CN103924981A - Single-arch large-span shallow-buried excavation tunnel reinforcing system and construction method thereof - Google Patents
Single-arch large-span shallow-buried excavation tunnel reinforcing system and construction method thereof Download PDFInfo
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- CN103924981A CN103924981A CN201410173358.4A CN201410173358A CN103924981A CN 103924981 A CN103924981 A CN 103924981A CN 201410173358 A CN201410173358 A CN 201410173358A CN 103924981 A CN103924981 A CN 103924981A
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Abstract
The invention relates to a single-arch large-span shallow-buried excavation tunnel reinforcing system and a construction method thereof. During a single-arch large-span shallow-buried excavation tunnel construction process, risks such as deforming and collapsing exist, and reinforcing processing is needed. The single-arch large-span shallow-buried excavation tunnel reinforcing system is a supporting frame structure in a tunnel preliminary bracing part and comprises a combination steel pipe concrete column at a tunnel center line, the bottom end of the combination steel pipe concrete column is fixed at a column foundation, the top end of the combination steel pipe concrete column is fixed at the preliminary bracing part, bottom plates are arranged on the two sides of the column foundation, vertical supports are fixed above the bottom plates, the vertical supports and one end of an oblique support are fixed to the preliminary bracing part, one end of a horizontal support is fixed to the preliminary bracing part, and the other end of the horizontal support is fixed to the combination steel pipe concrete column and is firmly connected to the vertical supports. The system and method are used for reinforcing processing on a single-arch large-span shallow-buried excavation tunnel where accidents such as large deforming, collapsing and water bursting happen or are about to happen, the advantages of a door-shaped support and a sector support are combined, large span is changed into small span, and deforming caused by construction, and deforming caused by construction can be controlled effectively and quickly.
Description
Technical field
the invention belongs to tunnel and underground construction technical field, be specifically related to a kind of single arch greatly across shallow buried covered excavation tunnel reinforcement system and construction method thereof.
Background technology
Along with subway construction fast development, hidden construction process has obtained spatial development, the underground structure pattern of various complexity more and more occurs, and single arch large span section is as the Typical Representative of shallow buried covered excavation structure, be progressively widely used in the fields such as railway, highway, water conservancy, urban track traffic, city planting ductwork.Particularly in Construction of Urban Rail Traffic, single arch is the architectural style with its many space advantage such as tall and big, spacious, open and uniqueness thereof across Station greatly, becomes gradually first-selection.Consider that single arch is greatly across shallow buried covered excavation structural shape, stress condition, geological conditions, construction level, the impact of management of water equality many factors, in its work progress, there is large deformation, landslide, water burst equivalent risk, in some situation, must carry out consolidation process to it, to give full play to the self-supporting ability of country rock, control quickly and efficiently the distortion that construction causes, reduce construction risk, guarantee to construct that transport channel is unimpeded, the normal use of tunnel structure safety and periphery building, and create favorable conditions for follow-up construction.
Summary of the invention
The object of this invention is to provide a kind of single arch greatly across shallow buried covered excavation tunnel reinforcement system and construction method thereof, can fast, effectively control the surrouding rock deformation that construction causes.
The technical solution adopted in the present invention is:
Single arch, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Described reinforcement system is that single arch is greatly across door shape and the fan-shaped support framework structure combining in shallow buried covered excavation Tunnel, include the combined steel pipe concrete column of tunnel centerline, the patten that bottom surface, tunnel arranges is fixed in combined steel pipe concrete column bottom, and preliminary bracing is fixed on top;
On the bottom surface, tunnel of patten both sides, be provided with base plate, on base plate, same point is fixed with vertical supporting and oblique support, the opposite side of oblique support tendency combined steel pipe concrete column, and preliminary bracing is all fixed on the top of vertical supporting and oblique support;
Base plate top is provided with horizontal support, and preliminary bracing is fixed in horizontal support one end, and the other end is fixed on combined steel pipe concrete column, and is connected firmly with vertical supporting.
The preliminary bracing end of described base plate is provided with the lock foot anchoring stock that stretches into rock mass.
Described patten top, combined steel pipe concrete column bottom are enclosed with suspension column protection beam, and suspension column protection beam and patten are built and be integrated.
The below of the intersection of described vertical supporting and horizontal support, the both sides of vertical supporting, horizontal support is fixed with longitudinal link of angle steel type.
Described patten below is provided with stretches into anchor pole rock mass, that intersect.
