CN115710948A - Construction method for driving upright post of anti-collision guardrail into pile - Google Patents
Construction method for driving upright post of anti-collision guardrail into pile Download PDFInfo
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- CN115710948A CN115710948A CN202211438616.8A CN202211438616A CN115710948A CN 115710948 A CN115710948 A CN 115710948A CN 202211438616 A CN202211438616 A CN 202211438616A CN 115710948 A CN115710948 A CN 115710948A
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000004888 barrier function Effects 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention discloses a construction method for driving an anti-collision guardrail upright post, which comprises the following steps: 1. positioning the anti-collision guardrail upright post; 2. a guide limiting mechanism is arranged on the drill rod; 3. mounting a drill rod; 4. reaming the drill rod; 5. driving an anti-collision guardrail upright post; 6. repeating the third step and the fifth step for multiple times until the bottom of the crash barrier upright post reaches the design depth; 7. and (5) mounting the corrugated beam. The method has simple steps and reasonable design, and the drill rod penetrates through the bottom of the anti-collision guardrail column to perform reaming so as to drive the anti-collision guardrail column into the designed depth, avoid the extraction of the anti-collision guardrail column and solve the problem that the anti-collision guardrail column cannot be driven into the ground due to obstacles such as super-grain diameter and the like.
Description
Technical Field
The invention belongs to the technical field of anti-collision guardrail stand columns, and particularly relates to a construction method for driving an anti-collision guardrail stand column into a pile.
Background
At present, an anti-collision guardrail is used as a highway anti-collision facility, and the deformation of a soil foundation, an upright post and a cross beam is utilized to absorb collision energy, and an out-of-control vehicle is forced to change the direction and return to the normal running direction, so that the vehicle is prevented from rushing out of the road, the vehicle and passengers are protected, and the loss caused by accidents is reduced. The installation quality of the crash barrier stand column directly influences the application effect of the crash barrier in construction, but partial ultra-grain-size filler is inevitably applied in the construction process of the roadbed and the central separation zone, so that the stand column cannot be smoothly driven into a soil body in the construction process of the crash barrier stand column. When the situation occurs, the traditional solution is that hoisting equipment is used for forcibly pulling out the anti-collision guardrail column through a steel wire rope, and then the column is inserted again at the in-situ backfill hole; or adopting a manual in-situ excavation method for construction; or a drilling machine with the hole diameter slightly smaller than that of the stand column is used for drilling to the embedding depth of the stand column, and then a complete stand column is driven into the drilled hole to complete the construction of the stand column.
However, the traditional method has the following defects:
firstly, can cause certain damage to anticollision barrier stand itself when extracting the anticollision barrier stand, light person has reduced the performance of material, and the material is changed to the serious needs of damage, has increased material cost. For example, the column bending deformation is caused by improper pulling-out angle; the galvanized and plastic-coated surfaces of the upright posts are damaged in the pulling-out process, so that the steel base plates of the upright posts are exposed outside, and the service lives of the upright posts are shortened;
secondly, after the construction of the stand column is completed, the stand column needs to be pulled out, drilled and re-driven, so that the time consumption is long, the project progress is influenced, and certain economic cost is increased.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and the invention provides the construction method for driving the anti-collision guardrail column into the soil, which has the advantages of simple steps and reasonable design.
