CN114370234A - Bare rock riverbed steel pipe pile construction equipment and construction method - Google Patents
Bare rock riverbed steel pipe pile construction equipment and construction method Download PDFInfo
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- CN114370234A CN114370234A CN202111562080.6A CN202111562080A CN114370234A CN 114370234 A CN114370234 A CN 114370234A CN 202111562080 A CN202111562080 A CN 202111562080A CN 114370234 A CN114370234 A CN 114370234A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 242
- 239000010959 steel Substances 0.000 title claims abstract description 242
- 238000010276 construction Methods 0.000 title claims abstract description 86
- 239000011435 rock Substances 0.000 title claims abstract description 49
- 238000005553 drilling Methods 0.000 claims abstract description 41
- 239000002689 soil Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002893 slag Substances 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000004873 anchoring Methods 0.000 description 6
- 238000010009 beating Methods 0.000 description 5
- 238000009527 percussion Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
- E21B7/136—Underwater drilling from non-buoyant support
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
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- Civil Engineering (AREA)
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- Structural Engineering (AREA)
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- Earth Drilling (AREA)
Abstract
The invention provides a bare rock riverbed steel pipe pile construction device and a construction method, and relates to the technical field of steel pipe pile construction. According to the construction equipment for the steel pipe pile of the bare rock riverbed, the steel pipe drill bit plays a role of a steel casing in the prior art, and on the other hand, rock soil is compacted by the drill teeth on the steel pipe drill bit in the drilling process, waste residues in the hole site of the steel pipe pile are taken out when the drill rod pulls the steel pipe drill bit, so that the hole site of the steel pipe pile is convenient to clean, and the construction efficiency is high; because no steel casing is additionally arranged, after the steel pipe drill bit lifts slag, under the action of lateral pressure of water flow and a soil layer, the steel pipe drill bit can be desilted in a hole after being pulled out, a covering layer is formed, and vibration sinking construction of the steel pipe pile can be facilitated.
Description
Technical Field
The invention relates to the technical field of steel pipe pile construction, in particular to a bare rock riverbed steel pipe pile construction device and a construction method.
Background
The steel pipe piles are often needed as supporting foundations for the trestle or the platform in water, the conventional implementation method is that the vibratory hammers are used for inserting and beating to meet the requirement of bearing capacity, and the necessary condition of inserting and beating construction by the vibratory hammers is that the inserting and beating part needs to be provided with a covering layer with a certain thickness. For geological conditions such as shallow overburden, bare rock or cobble, boulder, can't insert through the vibratory hammer and beat and realize, need plant the stake through artificial overburden or pilot hole and realize, the concrete implementation process includes: and (3) conveying a heavy hammer or a percussion drill to a pile carrying position, firstly inserting and striking the steel casing, then forming a hole in the steel casing by adopting the heavy hammer or the percussion drill by taking the steel casing as a guide, and then pouring concrete to anchor the steel pipe pile. Need protect a hole location with the help of the steel, the waste residue that the hole in-process produced is difficult to the clearance, and the efficiency of construction is low, still need pour into the underwater concrete anchor behind the hole moreover, consumes the material many, and construction cost is high.
Disclosure of Invention
The invention aims to provide bare rock riverbed steel pipe pile construction equipment to solve the technical problems of low pile planting construction efficiency and high construction cost of steel pipe piles under the existing bare rock geological conditions.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a bare rock riverbed steel pipe pile construction equipment, includes the mechanism of circling round and steel pipe drill bit, the mechanism of circling round includes the drilling rod, the one end of drilling rod is connected with the steel pipe drill bit, the external shape of steel pipe drill bit is the same with the steel pipe pile shape, the steel pipe drill bit is equipped with the brill tooth in the one end of keeping away from the drilling rod.
