CN208330388U - A kind of headwall formula Tunnel Portal Structures setting embedding anchor pole - Google Patents
A kind of headwall formula Tunnel Portal Structures setting embedding anchor pole Download PDFInfo
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- CN208330388U CN208330388U CN201820633046.0U CN201820633046U CN208330388U CN 208330388 U CN208330388 U CN 208330388U CN 201820633046 U CN201820633046 U CN 201820633046U CN 208330388 U CN208330388 U CN 208330388U
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Abstract
The utility model relates to a kind of headwall formula Tunnel Portal Structures for setting embedding anchor pole, belong to Tunnel Engineering technical field.Connection anchor pole is arranged in embedding position of tunnel portal headwall and side slope in the utility model, headwall is taken root in the Rock And Soil for being placed in side slope, affixed fulcrum is provided for the upper cantilever arm section two sides of headwall, to be effectively improved the stress of portal wall, reduce its internal force, improves its stability and safety；Compared with traditional heavy, thick and solid gravity type, earth-retaining type portal wall, the utility model structural thickness is relatively thin, is light-duty, is a kind of not only safety but also economic structure.Compared to traditional gravity type earth-retaining type portal headwall, the dosage of concrete can be greatly decreased in the utility model structure, and can reduce the excavated volume for facing upward slope and headwall substrate to a certain degree, and the construction time can be reduced cost about 35%, have very strong practicability and dissemination.
Description
Technical field
The utility model belongs to Tunnel Engineering technical field, and in particular to a kind of headwall formula tunnel portal for setting embedding anchor pole
Structure.
Background technique
With the development of economic society, the Tunnel Passing mountain ridge is used during highway construction more and more.Vcehicular tunnel
In design, process of construction, a kind of common operating condition is that the longer paragraph in hole is located at gentle location, and buried depth is little, belongs to shallow embedding even
An ultra shallow is buried, but as Tunnel Engineering but also with cavitation condition, at this point, being to implement tunnel or implement Road-Cut with High Slope, is worth ratio
Compared with；Position is arranged by geological conditions, construction level, economy into hole position, open cut tunnel section setting length and portal in the dark hole in tunnel
Than multifactor influences such as choosings；On the other hand, when tunnel is located at aforementioned orographic condition, have cavitation condition but tunneling but deposit
In larger difficulty of construction or there may be the risk of collapse and cave-in, engineering practices tend to implement open cut, pour open cut tunnel tunnel；Again
Further, under aforementioned orographic condition, the open cut tunnel tunnel of the longer paragraph of open cut after-pouring excavates, compared with protection implementation cutting with direct
It is more likely to implement cutting again compared with, engineering practices, in this case, with tunnel face intersection location hole to face upward slope higher for cutting.
When tunnel portal excavate it is higher, connect with cutting when, tunnel portal generally selects headwall formula, but work as headwall wall compared with
Height, close to when being even higher by original ground, headwall wall structure will have higher cantilever segment；To ensure wall stabilization and wall
Structure safety, conventional process mode are to use heavy, thick and solid Gravity Retaining Wall, and wall is higher, and wall is thicker.
It can be directed to the operating condition of above-mentioned high cantilever headwall, using a kind of not only safety of light and thin type but also economic tunnel portal
Structure, being one is worth thinking, problem to be solved.
