled constructing tunnel
Ratio is very low, and still there is a big difference compared with country advocates the related requirement of Development of Green Building for this.
It being counted according to the railway tunnel runed at present, especially Railway Tunnel, there is drum on the arch of bottom in part tunnel,
It the diseases such as rises soil, railway roadbed craze and transfiguration is caused when serious, cause tunnel to drive a vehicle speed limit, affect the normal operation of high-speed rail.
By examination, tunnel inverted arch quality is not enough also one of influence factor, it is therefore necessary to be explored novel, more structurally sound
Tunnel inverted arch structural shape and perform technology mode.
Prefabricated construction is easily controllable with construction quality, speed of application is fast, do mechanization operation degree is high, construction behaviour
Make many advantages, such as personnel are few.Especially for Tunnel Engineering, elevating mechanism level of operation effectively reduces operation people in hole
Member is the important guarantee for promoting personnel safety, improving demographic dividend.Currently, prefabricated construction has taken in house construction engineering
Preferable application was obtained, is exactly prefbricated tunnel lining in the embodiment of Tunnel Engineering, therefore with construction technology and corollary equipment
Development, assembled tunnel-liner will become tunnel construction and underground engineering industrialization, mechanization, intelligentized development trend.
Summary of the invention
The purpose of the utility model is to provide a kind of drill+blast tunnel structures using prefabrication and assembly construction inverted arch, meet tunnel dress
Basic structure pattern requirement with formula inverted arch, inverted arch structure is prefabricated using batch production, standardization, and quality assurance is reliable.
The technology employed by the present utility model is
A kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch, it is characterised in that:
Arch is Tunnel, is cast-in-place arch wall secondary lining, cast-in-place arch wall secondary lining in Tunnel
Lower end is connected cyclization by cast-in-place inverted arch lining cutting with the assembled inverted arch prefabricated section of bottom；
Assembled inverted arch prefabricated section both side ends are provided with assembled inverted arch block two sides bellend, and end face is provided with tenon,
It is docked with the blind mortise of cast-in-place inverted arch lining cutting end face.
Tunnel is stablized by steelframe lock foot anchoring stock.
Reinforcing bar binding in assembled inverted arch prefabricated section, cast-in-place inverted arch lining cutting and cast-in-place arch wall secondary lining is integrated.
When country rock is soil property or is poor, Tunnel is band steelframe Tunnel, is connected using fashioned iron/grid
It connects steelframe and assembled inverted arch prefabricated section is connected with steelframe Tunnel.
Assembled inverted arch prefabricated section end is provided with inverted arch block both ends pre-embedded steel slab, and band steelframe Tunnel bottom is set
Be equipped on steelframe and weld billet, fashioned iron/grid connection steelframe both ends by be welded to inverted arch block both ends pre-embedded steel slab and
It is welded on steelframe and realizes connection on billet.
Boss is arranged in assembled inverted arch prefabricated section top surface two sides, and shipping platform in hole is formed between boss.
Assembled inverted arch prefabricated section bottom is provided with the concrete cushion of inverted arch block lower part, after inverted arch below railway roadbed is in top
Phase backfill/filled layer.
The utility model has the advantage that
1, drill+blast tunnel inverted arch uses prefabricated assembled, and inverted arch structure is using batch production, prefabricated, the quality assurance of standardization
Reliably, quality and intensity of prefabricated components etc. are well many compared to cast-in-place structural.
2, after tunnel inverted arch is using prefabricated components assembly, standardization unified construction is realized, it is ensured that the excavation arc of inverted arch
Degree and structure size etc., specification inverted arch quality, avoid traditional drilling and blasting method operation tunnel inverted arch often excavate it is not in place, thus
The inverted arch structure for causing scene to perform differs the drawbacks such as larger with design size.
3, inverted arch can be achieved to dispose as early as possible, quickly disposes, inverted arch is as close as possible to face, it is ensured that tunnel structure is early closed,
Conducive to tunnel safety；
4, the mode that traditional drill+blast tunnel inverted arch sets trestle has been banned, inverted arch implements speed quickening, human resources are saved,
Mechanization degree is improved, preferably guarantees personnel safety；
5, tunnel uses assembled inverted arch, and each process operation can synchronize progress in subsequent hole, is conducive to the overall duration；
6, tunnel two sides ditch, cable etc. are contemplated that in conjunction with inverted arch prefabricated section and filled layer total implementation, optimize tunnel
Sectional form and structure size；
7, drill+blast tunnel uses assembled inverted arch block structure, and inverted arch no longer performs the preliminary bracings such as steelframe, not only saves
Process, also saves construction investment；
8, realizing the assembly of tunnel inverted arch, only beginning, the subsequent tunnel loopful that develop to assemble, and further promote tunnel
Mechanization, informationization, intelligent standard of construction.