In order to solve the technical problems, the invention adopts the technical scheme that: a construction method for driving an anti-collision guardrail upright post is characterized by comprising the following steps:
step one, positioning an anti-collision guardrail upright post:
step 101, setting upright post mounting points on a highway foundation;
102, driving the anti-collision guardrail column into the highway foundation by using a pile driver at the column mounting point until the depth of the anti-collision guardrail column into the highway foundation is 30-35 cm; wherein, the axis of the crash barrier upright post is superposed with the upright post mounting point;
step two, installing a guide limiting mechanism on the drill rod:
a plurality of guide limiting mechanisms are arranged on the drill rod; the guide limiting mechanisms are distributed along the length direction of the drill rod;
step three, drill rod installation:
step 301, penetrating a drill rod into an anti-collision guardrail upright post;
step 302, in the process that the drill rod penetrates into the anti-collision guardrail upright post, adjusting a guide wheel in the guide limiting mechanism to be attached to the inner side wall of the anti-collision guardrail upright post until the bottom of the drill rod is flush with the bottom of the anti-collision guardrail upright post; wherein the drill rod and the crash barrier upright post are coaxially and vertically arranged;
step four, reaming the drill rod:
step 401, driving a drill rod to reciprocate by a breaking hammer of an excavator, breaking or extruding soil around the bottom of an anti-collision guardrail upright column, and operating the excavator to stop the drill rod to move until the downward moving depth of the bottom of the drill rod meets a set depth value to form drill rod reaming;
step 402, pulling out the drill rod from the anti-collision guardrail upright post and the highway foundation extending into the anti-collision guardrail upright post;
step five, driving the anti-collision guardrail column into the rail to follow:
adopting a pile driver to drive the anti-collision guardrail upright post into the drill rod reaming hole until the bottom of the anti-collision guardrail upright post is level with the bottom of the drill rod reaming hole;
sixthly, repeating the third step to the fifth step for multiple times until the bottom of the anti-collision guardrail column reaches the designed depth;
step seven, installation of the corrugated beam: and (4) installing the traveling beam on the upright post of the anti-collision guardrail.
The construction method for driving the anti-collision guardrail stand column is characterized in that: the specific manufacturing process of each guide limiting mechanism in the second step is as follows:
step 201, installing a plurality of threaded sleeves on the annular base body along the circumferential direction of the annular base body;
step 202, installing a limiting part at the inner end of any one of the threaded sleeves, and installing a guide part at the outer end of any one of the threaded sleeves; the limiting part can be close to or far away from the outer side wall of the drill rod, and the guide part can be close to or far away from the inner side wall of the crash barrier upright post; the threaded sleeve, the limiting component and the guide component form a guide limiting component.
The construction method for driving the anti-collision guardrail upright post is characterized in that: the specific process of installing a limiting component at the inner end of any one threaded sleeve in step 202 is as follows: an inner adjusting rod penetrates through the inner end of the threaded sleeve, an inner adjusting nut is sleeved on the inner adjusting rod, and a clamping plate is installed at the end part of the inner adjusting rod; the inner adjusting nut is attached to the inner end of the threaded sleeve, and the inner side face of the clamping plate is provided with an anti-slip pad matched with the outer side wall of the drill rod.
The construction method for driving the anti-collision guardrail upright post is characterized in that: the specific process of installing a guide member at the outer end of any one of the threaded sleeves in step 202 is as follows: the outer end of the threaded sleeve is provided with an outer adjusting rod, an outer adjusting nut is sleeved on the outer adjusting rod, a wheel seat is arranged at the end part of the outer adjusting rod, and a guide wheel matched with the inner side wall of the anti-collision guardrail upright post is arranged on the wheel seat.
The construction method for driving the anti-collision guardrail stand column is characterized in that: the method for installing a plurality of guide limiting mechanisms on the drill rod is the same, wherein the specific process of installing any one guide limiting mechanism on the drill rod is as follows:
the annular base body is sleeved on the drill rod, the inner adjusting rod is driven to shrink along the threaded sleeve by rotating the inner adjusting nut, so that the extension length of the inner adjusting rod is adjusted, the clamping plate is driven to be close to or far away from the outer side wall of the drill rod until the anti-slip pad on the clamping plate is tightly attached to the outer side wall of the drill rod, and the drill rod is clamped.
The construction method for driving the anti-collision guardrail stand column is characterized in that: in step 302, in the process that the drill rod penetrates into the anti-collision guardrail column, the guide wheel in the guide limiting mechanism is adjusted to be attached to the inner side wall of the anti-collision guardrail column, and the concrete process is as follows:
the outer adjusting nut is rotated to drive the outer adjusting rod to contract along the threaded sleeve, so that the extending length of the outer adjusting rod is adjusted;
thereby drive the guide pulley on the wheel seat and can be close to or keep away from anticollision barrier stand inside wall through adjusting the extension length of outer regulating stem to when making the drill rod penetrate the anticollision barrier stand, guide pulley lateral wall laminating anticollision barrier stand inside wall.