Described base plate adopts shaped steel and sprayed mortar composition;
Described patten adopts cast-in-situ concrete or combination shaped steel composition;
Described combined steel pipe concrete column adopts seamless steel pipe and form concrete composition;
Described oblique support, vertical supporting and horizontal support adopt shaped steel or combination shaped steel.
Described cross binding cage construction is longitudinally many row's settings along tunnel, and longitudinal pitch is 1.0～5.0m;
Lateral separation between described vertical supporting and combined steel pipe concrete column is 3.0～5.0m;
Difference in height between described base plate and horizontal support is 3.0～5.0m;
The width of described combined steel pipe concrete column is 0.6～2.0m
The width of described patten is 1.0～2.0m, is highly 0.5～1.0m;
The same patten of described suspension column protection beam width is highly 0.5～1.0m.
Single arch, greatly across the construction method of shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Realized by following steps:
Step 1: build patten:
In the large preliminary bracing across shallow buried covered excavation tunnel of single arch, clear up empty slag, smooth location compacting, in the tunnel of bottom surface, tunnel, centerline formwork erection is built patten;
Step 2: build base plate:
On the bottom surface, tunnel of patten both sides, lay type steel support, welded wire fabric sheet, preliminary bracing structure and the patten of type steel support and both sides are connected firmly, and supporting end sets lock foot anchoring stock in the early stage, on type steel support and reinforced mesh, build base plate; The reserved oblique support of type steel support and vertical supporting junction steel plate and bolt;
Step 3: build combined steel pipe concrete column and suspension column protection beam:
On patten, set up combined steel pipe, colligation suspension column protection beam steel, formwork erection is built combined steel pipe concrete column and suspension column protection beam; The reserved horizontal support and connection steel plate of combined steel pipe and bolt;
Step 4: set up oblique support and vertical supporting:
Set up oblique support and vertical supporting, and by between itself and base plate, preliminary bracing by bolt, be welded to connect firmly;
Step 5: set up horizontal support:
Set up horizontal support, and by between itself and oblique support, vertical supporting, combined steel pipe concrete column, preliminary bracing by bolt, be welded to connect firmly;
Step 6: set up longitudinal link:
Set up longitudinal link, and will between itself and vertical supporting, horizontal support, be connected firmly.
The present invention has the following advantages:
For there is or be about to occur single consolidation process across shallow buried covered excavation tunnel greatly of encircleing of the accidents such as large deformation, landslide, water burst in the present invention.This structural shape is simple and clear, reasonable stress, give full play to the self-supporting ability of country rock, encircle greatly across shallow buried covered excavation tunnel structure pattern and section loading characteristic according to single, the ingenious mechanics advantage of shaped steel or Combined steel structure and the inner space of section of utilizing, in conjunction with the advantage of the support of door shape and fan-shaped support, realized " become greatly across into little across ", control quickly and efficiently the distortion that construction causes, guaranteed that construction transport channel is unimpeded, the normal use of tunnel structure safety and periphery building, and create favorable conditions for follow-up construction; Simultaneously, this structure has very strong operability, can realize factory operation, for strengthening construction gains time, there is higher economic benefit and social benefit, in the engineerings such as railway, highway, water conservancy, urban track traffic, city planting ductwork, have a wide range of applications.
Brief description of the drawings
Fig. 1 is structure section figure of the present invention.
Fig. 2 is A place enlarged drawing.
In figure, 1-base plate, the oblique support of 2-, 3-vertical supporting, 4-patten, 5-combined steel pipe concrete column, 6-suspension column protection beam, 7-horizontal support, the longitudinal link of 8-, 9-lock foot anchoring stock, 10-preliminary bracing, 11-rock mass.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
The one list the present invention relates to encircles greatly across shallow buried covered excavation tunnel reinforcement system, for single arch is greatly across the horizontal support framework structure of many rows longitudinally arranging in shallow buried covered excavation Tunnel 10, along tunnel, adopt door a shape and the fan-shaped braced structures combining, the passage of the transport point need of guaranteeing to construct is unimpeded.Support framework structure includes the combined steel pipe concrete column 5 of tunnel centerline, is the vertical Force transmission parts of key of support framework structure, and the patten 4 that bottom surface, tunnel arranges is fixed in bottom, and preliminary bracing 10 is fixed on top.Patten 4 provides combined steel pipe concrete column 5 required requirement for bearing capacity, and is conducive to a certain extent reinforcement system longitudinal stability.On the bottom surface, tunnel of patten 4 both sides, be provided with base plate 1, base plate 1 top is fixed with vertical supporting 3, and preliminary bracing 10 is fixed on vertical supporting 3 tops.Preliminary bracing 10 is fixed in vertical supporting 3 and oblique support 2 one end; Preliminary bracing 10 is fixed in horizontal support 7 one end, and the other end is fixed on combined steel pipe concrete column 5, and is connected firmly with vertical supporting 3.Oblique support 2 and vertical supporting 3 respectively and between base plate 1, preliminary bracing by bolt or be welded to connect firmly, as the main vertical Force transmission parts of reinforcement system, and the channel width that needs of the transport point of guaranteeing to construct.Between horizontal support 7 and oblique support 2, vertical supporting 3, combined steel pipe concrete column 5, preliminary bracing by bolt or be welded to connect firmly, as the main level direction Force transmission parts of reinforcement system, and the channel height that needs of the transport point of guaranteeing to construct.Combined steel pipe concrete column 5, oblique support 2 together with vertical supporting 3, preliminary bracing structure is divided into 6 across, realize " become greatly across into little across ", improve preliminary bracing stress.