Utility model content
To solve the above problems, the utility model proposes a kind of novel structure, in the embedding of tunnel portal headwall and side slope
Platform position setting connection anchor pole, headwall is taken root in the Rock And Soil for being placed in side slope, is provided and is consolidated for the upper cantilever arm section two sides of headwall
Fulcrum is connect, to be effectively improved the stress of portal wall, reduces its internal force, improves its stability and safety；With traditional heaviness, thickness
Real gravity type, earth-retaining type portal wall are compared, the utility model portal structure thinner thickness, are light-duty, be a kind of not only safety but also
Economic structure.Compared to traditional gravity type earth-retaining type portal headwall, concrete can be greatly decreased in the utility model structure
Dosage, and the excavated volume for facing upward slope and headwall substrate can be reduced to a certain degree, the construction time can be reduced cost about 35%；In addition, compared to
Traditional gravity type earth-retaining type portal headwall, the utility model structure wall thickness are substantially thinned, its placement layer by layer of suitable control
Highly, then the influence of negligible casting of concrete in mass, namely construction are also more convenient.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of headwall formula Tunnel Portal Structures setting embedding anchor pole, including portal headwall, the portal headwall and tunnel serve as a contrast
Block is fixedly linked；
The embedded structure that portal headwall two sides respectively pass through an overhand is embedded into the roadbed side slope of hole；Described is embedding
Plane where entering the pedal leading edge of the steps at different levels of structure is identical as the ratio of slope of the slope surface of hole roadbed side slope；
It further include more connection anchor poles, connection anchor pole is arranged perpendicular to the slope surface of hole roadbed side slope；Connect anchor pole one end
It is fixed in portal headwall, and after embedded structure, the other end is fixed in the roadbed side slope of hole；Connection anchor pole is located at portal
Length in headwall is not less than 2m, and 5m is not less than in the Rock And Soil of hole roadbed side slope；
Connection anchor pole is started setting up from the position 3m below tunnel-liner top, along portal headwall wall to portal headwall top direction
Double laying；Every grade of step setting that connected anchor pole passes through is no less than 3 groups of connection anchor poles.
It is further preferred that the headwall bottom of foundation of portal headwall is set as tilting, toe of wall is called in person higher than wall, and ratio of slope is
1:10。
It is further preferred that the portal headwall is fixedly linked with tunnel-liner by connecting reinforcing bar.
It is further preferred that the wall of portal headwall is divided into wall at the top of lining cutting avris wall and lining cutting；Lining cutting avris
Wall is inclined retaining wall, and facing upward ramp rate is 1:0.1, wall thickness 1.5m；Wall maximum height is 6m at the top of lining cutting, is rectilinear
Barricade, metope ratio of slope are 1:0.1, and wall back is vertical.
It is further preferred that the thickness of wall body of wall is being 1.5m with the position of tunnel-liner contact point at the top of lining cutting,
It is gradually thinned upwards.
It is further preferred that portal headwall is reinforced concrete structure.
It is further preferred that connection anchor pole uses grouting rock bolt under the conditions of rock slope；Under the conditions of soil-slope, even
Anchor pole is connect using slip casting steel floral tube.
It is further preferred that the shank diameter of grouting rock bolt is not less than 28mm.
It is further preferred that the pipe outside diameter of slip casting steel floral tube is not less than 42mm.
It is further preferred that plane and hole roadbed where the pedal leading edge of the steps at different levels of the embedded structure
The slope surface distance of side slope is 1m.
The embedded structure of overhand may be simply referred to as embedding in the utility model；So connection anchor pole can also become embedding company
Connect anchor pole, referred to as embedding anchor pole.
The utility model compared with prior art, it has the advantage that:
A kind of headwall formula Tunnel Portal Structures setting embedding anchor pole provided by the utility model are suitable for the gentle location of landform
Cutting and tunnel intersection location.
When the longer paragraph in tunnel face is when burying paragraph positioned at shallow embedding, an ultra shallow, tunnel is changed to cutting (its by engineering practices habit
Slope excavating, protection are two), tunnel face is Gao Yangpo at this time, and tunnel portal uses headwall formula and headwall is higher.Traditional
Portal headwall, need to be by very thick (3m or more) of wall body structure setting to guarantee that portal structure is stablized when wall is higher；Tradition
Portal wall is less economical, portal wall must be thought of as to mass concrete construction, complex process in terms of construction technology, and face upward slope
It excavates and wall base plinth excavated volume is also very big.
