CN204283438U - Portal supporting and protection structure - Google Patents
Portal supporting and protection structure Download PDFInfo
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- CN204283438U CN204283438U CN201420740369.1U CN201420740369U CN204283438U CN 204283438 U CN204283438 U CN 204283438U CN 201420740369 U CN201420740369 U CN 201420740369U CN 204283438 U CN204283438 U CN 204283438U
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Abstract
The utility model provides a kind of portal supporting and protection structure, comprise portal body, portal body hole face-upward slope is provided with skeleton bank protection face, the high side face-upward slope being positioned at portal body side is provided with multiple single load bearing stake along circuit longitudinal separation, the stressed stake of adjacent one-way is connected by wall between stake, between stake, wall is connected with portal body by connection wall, and the light and shade boundary mileage place that this height of portal side faces upward slope is provided with two-way forced pile.The utility model provides a kind of portal supporting and protection structure, ensures that the stratum of construction period is stablized, and also effectively prevent the environmental disruption that large brush slope is caused, and more lower step hole excavation creates good pre support system.
Description
Technical field
The utility model belongs to railway tunnel technical field, is specifically related to a kind of portal supporting and protection structure.
Background technology
Along with building on a large scale of mountain railway tunnel, portal form much have employed the brim of a hat inclined cutout, and this kind of form is succinctly elegant in appearance, easy construction, structural safety, applied widely, but when running into special geologic condition, the serious bias voltage in such as hole, tunnel center line and domatic oblique, then hole security and stability is on the hazard, according to traditional approach brush slope in the past, then difficulty of construction is large, welding, schedule delays.
Utility model content
For above-mentioned technical problem, the utility model provides a kind of portal supporting and protection structure, ensures that the stratum of construction period is stablized, and also effectively prevent the environmental disruption that large brush slope is caused, and more lower step hole excavation creates good pre support system.
The utility model provides a kind of portal supporting and protection structure, comprise portal body, portal body hole face-upward slope is provided with skeleton bank protection face, the high side face-upward slope being positioned at portal body side is provided with multiple single load bearing stake along circuit longitudinal separation, the stressed stake of adjacent one-way is connected by wall between stake, between stake, wall is connected with portal body by connection wall, and the light and shade boundary mileage place that this height of portal side faces upward slope is provided with two-way forced pile.
Described single load bearing stake comprises the first anchor pile and the second anchor pile, first anchor pile is positioned at high side face-upward slope one end near portal body hole, second anchor pile is positioned at high side face-upward slope one end away from portal body hole, and the second anchor pile is less than the vertical distance of the first anchor pile to portal body to the vertical distance of portal body.
Described first anchor pile is connected with roadbed antislide pile by wall between stake.
The height that the stake top of described single load bearing stake exposes to the skeleton bank protection face of portal body is not more than 1m, and between the stake top of single load bearing stake and stake, the top of wall is not all higher than portal main body.
The height that described portal body exposes to skeleton bank protection face is not less than 1m.
Described connection wall and portal body junction, between single load bearing stake and stake wall junction, between connection wall and stake, the junction of wall is provided with plug wall.
Between described stake, wall and connection wall are barricade.
Described first anchor pile and the second anchor pile are square hole digging pile, and stake cross section is 2m*2m ~ 3m*3m.
Described portal body is cap brim bias-cutting type hole-door.
The utility model adopts cap brim bias-cutting type hole-door, uses, can ensure that portal structure safe ready is constructed at the serious location of bias voltage or tunnel center line and domatic oblique (lateral slope of ground is steeper) inclination longitudinal gradient location.Wall between stake is provided with between first anchor pile of the present utility model and the second anchor pile, gear mechanical property is propped up on the face-upward slope slope achieving stake and wall, both organically combine and both ensure that the stratum of construction period was stablized and structure of the window safety, effectively prevent the environmental disruption that large brush slope is caused, more lower step hole excavation creates good pre support system protection simultaneously.Between stake of the present utility model, wall is connected with portal body the resistance to overturning strengthening safeguard structure by connection wall, is combined by the permanent structure of piling wall structure with portal body, defines firm hole supporting and protection structure.The utility model is laid with two-way forced pile near light and shade boundary mileage, stablizes high face-upward slope, ensure structure of the window safety further for auxiliary.Meanwhile, the second anchor pile of the present utility model closer in portal body compared with the first anchor pile, effectively reduces the excavation height of face-upward slope, further enhances the safety of construction.
