CN203822326U - Reinforcing system for single-arch and large-span type shallowly buried and darkly excavated tunnel - Google Patents

Reinforcing system for single-arch and large-span type shallowly buried and darkly excavated tunnel Download PDF

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Publication number
CN203822326U
CN203822326U CN201420210320.5U CN201420210320U CN203822326U CN 203822326 U CN203822326 U CN 203822326U CN 201420210320 U CN201420210320 U CN 201420210320U CN 203822326 U CN203822326 U CN 203822326U
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CN
China
Prior art keywords
steel pipe
concrete column
pipe concrete
tunnel
combined steel
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Withdrawn - After Issue
Application number
CN201420210320.5U
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Chinese (zh)
Inventor
曹伟
王俊
王立新
翁木生
李储军
张利斌
戴志仁
王博
王天明
毛念华
张毓斌
王鹏
张海
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China Railway First Survey and Design Institute Group Ltd
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China Railway First Survey and Design Institute Group Ltd
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Priority to CN201420210320.5U priority Critical patent/CN203822326U/en
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Publication of CN203822326U publication Critical patent/CN203822326U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model relates to a reinforcing system for a single-arch and large-span type shallowly buried and darkly excavated tunnel. In the prior art, during construction, single-arch and large-span type shallowly buried and darkly excavated tunnels must be reinforced during construction due to the existence of deformation, collapse and other risks. According to the technical scheme of the utility model, the utility model provides the internal supporting framework structure of a primary support for a tunnel, which comprises a combined steel pipe concrete column at the center line of the tunnel. The bottom end of the combined steel pipe concrete column is fixed onto a column foundation, and the top end of the combined steel pipe concrete column is fixed onto the primary support. The two sides of the column foundation are provided with a bottom plate. A vertical strut is fixedly arranged on the bottom plate. One ends of the vertical strut and an inclined strut are fixed onto the primary support. One end of a horizontal strut is fixed onto the primary support, and the other end of the horizontal strut is fixed onto combined steel pipe concrete column and is firmly connected with the vertical strut at the same time. When the large deformation, collapse, water-bursting or other accident of a single-arch and large-span type shallowly buried and darkly excavated tunnel happens or is about to happen, the single-arch and large-span type shallowly buried and darkly excavated tunnel is reinforced by means of the above system. Taking advantages of the combination of a door-shaped support and fan-shaped support, a large span is converted into a small span. Meanwhile, the deformation of tunnels caused by construction can be effectively controlled.

Description

A kind of single arch is greatly across shallow buried covered excavation tunnel reinforcement system
Technical field
the utility model belongs to tunnel and underground construction technical field, is specifically related to a kind of single arch greatly across shallow buried covered excavation tunnel reinforcement system.
Background technology
Along with subway construction is fast-developing, 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 purpose of this utility model is to provide a kind of single arch greatly across shallow buried covered excavation tunnel reinforcement system, can fast, effectively control the surrouding rock deformation that construction causes.
The technical scheme that the utility model adopts is:
Single arch, greatly across a 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, the combined steel pipe concrete column that includes 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 to form;
Described patten adopts cast-in-situ concrete or combination shaped steel to form;
Described combined steel pipe concrete column adopts seamless steel pipe and form concrete to form;
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.
The utlity model has following advantage:
For there is or be about to occur the large consolidation process across shallow buried covered excavation tunnel of single arch of the accidents such as large deformation, landslide, water burst in the utility model.This structural shape is simple and clear, reasonable stress, given full play to the self-supporting ability of country rock, according to single, encircle greatly across shallow buried covered excavation tunnel structure pattern and section loading characteristic, the ingenious mechanics advantage of shaped steel or Combined steel structure and the inner space of section of utilizing, advantage in conjunction with the support of door shape and fan-shaped support, realized " become greatly across into little across ", controlled 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.
Accompanying drawing explanation
Fig. 1 is the utility model structure section figure.
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.
The specific embodiment
Below in conjunction with the specific embodiment, the utility model is described in detail.
A kind of single arch that the utility model relates to is 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 and the intersection of horizontal support 7 are, the below of the both sides of vertical supporting 3, horizontal support 7 is fixed with longitudinal link 8 of angle steel type, 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 to form, patten 4 adopts cast-in-situ concrete or combination shaped steel to form, and combined steel pipe concrete column 5 adopts seamless steel pipe and form concrete to form, 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 utility model 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 transportation 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 utility model 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 utility model 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 utility model, 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 utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model manual, is claim of the present utility model and contains.

Claims (7)

1. single arch, greatly across a 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), the combined steel pipe concrete column (5) that includes 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. a kind of 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. a kind of 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. a kind of single arch according to claim 3, greatly across shallow buried covered excavation tunnel reinforcement system, is characterized in that:
Described vertical supporting (3) and the intersection of horizontal support (7) are, the below of the both sides of vertical supporting (3), horizontal support (7) is fixed with longitudinal link (8) of angle steel type.
5. a kind of 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. a kind of 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 to form;
Described patten (4) adopts cast-in-situ concrete or combination shaped steel to form;
Described combined steel pipe concrete column (5) adopts seamless steel pipe and form concrete to form;
Described oblique support (2), vertical supporting (3) and horizontal support (7) adopt shaped steel or combination shaped steel.
7. a kind of 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.
CN201420210320.5U 2014-04-28 2014-04-28 Reinforcing system for single-arch and large-span type shallowly buried and darkly excavated tunnel Withdrawn - After Issue CN203822326U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103924981A (en) * 2014-04-28 2014-07-16 中铁第一勘察设计院集团有限公司 Single-arch large-span shallow-buried excavation tunnel reinforcing system and construction method thereof
CN105736002A (en) * 2016-04-30 2016-07-06 北京城乡建设集团有限责任公司 Method for excavating middle tunnel in large-span subway ventilation duct by using combined supporting structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103924981A (en) * 2014-04-28 2014-07-16 中铁第一勘察设计院集团有限公司 Single-arch large-span shallow-buried excavation tunnel reinforcing system and construction method thereof
CN103924981B (en) * 2014-04-28 2016-04-13 中铁第一勘察设计院集团有限公司 Single-arch large span shallow-depth-excavation tunnel reinforcement system and construction method thereof
CN105736002A (en) * 2016-04-30 2016-07-06 北京城乡建设集团有限责任公司 Method for excavating middle tunnel in large-span subway ventilation duct by using combined supporting structure

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20140910

Effective date of abandoning: 20160413

C25 Abandonment of patent right or utility model to avoid double patenting