The preliminary bracing end of base plate 1 is provided with the lock foot anchoring stock 9 that stretches into rock mass 11.Patten 4 tops, combined steel pipe concrete column 5 bottoms are enclosed with suspension column protection beam 6, and suspension column protection beam 6 is built and is integrated with patten 4, guarantees the stable of combined steel pipe concrete column 5, and is conducive to a certain extent reinforcement system longitudinal stability.Vertical supporting 3 is fixed with longitudinal link 8 of angle steel type with the intersection of horizontal support 7, the both sides of vertical supporting 3, the below of horizontal support 7, for strengthening being connected between horizontal support 7 and vertical supporting 3, and support component is longitudinally integrally connected, guarantee the monolithic stability of reinforcement system.Patten 4 belows are provided with stretches into anchor pole rock mass 11, that intersect.
Wherein, base plate 1 adopts shaped steel and sprayed mortar composition, patten 4 adopts cast-in-situ concrete or combination shaped steel composition, and combined steel pipe concrete column 5 adopts seamless steel pipe and form concrete composition, and oblique support 2, vertical supporting 3 and horizontal support 7 adopt shaped steel or combination shaped steel.
Cross binding cage construction is longitudinally many row's settings along tunnel; longitudinal pitch is 1.0～5.0m; lateral separation between vertical supporting 3 and combined steel pipe concrete column 5 is 3.0～5.0m; difference in height between base plate 1 and horizontal support 7 is 3.0～5.0m; the width of combined steel pipe concrete column 5 is 0.6～2.0m, and the width of patten 4 is 1.0～2.0m, is highly 0.5～1.0m; suspension column protection beam 6 width, with patten 4, are highly 0.5～1.0m.
Size of the present invention should be of a size of benchmark with constructing tunnel equipment size and cavern excavation generally, and its span length should meet the needs of the normal use of tunnel structure safety and periphery construction of structures.Construction transport channel width, height all should meet the requirement of transport in construction equipment size and hole, and guarantee that passage is smooth-going unobstructed as far as possible; Its width should meet on this basis more reserved certain personnel's traveling and access path.
The present invention adopts shaped steel or combination shaped steel to be assemblied to form, and by bolt or welding, each parts and preliminary bracing is connected firmly, and backing plate pattern should match with preliminary bracing structure; And by patten, suspension column protection beam and longitudinally link support component is longitudinally integrally connected as angle steel, channel-section steel etc., guarantee the monolithic stability of reinforcement system.
The present invention can meet the large consolidation process across shallow buried covered excavation tunnel of single arch of the accidents such as large deformation, landslide, water burst have occurred.After application the present invention, along with the cross dimensions adopting in concrete engineering, form of construction work, geological conditions, equipment size, the differences such as surrounding enviroment and excavation cavern, its dependency structure parameter all can be either large or small according to actual requirement of engineering, more or less, long or short, strong or a little less than, as: base plate size, patten, size and the concrete grade of combined steel pipe concrete column and suspension column protection beam, oblique support, vertical supporting, combined steel pipe concrete column, horizontal support and the longitudinally model of link, material and size, the quantity of braced structures, model, longitudinal pitch and whole height and width etc.