Accompanying drawing explanation
Fig. 1 is the utility model top view
Fig. 2 is the utility model lateral view
Fig. 3 is the utility model partial schematic diagram a
Fig. 4 is the utility model partial schematic diagram b
Wherein, 1-portal body, 2-skeleton bank protection face, 3-height side face-upward slope, 4-two-way forced pile, 41-first anchor pile, 42-second anchor pile, wall between 5-stake, 6-connection wall, 7-two-way forced pile, 8-roadbed antislide pile, 9-plug wall.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the utility model is described in further detail:
The utility model provides a kind of portal supporting and protection structure, comprise portal body 1, portal body 1 hole face-upward slope is provided with skeleton bank protection face 2, the high side face-upward slope 3 being positioned at portal body 1 side is provided with multiple single load bearing stake 4 along circuit longitudinal separation, the stressed stake of adjacent one-way is connected by wall between stake 5, between stake, wall 5 is connected with portal body by connection wall 6, and the light and shade boundary mileage place that this height of portal side faces upward slope 3 is provided with two-way forced pile 7.Multiple single load bearing stake 4 is connected to form pile plate wall structure by wall between stake 5, as the comprehensive support system of entrance construction, both ensure that the stratum of construction period was stablized, and also effectively prevent the environmental disruption that large brush slope is caused, more lower step hole excavation creates good pre support system.Between stake, wall 5 realizes being combined with the permanent structure of portal body by connection wall 6, realizes the firm support action to portal body.Two-way forced pile 7 has the auxiliary cushioning effect stablizing high face-upward slope, ensures the safety and stability of construction period further.
In technique scheme, described single load bearing stake 4 comprises the first anchor pile 41 and the second anchor pile 42, first anchor pile 41 is positioned at high side face-upward slope one end near portal body hole, second anchor pile 42 is positioned at high side face-upward slope one end away from portal body hole, and the second anchor pile is less than the vertical distance of the first anchor pile to portal body to the vertical distance of portal body.Second anchor pile comparatively the first anchor pile, closer in portal body, effectively reduces the excavation height of face-upward slope in work progress, rationally reduces engineering quantity.
In technique scheme, the first anchor pile 41 is connected with roadbed antislide pile by wall between stake.
In technique scheme, the height that the stake top of described single load bearing stake 4 exposes to the skeleton bank protection face 2 of portal body is not more than 1m, and between the stake top of single load bearing stake 4 and stake, the top of wall 5 is not all higher than portal main body.The height that described portal body 1 exposes to skeleton bank protection face 2 is not less than 1m.By rationally arranging the relative position in wall between single load bearing stake, stake, portal body and skeleton bank protection face, maximizedly realize of the present utility model protective function.
In technique scheme, institute's connection wall 6 and portal body 1 junction, between single load bearing stake 4 and stake wall 5 junction, between connection wall 6 and stake, the junction of wall 5 is provided with plug wall 9, ensure the installation stability of connection wall, the bonding strength of further consolidating pile slab-wall structure and portal body, the resistance to overturning of strengthening supporting structure.
In technique scheme, between described stake, wall 5 and connection wall 6 are barricade, can adopt other forms of body of wall according to demand in work progress.
In technique scheme, described first anchor pile 41 and the second anchor pile 42 are square hole digging pile, and stake cross section is 2m*2m ~ 3m*3m.Be difficult to once at hole under the full degree of depth puts the prerequisite of slope excavation, apply the first anchor pile and the second anchor pile in advance, under the supporting of anchor pile, carry out bottom excavation, apply wall between stake subsequently, as the comprehensive support system of entrance construction.The stake top of the first anchor pile and the second anchor pile and two-way forced pile all can arrange anchor cable and strengthen side slope protection.
In technique scheme, described portal body 1 is cap brim bias-cutting type hole-door, suits measures to local conditions to carry out the protective equipment that hole waterproof and water drainage system and rock-fall proof fall block.Face-upward slope toe place arranges size and is not less than 2m*1.5m platform, platform is laid toe ditch, Tunnel Identifier board, and platform also can be used as the interim storeroom of small-sized service kit, doubles as hole engineering structures repair and maintenance job platform simultaneously; The side slope protection structure at hole place is connected with adjacent cutting (embankment) preventive works by wall between stake.Tunnel face-upward slope skeleton bank protection pattern suitably can adjust according to adjacent roadbed bank protection pattern.
