CN111119208A - Hole anchor pile protection structure and construction method thereof - Google Patents
Hole anchor pile protection structure and construction method thereof Download PDFInfo
- Publication number
- CN111119208A CN111119208A CN202010057948.6A CN202010057948A CN111119208A CN 111119208 A CN111119208 A CN 111119208A CN 202010057948 A CN202010057948 A CN 202010057948A CN 111119208 A CN111119208 A CN 111119208A
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- Prior art keywords
- anchor
- tunnel
- pile
- hole
- slide
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000004873 anchoring Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 210000002435 tendon Anatomy 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 238000005422 blasting Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract 2
- 238000011105 stabilization Methods 0.000 abstract 2
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
Abstract
The invention discloses a hole-anchor pile protection structure and a construction method thereof, wherein the hole-anchor pile protection structure comprises an anti-slide pile, an anchor rope and a tunnel, the anti-slide pile is driven into a slope stabilization area from a sliding surface of a slope, the tunnel is arranged in the slope stabilization area, a prestress applying and adjusting device is fixed in the tunnel, one end of the anchor rope is anchored and connected with the anti-slide pile, and the other end of the anchor rope is anchored and connected with the prestress applying and adjusting device; the construction method comprises the following steps: the method comprises the following steps: driving anti-slide piles to a slope stable area from the sliding surface of the slope, excavating a tunnel in the slope stable area, and arranging a prestress applying and adjusting device in the tunnel; step two: and drilling a hole between the slide-resistant pile and the tunnel, installing an anchor rope in the drilled hole, connecting one end of the anchor rope with the slide-resistant pile in an anchoring manner, and connecting the other end of the anchor rope with the prestress applying and adjusting device in an anchoring manner.
Description
Technical Field
The invention relates to the technical field of cutting slope protection, in particular to a tunnel anchor pile protection structure and a construction method thereof.
Background
The problems of high and steep slope protection are frequently encountered in the projects such as railway and highway construction in mountain areas, and if the protection measures are not well done, the problems of slope cracking and sliding and even engineering landslide are easily caused. The adoption of slope slide-resistant piles (anchor piles) for pre-reinforcement is a common protection measure, but the gliding force borne by the anchor piles is limited, and the combination of the slide-resistant piles and anchor cables (anchor cable piles) can be adopted for more firm reinforcement.
As shown in fig. 1, an anti-slide pile 4 is generally arranged beside a cutting excavation range 2, the anti-slide pile 4 is driven into a slope stable area 6 below a sliding surface 1 from the sliding surface 1 of a slope 3, an anchor cable 5 driven into the slope stable area 6 below the sliding surface 1 from the sliding surface 1 of the slope 3 is constructed by using the anti-slide pile 4, the anchor cable 5 is connected with the anti-slide pile 4, and a certain prestress is applied to the anchor cable 5. Although the anchor cable pile structure can strengthen the stability of the side slope to a certain extent, the anchor cable 5 is an underground structure, the construction quality and the reliability of the anchor cable pile structure are often difficult to guarantee, and once the construction is completed, the prestress of the anchor cable 5 cannot be checked and adjusted, so that the side slope is difficult to be further strengthened by adjusting the prestress according to the actual side slope monitoring condition.
Disclosure of Invention
The invention aims to: aiming at the problems in the prior art, the invention provides a protection structure for a hole anchor pile and a construction method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a hole anchor pile protection architecture, includes friction pile, anchor rope and tunnel, the friction pile is hit into side slope stable area from the slip surface of side slope, the tunnel sets up side slope stable area, just the tunnel internal fixation has prestressing force to apply and adjusting device, the one end of anchor rope with the friction pile anchor connects, the other end of anchor rope with prestressing force is applied and adjusting device anchor connects. And the slip surface and the slope stability area are determined according to the slope stability coefficient.