According to the construction equipment for the steel pipe pile of the bare rock riverbed, the drill rod of the slewing mechanism drives the steel pipe drill bit to realize rotary excavation, the external shape of the steel pipe drill bit is the same as that of the steel pipe pile, the steel pipe drill bit plays the role of a steel casing in the prior art on one hand and isolates soil and water inside and outside the steel pipe drill bit, on the other hand, drilling teeth on the steel pipe drill bit compact rock soil in the drilling process, waste residues in the hole site of the steel pipe pile are taken out when the drill rod pulls the steel pipe drill bit, the rock soil in the hole site of the steel pipe pile is quickly cleaned, and the construction efficiency is high; the steel pipe drill bit is driven to rotate to replace the existing steel pile casing and the technical scheme that a heavy hammer or a percussion drill is arranged in the steel pile casing, and the steel pile casing is not additionally arranged, so that after drilling is finished and a rotary mechanism drives the steel pipe drill bit to lift slag, under the action of lateral pressure of water flow and a soil layer, the steel pipe drill bit is withdrawn from a hole and can be back-silted to form a new covering layer, and then subsequent vibration sinking construction of the steel pipe pile can be conveniently carried out; the steel pipe pile construction equipment for the bare rock riverbed steel pipe pile is adopted to carry out construction of the steel pipe pile, so that the processes of inserting a steel casing, pouring concrete in the steel casing and the like are omitted, the construction efficiency is greatly improved, and the construction cost is reduced; compared with the existing heavy hammer and impact drill, the hole forming efficiency can be improved by adopting the convolution mechanism.
Optionally, the steel pipe drill bit is provided with steel plates at intervals on the circumferential side wall far away from one end of the drill rod to form the drill teeth.
Optionally, the swiveling mechanism is a high-torque swiveling mechanism, the swiveling mechanism further includes a rack and a track, the drill rod is fixed on the rack, and the rack is slidably disposed on the track.
Optionally, the convolution mechanism further comprises a first flange and a second flange, the first flange is connected to one end, close to the steel pipe drill bit, of the drill rod, the second flange is arranged at one end, close to the drill rod, of the steel pipe drill bit, and the first flange is connected with the second flange.
Optionally, the slewing mechanism further comprises a bottom plate, the bottom plate is suitable for being arranged on a construction platform, the construction platform comprises Bailey pieces, cross beams and the steel pipe piles, the Bailey pieces are arranged between the steel pipe piles, and the Bailey pieces are supported by the cross beams;
or the construction platform adopts buoyancy tanks which are positioned on two sides of the hole site of the steel pipe pile.
Optionally, the swiveling mechanism further comprises a positioning plate, the positioning plate is slidably disposed on the rail, a positioning hole is formed in the positioning plate, and the drill rod is suitable for moving along the center line direction of the positioning hole;
the positioning plate comprises a plurality of sub-plates which are sequentially spliced, arc-shaped grooves are arranged on the sub-plates, and the arc-shaped grooves surround to form the positioning holes.
The invention also aims to provide a construction method of the bare rock riverbed steel pipe pile, which adopts the bare rock riverbed steel pipe pile construction equipment and comprises the following steps:
s1: a drill rod and a steel pipe drill bit of a rotary mechanism of the bare rock riverbed steel pipe pile construction equipment are aligned to the center of a hole position of the steel pipe pile, and the drill rod of the rotary mechanism extends to drive the steel pipe drill bit to drill;
s2: after drilling to a predetermined depth, the drill rod is retracted to lift the steel pipe drill bit;
s3: and lifting the steel pipe pile to the steel pipe pile hole site, and vibrating and sinking the steel pipe pile.
The invention relates to a construction method of a steel pipe pile of a bare rock riverbed, which is characterized in that a drill rod of a rotary mechanism is utilized to drive a steel pipe drill bit to rotatably excavate a pilot hole, then a steel pipe station head is pulled up, under the action of lateral pressure of water flow and a soil layer, the steel pipe drill bit is pulled out, and the hole is silted back to form a new covering layer, so that the subsequent vibration sinking construction of the steel pipe pile can be conveniently carried out.
Optionally, in S1, the step of aligning a drill rod and a steel pipe drill of a swivel mechanism of the bare rock riverbed steel pipe pile construction equipment with the center of a steel pipe pile hole site includes:
and the rotary mechanism moves to enable the hole position drilled by the drill rod to be consistent with the hole position of the steel pipe pile, one end of the drill rod is connected with the steel pipe drill bit, and the hole center position of the steel pipe drill bit is retested until the hole center position of the steel pipe drill bit corresponds to the hole position center of the steel pipe pile.