Specific construction process is as follows:
Step 1: build patten 4:
In the large preliminary bracing across shallow buried covered excavation tunnel of single arch, clear up empty slag, smooth location compacting, in the tunnel of bottom surface, tunnel, centerline formwork erection is built patten 4;
Step 2: build base plate 1:
On the bottom surface, tunnel of patten 4 both sides, lay type steel support, welded wire fabric sheet, the preliminary bracing structure of type steel support and both sides and patten 4 are connected firmly, and supporting end sets lock foot anchoring stock 9 in the early stage, builds base plate 1 on type steel support and reinforced mesh; The reserved oblique support 2 of type steel support and vertical supporting 3 junction steel plates and bolt;
Step 3: build combined steel pipe concrete column 5 and suspension column protection beam 6:
On patten 4, set up combined steel pipe, colligation suspension column protection beam 6 reinforcing bars, formwork erection is built combined steel pipe concrete column 5 and suspension column protection beam 6; Reserved horizontal support 7 junction steel plates of combined steel pipe and bolt;
Step 4: set up oblique support 2 and vertical supporting 3:
Set up oblique support 2 and vertical supporting 3, and by between itself and base plate 1, preliminary bracing by bolt, be welded to connect firmly;
Step 5: set up horizontal support 7:
Set up horizontal support 7, and by between itself and oblique support 2, vertical supporting 3, combined steel pipe concrete column 5, preliminary bracing by bolt, be welded to connect firmly;
Step 6: set up longitudinal link 8:
Set up longitudinal link 8, and will between itself and vertical supporting 3, horizontal support 7, be connected firmly.
It is cited that content of the present invention is not limited to embodiment, and the conversion of any equivalence that those of ordinary skill in the art take technical solution of the present invention by reading manual of the present invention, is claim of the present invention and contains.
Claims (8)
1. single arch, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Described reinforcement system is for single arch is greatly across door shape and the fan-shaped support framework structure combining in shallow buried covered excavation Tunnel (10), include the combined steel pipe concrete column (5) of tunnel centerline, the patten (4) that bottom surface, tunnel arranges is fixed in combined steel pipe concrete column (5) bottom, and preliminary bracing (10) is fixed on top;
On the bottom surface, tunnel of patten (4) both sides, be provided with base plate (1), the upper same point of base plate (1) is fixed with vertical supporting (3) and oblique support (2), the opposite side of oblique support (2) tendency combined steel pipe concrete column (5), preliminary bracing (10) is all fixed on the top of vertical supporting (3) and oblique support (2);
Base plate (1) top is provided with horizontal support (7), and preliminary bracing (10) is fixed in horizontal support (7) one end, and the other end is fixed on combined steel pipe concrete column (5), and is connected firmly with vertical supporting (3).
2. single arch according to claim 1, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
The preliminary bracing end of described base plate (1) is provided with the lock foot anchoring stock (9) that stretches into rock mass (11).
3. single arch according to claim 2, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Described patten (4) top, combined steel pipe concrete column (5) bottom are enclosed with suspension column protection beam (6), and suspension column protection beam (6) is built and is integrated with patten (4).
4. single arch according to claim 3, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Described vertical supporting (3) is fixed with longitudinal link (8) of angle steel type with the intersection of horizontal support (7), the both sides of vertical supporting (3), the below of horizontal support (7).
5. single arch according to claim 4, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Described patten (4) below is provided with stretches into anchor pole rock mass (11), that intersect.
6. single arch according to claim 5, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Described base plate (1) adopts shaped steel and sprayed mortar composition;
Described patten (4) adopts cast-in-situ concrete or combination shaped steel composition;
Described combined steel pipe concrete column (5) adopts seamless steel pipe and form concrete composition;
Described oblique support (2), vertical supporting (3) and horizontal support (7) adopt shaped steel or combination shaped steel.
7. single arch according to claim 6, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Described cross binding cage construction is longitudinally many row's settings along tunnel, and longitudinal pitch is 1.0～5.0m;
Lateral separation between described vertical supporting (3) and combined steel pipe concrete column (5) is 3.0～5.0m;
Difference in height between described base plate (1) and horizontal support (7) is 3.0～5.0m;
The width of described combined steel pipe concrete column (5) is 0.6～2.0m
The width of described patten (4) is 1.0～2.0m, is highly 0.5～1.0m;
The described suspension column protection same patten of beam (6) width (4) is highly 0.5～1.0m.