According to the hole anchor pile protection structure, the tunnel is arranged, and the prestress applying and adjusting device is arranged in the tunnel, so that the anchor cable is conveniently constructed and applied with prestress, the construction quality and the prestress of the connecting end of the anchor cable and the side slope stable area are conveniently checked, the quality of the anchor cable is easily controlled, the quality of the anchor cable is conveniently checked in real time after construction is completed, and prestress adjustment and further reinforcement are carried out. On the other hand, the tunnel can also be used as a drainage tunnel to drain water permeating into the mountain body from the side slope in time, thereby being more beneficial to the stability of the mountain side slope.
As a preferable scheme of the invention, the width of the tunnel is 2m-4 m.
As a preferable scheme of the invention, a lining and a concrete bottom are arranged in the tunnel.
As a preferable scheme of the present invention, the anchor cable includes a steel flower tube and a prestressed reinforcement bundle located in the steel flower tube, and the steel flower tube is filled with cement slurry.
As a preferable aspect of the present invention, the prestress applying and adjusting device includes a prestress tension device and an anchor device.
As a preferable scheme of the invention, a prestress tension device and an anchoring device are arranged on the slide-resistant pile.
As the preferable scheme of the invention, the tunnel is internally provided with a drainage ditch, so that accumulated water can be drained conveniently.
The invention also discloses a construction method of the tunnel anchor pile protection structure, which comprises the following steps:
the method comprises the following steps: driving anti-slide piles to a slope stable area from the sliding surface of the slope, excavating a tunnel in the slope stable area, and arranging a prestress applying and adjusting device in the tunnel;
step two: and drilling a hole between the slide-resistant pile and the tunnel, installing an anchor rope in the drilled hole, connecting one end of the anchor rope with the slide-resistant pile in an anchoring manner, and connecting the other end of the anchor rope with the prestress applying and adjusting device in an anchoring manner.
The construction method provided by the invention is simple to operate, has reasonable procedures, and can realize accurate control of the connection quality of the two ends of the anchor cable, thereby improving the construction quality of the anchor cable and being beneficial to the stability of the side slope.
As a preferred scheme of the invention, in the first step, the tunnel is excavated by weak blasting, so that the stability of the side slope is not influenced as much as possible.
In a preferred embodiment of the present invention, in the second step, a perforated steel pipe is drilled into the drilled hole, a tendon is inserted into the perforated steel pipe, the tendon is tensioned, and after the tendon is tensioned, an anchor sealing process is performed, and cement slurry is injected into the perforated steel pipe.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the hole anchor pile protection structure, the tunnel is arranged, and the prestress applying and adjusting device is arranged in the tunnel, so that the anchor cable is conveniently constructed and applied with prestress, the construction quality and the prestress of the connecting end of the anchor cable and the side slope stable area are conveniently checked, the quality of the anchor cable is easily controlled, the quality of the anchor cable is conveniently checked in real time after construction is completed, and prestress adjustment and further reinforcement are carried out. On the other hand, the tunnel can also be used as a drainage tunnel to drain water permeating into the mountain body from the side slope in time, thereby being more beneficial to the stability of the mountain side slope.
2. The construction method provided by the invention is simple to operate, has reasonable procedures, and can realize accurate control of the connection quality of the two ends of the anchor cable, thereby improving the construction quality of the anchor cable and being beneficial to the stability of the side slope.
Drawings
Fig. 1 is a schematic diagram of a conventional anchor pile protection arrangement.
Fig. 2 is a schematic structural view of a hole anchor pile guard structure according to the present invention.
Icon: 1-slip plane, 2-cutting excavation range, 3-slope, 4-slide-resistant pile, 5-anchor cable, 6-slope stable area, 7-tunnel and 8-prestress applying and adjusting device.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 2, the hole anchor pile protection structure comprises the slide-resistant piles 4, the anchor cables 5 and the tunnel 7. The anti-slide pile 4 is arranged beside the cutting excavation range 2, the anti-slide pile 4 is driven into a slope stable area 6 from a sliding surface 1 of a side slope 3, and the anti-slide pile 4 is provided with a prestress tensioning device and an anchoring device which are connected with the anchor cable 5.