The shortcomings that overcome traditional portal headwall, the utility model proposes a kind of headwall formula tunnel portals for setting embedding anchor pole
Structure is arranged connection anchor pole in embedding position of headwall and side slope, headwall is taken root in the Rock And Soil for being placed in side slope, is headwall
Upper cantilever arm section two sides provide affixed fulcrum and reduce its internal force to be effectively improved the stress of portal wall, improve its stability and peace
Quan Xing；
Compared with traditional heavy, thick and solid gravity type, earth-retaining type portal wall, the utility model portal structure thickness compared with
It is thin, to be light-duty, be a kind of structure of not only safety economy again.Compared to traditional gravity type earth-retaining type portal headwall, this is practical new
The dosage of concrete can be greatly decreased in type structure, and can reduce the excavated volume for facing upward slope and headwall substrate, construction time energy to a certain degree
Cost about 35% is reduced, there is very strong practicability and dissemination；
In addition, the utility model structure wall thickness is substantially thinned compared to traditional gravity type earth-retaining type portal headwall,
The influence of casting of concrete in mass then can be ignored in its placement layer by layer height of suitable control, and it is more convenient to construct.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of headwall formula Tunnel Portal Structures schematic view of the front view for setting embedding anchor pole of the utility model；
Fig. 2 is a kind of headwall formula Tunnel Portal Structures schematic cross-sectional view for setting embedding anchor pole of the utility model；
Fig. 3 is that a kind of headwall formula Tunnel Portal Structures headwall for setting embedding anchor pole of the utility model and embedding anchor pole composition are big
Master drawing；
Fig. 4 is a kind of headwall formula Tunnel Portal Structures headwall side structure schematic view for setting embedding anchor pole of the utility model；
The distribution situation of side view signal connection anchor pole；
Fig. 5 is a kind of another side view structure signal of headwall formula Tunnel Portal Structures headwall for setting embedding anchor pole of the utility model
Figure；The piecemeal situation of side view signal portal headwall；
Wherein: 1, hole ground cross-sectional line；2, tunnel longitudinal midline ground line；3, hole roadbed side slope；4, tunnel serves as a contrast
It builds；5, portal headwall；5a, headwall basis；5b, lining cutting avris wall；Wall at the top of 5c, lining cutting；6, anchor pole is connected；7, steel is connected
Muscle；8, embedded structure；9, roadbed side slope line；10, road surface line.
Specific embodiment
The utility model is described in further detail below with reference to embodiment.
It will be understood to those of skill in the art that the following example is merely to illustrate the utility model, and should not be regarded as limiting
The scope of the utility model.Particular technique, connection relationship or condition person are not specified in embodiment, according to the literature in the art institute
Technology, connection relationship or the condition of description are carried out according to product description.Production firm person is not specified in material therefor, is
The conventional products that can be obtained by purchase.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.Term
The orientation or state relation of the instructions such as "inner", "upper", "lower" are orientation based on the figure or state relation, merely to just
In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention is understood as the case may be.
As shown in Figs. 1-5, a kind of headwall formula Tunnel Portal Structures setting embedding anchor pole, including portal headwall 5, feature exists
In the portal headwall 5 is fixedly linked with tunnel-liner 4；
The embedded structure 8 that 5 two sides of portal headwall respectively pass through an overhand is embedded into hole roadbed side slope 3；It is i.e. embedding
Entering structure 8 with portal headwall 5, hole roadbed side slope 3 is to be fixedly linked；
The slope surface distance of plane and hole roadbed side slope 3 where the pedal leading edge of the steps at different levels of the embedded structure 8
Preferably 1m, and ratio of slope is identical, i.e., two faces are parallel；
It further include more connection anchor poles 6, connection anchor pole 6 is arranged perpendicular to the slope surface of hole roadbed side slope 3；Connect anchor pole 6
One end is fixed in portal headwall 5, and after embedded structure 8, the other end is fixed in hole roadbed side slope 3；Connect anchor pole 6
Length in portal headwall 5 is not less than 2m, and 5m is not less than in the Rock And Soil of hole roadbed side slope 3；
Connection anchor pole 6 pushes up the following position 3m from tunnel-liner 4 and starts setting up, and pushes up along 5 wall of portal headwall to portal headwall 5
The double laying in direction；It is connected every grade of step setting that anchor pole 6 passes through and is no less than 3 groups of connection anchor poles 6.