8. single arch, greatly across the construction method of shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Realized by following steps:
Step 1: build patten (4):
In the large preliminary bracing across shallow buried covered excavation tunnel of single arch, clear up empty slag, smooth location compacting, build patten (4) at the tunnel of bottom surface, tunnel centerline formwork erection;
Step 2: build base plate (1):
On the bottom surface, tunnel of patten (4) both sides, lay type steel support, welded wire fabric sheet, the preliminary bracing structure of type steel support and both sides and patten (4) are connected firmly, and supporting end sets lock foot anchoring stock (9) in the early stage, builds base plate (1) on type steel support and reinforced mesh; The reserved oblique support (2) of type steel support and vertical supporting (3) junction steel plate and bolt;
Step 3: build combined steel pipe concrete column (5) and suspension column protection beam (6):
On patten (4), set up combined steel pipe, colligation suspension column protection beam (6) reinforcing bar, formwork erection is built combined steel pipe concrete column (5) and suspension column protection beam (6); Combined steel pipe is reserved horizontal support (7) junction steel plate and bolt;
Step 4: set up oblique support (2) and vertical supporting (3):
Set up oblique support (2) and vertical supporting (3), and by between itself and base plate (1), preliminary bracing by bolt, be welded to connect firmly;
Step 5: set up horizontal support (7):
Set up horizontal support (7), and by between itself and oblique support (2), vertical supporting (3), combined steel pipe concrete column (5), preliminary bracing by bolt, be welded to connect firmly;
Step 6: set up longitudinal link (8):
Set up longitudinal link (8), and itself and vertical supporting (3), horizontal support are connected firmly between (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410173358.4A CN103924981B (en) | 2014-04-28 | 2014-04-28 | Single-arch large span shallow-depth-excavation tunnel reinforcement system and construction method thereof |
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| CN201410173358.4A CN103924981B (en) | 2014-04-28 | 2014-04-28 | Single-arch large span shallow-depth-excavation tunnel reinforcement system and construction method thereof |
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| CN103924981A true CN103924981A (en) | 2014-07-16 |
| CN103924981B CN103924981B (en) | 2016-04-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350545A (en) * | 2015-11-24 | 2016-02-24 | 郑州大学 | Self-balancing supporting structure of tool type arch support of subway foundation pit end well |
| CN107023308A (en) * | 2017-05-27 | 2017-08-08 | 中国水利水电第四工程局有限公司 | A kind of hard rock large cross-section tunnel construction supporting structure and construction method |
| CN109113750A (en) * | 2018-10-30 | 2019-01-01 | 中铁第勘察设计院集团有限公司 | Shield end reinforces the emergency set and its construction method of failure |
| CN111996899A (en) * | 2020-08-04 | 2020-11-27 | 上海市城市建设设计研究总院（集团）有限公司 | Method for building large-span channel in artificial landscape mountain |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102155232A (en) * | 2011-04-02 | 2011-08-17 | 中铁二院工程集团有限责任公司 | Construction method of large-span asymmetrical double-arch railway tunnel under terrain bias pressure condition |
| CN203822326U (en) * | 2014-04-28 | 2014-09-10 | 中铁第一勘察设计院集团有限公司 | Reinforcing system for single-arch and large-span type shallowly buried and darkly excavated tunnel |
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2014
- 2014-04-28 CN CN201410173358.4A patent/CN103924981B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102155232A (en) * | 2011-04-02 | 2011-08-17 | 中铁二院工程集团有限责任公司 | Construction method of large-span asymmetrical double-arch railway tunnel under terrain bias pressure condition |
| CN203822326U (en) * | 2014-04-28 | 2014-09-10 | 中铁第一勘察设计院集团有限公司 | Reinforcing system for single-arch and large-span type shallowly buried and darkly excavated tunnel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350545A (en) * | 2015-11-24 | 2016-02-24 | 郑州大学 | Self-balancing supporting structure of tool type arch support of subway foundation pit end well |
| CN105350545B (en) * | 2015-11-24 | 2017-08-04 | 郑州大学 | A kind of subway foundation pit end well tool-type arch support self-balancing supporting construction |
| CN107023308A (en) * | 2017-05-27 | 2017-08-08 | 中国水利水电第四工程局有限公司 | A kind of hard rock large cross-section tunnel construction supporting structure and construction method |
| CN109113750A (en) * | 2018-10-30 | 2019-01-01 | 中铁第勘察设计院集团有限公司 | Shield end reinforces the emergency set and its construction method of failure |
| CN109113750B (en) * | 2018-10-30 | 2023-08-29 | 中铁第一勘察设计院集团有限公司 | Emergency device for reinforcing failure of shield end and construction method thereof |
| CN111996899A (en) * | 2020-08-04 | 2020-11-27 | 上海市城市建设设计研究总院（集团）有限公司 | Method for building large-span channel in artificial landscape mountain |
| CN111996899B (en) * | 2020-08-04 | 2021-10-22 | 上海市城市建设设计研究总院（集团）有限公司 | Method for building large-span channel in artificial landscape mountain |
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|---|---|
| CN103924981B (en) | 2016-04-13 |
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