Should get rid of one by one before construction collapse, the potential safety hazard such as falling rocks.Entrance construction should avoid rainy season, first should carry out section (row) ditch and hole draining outside face-upward slope, intercept water process before construction.Tunnel slope is faced upward slope and smooth vertical and horizontal concrete arch can be adopted to intercept water skeleton bank protection face.Watertight shutter should be carried out with the rhone of formation rule in skeleton bank protection face.The appropriate position in skeleton bank protection face need be arranged marks time, so that the preventive works maintenance of top, hole.The face-upward slope at hole place adopts initiatively (passive) stone blocking net to carry out reinforcement protection, in case rockfall falls block to stone matter slope body.First anchor pile should arrange barricade between stake and be connected with roadbed antislide pile, the sluicing circular hole that dams setting has blossom type to arrange, between the first anchor pile and above-mentioned stake, the thick plug wall in barricade junction is reinforced.Should carry out side slope protection during entrance construction, suggestion entrance construction operation is: first apply hole drain dyke, then excavate face-upward slope, carry out necessary preventive works simultaneously.Apply two-way forced pile and single load bearing stake after completing, then apply between each single load bearing stake, barricade between stake between single load bearing stake portal body, between the first anchor pile and roadbed antislide pile.Build portal structure after completing the construction of pipe canopy guiding wall and steel tube shed, the most laggardly secretly wide openly to dig.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
The content be not described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1. a portal supporting and protection structure, comprise portal body (1), portal body (1) hole face-upward slope is provided with skeleton bank protection face (2), it is characterized in that high side face-upward slope (3) being positioned at portal body (1) side is provided with multiple single load bearing stake (4) along circuit longitudinal separation, the stressed stake of adjacent one-way (4) is connected by wall between stake (5), between stake, wall (5) is connected with portal body (1) by connection wall (6), the light and shade boundary mileage place of portal body (1) high side face-upward slope (3) is provided with two-way forced pile (7).
2. portal supporting and protection structure according to claim 1, it is characterized in that described single load bearing stake (4) comprises the first anchor pile (41) and the second anchor pile (42), first anchor pile (41) is positioned at one end near portal body (1) hole, high side face-upward slope (3), second anchor pile (42) is positioned at one end away from portal body (1) hole, high side face-upward slope (3), and the second anchor pile (42) is less than the vertical distance of the first anchor pile (41) to portal body (1) to the vertical distance of portal body (1).
3. portal supporting and protection structure according to claim 2, it is characterized in that the height that the stake top of single load bearing stake (4) exposes to the skeleton bank protection face (2) of portal body (1) is not more than 1m, between the stake top of single load bearing stake (4) and stake, the top of wall (5) is not all higher than portal main body.
4. portal supporting and protection structure according to claim 3, is characterized in that the height that portal body (1) exposes to skeleton bank protection face (2) is not less than 1m.
5. portal supporting and protection structure according to claim 4, it is characterized in that connection wall (6) and portal body (1) junction, between single load bearing stake (4) and stake wall (5) junction, between connection wall (6) and stake, the junction of wall (5) is provided with plug wall (9).
6. portal supporting and protection structure according to claim 5, it is characterized in that the first anchor pile (41) and the second anchor pile (42) are square hole digging pile, stake cross section is 2m*2m ~ 3m*3m.
7. portal supporting and protection structure according to claim 6, is characterized in that described portal body (1) is cap brim bias-cutting type hole-door.
8. portal supporting and protection structure according to claim 7, is characterized in that the first anchor pile (41) is connected with roadbed antislide pile (8) by wall between stake (5).
9. portal supporting and protection structure according to claim 8, is characterized in that wall between stake (5) and connection wall (6) are barricade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420740369.1U CN204283438U (en) | 2014-11-28 | 2014-11-28 | Portal supporting and protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420740369.1U CN204283438U (en) | 2014-11-28 | 2014-11-28 | Portal supporting and protection structure |
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| Publication Number | Publication Date |
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| CN204283438U true CN204283438U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420740369.1U Active CN204283438U (en) | 2014-11-28 | 2014-11-28 | Portal supporting and protection structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223989A (en) * | 2016-08-10 | 2016-12-14 | 兰州理工大学 | Unsymmetrial loading tunnel hole excavation safeguard structure and construction method |
| CN106988760A (en) * | 2017-04-12 | 2017-07-28 | 中铁二院工程集团有限责任公司 | Facility-sliding strata tunnel portal reinforcing construction and construction method |
| CN109958452A (en) * | 2019-03-14 | 2019-07-02 | 中铁十局集团西北工程有限公司 | A kind of tunnel exit slips the body control method that collapses |
| CN110439572A (en) * | 2019-08-22 | 2019-11-12 | 中铁隧道集团三处有限公司 | A kind of ductule zero brushes slope and appears construction technology |
-
2014
- 2014-11-28 CN CN201420740369.1U patent/CN204283438U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223989A (en) * | 2016-08-10 | 2016-12-14 | 兰州理工大学 | Unsymmetrial loading tunnel hole excavation safeguard structure and construction method |
| CN106223989B (en) * | 2016-08-10 | 2018-01-16 | 兰州理工大学 | Excavate safeguard structure and construction method in unsymmetrial loading tunnel hole |
| CN106988760A (en) * | 2017-04-12 | 2017-07-28 | 中铁二院工程集团有限责任公司 | Facility-sliding strata tunnel portal reinforcing construction and construction method |
| CN109958452A (en) * | 2019-03-14 | 2019-07-02 | 中铁十局集团西北工程有限公司 | A kind of tunnel exit slips the body control method that collapses |
| CN110439572A (en) * | 2019-08-22 | 2019-11-12 | 中铁隧道集团三处有限公司 | A kind of ductule zero brushes slope and appears construction technology |
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