Compared with the prior art, the invention has the following advantages:
1. the invention has simple structure, reasonable design, simple and convenient construction and lower input cost.
2. According to the invention, the drill rod penetrates into the anti-collision guardrail column, the drill rod is driven to reciprocate by the breaking hammer of the excavator, and the soil body around the bottom of the anti-collision guardrail column is broken or extruded, so that the drill rod is reamed, the anti-collision guardrail column is conveniently driven into the reaming section by the pile driver, and the anti-collision guardrail column is driven into the roadbed stratum with the super-grain diameter.
3. According to the invention, the guide limiting mechanism is arranged on the drill rod, and is used for ensuring that the drill rod and the anti-collision guardrail upright post are coaxially and vertically arranged when the drill rod penetrates into the anti-collision guardrail upright post; the guide is also carried out when the breaking hammer of the excavator drives the drill rod to reciprocate, and the accuracy is improved.
4. The method for driving the anti-collision guardrail column into the construction is simple in steps, convenient to implement and easy and convenient to operate, and ensures accurate driving construction of the anti-collision guardrail column.
5. The construction method for driving the anti-collision guardrail stand column into the pile is simple and convenient to operate and good in using effect, and firstly, the anti-collision guardrail stand column is positioned; secondly, a guide limiting mechanism is arranged on the drill rod; then the drill rod is installed; and finally, reaming the drill rod and driving the anti-collision guardrail stand column into the hole until the bottom of the anti-collision guardrail stand column reaches the designed depth, and completing the construction of driving the anti-collision guardrail stand column into the hole.
In conclusion, the method has simple steps and reasonable design, and the drill rod penetrates through the bottom of the anti-collision guardrail column to perform reaming, so that the anti-collision guardrail column is driven into the designed depth, the anti-collision guardrail column is prevented from being pulled out, and the problem that the anti-collision guardrail column cannot be driven into the ground due to obstacles such as super-grain diameter and the like is solved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a top view of FIG. 1 with the demolition hammer removed
Fig. 3 is a schematic structural view of the guiding and limiting mechanism of the present invention.
FIG. 4 is a block flow diagram of the present invention.
Description of reference numerals:
1-upright column; 2-a drill rod;
3-an annular substrate; 4, guiding and limiting parts;
4-1-threaded sleeve; 4-2-external adjusting nut; 4-3-external adjusting rod;
4-wheel seat; 4-5-guide wheel; 4-6-inner adjusting nut;
4-7-inner adjusting rod; 4-8-splint; 4-9-anti-slip mat;
5-highway foundation; 6-breaking hammer.
