CN108612128A - The dual or multi hole tunnel framing of open cut single layer is against support replacement construction method - Google Patents
The dual or multi hole tunnel framing of open cut single layer is against support replacement construction method Download PDFInfo
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- CN108612128A CN108612128A CN201810459652.XA CN201810459652A CN108612128A CN 108612128 A CN108612128 A CN 108612128A CN 201810459652 A CN201810459652 A CN 201810459652A CN 108612128 A CN108612128 A CN 108612128A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a kind of dual or multi hole tunnel framings of open cut single layer against support replacement construction method, for bis- (more) hole single layer road tunnel structures, structure is without framing, it is performed by stages using open cut bottom, it excavated foundation pit, completed by way of structure time phasing by stages, reduce the influence to present situation traffic, saves place space and project cost.Foundation pit excavates interface and sets middle row's supporting construction by stages, when later stage excavation of foundation pit, for middle row's supporting construction, " inverse " support replacement is from top to bottom carried out, the Water And Earth Pressures of later stage excavation pit lateral wall are reached into safely Zhong Qiang and are tiltedly thrown at support, middle row's supporting construction is abolished after safety unloading.The present invention can solve to build road tunnel under the narrow site condition in city, the technical barriers such as traffic data process difficulty, the lack of space faced of constructing.
Description
Technical field
The present invention relates to the technologies that a kind of cut and cover method builds road tunnel.
Background technology
With the Urban traffic demand of sharp increase, home and abroad large size city accelerates two layers of transport development.Bustling downtown area
It is increasingly common that area's cut and cover method builds road tunnel.Foundation pit surrounding enviroment are complicated, construction space is narrow, to reduce to present situation traffic
It influences, need to often meet the requirement of vehicle supervision department's " accounting for one also one ", " cannot interrupt ".And road tunnel structure foundation pit width is normal
Up to 30-50m, place is particularly thorny.
To solve the problems, such as this, frequently with method have " structure framing ", " cap excavation method " etc..Aforesaid way respectively has itself
The shortcomings that and deficiency.
" structure framing " refer specifically to each cabin of structure is individually separated, side wall substitution in wall, then carry out traffic dispersion, point
Phase excavation pit, each cabin structure of constructing.Wall during this form need to use twice side wall to substitute together, makes to increase engineering
Valence.
" cap excavation method " can be specifically divided into " top-down straight method method " and " top-down invers method method ", and when implementation first carries out phase traffic and dredges
Solution, cast foundation pit enclosure structure, construction cover board or structure roof, then restores traffic above-ground, carries out excavation of foundation pit, bottom by
Under supreme pouring structure, reverse construction excavates with soil layer, from top to bottom pouring structure.After structure pours, top-down straight method method
It is still necessary to carry out a phase traffic data process again, cover board is removed, traffic above-ground is then restored.
In " top-down straight method method ", needs to be laid with temporary roof cover at the beginning of engineering, builds temporary pavement, need to remove at the end of engineering
Temporary pavement builds formal road surface, causes the costly of head cover, and need to carry out traffic data process twice, larger to traffic impact.
In " top-down invers method method ", structure is inversely built up on from lower, and there are construction stages and service stage structure stress to turn
Problem is changed, meanwhile, the connection at each position of structure and node processing are very high to construction requirement, deal with improperly and easily cause internal force, prevent
Water problems.
In cap excavation method, earthwork outward transport, materials arrival etc. in foundation pit need to carry out at the construction hole that cover board top is reserved,
Construction efficiency is relatively low, accordingly extends the duration, improves project cost.
Invention content
The object of the present invention is to provide a kind of dual or multi hole tunnel framings of open cut single layer against support replacement construction method, to solve city
City builds in narrow place road tunnel, the technical problems such as caused traffic data process, construction site deficiency.
In order to achieve the above-mentioned object of the invention, the technical solution adopted in the present invention is as follows.