Optionally, the drilling to a predetermined depth comprises: and the rotary mechanism is connected with a drill rod with a shorter length, when the steel pipe drill bit drills a hole until the drill rod with the shorter length is contacted with the soil layer, the drill rod with the longer length is replaced, and the S1 is repeated.
Optionally, in S2, the predetermined depth is greater than a planting depth of the steel pipe pile.
Drawings
Fig. 1 is a schematic structural view of bare rock riverbed steel pipe pile construction equipment according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a positioning plate according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a bare rock riverbed steel pipe pile construction device according to a first embodiment of the present invention;
fig. 4 is a structural schematic diagram of a second embodiment of the bare rock riverbed steel pipe pile construction equipment according to the embodiment of the invention.
Description of reference numerals:
1. a swiveling mechanism; 11. a drill stem; 12. a frame; 13. a track; 14. a first flange; 15. a second flange; 16. a base plate; 17. positioning a plate; 171. positioning holes; 2. a steel pipe drill bit; 21. drilling teeth; 3. a construction platform; 31. bailey tablets; 32. a cross beam; 33. steel pipe piles; 34. a buoyancy tank; 4. the hole position of the steel pipe pile; 5. a trestle platform is erected; 6. river bed surface.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate orientation words, which are used for simplifying the description of positional relationships based on the drawings of the specification, and do not represent that elements, devices, and the like which are referred to must operate according to specific orientations and defined operations and methods, configurations in the specification, and such orientation terms do not constitute limitations of the present invention.
In addition, the terms "first" and "second" mentioned in the embodiments of the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Herein, a coordinate system XYZ is provided, wherein a forward direction of the X-axis represents a left direction, a reverse direction of the X-axis represents a right direction, a forward direction of the Y-axis represents a front direction, a reverse direction of the Y-axis represents a rear direction, a forward direction of the Z-axis represents an upper direction, and a reverse direction of the Z-axis represents a lower direction.
As shown in fig. 1, the bare rock riverbed steel pipe pile construction equipment according to the embodiment of the invention is used for constructing a steel pipe pile 33, and includes a swiveling mechanism 1 and a steel pipe drill bit 2, wherein the swiveling mechanism 1 includes a drill rod 11, an output end of the drill rod 11 is connected with the steel pipe drill bit 2, an external shape of the steel pipe drill bit 2 is the same as that of the steel pipe pile 33, and one end of the steel pipe drill bit 2, which is far away from the drill rod 11, is provided with drill teeth 21.
In this embodiment, the drill rod 11 and the steel pipe drill bit 2 are arranged along the direction shown by the Z-axis, and the steel pipe pile 33 is planted on the bare rock river bed along the direction shown by the Z-axis.
The drill rod 11 of the convolution mechanism 1 adopts a segmental design, the segmental connection of the long drill rod 11 is performed according to the factors of the length, the water depth, the height of the construction platform and the like of the steel pipe pile 33 to be planted, the drill rod 11 is positioned above the soil layer and can not be inserted into the soil layer, so that the drill rod 11 is broken by returning above the hole position 4 of the steel pipe pile in the drilling process, and the drill rod is not easy to pull out after drilling. The lower end of the drill rod 11 is detachably connected with a steel pipe drill bit 2, the steel pipe drill bit 2 is of a cylindrical structure, the diameter of the steel pipe drill bit 2 is the same as that of a steel pipe pile, the wall thickness of the steel pipe drill bit 2 is 12-16mm, the steel pipe drill bit 2 is located in a soil layer, generally, the length of the steel pipe drill bit 2 needs to be designed to be 2-3m larger than the soil penetration depth of the steel pipe pile, and after the steel pipe drill bit 2 is lifted, the steel pipe pile hole 4 can return to form a covering layer with a certain thickness. The diameter of the steel pipe pile hole can be within the range of 0.6-1.5m, the depth of the hole can reach 10m, and the subsequent steel pipe pile inserting, beating and anchoring performance is good.