It is preferred that the headwall basis bottom surface 5a of portal headwall 5 is set as tilting, toe of wall is called in person higher than wall, and ratio of slope (high: wide) is 1:
10。
It is preferred that the portal headwall 5 is fixedly linked with tunnel-liner 4 by connecting reinforcing bar 7.
It is preferred that the wall of portal headwall 5 is divided into wall 5c at the top of lining cutting avris wall 5b and lining cutting；Lining cutting avris wall 5b
For inclined retaining wall, facing upward ramp rate (high: wide) is 1:0.1, wall thickness 1.5m；Wall 5c maximum height is 6m at the top of lining cutting, is
Rectilinear barricade, metope ratio of slope (high: wide) are 1:0.1, and wall back is vertical.
It is preferred that the thickness of wall body of wall 5c is being 1.5m with the position of 4 contact point of tunnel-liner at the top of lining cutting, upwards gradually
It is thinned.The utility model is not specifically limited for thinned in the case of, according to the art conventional arrangement.
It is preferred that portal headwall 5 is reinforced concrete structure, wall is regarded as panel, grid structure can be configured inside and outside
Make reinforcing bar.
It is preferred that connection anchor pole 6 uses grouting rock bolt, and the shank diameter of grouting rock bolt is not less than under the conditions of rock slope
28mm；Under the conditions of soil-slope, connection anchor pole 6 uses slip casting steel floral tube, and the pipe outside diameter of slip casting steel floral tube is not less than 42mm.
Portal headwall 5 pours again after the completion of tunnel-liner 4 pours in the utility model, and need to be pre- in tunnel-liner 4
Bury connection reinforcing bar 7.
Pouring for 5 concrete of portal headwall need to carry out after the completion of following process: tunnel-liner 4 pour completion and it is pre-buried
Reinforcing bar 7 is connected, excavates and buried embedding connection anchor pole 6 where embedded structure 8,5 wall steel bar of portal headwall, which is laid, to be completed,
Template is in place.
5 concreting of portal headwall is completed, reaches design strength requirement rear collapsible die, backfills after then carrying out wall,
Tunnel portal construction is completed.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of headwall formula Tunnel Portal Structures for setting embedding anchor pole, including portal headwall (5), which is characterized in that the portal
Headwall (5) is fixedly linked with tunnel-liner (4)；
The embedded structure (8) that portal headwall (5) two sides respectively pass through an overhand is embedded into hole roadbed side slope (3)；Institute
Plane where the pedal leading edge of the steps at different levels for the embedded structure (8) stated is identical as the ratio of slope of slope surface of hole roadbed side slope (3)；
It further include more connection anchor poles (6), connection anchor pole (6) is arranged perpendicular to the slope surface of hole roadbed side slope (3)；Connect anchor pole
(6) one end is fixed in portal headwall (5), and after embedded structure (8), the other end is fixed in hole roadbed side slope (3)；
Connection anchor pole (6) is located at the length in portal headwall (5) not less than 2m, is located at not small in the Rock And Soil of hole roadbed side slope (3)
In 5m；
Connection anchor pole (6) is pushed up the following position 3m from tunnel-liner (4) and is started setting up, along portal headwall (5) wall to portal headwall
(5) the double laying in direction is pushed up；It is connected every grade of step setting that anchor pole (6) pass through and is no less than 3 groups of connection anchor poles (6).
2. the headwall formula Tunnel Portal Structures according to claim 1 for setting embedding anchor pole, which is characterized in that portal headwall
(5) the basic bottom surface (5a) of headwall is set as tilting, and toe of wall is called in person higher than wall, ratio of slope 1:10.
3. the headwall formula Tunnel Portal Structures according to claim 1 for setting embedding anchor pole, which is characterized in that the portal end
Wall (5) is fixedly linked with tunnel-liner (4) by connecting reinforcing bar (7).