Detailed Description
As shown in fig. 1 to 4, the method for driving the crash barrier post comprises the following steps:
step one, positioning an anti-collision guardrail upright column:
101, setting a stand column mounting point on a highway foundation 5;
102, driving the anti-collision guardrail column 1 into the expressway foundation 5 at the column mounting point by using a pile driver until the depth of the anti-collision guardrail column bottom into the expressway foundation 5 is 30-35 cm; wherein, the axis of the crash barrier upright is superposed with the upright mounting point;
step two, installing a guide limiting mechanism on the drill rod:
a plurality of guide limiting mechanisms are arranged on the drill rod 2; wherein, a plurality of guide limit mechanisms are distributed along the length direction of the drill rod 2;
step three, drill rod installation:
step 301, penetrating a drill rod 2 into an anti-collision guardrail upright post 1;
step 302, in the process that the drill rod 2 penetrates into the anti-collision guardrail upright post 1, adjusting a guide wheel 4-5 in the guide limiting mechanism to be attached to the inner side wall of the anti-collision guardrail upright post 1 until the bottom of the drill rod 2 is flush with the bottom of the anti-collision guardrail upright post 1; wherein the drill rod 2 and the crash barrier upright post 1 are coaxially and vertically arranged;
step four, reaming the drill rod:
step 401, driving the drill rod 2 to reciprocate by a breaking hammer 6 of the excavator, breaking or extruding soil around the bottom of the crash barrier upright post 1 until the downward moving depth of the bottom of the drill rod 2 meets a set depth value, and operating the excavator to stop the drill rod 2 to form drill rod reaming;
step 402, pulling out the drill rod 2 from the anti-collision guardrail upright post 1 and the highway foundation extending into the anti-collision guardrail upright post;
step five, driving the anti-collision guardrail upright post into the ground for follow-up:
driving the anti-collision guardrail upright post 1 into the drill rod reaming hole by using a pile driver until the bottom of the anti-collision guardrail upright post 1 is flush with the bottom of the drill rod reaming hole;
step six, repeating the step three to the step five for multiple times until the bottom of the crash barrier upright post 1 reaches the design depth;
step seven, installation of the corrugated beam: and (4) installing the traveling beam on the upright post 1 of the anti-collision guardrail.
In this embodiment, the specific process of manufacturing each guide limiting mechanism in the second step is as follows:
step 201, installing a plurality of threaded sleeves 4-1 on an annular base body 3 and along the circumferential direction of the annular base body 3;
step 202, installing a limiting component at the inner end of any one of the threaded sleeves 4-1, and installing a guide component at the outer end of any one of the threaded sleeves 4-1; the limiting part can be close to or far from the outer side wall of the drill rod 2, and the guide part can be close to or far from the inner side wall of the crash barrier upright post 1; wherein, the threaded sleeve 4-1, the limiting component and the guiding component form a guiding limiting component 4.
In this embodiment, the specific process of installing the limiting component at the inner end of any one of the threaded sleeves 4-1 in step 202 is as follows: an inner adjusting rod 4-7 penetrates through the inner end of the threaded sleeve 4-1, an inner adjusting nut 4-6 is sleeved on the inner adjusting rod 4-7, and a clamping plate 4-8 is arranged at the end part of the inner adjusting rod 4-7; the inner adjusting nut 4-6 is attached to the inner end of the threaded sleeve 4-1, and the inner side face of the clamping plate 4-8 is provided with an anti-slip pad 4-9 matched with the outer side wall of the drill rod 2.
In this embodiment, the specific process of installing the guiding component at the outer end of any one of the threaded sleeves 4-1 in step 202 is as follows: an outer adjusting rod 4-3 is installed at the outer end of the threaded sleeve 4-1, an outer adjusting nut 4-2 is sleeved on the outer adjusting rod 4-3, a wheel seat 4-4 is arranged at the end of the outer adjusting rod 4-3, and a guide wheel 4-5 matched with the inner side wall of the crash barrier upright post 1 is arranged on the wheel seat 4-4.
In the embodiment, the method for installing a plurality of guide limiting mechanisms on the drill rod 2 is the same, wherein the specific process for installing any one guide limiting mechanism on the drill rod 2 is as follows:
the annular base body 3 is sleeved on the drill rod 2, the inner adjusting nut 4-6 is rotated to drive the inner adjusting rod 4-7 to contract along the threaded sleeve 4-1, so that the extension length of the inner adjusting rod 4-7 is adjusted, the clamping plate 4-8 is driven to be close to or far away from the outer side wall of the drill rod 2 until the anti-skid pad 4-9 on the clamping plate 4-8 is tightly attached to the outer side wall of the drill rod 2, and the drill rod 2 is clamped.