The drill rod 11 of the convolution mechanism 1 drives the steel pipe drill bit 2 to drill a steel pipe pile hole underwater, then the drill rod 11 pulls the steel pipe drill bit 2, the steel pipe pile hole 4 returns to form a covering layer, then a steel pipe pile is inserted into the steel pipe pile hole 4, the steel pipe pile planting construction is realized by adopting a vibration hammer insertion and striking mode, compared with the construction process of inserting a steel casing first, punching a hole in the steel casing, and finally pouring and anchoring the steel pipe pile, the bare rock riverbed steel pipe pile construction equipment of the embodiment is adopted, the steel pipe drill bit is driven to rotate by the convolution mechanism to realize hole digging, the steel pipe drill bit also plays the role of the existing steel casing while drilling, soil and water inside and outside the steel pipe drill bit are isolated, the steel casing is not required to be additionally arranged, after the steel pipe drill bit is pulled, the construction equipment can conveniently return to the position without additionally pouring concrete, the steel pipe pile only can sink along the original drilling hole by utilizing the lithology of the stratum, the hole site rock stratum is compacted, the inserting beating and anchoring problems under the bare rock riverbed geology of the steel pipe pile are solved, the construction efficiency is as high as 2-4 m/h, the specific speed is determined according to the hardness of the rock stratum, the construction efficiency greatly exceeds the efficiency of punching holes of impact drills, and the influence on the surrounding geology is small. Compared with the impact of a heavy hammer, the precision of the hole position of the drilled hole is higher, and the deviation of the hole position is avoided.
In order to avoid that the slag soil in the steel pipe pile hole 4 can be quickly cleaned after the steel pipe drill bit 2 is pulled, the construction efficiency is further improved, the drill teeth 21 are arranged at one end, far away from the drill rod 11, of the steel pipe drill bit 2, in the drilling process of the steel pipe drill bit 2, the drill teeth 21 increase the cutting force on the soil layer on one hand, and on the other hand, the inter-teeth of the drill teeth 21 are gradually filled with the slag soil, the steel pipe drill bit 2 is pulled, the slag soil can be carried out, the hole cleaning efficiency is high, the construction cost is reduced, no additional construction process is added, and the construction efficiency is improved.
During construction, the steel pipe pile hole site is positioned by moving the drill rod positioning hole, the drilling hole site precision is high, the drilling depth is determined by measuring the length of the drill rod, the construction is simple and convenient, and the problems of inclined holes, hole site deviation and the like are also avoided.
Optionally, the steel pipe drilling head 2 is provided with steel plates at intervals on the circumferential side wall at the end far away from the drill rod 11 to form the drilling teeth 21.
In this embodiment, the steel plate is arranged obliquely to improve the cutting strength to the soil layer, the steel plate is of a specification of 20mm × 50mm × 100mm, the steel plate can be welded and fixed on the circumferential side wall of the steel pipe drill bit 2, and the welding quality of the drill teeth 21 needs to be detected to ensure the drilling efficiency of the steel pipe drill bit 2.
Optionally, the swiveling mechanism 1 is a high-torque swiveling mechanism, the swiveling mechanism 1 further includes a rack 12 and a rail 13, the drill rod 11 is fixed on the rack 12, and the rack 12 is slidably disposed on the rail 13.
In the present embodiment, the hole forming efficiency is higher by using the large torque swivel mechanism than the conventional hammer or impact drilling hole. The torque and the rotating speed of the large-torque rotary mechanism can be designed according to GQ-15 type rotary drill.
Illustratively, the rack 12 is H-shaped, the two rails 13 are arranged along the direction shown by the Y axis, the rack 12 is spanned on the rails 13, and the left side and the right side of the rack 12 are respectively connected with the corresponding rails 13 in a sliding manner.
The rack 12 can drive the drill rod 11 to slide along the track 13 in the front-back direction (the front-back direction is also the direction shown by the Y axis), when the installation of the steel pipe pile 33 at the current hole site is completed, the position of the drill rod 11 is moved through the track 13, the autonomous movement of the swivel mechanism 1 is realized, the steel pipe pile planting at different positions on the same track can be completed, and other hoisting equipment is not needed.
Optionally, the swiveling mechanism 1 further includes a first flange 14 and a second flange 15, the first flange 14 is connected to one end of the drill rod 11 close to the steel pipe drill bit 2, the second flange 15 is provided to one end of the steel pipe drill bit 2 close to the drill rod 11, and the first flange 14 is connected to the second flange 15.