A kind of dual or multi hole tunnel framing of open cut single layer includes the following steps against support replacement construction method：
Step 1) carries out traffic data process, and side construction guard fender (2) is first excavated in setting, and smooth location, construction ground intercepts water temporarily
Ditch (1)；
Step 2) construction outside supporting construction (3), middle row's supporting construction (4), lattice column (5)；
Step 3) construction Guan Liang and back retaining wall, layering carry out excavation of foundation pit, set up first excavation side first successively
(6), second support (7), third road support (8) are supportted, until foundation pit bottom；
Step 4) construction first excavate side structure bottom plate (9) and part the structure side wall containing waterproof layer, floor structure (9) every
3-6 meters need the 1 meter wide element of evagination is mixed to be held out against with middle row's supporting construction (4), and third road support (8) is removed after forming intensity；Base top
It performs in advance and first excavates skew back throwing support group seat (23)；
Step 5) construction first excavates wall (14) to second in structure side wall (10) of the side containing waterproof layer, structure and supports (7)
Under, after forming intensity, sets up outer skew back and throw support (11), interior skew back throwing support (12) and corresponding short support (13), remove second
It supports (7)；
Step 6) construction side wall and first excavation structure roof (15) of the side containing waterproof layer, structure roof (15) is every 3-6 meters
It needs evagination 1m wide elements are mixed to be held out against with middle row's supporting construction (4), is formed after intensity to remove and support (6), lattice column (5), outside for first
Skew back throws support (11)；
Step 7) performs bracket in structure roof (17), first excavates side backfill (16) to designed elevation, performs pavement structure,
Interim intercepting ditch and enclosing are removed, traffic data process is adjusted, restores first to excavate side vehicle pass-through；
Step 8) excavates side and sets enclosing afterwards, performs lattice column (21), outside supporting construction (22), earth excavation is to first
It supports below (18), row's supporting construction (4) in gradually removing, first of support is set up using bracket (17) in structure roof in advance
(18)；
Step 9) is excavated afterwards below side earth excavation to second support (19), and row's supporting construction (4) in gradually removing adds
Length supports (13) to outside supporting construction (22), and side second support (19) is excavated after formation；
Step 10) excavates inclined-plane below side earth excavation to third road support (20) afterwards, and supporting construction is arranged in gradually removing
(4), third road support (20) is set up；
Step 11) excavates side earth excavation to bottom is cheated afterwards, row's supporting construction (4) in gradually removing, and artificial clear slot bottom pours
Bed course excavates side half range structure base slab (24) and structure side wall of the part containing waterproof layer to third road and supports under (20) after construction
Third road support (20) is removed after forming intensity by side；
Step 12) is excavated after continuing construction below structure side wall of the side containing waterproof layer to second support (19), is formed strong
Tiltedly throwing support (26) is set up after degree, removes second support (19) and corresponding interior skew back throws support (12)；
Step 13) excavates side structure side wall and the structure roof (28) containing waterproof layer after continuing construction, is torn open after forming intensity
(26), first of support (18) and lattice column (21) are supportted except tiltedly being thrown in hole；
Step 14) excavates side backfill (29) to designed elevation afterwards, performs pavement structure, removes interim intercepting ditch and enclosing,
It resumes traffic；Road surface, decoration and electromechanical affiliated facility are performed in hole；
In above-mentioned construction procedure by taking double-pore structure as an example, porous structure can be by similarly, being divided to two phases or more phases to implement.
Advantages of the present invention is as follows：The present invention is directed to bis- (more) hole single layer road tunnel structures, builds mode based on open cut is suitable,
By rationally adjusting process, excavation pit, optimizes support replacement mode by stages, avoids each caused by " structure framing " and " cap excavation method "
Kind shortcoming.The present invention solves the problems, such as the safe dismounting of row's supporting construction in foundation pit, and each process stress check calculation is reasonable, pacifies
Entirely, middle wall construction does not occur box out, reduces difficulty of construction, has ensured construction efficiency, saves duration and cost.The present invention's
Structure sequentially forms, good integrity, and secondary stress is small, and waterproof effect is easy to ensure.
Description of the drawings
Fig. 1 is the construction schematic diagram of the step 1 of the present invention.
Fig. 2 is the construction schematic diagram of the step 2 of the present invention.
Fig. 3 is the construction schematic diagram of the step 3 of the present invention.