4. the headwall formula Tunnel Portal Structures according to claim 1 for setting embedding anchor pole, which is characterized in that portal headwall
(5) wall is divided into wall (5c) at the top of lining cutting avris wall (5b) and lining cutting；Lining cutting avris wall (5b) is inclined retaining wall,
Facing upward ramp rate is 1:0.1, wall thickness 1.5m；Wall (5c) maximum height is 6m at the top of lining cutting, is rectilinear barricade, metope ratio of slope
For 1:0.1, wall back is vertical.
5. the headwall formula Tunnel Portal Structures according to claim 4 for setting embedding anchor pole, which is characterized in that wall at the top of lining cutting
The thickness of wall body of body (5c) is being 1.5m with the position of tunnel-liner (4) contact point, is gradually thinned upwards.
6. the headwall formula Tunnel Portal Structures according to claim 1 for setting embedding anchor pole, which is characterized in that portal headwall
It (5) is reinforced concrete structure.
7. the headwall formula Tunnel Portal Structures according to claim 1 for setting embedding anchor pole, which is characterized in that rock slope item
Under part, connection anchor pole (6) uses grouting rock bolt；Under the conditions of soil-slope, connection anchor pole (6) uses slip casting steel floral tube.
8. the headwall formula Tunnel Portal Structures according to claim 7 for setting embedding anchor pole, which is characterized in that grouting rock bolt
Shank diameter is not less than 28mm.
9. the headwall formula Tunnel Portal Structures according to claim 7 for setting embedding anchor pole, which is characterized in that slip casting steel floral tube
Pipe outside diameter be not less than 42mm.
10. the headwall formula Tunnel Portal Structures according to claim 1 for setting embedding anchor pole, which is characterized in that described is embedding
Plane where entering the pedal leading edge of the steps at different levels of structure (8) and the slope surface of hole roadbed side slope (3) distance are 1m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820633046.0U CN208330388U (en) | 2018-04-28 | 2018-04-28 | A kind of headwall formula Tunnel Portal Structures setting embedding anchor pole |
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|---|---|---|---|
| CN201820633046.0U CN208330388U (en) | 2018-04-28 | 2018-04-28 | A kind of headwall formula Tunnel Portal Structures setting embedding anchor pole |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899084A (en) * | 2019-02-21 | 2019-06-18 | 中交一公局公路勘察设计院有限公司 | A kind of anchor draws the light-duty tunnel portal of armored concrete and its construction method |
| CN109931075A (en) * | 2019-04-03 | 2019-06-25 | 长江勘测规划设计研究有限责任公司 | The hole arragement construction in steep inclined shaft tunnel |
| CN113818485A (en) * | 2021-09-09 | 2021-12-21 | 中建五局土木工程有限公司 | Reverse construction method for open-cut arched tunnel in sandy gravel stratum near river |
-
2018
- 2018-04-28 CN CN201820633046.0U patent/CN208330388U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899084A (en) * | 2019-02-21 | 2019-06-18 | 中交一公局公路勘察设计院有限公司 | A kind of anchor draws the light-duty tunnel portal of armored concrete and its construction method |
| CN109931075A (en) * | 2019-04-03 | 2019-06-25 | 长江勘测规划设计研究有限责任公司 | The hole arragement construction in steep inclined shaft tunnel |
| CN109931075B (en) * | 2019-04-03 | 2024-04-12 | 长江勘测规划设计研究有限责任公司 | Hole arrangement structure of steep slope inclined shaft tunnel |
| CN113818485A (en) * | 2021-09-09 | 2021-12-21 | 中建五局土木工程有限公司 | Reverse construction method for open-cut arched tunnel in sandy gravel stratum near river |
| CN113818485B (en) * | 2021-09-09 | 2023-10-13 | 中建五局土木工程有限公司 | Reverse-acting quick and safe construction method for open cut arch tunnel in river facing sandy pebble stratum |
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Address after: 650051 Yunnan province Kunming City Road No. 9 Xiang Shi Tuo Patentee after: Yunnan Transportation Planning & Design Research Institute Co., Ltd. Address before: 650051 Yunnan province Kunming City Road No. 9 Xiang Shi Tuo Patentee before: Broadvision Engineering Consultants |