In this embodiment, first flange 14 is installed to the lower extreme of drilling rod 11, second flange 15 is installed to the top of steel pipe drill bit 2, realizes dismantling the connection between steel pipe drill bit 2 and the drilling rod 11 through first flange 14 and second flange 15, can conveniently change steel pipe drill bit 2 according to the drilling depth.
Optionally, the slewing mechanism 1 further includes a bottom plate 16, the bottom plate 16 is adapted to be disposed on a construction platform 3, the construction platform 3 includes beret pieces 31, cross beams 32 and the steel pipe piles 33, the beret pieces 31 are disposed between the steel pipe piles 33, and the beret pieces 31 are supported by the cross beams 32;
or, the construction platform 3 adopts a buoyancy tank 34, and the buoyancy tank 34 is positioned on two sides of the steel pipe pile hole.
In this embodiment, the bare rock riverbed steel pipe pile construction equipment is arranged on the construction platform 3, and the construction platform 3 may be a temporary drilling platform arranged on the erected trestle platform 5, or buoyancy tanks are arranged on two sides of a hole site of the steel pipe pile, as shown in fig. 3-4.
In an exemplary, in a steel beam splicing platform of a Yunnan Showa high-speed Baishujiang super bridge, the bridge deck width of the platform is 30m, the bridge deck length is 225m, the water depth of a river channel in a set-up area is 5-7 m, the water level elevation is 577.8m, a lot of boulders and riprap stones exist at the bottom of a river bed, no covering layer exists, the geology of the river bed mainly adopts basalt, the structure is in a spot shape, an air hole almond-shaped structure, and a steel pipe pile cannot be driven to sink by a vibration hammer. A temporary drilling platform is built by adopting the steel pipe piles 33, the Bailey pieces 31 and the cross beams 32, and bare rock riverbed steel pipe pile construction equipment is installed on the temporary construction platform to realize the construction of the steel pipe piles.
Of course, in the steel pipe support engineering, the floating boxes 34 may be directly erected on both sides of the steel pipe pile to be planted, the swivel mechanism of the bare rock riverbed steel pipe pile construction equipment spans over the two floating boxes 34, and the bare rock riverbed steel pipe pile construction equipment is lifted by the floating boxes 34.
Optionally, the swiveling mechanism 1 further includes a positioning plate 17, the positioning plate 17 is slidably disposed on the rail 13, a positioning hole 171 is disposed on the positioning plate 17, and the drill rod 11 is adapted to move along a center line direction of the positioning hole 171;
the positioning plate 17 comprises a plurality of sub-plates which are sequentially spliced, arc-shaped grooves are formed in the sub-plates, and the arc-shaped grooves surround to form the positioning holes 171.
In this embodiment, the positioning plate 17 is slidably disposed on the track 13, when the drill rod 11 lowers the steel pipe drill bit 2, the positioning plate 17 slides away in a direction away from the drill rod 11, and when the steel pipe drill bit 2 is lowered into water, the positioning plate 17 slides to enable the drill rod 11 to pass through the positioning hole 171 in the positioning plate 17, so that the positioning hole 171 limits the range of motion of the drill rod 11, the drill rod 11 is prevented from shaking during drilling, and the drilling accuracy is improved.
In order to enable the drill rod 11 to pass through the positioning hole 171 during the process of moving the positioning plate 17 back and forth, as shown in fig. 2, the positioning plate 17 is formed by splicing two separate sub-plates, the two sub-plates are respectively connected with the two rails 13 in a sliding manner, the opposite sides of the two sub-plates are provided with arc-shaped grooves, and the two arc-shaped grooves are butted and enclosed into the circular positioning hole 171 to limit the drill rod 11 in the positioning hole 171.
In order to improve the strength of the positioning plate 17, a reinforcing rib may be provided at the bottom of the positioning plate 17.
Another embodiment of the present invention provides a method for constructing a bare rock riverbed steel pipe pile, which uses the bare rock riverbed steel pipe pile construction equipment, and includes the steps of:
s1: a drill rod 11 and a steel pipe drill bit 2 of a rotary mechanism 1 of the bare rock riverbed steel pipe pile construction equipment are aligned to the center of a hole position of the steel pipe pile, and the drill rod 11 of the rotary mechanism 1 extends to drive the steel pipe drill bit 2 to drill.