Fig. 4 is the construction schematic diagram of the step 4 of the present invention.
Fig. 5 is the construction schematic diagram of the step 5 of the present invention.
Fig. 6 is the construction schematic diagram of the step 6 of the present invention.
Fig. 7 is the construction schematic diagram of the step 7 of the present invention.
Fig. 8 is the construction schematic diagram of the step 8 of the present invention.
Fig. 9 is the construction schematic diagram of the step 9 of the present invention.
Figure 10 is the construction schematic diagram of the step 10 of the present invention.
Figure 11 is the construction schematic diagram of the step 11 of the present invention.
Figure 12 is the construction schematic diagram of the step 12 of the present invention.
Figure 13 is the construction schematic diagram of the step 13 of the present invention.
Figure 14 is the construction schematic diagram of the step 14 of the present invention.
It is numbered in figure：(1) row's supporting construction, (5) are first in intercepting ditch, (2) construction guard fender, (3) outside supporting construction, (4)
Excavating side lattice column, (6), first the support of side second is first excavated in first of excavation side support, (7), (8) first excavate side third road branch
Support, (9) first excavate side structure side wall is first excavated in side structure bottom plate, (10), (11) outer skew back throws support, (12) interior skew back throws support,
(13) short support, wall, (15) are first excavated after side structure top plate, (16) first excavate side backfill, (17) bracket, (18) in (14) structure
Excavating first of side support, (19), the support of side third road is excavated in the support of excavation side second, (20) afterwards afterwards, (21) excavate side lattice afterwards
Structure column, (22) excavate collateral protection structure, (23) and first excavate skew back afterwards to be thrown after support group seat, (24) excavate side structure bottom plate, (25) afterwards
Excavate skew back throwing support group seat, (26) excavate skew back throwing support afterwards, (27) excavate side structure side wall, (28) excavation side structure top afterwards afterwards
Side backfill is excavated in plate, (29) afterwards.
Specific implementation mode
Embodiments of the present invention are referring to shown in Fig. 1 to Figure 14.
The present invention is directed to bis- (more) hole single layer road tunnel structures, performs road tunnel using open cut bottom, structure is not
Framing is carried out, by way of perform by stages, save space space and project cost.Now by taking double-pore structure as an example, construction is illustrated
Method and procedure arrangement.
By diagram as it can be seen that when excavating side excavation of foundation pit afterwards, for middle row's supporting construction, " inverse " support replacement is from top to bottom carried out,
Rear excavation side side wall Water And Earth Pressures are reached into safely Zhong Qiang and are tiltedly thrown at support, middle row's supporting construction is abolished after unloading safely.
In each process, foundation pit supporting system is safe and reliable, does not occur few support or broken storehouse condition of construction.
In excavation of foundation pit process, by tiltedly throwing the reasonable utilization of support, does not occur excessive additional load at middle wall, do not apply
The case where work box out.
The step of the present invention：
Step 1) carries out traffic data process, and side construction guard fender (2) is first excavated in setting, and smooth location, construction ground intercepts water temporarily
Ditch (1)；
Step 2) construction outside supporting construction (3), middle row's supporting construction (4), lattice column (5)；
Step 3) construction Guan Liang and back retaining wall, layering carry out excavation of foundation pit, set up first excavation side first successively
(6), second support (7), third road support (8) are supportted, until foundation pit bottom；
Step 4) construction first excavate side structure bottom plate (9) and part the structure side wall containing waterproof layer, floor structure (9) every
3-6 meters need the 1 meter wide element of evagination is mixed to be held out against with middle row's supporting construction (4), and third road support (8) is removed after forming intensity；Base top
It performs in advance and first excavates skew back throwing support group seat (23)；
Step 5) construction first excavates wall (14) to second in structure side wall (10) of the side containing waterproof layer, structure and supports (7)
Under, after forming intensity, sets up outer skew back and throw support (11), interior skew back throwing support (12) and corresponding short support (13), remove second
It supports (7)；
Step 6) construction side wall and first excavation structure roof (15) of the side containing waterproof layer, structure roof (15) is every 3-6 meters