In this embodiment, in the step 302, in the process that the drill rod 2 penetrates into the anti-collision guardrail column 1, the guide wheel 4-5 in the guide limiting mechanism is adjusted to be attached to the inner side wall of the anti-collision guardrail column 1, and the specific process is as follows:
the external adjusting nut 4-2 is rotated to drive the external adjusting rod 4-3 to contract along the threaded sleeve 4-1, so that the extending length of the external adjusting rod 4-3 is adjusted;
the extension length of the outer adjusting rod 4-3 is adjusted to drive the guide wheel 4-5 on the wheel seat 4-4 to be close to or far away from the inner side wall of the crash barrier upright post 1, so that when the drill rod 2 penetrates into the crash barrier upright post 1, the outer side wall of the guide wheel 4-5 is attached to the inner side wall of the crash barrier upright post 1.
In the embodiment, the value of the depth value is set to be 20-50 cm;
in this embodiment, the length of the drill rod 2 is greater than that of the crash barrier post 1.
In this embodiment, the threaded sleeve 4-1 is hollow and provided with a threaded portion.
In the embodiment, the inner adjusting rod 4-7 and the outer adjusting rod 4-3 are threaded rods, one end of each of the inner adjusting rod 4-7 and the outer adjusting rod 4-3 extends into the threaded sleeve 4-1 and is in threaded connection with the threaded sleeve 4-1, and a gap is reserved between the inner adjusting rod 4-7 and one end of the outer adjusting rod 4-3, so that the inner adjusting rod 4-7 and the outer adjusting rod 4-3 can be conveniently retracted.
In this embodiment, the inner adjusting nut 4-6 is sleeved on the inner adjusting rod 4-7 and attached to the inner end of the threaded sleeve 4-1. The outer adjusting nut 4-2 is sleeved on the outer adjusting rod 4-3 and attached to the outer end of the threaded sleeve 4-1.
In conclusion, the method provided by the invention has the advantages that the steps are simple, the design is reasonable, and the drill rod penetrates through the bottom of the anti-collision guardrail column to perform reaming, so that the anti-collision guardrail column is driven into the designed depth, the anti-collision guardrail column is prevented from being pulled out, and the problem that the anti-collision guardrail column cannot be driven into the ground due to obstacles such as super-grain size and the like is solved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A construction method for driving an anti-collision guardrail upright post is characterized by comprising the following steps:
step one, positioning an anti-collision guardrail upright post:
step 101, setting a stand column mounting point on a highway foundation (5);
102, driving the anti-collision guardrail column (1) into the highway foundation (5) at the column mounting point by adopting a pile driver until the depth of the anti-collision guardrail column bottom into the highway foundation (5) is 30-35 cm; wherein, the axis of the crash barrier upright is superposed with the upright mounting point;
step two, installing a guide limiting mechanism on the drill rod:
a plurality of guide limiting mechanisms are arranged on the drill rod (2); the guide limiting mechanisms are distributed along the length direction of the drill rod (2);
step three, drill rod installation:
step 301, a drill rod (2) penetrates into an anti-collision guardrail upright post (1);
step 302, in the process that the drill rod (2) penetrates into the anti-collision guardrail upright post (1), adjusting a guide wheel (4-5) in the guide limiting mechanism to be attached to the inner side wall of the anti-collision guardrail upright post (1) until the bottom of the drill rod (2) is flush with the bottom of the anti-collision guardrail upright post (1); wherein the drill rod (2) and the crash barrier upright post (1) are coaxially and vertically arranged;
step four, reaming the drill rod:
step 401, driving a drill rod (2) to reciprocate by a breaking hammer (6) of an excavator, breaking or extruding soil around the bottom of an anti-collision guardrail upright post (1), and operating the excavator to stop the drill rod (2) to move until the downward moving depth of the bottom of the drill rod (2) meets a set depth value to form drill rod reaming;
step 402, pulling out the drill rod (2) from the anti-collision guardrail column (1) and the highway foundation extending into the anti-collision guardrail column;
step five, driving the anti-collision guardrail column into the rail to follow:
driving the anti-collision guardrail column (1) into the drill rod reaming hole by using a pile driver until the bottom of the anti-collision guardrail column (1) is flush with the bottom of the drill rod reaming hole;
sixthly, repeating the third step and the fifth step for multiple times until the bottom of the crash barrier upright post (1) reaches the design depth;
step seven, installation of the corrugated beam: and (3) installing the traveling beam on the anti-collision guardrail upright post (1).