In this step, the process that the drill rod 11 and the steel pipe drill bit 2 of the swivel mechanism 1 of the bare rock riverbed steel pipe pile construction equipment align to the center of the hole site of the steel pipe pile comprises the following steps: the rotary mechanism 1 moves to enable the hole position drilled by the drill rod 11 to be consistent with the hole position of the steel pipe pile, one end of the drill rod 11 is connected with the steel pipe drill bit 2, and the hole center position of the steel pipe drill bit 2 is retested until the hole center position of the steel pipe drill bit 2 corresponds to the hole position center of the steel pipe pile; then, the steel pipe drilling head 2 is lowered to the river bed surface 6, the positioning plate 17 is moved so that the drill rod 11 passes through the positioning hole 171, and drilling work is started.
S2: after drilling to a predetermined depth, the drill rod 11 is retracted to lift the pipe drill bit 2.
In this step, a shorter drill rod 11 is connected first, when the swiveling mechanism 1 is adopted to drive the steel pipe drill bit 2 to drill to a certain depth, generally, the upper end surface of the steel pipe drill bit 2 is in contact with the soil layer, or the lower end surface of the shorter drill rod 11 is just in contact with the soil layer, at this time, drilling construction can no longer be performed, the steel pipe drill bit 2 needs to be lifted, and the longer drill rod 11 needs to be replaced, in this embodiment, a section can be selected to be lengthened on the previous drill rod 11 to increase the length of the drill rod 11, then the steel pipe drill bit 2 is lowered to drill, and the process is repeated in sequence until the drilling depth is 2m greater than the designed anchoring depth of the steel pipe pile.
The design of the drilling depth is larger, so that the steel pipe drill 2 can return to the inside of the hole after being lifted, and the pile can be conveniently planted. If the drilling depth is equal to or less than the designed anchoring depth of the steel pipe pile, the drilling depth is reduced after the steel pipe drill bit 2 is pulled out, and the pile insertion depth is reduced, which is inconvenient for construction.
S3: and hoisting the steel pipe pile 33 to the steel pipe pile hole site, and vibrating and sinking the steel pipe pile 33.
In this step, a crane is used to lift the steel pipe pile 33, and after the steel pipe pile 33 is placed in the steel pipe pile hole, the steel pipe pile 33 is hammered by a vibration hammer, so that the steel pipe pile 33 sinks to the designed anchoring depth.
And S4, moving the drill rod 11 of the swivel mechanism along the length direction of the track 13 to make the drill rod 11 align with the hole position of the next steel pipe pile, and performing construction of the next steel pipe pile.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. The utility model provides a bare rock riverbed steel-pipe pile construction equipment, characterized in that, includes mechanism (1) and the steel pipe drill bit (2) of circling round, the mechanism (1) of circling round includes drilling rod (11), the output of drilling rod (11) is connected with steel pipe drill bit (2), the external shape of steel pipe drill bit (2) is the same with steel-pipe pile (33) shape, steel pipe drill bit (2) are being kept away from the one end of drilling rod (11) is equipped with bores tooth (21).
2. The bare rock riverbed steel pipe pile construction equipment according to claim 1, wherein the steel pipe drill bit (2) is provided with steel plates at intervals on a circumferential side wall of one end far away from the drill rod (11) to constitute the drill teeth (21).
3. The bare rock riverbed steel pipe pile construction equipment according to claim 1, wherein the slewing mechanism (1) is a high-torque slewing mechanism, the slewing mechanism (1) further comprises a rack (12) and a track (13), the drill rod (11) is fixed on the rack (12), and the rack (12) is slidably arranged on the track (13).
4. The bare rock riverbed steel pipe pile construction equipment according to claim 1, wherein the swivel mechanism (1) further comprises a first flange (14) and a second flange (15), the first flange (14) is connected to one end of the drill pipe (11) close to the steel pipe drill bit (2), the second flange (15) is arranged at one end of the steel pipe drill bit (2) close to the drill pipe (11), and the first flange (14) is connected with the second flange (15).