Detailed description of the invention
Fig. 1 is soil property or poor section of the country rock weak broken tunnel structure pattern using prefabrication and assembly construction inverted arch.
Fig. 2 is the tunnel structure pattern that stone matter or the relatively preferable section of country rock use prefabrication and assembly construction inverted arch.
Fig. 3 is the tunnel structure pattern that hard stone matter country rock section uses prefabrication and assembly construction inverted arch.
Fig. 4 is the portion A schematic enlarged-scale view in Fig. 1.
Fig. 5 is the portion B schematic enlarged-scale view in Fig. 2.
In figure: 1- band steelframe Tunnel；2- is without steelframe Tunnel；The cast-in-place arch wall secondary lining of 3-；
The cast-in-place inverted arch lining cutting of 4-；5- steelframe lock foot anchoring stock；6- inverted arch block both ends pre-embedded steel slab；Billet is welded on 7- steelframe；8- assembly
Formula inverted arch block two sides bellend；Reserve lining cutting splice in 9- inverted arch block both ends；10- assembled inverted arch prefabricated section；11- inverted arch block
The concrete cushion of lower part；The rebate junction of 12- assembled inverted arch block two sides；13- secondary lining reinforcing bar and assembly inverted arch
The connection of end reserved steel bar；Ditch and cable trough in the hole 14-；15- ballast bed of track；16- fashioned iron/grid connects steelframe；17- assembly
Shipping platform in the hole formed after inverted arch；Inverted arch later period backfill/filled layer below 18- railway roadbed.
Specific embodiment
The utility model is described in detail With reference to embodiment.
Assembled architecture is the major transformation of mode of construction, is conducive to economize on resources, reduces construction pollution, improves operation ring
Production efficiency, promoting standardsization construction are improved in border.After drill+blast tunnel uses assembled inverted arch, alternative traditional inverted arch stack
Bridge mode can stay close excavation face after inverted arch precast assembly, realize that Fast Installation performs, while ensuring inverted arch quality
Improve the safety in tunnel.It is limited to various factors, the mode of construction in drill bursting construction tunnel bores quick-fried still based on cast-in-place at present
The ratio of method assembled constructing tunnel is also very low, and there are also very big differences compared with country advocates the requirement of Development of Green Building for this
Away from, it would be highly desirable to it studies, being promoted improves.This carries out the series of studies of assembled inverted arch first against drill+blast tunnel, invents one kind
Using the drill+blast tunnel structural shape of prefabrication and assembly construction inverted arch, it is developed to after inverted arch assembly technology and technology maturation, then gradually
Drill+blast tunnel loopful lining cutting assembly promotes mechanization, intelligent level that tunnel is built.
The utility model relates to a kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch, arch is tunnel initial-stage branch
Shield, is cast-in-place arch wall secondary lining 3 in Tunnel, cast-in-place 3 lower end of arch wall secondary lining by cast-in-place inverted arch lining cutting 4 and
The assembled inverted arch prefabricated section 10 of bottom is connected cyclization；10 both side ends of assembled inverted arch prefabricated section are provided with assembled inverted arch block
Two sides bellend 8, end face is provided with tenon, docks with the blind mortise of cast-in-place 4 end face of inverted arch lining cutting.Tunnel passes through steelframe
Lock foot anchoring stock 5 is stablized.Reinforcing bar binding in assembled inverted arch prefabricated section 10, cast-in-place inverted arch lining cutting 4 and cast-in-place arch wall secondary lining 3
It is integrated.
When country rock is soil property or is poor, Tunnel is band steelframe Tunnel 1, using fashioned iron/grid
Assembled inverted arch prefabricated section 10 is connected by connection steelframe 16 with steelframe Tunnel 1.Assembled inverted arch prefabricated section 10
End is provided with inverted arch block both ends pre-embedded steel slab 6, and band 1 bottom of steelframe Tunnel is provided with welding billet 7 on steelframe,
It is welded on billet 7 by being welded on inverted arch block both ends pre-embedded steel slab 6 and steelframe at fashioned iron/grid connection 16 both ends of steelframe
Realize connection.
When country rock is stone matter or is preferable, Tunnel is without steelframe Tunnel 2, without steelframe tunnel
Preliminary bracing 2 is stablized by steelframe lock foot anchoring stock 5, is not needed to prefabricated without steelframe Tunnel 2 and assembled inverted arch
Block 10 is attached.
Boss is arranged in 10 top surface two sides of assembled inverted arch prefabricated section, and shipping platform 17 in hole is formed between boss.Assembled
10 bottom of inverted arch prefabricated section is provided with the concrete cushion 11 of inverted arch block lower part, and top is the railway roadbed lower section inverted arch later period to backfill/fill out
Fill layer 18.