One end of the anchor cable 5 is connected with the anti-slide pile 4 in an anchoring mode, the other end of the anchor cable 5 is connected with the prestress applying and adjusting device 8 in an anchoring mode, the anchor cable 5 comprises a steel flower tube and a prestress steel bar bundle located in the steel flower tube, and cement slurry is filled in the steel flower tube.
Example 2
As shown in fig. 2, a construction method of a hole anchor pile protection structure includes the following steps:
the method comprises the following steps: the method comprises the steps that anti-slide piles 4 are arranged from a sliding surface 1 of a side slope 3 to a side slope stable area 6, a tunnel 7 with the width of about 3m is excavated in the side slope stable area 6 through weak blasting, a prestress applying and adjusting device 8 is arranged in the tunnel 7, and the prestress applying and adjusting device 8 comprises a prestress tensioning device and an anchoring device;
step two: drilling between the anti-slide pile 4 and the tunnel 7, driving the steel flower pipe in the drilling, to put into the tendon in the steel flower pipe, with the one end of tendon with the anti-slide pile 4 anchor is connected, with the other end of tendon with prestressing force is applyed and adjusting device 8 anchor is connected, stretch-draw the tendon after tendon stretch-draw is accomplished, seal the anchor and handle, and to pour into grout into in the steel flower pipe, form anchor rope 5.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a hole anchor pile protection architecture, its characterized in that includes friction pile (4), anchor rope (5) and tunnel (7), side slope stable area (6) are squeezed into from slip surface (1) of side slope (3) in friction pile (4), tunnel (7) set up side slope stable area (6), just tunnel (7) internal fixation has prestressing force to apply and adjusting device (8), the one end of anchor rope (5) with friction pile (4) anchor is connected, the other end of anchor rope (5) with prestressing force is applied and adjusting device (8) anchor is connected.
2. A hole-anchor pile guard construction according to claim 1, characterized in that the width of the tunnel (7) is 2-4 m.
3. A hole-anchor pile protection construction according to claim 1, characterized in that a lining and concrete bedding are provided in the tunnel (7).
4. A hole-anchor pile protection construction according to claim 1, characterized in that the anchor cable (5) comprises a steel flower tube filled with cement slurry and prestressed reinforcement bundles inside the steel flower tube.
5. A hole anchor pile guard structure as claimed in claim 1, wherein said prestress applying and adjusting means (8) comprises prestress tension means and anchoring means.
6. A hole anchor pile protection configuration according to claim 5, characterized in that a pre-stressed tension device and an anchoring device are provided on the slide-resistant pile (4).
7. A hole-anchor pile protection construction according to any one of claims 1-6, characterized in that a drainage ditch is arranged in the tunnel (7).
8. A construction method of a tunnel anchor pile protection structure is characterized by comprising the following steps:
the method comprises the following steps: driving anti-slide piles (4) from the sliding surface (1) of the side slope (3) to the side slope stable area (6), excavating tunnels (7) in the side slope stable area (6), and arranging prestress applying and adjusting devices (8) in the tunnels (7);
step two: drilling a hole between the anti-slide pile (4) and the tunnel (7), installing an anchor rope (5) in the drilled hole, connecting one end of the anchor rope (5) with the anti-slide pile (4) in an anchoring manner, and connecting the other end of the anchor rope (5) with the prestress applying and adjusting device (8) in an anchoring manner.
9. A construction method of a hole-anchor pile protection structure as claimed in claim 8, wherein in the first step, the tunnel (7) is excavated by weak blasting.