5. The bare rock riverbed steel pipe pile construction equipment according to claim 1, wherein the swivel mechanism (1) further comprises a bottom plate (16), the bottom plate (16) is suitable for being arranged on a construction platform (3), the construction platform (3) comprises Bailey pieces (31), cross beams (32) and the steel pipe piles (33), the Bailey pieces (31) are arranged between the steel pipe piles (33), and the Bailey pieces (31) are supported by the cross beams (32);
or the construction platform (3) adopts a buoyancy tank (34), and the buoyancy tank (34) is suitable for being positioned on two sides of the steel pipe pile hole site (4).
6. The bare rock riverbed steel pipe pile construction equipment according to claim 3, wherein the swivel mechanism (1) further comprises a positioning plate (17), the positioning plate (17) is slidably arranged on the track (13), a positioning hole (171) is formed in the positioning plate (17), and the drill rod (11) is suitable for moving along the central line direction of the positioning hole (171);
the positioning plate (17) comprises a plurality of sub-plates which are sequentially spliced, arc-shaped grooves are formed in the sub-plates, and the arc-shaped grooves are enclosed to form the positioning holes (171).
7. A construction method of a bare rock riverbed steel pipe pile, which is characterized in that the bare rock riverbed steel pipe pile construction equipment of any one of claims 1 to 6 is adopted, and comprises the following steps:
s1: the drill rod (11) and the steel pipe drill bit (2) of the rotary mechanism (1) of the bare rock riverbed steel pipe pile construction equipment are aligned to the center of the steel pipe pile hole site (4), and the drill rod (11) of the rotary mechanism (1) extends to drive the steel pipe drill bit (2) to drill;
s2: after drilling to a predetermined depth, the drill rod (11) is retracted to lift the steel pipe drill bit (2);
s3: and lifting the steel pipe pile (33) to the steel pipe pile hole site (4), and vibrating and sinking the steel pipe pile (33).
8. The method for constructing a bare rock riverbed steel pipe pile according to claim 7, wherein in the step S1, the process of aligning the drill rod (11) and the steel pipe drill bit (2) of the swivel mechanism (1) of the bare rock riverbed steel pipe pile construction equipment with the center of the steel pipe pile hole comprises:
the rotary mechanism (1) moves to enable the hole position drilled by the drill rod (11) to be consistent with the hole position (4) of the steel pipe pile, one end of the drill rod (11) is connected with the steel pipe drill bit (2), and the hole center position of the steel pipe drill bit (2) is retested until the hole center position of the steel pipe drill bit (2) corresponds to the center of the hole position (4) of the steel pipe pile.
9. The bare rock riverbed steel pipe pile construction method according to claim 7, wherein the drilling to a predetermined depth comprises: the rotary mechanism (1) is connected with a drill rod (11) with a shorter length, when the steel pipe drill bit (2) drills a hole until the drill rod (11) with the shorter length is in contact with the soil layer, the drill rod (11) with the longer length is replaced, and the S1 is repeated.
10. The bare rock riverbed steel pipe pile construction method according to claim 7, wherein in the step S2, the predetermined depth is larger than a planting depth of the steel pipe pile (33).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562080.6A CN114370234A (en) | 2021-12-17 | 2021-12-17 | Bare rock riverbed steel pipe pile construction equipment and construction method |
| PCT/CN2022/095278 WO2023109014A1 (en) | 2021-12-17 | 2022-05-26 | Construction apparatus and construction method for steel pipe pile in bare rock riverbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562080.6A CN114370234A (en) | 2021-12-17 | 2021-12-17 | Bare rock riverbed steel pipe pile construction equipment and construction method |
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| CN114370234A true CN114370234A (en) | 2022-04-19 |
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| CN202111562080.6A Pending CN114370234A (en) | 2021-12-17 | 2021-12-17 | Bare rock riverbed steel pipe pile construction equipment and construction method |
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| Country | Link |
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| CN (1) | CN114370234A (en) |
| WO (1) | WO2023109014A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023109014A1 (en) * | 2021-12-17 | 2023-06-22 | 中铁九桥工程有限公司 | Construction apparatus and construction method for steel pipe pile in bare rock riverbed |
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| Publication number | Publication date |
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| WO2023109014A1 (en) | 2023-06-22 |
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