The field conduct process of the utility model are as follows:
1, when country rock is soil property or is poor, drill+blast tunnel is excavated using benching tunnelling method, and arch wall preliminary bracing sets steelframe；When
When country rock is stone matter or is preferable, drill+blast tunnel is excavated using benching tunnelling method or full section method, and whether arch wall sets up steelframe according to existing
Depending on field needs.
2, it after inverted arch excavates, is levelling, is accurately positioned and places assembled inverted arch block.When country rock is soil property or is poor, use
Inverted arch block is connected by fashioned iron with the steelframe of preliminary bracing, and preliminary bracing closure cyclization is conducive to stress；When country rock be stone matter or compared with
When good, arch wall steelframe can be stablized by lock foot anchoring stock, not need to be attached arch wall steelframe and assembled inverted arch block at this time.
3, when being connected between assembled inverted arch block and arch wall preliminary bracing steelframe according to fashioned iron, to guarantee fashioned iron and correspondence
The space of arch wall secondary lining thickness, inverted arch block both ends are designed as bellend, pre-buried good steel plate when prefabricated, using fashioned iron and initial stage
Pre-buried steel plate connection on supporting steelframe.To ensure to connect closure and closely knit, the junction of connection fashioned iron and preliminary bracing steelframe
It can be adjusted by increasing backing plate or longitudinal direction sets fashioned iron series connection welding or using modes such as extension type fashioned iron.
4, assembled inverted arch two sides reserved steel bar connector, later period are attached with arch wall lining cutting reinforcing bar, it is ensured that lining cutting reinforcing bar
Closed loop is formed, then pours lining concrete, lining cutting stress closure.If the secondary lining in tunnel does not set reinforcing bar, at this time inverted arch block two
Side not reserved steel bar connector.
5, after inverted arch block assembly, the inverted arch block top surface formed in advance can be used as transport channel or shipping platform in hole.It faces upward
The structural shape and size of arch block will ensure that it is formed by shipping platform width and meets transport work of normally constructing in Tunnel
The requirement such as industry.The dotted portion of this figure inverted arch block structure upper is signal, indicates that a variety of structures can be used in assembled inverted arch block
Pattern is not limited to illustrate this one kind.The space later period above shipping platform is filled using cast-in-place mode, increases the whole of tunnel inverted arch
Body, until railway roadbed bottom, has the condition for performing railway roadbed.
6, when formation condition is preferable, the space between assembled inverted arch prefabricated section and railway roadbed is also contemplated that using assembled
The mode of filling block, the ditch of tunnel two sides and cable trough, which are contemplated that, at this time is incorporated into inverted arch filling block, so can also be into one
The rail flowering structure and cross dimensions of step optimization drill+blast tunnel, further reduce investment outlay.
7, the assembled inverted arch block of drill+blast tunnel is that batch production is prefabricated, rear accurately fixed using special equipment in transport to hole
Position installation, concave-convex tenon structure is reserved in two sides in advance when inverted arch block is prefabricated, to ensure cast-in-place secondary of prefabricated inverted arch block and later period
Lining cutting, which is realized, closely bonds combination.
8, assembled inverted arch block longitudinally may be designed as 1.5 ~ 3.0m/ block；Drilling and blasting method single-track tunnel inverted arch circumferential direction piecemeal can be by 1
~ 2 pieces of considerations, double track tunnel inverted arch circumferential direction can consider by 2 ~ 3 pieces, need to specifically combine in hole depending on equipment assembly ability.In ability
When permission, vertical as far as possible, circumferential block size more greatly, to reduce lifting and positioning number, reduces seam quantity, improves operation work
Effect, improves the stress and waterproof ability of structure.
9, after assembling in inverted arch block hole, transport channel in tunnel inverted arch structure and hole is quickly formed, excavate, slag tap in hole,
The operations such as supporting can normally be carried out, and the subsequent processes such as arch wall lining cutting, inverted arch block filled layer that perform can synchronize development, improve tunnel
Comprehensive implement work efficiency.
The present invention is a kind of drill+blast tunnel structural shape using prefabrication and assembly construction inverted arch.With concrete engineering tunnel cross-section
The differences such as size, relevant parameter such as: the dimensioning of the structural shape of assembled inverted arch prefabricated section, assembled inverted arch prefabricated section
Very little, inverted arch piecemeal pattern, inverted arch block filling mode, inverted arch block and connection type of Tunnel etc., can be according to practical work
Journey needs, adaptation to local conditions, specific to determine, either large or small, more or less long or short or strong or weak.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are practical new by reading this
Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (7)
1. a kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch, it is characterised in that:
Arch is Tunnel, is cast-in-place arch wall secondary lining (3), cast-in-place arch wall secondary lining in Tunnel
(3) lower end is connected cyclization by cast-in-place inverted arch lining cutting (4) with the assembled inverted arch prefabricated section (10) of bottom；
Assembled inverted arch prefabricated section (10) both side ends are provided with assembled inverted arch block two sides bellend (8), and end face is provided with convex
Tenon is docked with the blind mortise of cast-in-place inverted arch lining cutting (4) end face.