10. A method as claimed in claim 9, wherein in the second step, a perforated steel pipe is drilled into the drilled hole, a tendon is inserted into the perforated steel pipe, the tendon is tensioned, and after tensioning of the tendon is completed, an anchoring process is performed, and cement slurry is injected into the perforated steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010057948.6A CN111119208A (en) | 2020-01-17 | 2020-01-17 | Hole anchor pile protection structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010057948.6A CN111119208A (en) | 2020-01-17 | 2020-01-17 | Hole anchor pile protection structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111119208A true CN111119208A (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010057948.6A Pending CN111119208A (en) | 2020-01-17 | 2020-01-17 | Hole anchor pile protection structure and construction method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN111119208A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140800A (en) * | 2011-01-24 | 2011-08-03 | 中铁西北科学研究院有限公司 | Quick, safe and environment-friendly method for constructing non-excavated anti-slide pile |
| CN202969394U (en) * | 2012-10-22 | 2013-06-05 | 中国水电建设集团路桥工程有限公司 | Device for reinforcing protection structure |
| CN203939034U (en) * | 2014-05-13 | 2014-11-12 | 中国水电顾问集团华东勘测设计研究院有限公司 | The slope treatment structure that a kind of antislide pile is combined with anchor cable, anchor caverns |
| CN204803901U (en) * | 2015-06-26 | 2015-11-25 | 中国电建集团华东勘测设计研究院有限公司 | Side slope arrangement structure that friction pile and prestressed anchorage hitch of buckling closed |
| CN106223989A (en) * | 2016-08-10 | 2016-12-14 | 兰州理工大学 | Unsymmetrial loading tunnel hole excavation safeguard structure and construction method |
| CN108532615A (en) * | 2018-04-23 | 2018-09-14 | 武汉工程大学 | Cable adjustable power anchor draws friction pile and its construction method |
| CN109555137A (en) * | 2018-11-13 | 2019-04-02 | 中南大学 | A kind of high gradient slope joint retaining structure and its construction method |
| CN110565657A (en) * | 2019-08-27 | 2019-12-13 | 江苏省地质矿产局第三地质大队 | Supporting structure for reinforcing landslide and construction method |
| CN211735449U (en) * | 2020-01-17 | 2020-10-23 | 中铁二院工程集团有限责任公司 | Hole anchor pile protection structure |
-
2020
- 2020-01-17 CN CN202010057948.6A patent/CN111119208A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140800A (en) * | 2011-01-24 | 2011-08-03 | 中铁西北科学研究院有限公司 | Quick, safe and environment-friendly method for constructing non-excavated anti-slide pile |
| CN202969394U (en) * | 2012-10-22 | 2013-06-05 | 中国水电建设集团路桥工程有限公司 | Device for reinforcing protection structure |
| CN203939034U (en) * | 2014-05-13 | 2014-11-12 | 中国水电顾问集团华东勘测设计研究院有限公司 | The slope treatment structure that a kind of antislide pile is combined with anchor cable, anchor caverns |
| CN204803901U (en) * | 2015-06-26 | 2015-11-25 | 中国电建集团华东勘测设计研究院有限公司 | Side slope arrangement structure that friction pile and prestressed anchorage hitch of buckling closed |
| CN106223989A (en) * | 2016-08-10 | 2016-12-14 | 兰州理工大学 | Unsymmetrial loading tunnel hole excavation safeguard structure and construction method |
| CN108532615A (en) * | 2018-04-23 | 2018-09-14 | 武汉工程大学 | Cable adjustable power anchor draws friction pile and its construction method |
| CN109555137A (en) * | 2018-11-13 | 2019-04-02 | 中南大学 | A kind of high gradient slope joint retaining structure and its construction method |
| CN110565657A (en) * | 2019-08-27 | 2019-12-13 | 江苏省地质矿产局第三地质大队 | Supporting structure for reinforcing landslide and construction method |
| CN211735449U (en) * | 2020-01-17 | 2020-10-23 | 中铁二院工程集团有限责任公司 | Hole anchor pile protection structure |
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