It needs evagination 1m wide elements are mixed to be held out against with middle row's supporting construction (4), is formed after intensity to remove and support (6), lattice column (5), outside for first
Skew back throws support (11)；
Step 7) performs bracket in structure roof (17), first excavates side backfill (16) to designed elevation, performs pavement structure,
Interim intercepting ditch and enclosing are removed, traffic data process is adjusted, restores first to excavate side vehicle pass-through；
Step 8) excavates side and sets enclosing afterwards, performs lattice column (21), outside supporting construction (22), earth excavation is to first
It supports below (18), row's supporting construction (4) in gradually removing, first of support is set up using bracket (17) in structure roof in advance
(18)；
Step 9) is excavated afterwards below side earth excavation to second support (19), and row's supporting construction (4) in gradually removing adds
Length supports (13) to outside supporting construction (22), and side second support (19) is excavated after formation；
Step 10) excavates inclined-plane below side earth excavation to third road support (20) afterwards, and supporting construction is arranged in gradually removing
(4), third road support (20) is set up；
Step 11) excavates side earth excavation to bottom is cheated afterwards, row's supporting construction (4) in gradually removing, and artificial clear slot bottom pours
Bed course excavates side half range structure base slab (24) and structure side wall of the part containing waterproof layer to third road and supports under (20) after construction
Third road support (20) is removed after forming intensity by side；
Step 12) is excavated after continuing construction below structure side wall of the side containing waterproof layer to second support (19), is formed strong
Tiltedly throwing support (26) is set up after degree, removes second support (19) and corresponding interior skew back throws support (12)；
Step 13) excavates side structure side wall and the structure roof (28) containing waterproof layer after continuing construction, is torn open after forming intensity
(26), first of support (18) and lattice column (21) are supportted except tiltedly being thrown in hole；
Step 14) excavates side backfill (29) to designed elevation afterwards, performs pavement structure, removes interim intercepting ditch and enclosing,
It resumes traffic；Road surface, decoration and electromechanical affiliated facility are performed in hole；
Above-described embodiment and attached drawing are by taking double-pore structure as an example, and porous structure can be by similarly, being divided to two phases or more phases to implement.
Claims (1)
1. a kind of dual or multi hole tunnel framing of open cut single layer includes the following steps against support replacement construction method：
Step 1) carries out traffic data process, and side construction guard fender (2), smooth location, the interim intercepting ditch of construction ground are first excavated in setting
(1)；
Step 2) construction outside supporting construction (3), middle row's supporting construction (4), lattice column (5)；
Step 3) construction Guan Liang and back retaining wall, layering carry out excavation of foundation pit, set up first excavate first of the support in side successively
(6), second support (7), third road support (8), until foundation pit bottom；
The structure side wall of side structure bottom plate (9) and part containing waterproof layer is first excavated in step 4) construction, and floor structure (9) is every 3-6
Rice needs the 1 meter wide element of evagination is mixed to be held out against with middle row's supporting construction (4), and third road support (8) is removed after forming intensity；Base top is advance
It performs and first excavates skew back throwing support group seat (23)；
Step 5) construction is first excavated wall (14) to second in structure side wall (10) of the side containing waterproof layer, structure and is supported under (7), shape
After intensity, sets up outer skew back and throw support (11), interior skew back throwing support (12) and corresponding short support (13), remove second support
(7)；
Step 6) construction side wall and first excavation structure roof (15) of the side containing waterproof layer, structure roof (15) need outer every 3-6 meters
Convex 1m wide elements are mixed to be held out against with middle row's supporting construction (4), and first support (6), lattice column (5), outer skew back are removed after forming intensity
Throw support (11)；
Step 7) performs bracket in structure roof (17), first excavates side backfill (16) to designed elevation, performs pavement structure, removes
Interim intercepting ditch and enclosing, adjust traffic data process, restore first to excavate side vehicle pass-through；