2. The method for driving the crash barrier post according to claim 1, wherein: the specific manufacturing process of each guide limiting mechanism in the second step is as follows:
step 201, installing a plurality of threaded sleeves (4-1) on an annular base body (3) along the circumferential direction of the annular base body (3);
202, installing a limiting component at the inner end of any one of the threaded sleeves (4-1), and installing a guide component at the outer end of any one of the threaded sleeves (4-1); the limiting part can be close to or far away from the outer side wall of the drill rod (2), and the guide part can be close to or far away from the inner side wall of the crash barrier upright post (1); wherein, the threaded sleeve (4-1), the limiting component and the guiding component form a guiding limiting component (4).
3. The method for driving the anti-collision guardrail column into the construction according to claim 2, wherein the method comprises the following steps: in step 202, the specific process of installing the limiting part at the inner end of any one of the threaded sleeves (4-1) is as follows: an inner adjusting rod (4-7) penetrates through the inner end of the threaded sleeve (4-1), an inner adjusting nut (4-6) is sleeved on the inner adjusting rod (4-7), and a clamping plate (4-8) is installed at the end part of the inner adjusting rod (4-7); the inner adjusting nut (4-6) is attached to the inner end of the threaded sleeve (4-1), and the inner side face of the clamping plate (4-8) is provided with an anti-slip pad (4-9) matched with the outer side wall of the drill rod (2).
4. A method of installing a post in a crash barrier according to claim 3, wherein: the specific process of installing the guide part at the outer end of any one of the threaded sleeves (4-1) in the step 202 is as follows: an outer adjusting rod (4-3) is installed at the outer end of the threaded sleeve (4-1), an outer adjusting nut (4-2) is sleeved on the outer adjusting rod (4-3), a wheel seat (4-4) is arranged at the end part of the outer adjusting rod (4-3), and then a guide wheel (4-5) matched with the inner side wall of the anti-collision guardrail upright post (1) is arranged on the wheel seat (4-4).
5. The method for driving the crash barrier post according to claim 4, wherein: the method for installing a plurality of guide limiting mechanisms on the drill rod (2) is the same, wherein the specific process of installing any one guide limiting mechanism on the drill rod (2) is as follows:
the annular base body (3) is sleeved on the drill rod (2), the inner adjusting nut (4-6) is rotated to drive the inner adjusting rod (4-7) to contract along the threaded sleeve (4-1), so that the extension length of the inner adjusting rod (4-7) is adjusted, the clamping plate (4-8) is driven to be close to or far away from the outer side wall of the drill rod (2) until the anti-skid pad (4-9) on the clamping plate (4-8) is tightly attached to the outer side wall of the drill rod (2), and the drill rod (2) is clamped.
6. The method for driving the crash barrier post according to claim 4, wherein: in the step 302, in the process that the drill rod (2) penetrates into the anti-collision guardrail column (1), adjusting a guide wheel (4-5) in the guide limiting mechanism to be attached to the inner side wall of the anti-collision guardrail column (1), and the concrete process is as follows:
the outer adjusting nut (4-2) is rotated to drive the outer adjusting rod (4-3) to contract along the threaded sleeve (4-1), so that the extension length of the outer adjusting rod (4-3) is adjusted;
the extension length of the outer adjusting rod (4-3) is adjusted to drive the guide wheel (4-5) on the wheel seat (4-4) to be close to or far away from the inner side wall of the anti-collision guardrail upright post (1), so that when the drill rod (2) penetrates into the anti-collision guardrail upright post (1), the outer side wall of the guide wheel (4-5) is attached to the inner side wall of the anti-collision guardrail upright post (1).
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| CN202211438616.8A CN115710948B (en) | 2022-11-17 | 2022-11-17 | Anti-collision guardrail upright post driving construction method |
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| CN202211438616.8A CN115710948B (en) | 2022-11-17 | 2022-11-17 | Anti-collision guardrail upright post driving construction method |
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