2. a kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch according to claim 1, it is characterised in that:
Tunnel is stablized by steelframe lock foot anchoring stock (5).
3. a kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch according to claim 2, it is characterised in that:
Reinforcing bar binding in assembled inverted arch prefabricated section (10), cast-in-place inverted arch lining cutting (4) and cast-in-place arch wall secondary lining (3) is one
Body.
4. a kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch according to claim 3, it is characterised in that:
When country rock is soil property or is poor, Tunnel is band steelframe Tunnel (1), is connected using fashioned iron/grid
It connects steelframe (16) and assembled inverted arch prefabricated section (10) is connected with steelframe Tunnel (1).
5. a kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch according to claim 4, it is characterised in that:
Assembled inverted arch prefabricated section (10) end is provided with inverted arch block both ends pre-embedded steel slab (6), band steelframe Tunnel (1)
Bottom is provided with welding billet (7) on steelframe, and fashioned iron/grid connection steelframe (16) both ends are by being welded to inverted arch block two
It holds to weld on pre-embedded steel slab (6) and steelframe and realizes connection on billet (7).
6. a kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch according to claim 3, it is characterised in that:
Boss is arranged in assembled inverted arch prefabricated section (10) top surface two sides, and shipping platform (17) in hole is formed between boss.
7. a kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch according to claim 3, it is characterised in that:
Assembled inverted arch prefabricated section (10) bottom is provided with the concrete cushion (11) of inverted arch block lower part, and top is to face upward below railway roadbed
Encircle later period backfill/filled layer (18).
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| CN201822233553.8U CN209510325U (en) | 2018-12-28 | 2018-12-28 | A kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch |
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| CN201822233553.8U CN209510325U (en) | 2018-12-28 | 2018-12-28 | A kind of drill+blast tunnel structure using prefabrication and assembly construction inverted arch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667587A (en) * | 2018-12-28 | 2019-04-23 | 中铁第勘察设计院集团有限公司 | Using the drill+blast tunnel structure of prefabrication and assembly construction inverted arch |
| CN111764925A (en) * | 2020-06-29 | 2020-10-13 | 中铁第一勘察设计院集团有限公司 | Tunnel adopting prefabricated inverted arch module |
| CN111794766A (en) * | 2020-06-29 | 2020-10-20 | 中铁第一勘察设计院集团有限公司 | Tunnel construction method adopting prefabricated inverted arch module |
| CN114060062A (en) * | 2021-12-08 | 2022-02-18 | 刁志刚 | Construction method for side hole primary support buckling arch in construction of underground excavated station by using hole-pile method |
| CN114233327A (en) * | 2021-11-25 | 2022-03-25 | 中国建筑第八工程局有限公司 | Longitudinal splicing structure of tunnel assembly type inverted arch and construction method thereof |
-
2018
- 2018-12-28 CN CN201822233553.8U patent/CN209510325U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667587A (en) * | 2018-12-28 | 2019-04-23 | 中铁第勘察设计院集团有限公司 | Using the drill+blast tunnel structure of prefabrication and assembly construction inverted arch |
| CN111764925A (en) * | 2020-06-29 | 2020-10-13 | 中铁第一勘察设计院集团有限公司 | Tunnel adopting prefabricated inverted arch module |
| CN111794766A (en) * | 2020-06-29 | 2020-10-20 | 中铁第一勘察设计院集团有限公司 | Tunnel construction method adopting prefabricated inverted arch module |
| CN111794766B (en) * | 2020-06-29 | 2022-08-05 | 中铁第一勘察设计院集团有限公司 | Tunnel construction method adopting prefabricated inverted arch module |
| CN114233327A (en) * | 2021-11-25 | 2022-03-25 | 中国建筑第八工程局有限公司 | Longitudinal splicing structure of tunnel assembly type inverted arch and construction method thereof |
| CN114233327B (en) * | 2021-11-25 | 2024-03-19 | 中国建筑第八工程局有限公司 | Longitudinal splicing structure of tunnel assembly type inverted arch and construction method thereof |
| CN114060062A (en) * | 2021-12-08 | 2022-02-18 | 刁志刚 | Construction method for side hole primary support buckling arch in construction of underground excavated station by using hole-pile method |
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