Step 8) excavates side and sets enclosing afterwards, performs lattice column (21), outside supporting construction (22), earth excavation to first of support
(18) lower section, row's supporting construction (4) in gradually removing set up first of support using bracket (17) in structure roof in advance
(18)；
Step 9) is excavated afterwards below side earth excavation to second support (19), and row's supporting construction (4) in gradually removing lengthens short
(13) to outside supporting construction (22) is supported, side second support (19) is excavated after formation；
Step 10) excavates inclined-plane below side earth excavation to third road support (20) afterwards, row's supporting construction (4) in gradually removing,
Set up third road support (20)；
Step 11) excavates side earth excavation to bottom is cheated afterwards, row's supporting construction (4) in gradually removing, and artificial clear slot bottom pours pad
Layer is excavated after construction below side half range structure base slab (24) and structure side wall of the part containing waterproof layer to third road support (20),
Third road support (20) is removed after forming intensity；
Step 12) is excavated after continuing construction below structure side wall of the side containing waterproof layer to second support (19), after forming intensity
Tiltedly throwing support (26) is set up, second support (19) is removed and corresponding interior skew back throws support (12)；
Step 13) excavates side structure side wall and the structure roof (28) containing waterproof layer after continuing construction, and hole is removed after forming intensity
Interior oblique throwing support (26), first of support (18) and lattice column (21)；
Step 14) excavates side backfill (29) to designed elevation afterwards, performs pavement structure, removes interim intercepting ditch and enclosing, restores
Traffic；Road surface, decoration and electromechanical affiliated facility are performed in hole；
Above-mentioned construction procedure is directed to double-pore structure, and porous structure can be divided to two phases or more phases to implement by same mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810459652.XA CN108612128B (en) | 2018-05-15 | 2018-05-15 | Open-cut single-layer double or multi-hole tunnel framing reverse support-changing construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810459652.XA CN108612128B (en) | 2018-05-15 | 2018-05-15 | Open-cut single-layer double or multi-hole tunnel framing reverse support-changing construction method |
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| CN108612128B CN108612128B (en) | 2020-04-14 |
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Cited By (7)
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|---|---|---|---|---|
| CN109667229A (en) * | 2018-10-17 | 2019-04-23 | 中铁二十四局集团安徽工程有限公司 | A kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting |
| CN110725324A (en) * | 2019-10-28 | 2020-01-24 | 中天建设集团有限公司 | Shear wall high-limb guide wall conversion supporting structure and construction method thereof |
| CN111945743A (en) * | 2020-08-15 | 2020-11-17 | 中铁十一局集团第一工程有限公司 | Multi-layer unbalanced foundation pit supporting method suitable for staged excavation |
| CN112359867A (en) * | 2020-10-26 | 2021-02-12 | 广州地铁设计研究院股份有限公司 | Enclosure structure for auxiliary structure of underground station |
| CN112832254A (en) * | 2021-01-12 | 2021-05-25 | 上海市基础工程集团有限公司 | Supporting method for controlling top displacement of foundation pit in environment sensitive area |
| CN113638447A (en) * | 2021-08-31 | 2021-11-12 | 中铁二十局集团第一工程有限公司 | Construction method of main body structure of underpass type lake area section tunnel |
| CN114922226A (en) * | 2022-04-19 | 2022-08-19 | 苏坤建设(江苏)有限公司 | Method for staged construction of underpass |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109667229A (en) * | 2018-10-17 | 2019-04-23 | 中铁二十四局集团安徽工程有限公司 | A kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting |
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| CN112359867A (en) * | 2020-10-26 | 2021-02-12 | 广州地铁设计研究院股份有限公司 | Enclosure structure for auxiliary structure of underground station |
| CN112832254A (en) * | 2021-01-12 | 2021-05-25 | 上海市基础工程集团有限公司 | Supporting method for controlling top displacement of foundation pit in environment sensitive area |
| CN113638447A (en) * | 2021-08-31 | 2021-11-12 | 中铁二十局集团第一工程有限公司 | Construction method of main body structure of underpass type lake area section tunnel |
| CN113638447B (en) * | 2021-08-31 | 2022-09-06 | 中铁二十局集团第一工程有限公司 | Construction method of main body structure of underpass type lake area section tunnel |
| CN114922226A (en) * | 2022-04-19 | 2022-08-19 | 苏坤建设(江苏)有限公司 | Method for staged construction of underpass |
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| CN108612128B (en) | 2020-04-14 |
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